Improving F-15C Air Combat Training With Distributed Mission Training Advanced Simulation
Air Combat Command is investing in Distributed Mission Training (DMT) to provide realistic mission training to the Combat Air Forces (CAF) using advances in simulation technology. DMT will network advanced simulators (and some real-world systems) to provide combat aircrews with team training in a synthetic wartime environment. F-15C units will be first in the CAF to incorporate DMT; they are confronted with developing training programs utilizing this new tool without previous experience of how to exploit the benefits of simulation for air combat training. This paper seeks to assist syllabus developers by providing a summary of lessons learned from years of air combat simulation study, and applying those lessons to DMT. A comprehensive analysis of air combat simulation training studies provides insight on how to improve F-15C air combat training using DMT. Studies not only demonstrate simulators can provide effective training, but also identify unique benefits and limitations of simulator training, and offer several training program considerations to achieve the most effective results. DMT benefits not available in flight training include unique instruction options, the capability to repeatedly practice desired tasks or missions, and the opportunity to train in complex combat scenarios. Identified limitations include sources of negative training and the lack of physiological stresses or inputs that may be desired in training. For training programs, simulator studies suggest which tasks should be emphasized in DMT, how metrics can identify training needs, who is expected to gain the most benefit from DMT, and how to intermix DMT and flight scheduling to optimize training.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
A Simulation Based Methodology to Examine the B-1B's AN/ALQ-161 Maintenance Process
This thesis looks at the maintenance procedures associated with the defensive electronic counter measure (ECM) system on the B-1B, designated the AN/ALQ-161. Computer simulation of the current line-replaceable-unit (LRU) maintenance network for Ellsworth AFB and Dyess AFB is modeled. In addition, two hypothetical repair networks are proposed and analyzed. This research considers the applicability of this type of computer simulation, using ARENA software to study the AN/ALQ-161 repair system. The contribution of this research is a discrete simulation methodology specific to the AN/ALQ-161 LRU repair line. Two response variables of interest were addressed, work-in-process and machine utilization. A total of 20 different repair scenarios were analyzed for the three different LRU networks simulated. A best-case scenario is selected from each model and the results are compared to one another.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
The Comanche Helicopter
On 23 February 2004, the Acting Secretary of the Army Les Aspin and the Chief of Staff of the Army General Peter Schoomaker, announced the cancellation of the Comanche program. In the minds of these two gentlemen, the evidence presented in a 2003 comprehensive review of aviation-a changing environment, an aging fleet, and budgetary concerns-demanded immediate and drastic action. This paper investigates those claims through the eyes of the Comanche program managers during the final seven years of the program. After numerous interviews, it is apparent that the claims made during the cancellation briefing do hold merit. However, they only portray a snapshot in time. To understand why the program suffered its eventual fate, one needs to consider the program in its entirety.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Modeling Urban Warfare
The United States military is performing operations in urban environments with increasing frequency. Current Department of Defense doctrine is poorly suited to train and equip today's warriors with the tools and experience necessary to fight and win in modern sprawling cities. In order to close the gap, the U.S. Joint Forces Command's Joint Experimentation Directorate led an effort to run a massively distributed simulation of a synthetic urban environment utilizing human-in-the-loop operators called URBAN RESOLVE. The synthetic environment simulated the city of Jakarta with over 1,000,000 buildings and structures and over 120,000 civilian entities. A Red force retreated into the city while a Blue force attempted to determine the enemy's Order of Battle. The exercise generated over 3.7 terabytes of data in seven distinct trials.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Deep Battle Exploitation in Rapid Decisive Operations
This research offers new doctrine guiding use of airborne forces. The primary method was synthesizing past and current airborne doctrine and practice with recent advances in technology and capabilities to come up with a fresh look at solving airborne problems. The traditional problems encountered by airborne forces are fratricide, assembly delays, aircraft vulnerability to AAA, SAMs, and enemy aircraft, resupply, and vulnerabilities after insertion. These include foot speed maneuver limits, little protection against heavy forces, and potential of being isolated. These problems can be overcome by following a new doctrine of Deep Battle Exploitation building on existing technology improvements like GPS, satellite communications, NVGs, improved intelligence, and data links such as Blue Force Tracker and Link 16. This doctrine integrates overarching Rapid Decisive Operations concepts applied at the operational level and is stated as using multiple (15+) simultaneous airborne force insertions forward of the main battle lines with no requirement of link up operations. These company to battalion size forces will operate like SOF, but focus overtly on JFC objectives in either a supporting or supported role. Implementing this doctrine requires no new aircraft or hardware, but needs significant changes in Army and Air Force doctrine and training in tactics, techniques, and proceduresthat can be done today! Key words: Rapid Decisive Operations (RDO), non-linear, simultaneous, non-contiguous, swarm, Strategic Brigade Airdrop (SBA), Airland Battle, Joint Targeting, airborne, airdrop, air assault, simultaneity and depth.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Security Force Assistance Logistics
When are a nation's security forces deemed self-reliant? Security force assistance (SFA) is one process of building or rebuilding a nation's security forces. If the ultimate goal of SFA is producing a self-reliant force capable of responding to a nation's security requirements, then accurately assessing that force's ability to sustain itself should be of great interest to assisting and assisted nations alike. A self-reliant security force with an autonomous sustainment system gives the assisted nation a measure of independence and self-determination. In turn, the assisting nation benefits from the regional (perhaps even global) stability generated in addition to relief from having to provide trainers, materiel, and funding. This monograph proposes that fully integrating efforts to build logistics capability, capacity, and infrastructure into the overall SFA effort will produce enduring, self-reliant foreign security forces able to sustain themselves across the spectrum of the logistics functions. However, achieving self-reliance not only requires the integration of efforts. It also means providing honest assessment and appraisal of the foreign security force (FSF) by the assisting nation's advisors and senior leaders. Not fully integrating logistics development into our SFA programs or not providing candid assessments of SFA logistics efforts in Iraq, Afghanistan, and future venues risks the formation of unsustainable security force structures that will ultimately collapse after assistance ends.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
