Dissertations / Theses on the topic 'Deployment of aircraft'

Amilitary aircraft deployment problem from the United States Transportation Command is modeled as a generalized transportation problem with side constraints and solved using a general purpose linear programming package. The model involves the assignment of military units and material to aircraft and th assignment of aircraft to missions in order to appraise the utility and to determine the assets required for preliminary military operation plans. A transformation of this model which aggregates variables relating to the early or late delivery of requirements is also described. A specialized algorithm which separates an instance of the model into subgroups of independent subproblems is also explored. Lastly, an integer rounding model is described which converts continious solutions to integer in order to facilitate implementation of the former models whith an existing post-solution processor. Excellent quality solutions are provided for problems involving nine routes, 80 movement requirements distributed across two cargo classes involving 200,000 short tons of freight, and 250 aircraft using four different aircraft types for each of 12 time periods. The problem, which has the potential of having over 10,000 variables, is reduced significantly using variable reduction and the aggregation transformation. The reduced problem requires approximately 1,000 variables and 300 constraints and solutions are obtainable in under 14 minutes using the General Algebraic Modeling System on an 80286-based personal computer

In this thesis, Quality Function Deployment for aircraft maintenance organizations is considered. Assessment and evaluation of quality management in aircraft maintenance organizations is the key to ensure safety, reliability, and the assurance of quality. At present, companies around the world have an absolute need for quality management systems in order to help them to develop and manage better their activities. Improving the way in which organizations handle their organizational management plays a major role in raising the standard of the quality of the product or the quality of the service they deliver. The challenge of implementing quality approaches in the management of aircraft maintenance organizations is appealing since it is recognized to save time and money. As a result, the organization can become more efficient, more competitive in its domain and finally more profitable. Quality management is, therefore, an essential function for maintaining and improving the quality of the services and products provided by aircraft maintenance organizations. First necessary background and theoretical knowledge on aircraft maintenance organizations and quality management is presented in detail. This is achieved by performing an analysis of the needs and the means for improving quality in the maintenance activities. The proposed analysis approach is a combination of Quality Function Deployment, and Fuzzy Logic theory. The Quality Function Deployment is used as an analysis tool to translate the customer needs and requirements into service features. The Quality Function Deployment involves the construction of a matrix structure which allows the assessment and ranking of different course of action with respect to quality. Since many opinions from experts are expressed in linguistic terms it appeared that fuzzy logic could improve this analysis process. Then, the final part of the thesis is devoted to the development of a fuzzy quality function deployment. The proposed analysis approach is then illustrated in the case of aircraft maintenance organizations where the objective is to increase fleet availability, maintain aircraft reliability, decrease servicing time, and limit investment costs
Dans cette thèse, le déploiement de la fonction de la qualité pour l'organisation de l'entretien des avions est considérée. L'évaluation de la gestion de la qualité dans les organismes de maintenance des avions est la clé pour garantir la sécurité, la fiabilité et l'assurance de la qualité. De nos jours, les entreprises partout dans le monde ont un besoin absolu de systèmes, gestion de la qualité afin de les aider à développer et à mieux gérer leurs activités. La façon dont les organisations gèrent leurs gestions de l'organisation joue un rôle majeur dans l'amélioration du niveau de la qualité du produit ou la qualité du service qu'elles fournissent. Le défi de la mise en œuvre de la démarche qualité dans la gestion de la maintenance des avions est important car il doit conduire à des économies de temps et d'argent. La gestion de la qualité est, par conséquent, une fonction essentielle pour maintenir et améliorer la qualité des services et produits offerts par les organismes de maintenance des avions. Dans cette thèse les prés requis et connaissances théoriques sur l'organisation de la maintenance et la gestion de la qualité sont présentés en détail. Ceci est réalisé en effectuant une analyse des besoins et des moyens pour améliorer la qualité dans les activités d'entretien. L'approche d'analyse proposée est une combinaison du déploiement de la fonction de la qualité et de la Logique Floue. Le déploiement de la fonction de la qualité est utilisé comme un outil d'analyse pour traduire les besoins des clients et les besoins en qualité des services. Le déploiement de la fonction de la qualité comprend la construction d'une structure matricielle permettant d’évaluer et de comparer les différents plans d’action. Puisque de nombreuses opinions d'experts sont exprimées en termes linguistiques, il semble que la Logique Floue pourrait améliorer ce processus d'analyse. La dernière partie de cette thèse est consacrée à l'élaboration du déploiement de la fonction de la qualité dans le cadre de la Logique Floue. L'approche d'analyse proposée est ensuite illustrée dans le cas de l'organisation de l'entretien d’une flotte d’avions. L'objectif est d'augmenter la disponibilité de la flotte, de maintenir sa fiabilité, de diminuer le temps du service de maintenance, de limiter les coûts d'investissement

Thesis (M.S. in Aeronautical Engineering) Naval Postgraduate School, March 2000.
Thesis advisor(s): Newberry, Conrad F. "March 2000." Includes bibliographical references (p. 81-83). Also available online.