A Shot to the Space Brain
The US military is becoming reliant on space systems. These systems provide us the essential information and communication means required to dominate the future battle-space. This reliance has extended beyond military programs, however, and now includes a reliance on commercial and civil systems. While this trend towards non-military systems is inevitable, does reliance on civil and commercial space systems create a unique center of gravity for the US military? This paper evaluates this issue by first identifying the need to use non-military systems and then developing a theory for analysis of realistic vulnerabilities of space systems. The focal point for this analysis is the command and control segment for a particular program. Four specific civil and commercial systems (Landsat, SPOT, Radarsat, and INTELSAT) are evaluated in light of this analysis.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Military Space Control
Military space control describes the capability to secure a military asymmetric advantage in space. Space control protects space assets to guarantee access to space services, and at the same time, prevents an enemy from benefiting from resources in space. The tremendous growth in the integration of space systems into today's warfighting machinery is driving a remarkable transition in the military space domain. The growing need for information dominance is the impetus for an increasing military dependence on space services. This reliance on space systems is compelling military decision makers to make key strategic choices about the future of space control.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
High Power Microwaves
The conclusion of this study is that high power microwave technology is ready for the transition to active weapons in the U.S. military. It reviews various applications of high power microwave weapons in strategic and operational missions for the Air Force, considers the implications of the integration of microwave technology into operational weapons, and examines numerous constraints and challenges associated with the transition of new technologies and systems into the Air Force inventory. This study concludes that high power microwave weapons systems offer the prospect of significant offensive and defensive capabilities for all of the military services. The principal recommendations include the suggestion that the Department of Defense and the Air Force establish a High Power Microwave Systems Program Office for the purpose of developing these weapons and integrating them into the combatant commands. This systems program office should be a joint program office that involves the participa-tion of the Army, Navy, and Marine Corps as well as other agencies. Only then will the U.S. military be able to maximize the development of microwave applications, minimize costs, and facilitate the transition of this unique technology to the military services and other government agencies. Not only should defense contractors be encouraged to develop the technical capabilities that would permit them to participate in microwave weapons programs, but this study also concludes that all U.S. military systems should be hardened to protect them against the effects of microwaves.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Sentinel Chameleon
Sentinel Chameleon: A Concept of Operations for Employment of Unmanned Aerial Systems for Persistent Information Operations in 2030 The year is 2031. Coalition Forces are conducting Foreign Internal Defense and stabilization operations at the request of a terrorist-plagued nation in North-East Africa. There have been credible threats of a Weapons of Mass Destruction (WMD) attack using conventional delivery methods; most likely in the form of a dirty bomb. There is no indication that the host country has an organic WMD capability. A Sentinel Chameleon (SENCHEON) constellation has been operating over a designated area for 37 hours where the coast and the borders of a neighboring country, known to deal in WMD materials, can be closely monitored. The Master Planning Tasking Command and Control Mission Lead (MPTC2ML) is a Marine Corps Joint Forces Commander established by Africa Command (AFRICOM) and has set up headquarters in the troubled country. The MPTC2 center is located in the Coalition Air Operations Center. The Combined Forces Maritime Component Commander (CFMCC), comprised of US Navy combatants from Commander FIFTH Fleet (C5F), has been conducting Maritime Interdiction Operations (MIO) from the straight of Babel Mandeb to the Northern Kenyan coast. Although piracy interdiction has been successful, the Navy's Visit Board Search and Seizure (VBSS) of suspect vessels has not yielded indications of Chemical Biological Radiological or Nuclear (CBRN) materials. The Combined Forces Land Component Commander (CFLCC) is providing support to boarder control authorities, but for the most part this responsibility has fallen to the host nation. WMD proliferation is growing and the threat to the FID operation is imminent. So, what kind of Unmanned Aerial System is SENCHEON? How is it different from any other? What can it do to help eliminate the threat?This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Optimal Adoption of Green Roofs
New growth within established communities puts undue pressure on existing infrastructure which in turn, drives tax rate increases for all residents to cover. However, there are sustainable methods that municipalities can turn to that diminishes the local impacts of new growth on the community. Based on the absorptive nature of green roofs, the delayed release of stored rainfall volume diminishes the instances of combined sewer outflows as well as reduces the need for increased infrastructure to convey and treat stormwater discharge. A municipality can introduce planned percentages of green roof coverage which will diminish infrastructure improvement costs over time and increase the population's sustainable footprint. By employing the curve number method for determining runoff volumes from specific rain events and attaching cost-per-unit increase values to the interacting variables, the runoff-cost model produces cost curves in relation to the percentages of green roof coverage. From this runoff-cost model, (based on a specific area), a calculated 40% green roof coverage can be fully reimbursed to the builders through tax abatements, eliminating the perceived cost premium of green over conventional roofs.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Analysis of Online-Delaunay Navigation for Time-Sensitive Targeting
Given the drawbacks of leaving time-sensitive targeting (TST) strictly to humans, there is value to the investigation of alternative approaches to TST operations that employ autonomous systems. This paper accomplishes five things. First, it proposes a short-hop abbreviated routing paradigm (SHARP) -- based on Delaunay triangulations (DT), ad-hoc communication, and autonomous control -- for recognizing and engaging TSTs that, in theory, will improve upon persistence, the volume of influence, autonomy, range, and situational awareness. Second, it analyzes the minimum timeframe need by a strike (weapons enabled) aircraft to navigate to the location of a TST under SHARP. Third, it shows the distribution of the transmission radius required to communicate between an arbitrary sender and receiver. Fourth, it analyzes the extent to which connectivity, among nodes with constant communication range, decreases as the number of nodes decreases. Fifth, it shows the how SHARP reduces the amount of energy required to communicate between two nodes. Mathematica 5.0.1.0 is used to generate data for all metrics. JMP 5.0.1.2 is used to analyze the statistical nature of Mathematica's output.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
An Examination of Latency and Degradation Issues in Unmanned Combat Aerial Vehicle Environments
There are two basic ways to control an Unmanned Combat Aerial Vehicle (UCAV) as it searches for targets: allow the UCAV to act autonomously or employ man-in-the-loop control. There are also two target sets of interest: fixed or mobile targets. This research focuses on UCAV-based targeting of mobile targets using man-in-the-loop control. In particular, the interest is in how levels of satellite signal latency or signal degradation affect the ability to accurately track, target, and attack mobile targets. This research establishes a weapon effectiveness model assessing targeting inaccuracies as a function of signal latency and/or signal degradation. The research involved three phases. The first phase in the research was to identify the levels of signal latency associated with satellite communications.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
The Elimination of Corrosion
United States Air Force aircraft currently average 30 years old. As this aircraft fleet continues to age, the cost of corrosion maintenance, both in terms of dollars spent and lost operational readiness, increases correspondingly. Corrosion maintenance cost the Air Force over $1.5 billion in 2004, and trends show that number quickly rising, as it cost only $800 million in 1998. These rising costs must be reversed before Air Force operations suffer serious detrimental effects. Nanotechnology offers one possible solution for creating new revolutionary anticorrosion coatings capable of adapting to environmental damage and conditions.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Robotics
New technology may be able to help answer the cries to reduce casualties resulting from friendly fire and collateral damage, as well as assist the military in performing urban operations. Unmanned vehicles, whether air, land or sea, are one means to get our airmen, soldiers, marines, and sailors out of harm's way and are most likely a key driver to an upcoming revolution in military affairs (RMA) for all services. The major objective of the paper is to bring attention to Tactical Mobile Robots (TMR) and hopefully encourage follow-on studies and to cultivate an enthusiasm to employ them correctly to help get our troops out of harms way and win battles. This study focuses primarily on the use of TMRs in the special operations environment. The paper discusses the current and immediate TMR capabilities; key logistics concerns regarding maintenance, supply, and transportation; and two possible scenarios, one in an unconstrained battlefield and the other in an urban environment. The data collected was primarily via conducting interviews and witnessing experiments and they highlight a few barriers, which must be addressed if unmanned platforms are to keep pace with congressional orders.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Air Force Development Test and Evaluation Under Acquisition Reform
Acquisition Reform changed government involvement in system acquisition with transition to best commercial practices. Shortened acquisition timelines, reduced budgets and increased contractor test responsibilities intensifed several issues. These issues are test planning and execution capabilities, joint contractor and government test efficiency, and both government and industry test experience levels. Today's DTE methods are insufficient to successfully overcome increased system complexity, decreased test budgets, and reduced manpower challenges of the future. To meet these challenges, this project presents six test recommendations which enhance DTE contributions to the acquisition process. The six recommendations are: 1. Develop a single commercial industry standard governing military aviation testing. 2. Emphasize greater simulation configuration control and technological simulation advances, with software test and avionics integration simulation the highest priorities. 3. Refine the Integrated Test Team Concept to combine contractor, development, and operational test requirements in addition to innovative test program teaming. 4. Streamline development and operational test data requirements and allow contractor and development test personnel to supplement operational test teams. 5. Automate test planning and execution functions to reduce manpower investments. 6. Modify the Federal Aviation Administration Designated Engineering Representative concept to increase contractor test autonomy.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Beyond Awareness
Ever since the United States beat the Soviet Union in the space race, the United States has lived with an illusion of space superiority. In military terms, this means that the United States has enjoyed both freedom of action and freedom from action in space. The Chinese shoot-down of the FY-1C satellite on January 11, 2007 forced the United States to look over its shoulder, and when it did, the United States realized that not only was the race still on, but the dragon and others were rapidly gaining ground. One year later the United States responded by shooting down the US-193 satellite in what may be the opening volley of a new contest to control space. The 2007 Chinese anti-satellite (ASAT) test clearly shows that other nations are aware of the US dependence on space and some of them may be unwilling to let US space superiority go unchallenged. In order to maintain freedom of action in space, the United States must move beyond the present paradigm of space situational awareness and towards one of comprehensive space situational knowledge.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Retaining Army Engineer Officers
Policy and doctrine require the U.S. Army to provide certain capabilities during the conduct of stability operations. The Department of Defense now considers stability operations as critical to success as offensive and defensive operations. Operations that require technical engineer capabilities, specifically infrastructure reconstruction operations, require a portion of the engineer officer corps to possess a technical engineering education. Trends in officer accessions and retention indicate a shortfall in technical engineering education among the engineer officer corps, casting doubt in the ability of the Engineer Regiment to meet anticipated future requirements. Senior engineer leaders identified these conditions and initiated a campaign to increase technical competence within the regiment. This monograph contributes to this effort by identifying factors that affect the retention of engineer officers who possess engineering degrees. The results of a survey of engineer officers at Fort Leavenworth reveal these officers possess lower job satisfaction than officers who possess non-engineering degrees and officers across the Army. These officers are more likely to believe their experiences in the Army did not match their pre-commissioning expectations contributing to perceived "psychological contract violations." The monograph suggests leaders conduct a series of studies over time to assess the effects of initiatives to increase technical competence within the Engineer Regiment.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Tactical Information Gathering in the High Technology Command and Control Environment