Thesis (Ph. D.)--West Virginia University, 2008.
Title from document title page. Document formatted into pages; contains xv, 294 p. : ill. (some col.). Includes abstract. Includes bibliographical references.

The retention of sailors is paramount to the viability of the United States Navy. While numerous aspects, including pay, benefits, family issues, etc., factor into the decision of each sailor to leave the Navy, job satisfaction is one of the most important. This study examines the extent job satisfaction played in sailors' decisions to leave after their initial enlistment. The Navy's own survey instrument was utilized to gather the data from sailors who were separating from the U.S.S. John F. Kennedy (CV-67) at the end of their first enlistment contract. The survey questions were broken down into three general areas: Job Satisfaction, Pay and Benefits, and Quality of Life, to measure the level of satisfaction within each of these areas. The relationship between gender, martial status and ethnic group were key components in analyzing each of the key areas. The results of these findings are reviewed and discussed.

Thesis (M.S. in Management) Naval Postgraduate School, December 1995.
Thesis advisor(s): Martin J. McCaffrey, W. Max Woods. "December 1995." Includes bibliographical references. Also available online.

Small unmanned aircraft systems (sUAS) will become a disruptive force on the modern battlefield. In recent years, sUAS size and cost have decreased while their capability has increased. They have forced a reconsideration of the air superiority paradigm held since the First World War. Perhaps their most attractive, and worrisome, feature is the huge range of combat roles that they might fulfill. The presence of sUAS on future battlefields is certain, but the role they will play and their impact on those battlefields are not. This work presents a decision support framework for sUAS deployment in small infantry units. The framework is designed to explore and evaluate multiple sUAS-small-unit deployment concepts' impact on small unit effectiveness in a combat scenario of interest. The framework helps decision makers identify high-level sUAS deployment principles for testing and validation in physical experiments before sUAS are implemented on the battlefield. The decision support framework comprises the following: 1) a definition of the sUAS-small-unit deployment concept design space and combat scenario, 2) an agent-based computer model for exploring sUAS deployment concepts, 3) a set of analysis tools for evaluating sUAS deployment impact on combat effectiveness, and 4) suggestions for synthesizing high-level sUAS deployment principles from the analysis. In this work, the decision support framework for sUAS-small-unit deployment is used to explore and evaluate the impact of deploying an infantry platoon with between one and nine unmanned aerial vehicles (UAV) operating in a reconnaissance role while executing one of several sUAS patrol pattern variants. In a scenario in which a defending platoon uses sUAS to intercept and aid in indirect fires targeting against a platoon of attacking infantry, the sUAS were shown to markedly improve the defending platoon's combat effectiveness. The framework is used to synthesize several key principles for sUAS deployment in the scenario. It shows that, when fewer UAVs are deployed, short-range sUAS patrols improve defender combat effectiveness. Conversely, when more UAVs are deployed, long-range sUAS patrols improve the defenders' ability to target attacking units with indirect fires, increasing the firepower concentrated against opponents. The analysis also shows that increasing the number of deployed UAVs improves the likelihood of defending warfighters surviving the engagement and the defenders' ability to detect and engage the attackers with indirect fires. Finally, the framework shows that sUAS can force alterations in attacker behavior, removing them from combat by non-violent, but highly effective, means.

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The author examines the incremental costs and benefits associated with a change from six-month unit deployments to one-year unit deployments. The analysis is based primarily on five fighter squadrons participating in the Marine Corps' Unit Deployment Program and takes in the period July 1976 to October 1988. Regression analysis is used to project transportation cost savings of $4 million in real terms from FY 1989 through FY 1993. With a change to a one-year Unit Deployment Program, fighter squadrons should experience net increases in aircraft readiness, aircrew training readiness, and personnel retention.
http://archive.org/details/oneyearudpcostbe00hack
Lieutenant Colonel, United States Marine Corps

This thesis examines the process of introducing a new aircraft into the service, in particular by the steps from initial vision of a new aircraft until after the aircraft. The content of the thesis consists of seven parts. In the first four sections, I describe the organizations involved in aviation and reliability, physical principles of aircraft systems, accident statistics, regulatory requirements. The fifth section focuses on reliability and describes the procedures for the analysis of reliability. The sixth part is focused on the procedure for introducing new aircraft into service and also includes the methodology for eliminating the element of lack of confidence, which was one of the main objectives of this work. The seventh part is a demonstration of the procedure for the introduction of aircraft into operation.