This study investigates the US Army division commander's leadership responsibilities in directing the information gathering effort of his high technology command and control systems. The study first summarizes some major criteria for effective command and control. The study briefly describes today's command and control environment, recognizing the effects of the latest technology, revised doctrine, and the timeless human element of war. It then examines the potential effects of high technology information gathering on effective command and control. The study identifies five leadership requirements for the division commander in directing the information gathering effort. Those requirements are to: emphasize "command" over "control", organize the systems for the information gathering effort, focus the information gathering effort, discipline the information gathering systems, and train for the effort. The study concludes that the division commander's personal and organizational leadership is necessary to gain the great advantages of the US Army division's modern information gathering systems while minimizing the inherent adverse effects of those systems on effective command and control.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Analysis of GPS Satellite Allocation for the United States Nuclear Detonation Detection System (USNDS)
The United States Nuclear Detonation Detection System (USNDS) relies on sensors onboard NAVSTAR Global Positioning System (GPS) satellites to detect atmospheric nuclear detonations. Though there are currently over 24 operational GPS satellites, USNDS ground based antennas are only capable of actively monitoring 24 satellites at a time. Personnel at the Air Force Technical Applications Center (AFTAC) desire a well-defined methodology for selecting which 24 satellites should be monitored to maximize global coverage capability. This research introduces a means to numerically quantify each satellite's individual contribution to the coverage provided by the constellation as a whole. A heuristic generates a set of possible combinations of satellites that yield high global coverage.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
The Need for a Dedicated Space Vehicle for Defensive Counterspace Operations
This paper investigates the defensive counterspace function as defined in Air Force Doctrine Document 1 and considers whether an on-orbit capability is needed for its fulfillment. The discussion begins with the examination of threats to space systems, how they are likely to be attacked and the means with which to counter those attacks. The examination focuses on the space element and determines that a space-based defensive capability will be needed to protect orbital assets in the future. The defensive potential of ground-based systems and self-defending spacecraft are determined to be inadequate, leading to the conclusion that a dedicated, mission specific vehicle design is the best option for fulfilling the defensive counterspace function. Finally, preliminary considerations of vehicle design and mission capability indicate that the first iteration of this vehicle should be ground-stationed, reusable, and prepared to launch into earth orbit in time of heightened tensions or war to carry out the defensive counterspace mission.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Shaping the Engineer Force for the Asymmetric Threat
This monograph looks at the current state of the divisional engineer capability in both the heavy and light U.S. Army divisions. Its intent is to determine whether or not the divisional engineers are sufficiently capable of dealing with the challenges of the emerging asymmetric environment. The central theme behind this investigation is to investigate how world has changed since the end of the cold war and whether or not Army Engineers are reacting to the changes. The loss of the global bipolar environment has given way to a new era of increased instability and the emergence of dangerous asymmetric threats. The Army has begun the process of adapting to the new environment thru a long term Transformation process that will eventually yield the Objective Force. Unfortunately, it will be several years before that force is ready to be used and the current force must be ready to counter real world threats. The methodology for this paper began with an investigation of the new asymmetric environment. The Contemporary Operational Environment (COE) was chosen as the best model to compare engineer capabilities to. Divisional engineer capabilities were compared to several key principals that an asymmetric foe will likely use and a prioritized list of shortfalls was developed. The investigation looked at possible solutions to the shortfalls through reliance on echelon above division (EAD) augmentation and the new force developments embodied in the Force XXI concept and the Interim Force concept. The solutions suggested by EAD augmentation and force modernization both proved inadequate to overcome the shortfalls. The temporary solution to engineer shortfalls lies with a reorganization of engineer structure within the heavy and light "legacy" divisions. This reorganization calls for the inclusion of several engineer capabilities that are not currently resident in the division structure. The most significant of these are the addition of a modest general engineering capability andThis work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Protecting Commercial Space Systems
Key questions will address the impact on U.S. national security due to attacks on commercial space assets. What is the `real' impact of commercial space on the U.S. economy (not just spending)? How would loss of commercial space capabilities impact U.S. warfighting capability? What constitutes an attack on a commercial space system? How do we deter and detect an attack? How should the U.S. respond to such attacks, proportionally or massively? Finally, what policy and process changes are needed to protect our national security?This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Decision Analysis With Value-Focused Thinking as a Methodology in Structuring the Civil Engineer Operations Flight
The organizational structure of the civil engineer operations flight has been in a constant state of change since the flight's inception and is currently prescribed only to the element level. This requires an operations flight commander to decide on the organizational structure best suited for their unique situation without any guidance or support. This difficult decision is compounded by the numerous organizational structures currently in use and the myriad of installation-unique factors that impact the decision.To provide insight and defensible support for an operations flight commander faced with this decision, a value- focused thinking process was used to create a value model that aids in evaluating possible organizational structures. To ensure that the results of this research are applicable across the Air Force, the value model was created in a way that identifies the basic values of any operations flight commander. The resulting value model was then used to evaluate how well different organizational structures performed with respect to these generic values. To further strengthen the results and ensure their wide-ranging relevance, the model was used to evaluate a representative sample of organizational structures from the perspective of multiple scenarios.The results of this research provide an operations flight commander a concise, straightforward, and defensible means of selecting an organizational structure.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Forecasting Readines
According to many experts, the readiness of America's armed forces has deteriorated throughout the 1990s. In the Air Force, the combat readiness of its fighter aircraft has declined in varying degrees. One of the Air Force's indicators of combat readiness for its aircraft, the mission capable rate, is a rate primarily used to identify the percentage of aircraft that are able to perform their primary missions. From FY94 through FY98, the aggregate Air Force aircraft total not mission capable rate for maintenance (TNMCM) for all aircraft has steadily increased from 14 percent to 18.2 percent while total not mission capable rate for supply (TNMCS) increased from 5.5 percent in FY86 to 17.5 percent in FY00. The Air Force currently uses the Funding/Availability Multi-Method Allocator for Spares (FAMMAS) forecasting model to predict overall mission capable rates for each type of aircraft it has in its inventory. While the FAMMAS model does an excellent job of predicting mission capable rates based on funding data and other associated planning factors, it is does not explain the key drivers that influence mission capable rates, which limits its effectiveness as a management and decision- making tool.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Ground Source Heat Pumps vs. Conventional HVAC
The world is undergoing a dramatic transformation with regard to how it produces and consumes energy due to increasing demand from developing nations and diminishing new resource discoveries. In addition, there has been increased concern over the effect of carbon dioxide emissions on the environment. All of these issues have created a combined pressure to force the world to begin to redefine how energy is utilized. Geothermal or ground source heat pumps (GSHPs) may provide one potential solution to these problems.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Stretching the Umbilical Cord
This study addresses the question of whether or not the Air Force should continue to develop a Split Air Operations Center (AOC) capability whose components are geographically separated, electronically connected, and codependent for task accomplishment. The author analyzes the dilemma created by the Joint Forces Air Component Commander's (JFACC's) desire to collocate with both his AOC and the Joint Forces Commander (JFC) at a forward location, counterbalanced by the need to reduce deployed footprint for various reasons ? the most significant of which is to enhance his deployed force protection posture. The study examines the Split AOC as a potential solution to this dilemma. The paper begins by describing a contemporary, collocated AOC structure, as used by the Combat Air Forces' worldwide-deployable Numbered Air Forces. It then contrasts this contemporary AOC with the Split AOC paradigm.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Piezo-Electrochemical Transducer Effect Intercalated Graphite Micro-Electromechanical Actuators
The purpose of this research is to investigate the Piezo-Electrochemical Transducer (PECT) effect in intercalated graphite as a possible mechanism of actuation for micro-electromechanical systems (MEMS). This dissertation presents the results of research into the PECT effect in H2SO4-intercalated graphitized carbon fibers, including both electrical and mechanical characteristics of this effect. PECT fibers achieve up to 1.7% strain at 1.4 V of applied potential. In contrast, the piezoelectric material polyvinylidene difluoride (PVDF) generates only 0.01% strain and polysilicon thermal expansion between 0.02 and 0.06% strain depending on the thermal conductivity of the particular polysilicon that the actuators are fabricated in.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Determining the Orbit Locations of Turkish Airborne Early Warning and Control Aircraft Over the Turkish Air Space
This research provides optimal orbit locations that can be updated according to the threats, for Turkish AEW and C aircraft in the combat arena. Three combat scenarios Turkey might encounter are examined. Turkey can expect threats from everywhere. The worst cases for these scenarios include bad weather conditions and in Electronic Counter Measure (ECM) environment, adversary Surface to Air Missile (SAM) sites which are located in areas unknown to Turkish intelligence and no Suppression of Enemy Air Defense (SEAD) aircraft which can eliminate the SAM sites using High Speed Anti-Radiation Missiles (HARM). The concern is to cover and detect the threats as far as possible from Turkey without entering the lethal range of adversary SAM sites and airfields. The goal is to help decision makers decide how many AEW aircraft are needed to obtain full coverage.In order to provide optimum results, a Maximal Coverage Location Problem technique is used and the model is coded in MATLAB 2008a.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Increasing the Weaponization of Spaces
This paper addresses the issue of weaponization of space, or, more specifically, what would DoD like to do in/from space with weapons and what impedes DoD's ability to do this? Given the current environment, it appears that DoD should take prompt action to: (1) identify the U.S. and DoD policies which must be changed or developed to support weaponization of space; and (2) propose strategies for use of capabilities that result from weaponization of space. A key aspect of this effort will include developing a taxonomy of what it takes to do space control and force application from space, then identifying the specific impediments to each progressively more ambitious weaponization activity. The paper will briefly review current/emerging technologies that could be used to do space control and force application, primarily taking the position that technologies could be available to exploit space within the next 5-20 years if the U.S. decides to pursue their development.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Characterization of Functionally Graded Materials
The purpose of this study was to characterize the behavior of a functionally graded material through experimentation and analytical modeling. Functionally graded materials are a ceramic metal composite which transitions from metal on one face to ceramic on the opposite face. Creating reliable models required verifying the material properties. This was accomplished through the use of a static modulus of elasticity test as well as a dynamic ping test. The natural frequencies from the dynamic test were compared with finite element models to determine which material properties most accurately represented the functionally graded material. It was found that the material properties established experimentally by Hill and Lin produced the best models. A fracture surface was examined to determine the failure criteria for the prediction of failure in a cyclic loading scenario. It was determined that the material would fail in a brittle manner and the maximum principle stresses should be used to predict failure.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Air Force Civil Engineer Mobilization in a Joint Vision 2010 World
Rapid evolution in the international political, social, and military environment, coupled with budget pressures within the federal government, have created a fluid setting for the military services. As fundamental as aircraft to the Air Force's ability to protect U.S. interests at home and abroad are the support functions that provide deployed basing for aircraft and aircrew alike. What are the factors that influence the civil engineer's ability to launch, support and sustain deployed military operations within the context of this environment and the national military strategy established to meet these challenges? Do current civil engineer capabilities fulfill Joint Vision 2010 and Air Force "Global Engagement" strategies, now and in the future, for interaction in the New World order? What steps are Air Force civil engineers taking, or should they take, to improve their ability to support deployed military operations? This study concludes that Air Force civil engineering is substantially in step with the evolving character of the current strategies that enable the U.S. military to engage across the spectrum of new and anticipated future world environments.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Assessing Capabilities of the High Energy Liquid Laser Area Defense System Through Combat Simulations
High Energy Laser (HEL) technology continues to improve and its place in the battlefield is ever evolving. By combining the high energy delivery of solid state laser technology with the efficient thermal management of liquid laser technology, HELLADS has two main advantages over any HEL predecessors. One, the configuration is small and light enough to be carried on more tactical aircraft such as fighters. Two, the thermal management greatly increases HEL fire power by increasing dwell time on target. To assess HELLADS operational capabilities the test community has been challenged with how to effectively examine the advantages and limitations through a cost effective manner. Modeling and simulation supports this assessment as it yields itself easily to relatively low cost and robust testing methodologies. The challenge comes with building credible models through validation and verification of test parameters and scenarios. An Air Force Standard Analysis Toolkit model, the Extended Air Defense Simulation Model (EADSIM), is used in this study to meet these challenges. This research effort focuses on the assessment of the HELLADS operational capabilities through EADSIM. Of particular interest is the investigation of the envisioned HELLADS operational envelope and the potential advantages it offers over other HEL systems. Scenarios are applied to represent the Homeland Defense arena in which HELLADS is proposed to operate. Specifically this study explores what factors impact HELLADS effectiveness and suitability in the Homeland Defense scenarios examined.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
The Next Generation Munitions Handler Prototype Acquisition Campaign
The Air Force will improve the quality of the aircraft munitions loading process by fielding a new generation of munition handling equipment that incorporates emerging telerobotics technology. An active program is underway to develop an Next Generation Munitions Handler (NGMH) Advanced Technology Demonstrator (ATD). This project uses air campaign planning principals to address the development of the technology roadmap and dual use business case study required to transition the ATD into a full-scale prototype. A discussion of the history and performance requirements for telerobotic munition handling is provided as a background for creation of an initial critical technologies list. The maturity level and validity of that list is investigated through an intelligence preparation operation that supports the election of nine specific technology targets. Courses of action to bring those technologies to commercial-off-the-shelf availability are explored. Scenarios for technology application in a range of alternative military and commercial applications lay the groundwork for development of a dual use business case. Civilian industry coalition partners were identified. Creation of a full scale NGMH prototype acquisition campaign is now possible.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Chemical Mechanical Polishing Optimization for 4H-Sic
Scratch free surfaces are required for substrates used in epitaxial growth. Silicon carbide (SiC) is a substrate material that is used in the epitaxial growth of SiC, GaN, and InGaN electronic devices. Preliminary chemical mechanical polishing (CMP) studies of 1 3/8" 4H-SiC wafers were performed in an attempt to identify the polishing parameter values that result in a maximum material removal rate and thus reduce substrate polishing time. Previous studies reported increased material removal rates associated with increasing polishing temperature, slurry pH, pressure, and polishing pad speed. In the current study, the effects of temperature, slurry pH, polishing pressure, and polishing pad speed were examined independently while keeping other polishing parameters constant. Material removal rates were determined using pre and post-polish wafer mass measurements. Photographs at specific wafer locations were obtained before and after each polishing period and compared to calculated removal rates.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Effects of Environment on Creep Behavior of Nextel 720/Alumina-Mullite Cermaic Composite at 1200-C
The creep behavior of an oxide-oxide ceramic matrix composite (CMC) was investigated at 1200-C in laboratory air, in steam and in argon. The composite consisted of a porous aluminamullite matrix reinforced with lminated, woven mullite/alumina (Nextel/720) fibers. The composite had no fiber coating and reliedon its porous alumina/mullite matrix for flaw tolerance. Tensile stress-strain behavior was investigated and the tensile properties were measured at 1200C in laboratory air. Tensile creep behavior of the CMCs was examined for creep stress level of 73,91,1114 and 136 MPa. Creep run-out, set to 100h, was achieved for stress levelslt; 91 MPa in air. The presence of steam or argon accelerated the creep rates the N720/AM composite. Optical and scanning electron microscope (SEM) micrographs were used to examine fracture surfaces and to evaluate failure mechanisms. Fracture surfaces of the N720/AM composite were predominately planar. Limited areas of short fiber pull-out were observed for specimens tested at low creep stress levels in air.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Evaluating Management Strategies for Automated Test Systems/Equipment
The management of United States Air Force ATS/E presents a variety of issues that affect the long-term capability and mission readiness of weapon systems. Traditional procurement processes suggest that individual aircraft platform System Program Offices (SPOs) developed, improved and replaced ATE on an "as-required" basis. Increased obsolescence, however, and a concern for maintaining longer-term viability provided the necessary inertia for a movement towards the procurement and development of consolidated, common test equipment that would support multiple weapon systems. In 1998, the Air Force Chief of Staff directed HQ AFMC to establish a Common Support Equipment office to facilitate the combination of similar legacy ATE into common equipment. Today, some ATE continues to be managed by individual SPOs, while other ATE is primarily managed by the Automated Test Systems Division at Warner-Robins Air Logistics Center. This research examines the differences of these two approaches. Specifically, this research focuses on the management of two pieces of ATE for a mature aircraft system - the F-15.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Space Based Satellite Tracking and Characterization Utilizing Non-Imaging Passive Sensors
A technique is developed to determine the orbit of a sunlight illuminated satellite passing through the field-of-view of a sensor platform in a Highly Elliptical Orbit (HEO) and Geosynchronous orbit (GEO). The technique develops two different methods of initial orbit determination. The first relies on the Gauss initial orbit determination method to develop an estimate of the state from angular data. The second method relies on positional data of the target relative to the Earth's background to determine an estimate of the state. These estimates are then refined in a non-linear least squares routine. This estimate of the state is then used to identify the target from the Air Force Space Command satellite catalog.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Coverage of Continuous Regions in Euclidean Space Using Homogeneous Resources With Application to the Allocation of Phased Array Radar Systems
Air surveillance of United States territory is an essential Department of Defense function. In the event of an incoming aerial attack on North America, the DoD, Department of Homeland Security, and Federal Aviation Administration surveillance capabilities are critical to discovering and tracking the threat so that it can be eliminated. Many of the currently used surveillance radar will reach the end of their design life within ten to twenty years. By replacing the current radar network with a single integrated network of Multifunction Phased Array Radar (MPAR) units, surveillance capabilities can be enhanced and life cycle cost can be reduced. The problem of determining the location of required MPAR units to provide sufficient air surveillance of a given area is a large problem that could require a prohibitively long time to solve. By representing the area of surveillance as a polygon and the MPAR units as guards with a defined circle of detection, this problem as well as similar surveillance or coverage problems can be expressed with easily adjustable parameters. The problem of covering the interior and exterior of a polygon region with a minimal number of guards with homogeneous capabilities is not well researched. There are no methods for determining the minimal number of guards required to cover the interior and exterior of a polygon at a desired coverage level less than 100 percent.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Lethality, Legality, and Reality
This study evaluates the potential for non-lethal weapons to become viable tools for the air support of ground forces in military conflicts. During the Cold War, the US Air Force developed conventional air-support aircraft and munitions to fight Soviet mechanized infantry and armor in the central plains of Europe. Since the end of the Cold War, the United States increasingly confronts adversaries in situations where it is not in the national interest to use destructive force. In response to this new security environment, the Department of Defense has established the Joint Non-Lethal Weapons Program and deployed a myriad of non-lethal devices to conflicts around the world. All non-lethal weapons in the US armed forces, however, are ground weapons and are severely limited in range. Aircraft could provide the perspective and added range joint force commanders desire; thus, this thesis explores the potential for aircraft to provide non-lethal force options. Many factors contribute to the viability and acceptance of non-lethal weapons for offensive air support. One is technology.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Reclaiming Lost Ground
Airborne Electronic Attack is a critical component of offensive counter air as evidenced by air operations during Vietnam through Operation Allied Force. The decisions Air Force leaders make not to fund AEA in a fiscally constrained environment reveal how service culture views electronic warfare. Multiple theorists on military mission development provide insight into how a service develops a mission. A survey of military innovation literature reveals three complementary models for how a military service evolves in its core mission areas, however, fringe mission development requires a fourth theory on how an organization allocates limited resources. Dr. Barry R. Posen identifies civilian intervention against resistant military leadership as the key item in military innovation. Dr. Stephen Peter Rosen concludes that military innovation occurs as the military institution recognizes it must change to meet new international security situations, and internal groups within the service compete. Owen Reid Cot offers a third proposition on the source of innovation; the military changes dramatically when services compete. Asa A. Clark, IV surveys how militaries reform under budgetary constraints. This thesis integrates the four mission development theories using an adaptation of John W. Kingdon garbage can model.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
A Future-Based Risk Assessment for the Survivability of Long Range Strike Systems
The United States Air Force today faces the challenge of allocating development resources to prepare for future force projection requirements. In particular, the Air Force's core competency of Global Attack implies a future capability that can quickly and successfully deliver combat effects anywhere in the world with impunity. Understanding that the future threat environment is dynamic and that continued advancements by adversaries will likely degrade the technical superiority of today's weapon systems, the need arises for a planning model to direct development funding to areas with the greatest probability of successfully defending the strike vehicle of 2035. Examining this problem posed two distinct challenges. The first was to determine the most likely course of Integrated Air Defense System technology through the time period of interest--allowing for plausible disruptive technologies that generate orders-of-magnitude improvement in capability or even change the nature of air defense systems. The second challenge was to characterize future adversaries--requiring a broad look at political and economic trends as presented in AF 2025, SPACECAST 2020 and other relevant future studies. Based on these studies, threat scenarios were generated from technical assessments of emerging technologies and evaluated using the Risk Filtering, Ranking and Management (RFRM) technique (Haimes, 2004) to explore the most severe threats to a future global strike air vehicle. The application of RFRM to the problem created a coherent threat hierarchy that enables the decision maker to examine anticipated hostile systems that may counter key U.S. strengths of stealth, speed, and high altitude operations.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Categorizing High Energy Laser Effects for the Joint Munitions Effectiveness Manual
With the high risk and cost in fielding High Energy Laser (HEL) weapon systems, the development process must include computer simulation models of weapon system performance from the engineering level up to predicting the military worth of employing specific systems in a combat scenario. This research effort focuses on defining how to measure lethality for HEL weapons in an Advanced Tactical Laser (ATL) scenario. In order to create an effective measure for direct comparison between the emerging laser weapon system and existing conventionally delivered weapons, lase time in seconds is presented as a measure comparable to rounds required to cause the desired effect at the target. An examination of input parameters which influence the output power of the laser at the target and thus the required lase time is presented with particular attention being paid to atmospheric conditions and vulnerable bucket size.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Determining the Surface-to-Air Missile Requirement for Western and Southern Part of the Turkish Air Defense System
An air defense system is vital for countries to protect their homelands. Today, air defense systems consist of integrated systems such as early warning radars, fighter aircraft, airborne early warning aircraft and surface-to-air (SAM) systems. The Turkish air defense system does not have long range SAM systems. Turkey plans to procure SAM systems to protect her borders. This research develops two location optimization models to optimally locate SAM sites to defend specified areas of the nation. One of the models finds the minimum number of SAM sites to cover the specified area; the other finds the maximum coverage for a given number of SAM sites. The model is formulated as an integer program, and the LINGO 10 software package is used to solve the model. Three candidate SAM systems are examined. All models use the maximum range of each SAM system. Solutions are presented for the decision makers to examine. Sensitivity analysis is used to explore how much the optimal solution(s) change given fluctuations in input values. The main objective of this research is to provide the Turkish Air Force coverage information regarding the three candidate SAM systems. This research also provides a model and an approach that can be used to examine other candidate systems. The results and models presented in this research should facilitate development of a more efficient and effective air defense system to support Turkey's homeland defense.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Empowering First Responders
The terrorist attacks of September 11th, 2001, marked a watershed event for America. No longer can it be expected that the American military will fight our nations battles on foreign lands while America's populace is safe back in the homeland. Now, the new frontlines of this War on Terrorism are defined by where and when an attack happens; the new soldiers are America's first responders. Unfortunately, as 9-11 demonstrated, these new frontline warriors do not fully possess the tools, training, or most importantly, the interoperability that their military counterparts have perfected over the past several decades. Among these tools, communications capability represents the most important force multiplier on the battlefield. For the first responder, communications capability is absolutely essential. One emerging communications and data-sharing tool that can greatly empower first responders, and provide them with greater situational awareness and decision superiority, is Peer-to-Peer Technology (P2P). P2P technology allows two or more computers to establish direct contact without a central entity. Such technology provides a rapidly established, flexible, and dynamic architecture. Moreover, it provides a robust, reliable, and distributed information-sharing capability for homeland security applications. US Northern Command (USNORTHCOM) represents the Department of Defense's operational command for Homeland Security. One of its key missions is to provide military assistance to civil authorities, including consequence management operations during terrorist attacks.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Use of Multivariate Techniques to Validate and Improve the Current USAF Pilot Candidate Selection Model
Training pilots for the USAF costs millions of dollars every year. There are seven points of entry into Air Force Undergraduate Pilot Training (UPT). Each source has its own selection process to screen candidates accepted into UPT. The Pilot Candidate Selection Method (PCSM) seeks to ensure the highest possible probability of success at UPT. PCSM applies regression weights to a candidate's Air Force Officer Qualification Test (AFOQT) Pilot composite score, self-reported flying hours, and five Basic Attributes Test (BAT) score composites. PCSM scores range between 1 and 99 and are loosely interpreted as a candidate's probability of passing UPT. The goal of this study is to apply multivariate data analysis techniques to validate PCSM and determine appropriate changes to the model's weights. Performance of the updated weights is compared to the current PCSM model via Receiver Operating Curves (ROC). In addition, two independent models are developed using multilayer perceptron neural networks and discriminant analysis. Both linear and logistic regression is used to investigate possible updates to PCSM's current linear regression weights. An independent test set is used to estimate the generalized performance of the regressions and independent models. Validation of the current PCSM model demonstrated in the first phase of this research is enhanced by the fact that PCSM outperforms all other models developed in the research.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Ucav
Air superiority is an essential military mission, and will continue to be so for the foreseeable future. Control of the air is not an end of its own, but rather it provides the flexibility and freedom of action central to a full range of military capabilities. In the coming century the United States will confront a number of disparate and ambiguous challenges to its hegemony. The resources available to meet those challenges will undoubtedly be constrained. Extremely long lead times in the acquisition and procurement of new technologies mean that now, as the F-22 Raptor begins to replace the venerable F-15 Eagle, the next- generation air-superiority fighter is entering development. Unmanned aircraft must be considered as an alternative to manned aircraft for this critical mission. While cost has been the driving factor for advances in UCAV, technology has been the major limitation. This thesis concludes that an air-superiority UCAV should be feasible by the year 2025 and that it should provide an effective and affordable alternative to manned air-superiority fighters.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Creep and Fatigue Interaction Characteristics of PWA1484
One of the main methods for predicting the service life of jet engine turbine blades is through creep analysis. A sample of the turbine blade material will be mechanically tested to characterize its creep performance. This characterization will be used to determine safe operating conditions for the material. While methods for modeling creep behavior are generally well developed, this constant load creep testing does not fully represent the loading conditions present in a jet engine due to cyclic loading caused by the mission profile and throttle movements. As the industry seeks to become more accurate in physics based modeling of materials that are used in turbine blades, incorporation of these cyclic loads into the characterization of turbine blade materials is needed. It will be important to understand what effect pre-existing creep will have on fatigue life and what effect pre-existing fatigue loading will have on creep life. This research gives microstructural observations as well as data analysis of samples of PWA1484 tested at 871-C in creep-fatigue environment. This research resulted in the conclusion that prior fatigue cycling results in a non-linear reduction in the amount of primary creep, and an earlier transition to tertiary creep in PWA1484.This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