Este trabalho consiste no desenvolvimento de uma metodologia de otimização multidisciplinar de projeto conceitual de aeronaves. O conceito de aeronave otimizada tem como base o estudo evolutivo de características das categorias imediatas àquela que se propõe. Como estudo de caso, foi otimizada uma aeronave de treinamento militar que faça a correta transição entre as fases de treinamento básico e avançado. Para o estabelecimento dos parâmetros conceituais esse trabalho integra técnicas de entropia estatística, desdobramento da função de qualidade (QFD), aritmética fuzzy e algoritmo genético (GA) à aplicação de otimização multidisciplinar ponderada de projeto (OMPP) como metodologia de projeto conceitual de aeronaves. Essa metodologia reduz o tempo e o custo de projeto quando comparada com as técnicas tradicionais existentes.
This work is concerned with the development of a methodology for multidisciplinary optimization of the aircraft conceptual design. The aircraft conceptual design optimization was based on the evolutionary simulation of the aircraft characteristics outlined by a QFD/Fuzzy arithmetic approach where the candidates in the Pareto front are selected within categories close to the target proposed. As a test case a military trainer aircraft was designed target to perform the proper transition from basic to advanced training. The methodology for conceptual aircraft design optimization implemented in this work consisted on the integration of techniques such statistical entropy, quality function deployment (QFD), arithmetic fuzzy and genetic algorithm (GA) to the weighted multidisciplinary design optimization (WMDO). This methodology proved to be objective and well balanced when compared with traditional design techniques.

Ces dernières années, la conception de produit vise de plus en plus à remettre le client aucentre du processus de développement. De nouvelles méthodes et outils ont permis de formaliser nonseulement l’identification des besoins et des attentes du client mais également leur transformation enexigences. Cependant, malgré les progrès récemment apparus dans ce domaine, la notion de valeurperçue par le client qui est associée au produit reste faiblement considérée durant le développement duproduit alors que la perception de cette valeur par le client va jouer un rôle clé au moment du choix duproduit.Dans cette thèse, nous proposons une approche normative visant l’intégration de la notion devaleur du produit dans le processus d’établissement des exigences. Un état de l’art présente lesconcepts et les pratiques impliqués dans le déploiement de la fonction de qualité, étroitement liée auprocessus de spécification des exigences basé sur la valeur. Ces concepts sont relatifs aux notionsd’objectifs, de modèles de la valeur, de fonctions d’utilité multi attributs et de hiérarchie et de réseauxd’objectifs.Notre approche se déroule en 4 étapes : (1) identifier et structurer les objectifs à partir del’expression des attentes du client, (2) spécifier les attributs de la valeur perçue par le client etconstruire un modèle de la valeur client, (3) transformer les objectifs en exigences pour construire unmodèle global de la valeur produit et (4) dériver ce modèle global en un modèle de la valeur pourchaque composant du produit. Cette approche permet ainsi de prendre en compte explicitement lavaleur produit perçue par le client en l’intégrant dans les phases de développement, ce qui favorise uneconception proactive dirigée par la valeur.Nous l’illustrons sur un exemple d’avion de ligne développé en Vanguard Studio. Cet exemplea été élaboré par l’ensemble des partenaires au cours du projet Européen IST CRESCENDO et sert decas-test pour ce projet
Recently customer-based product development is becoming a popular paradigm. Customer needsand expectations are identified and transformed into requirements in systematic processes for productdesign with the help of various methods and tools. However, in many cases, these approaches fail tofocus on the perceived value that is crucially important when customers make the decision ofpurchasing a product. The requirements specification derived from these approaches are typicallyvalue-implicit.In this thesis, a prescriptive approach to derive value-based requirements specification is proposedby integrating the concept of value into the house of quality of quality function deployment. Anintegrated set of theories, methods and concepts is introduced in order to mitigate the sevenmethodological problems of house of quality regarding to establishing appropriate value-basedrequirements specification. The foundations of the approach include concepts of objective, valuemodel and consequence model, methods of means-ends objectives network, fundamental objectiveshierarchy, response surface methodology and value-driven design, and theory of multi-attribute utilitytheory. The procedure of the approach is a four-step process: (1) identify and structure objectives frominitial customer statements of expectations, (2) specify attributes and construct customer value model,(3) transform fundamental objectives into engineering characteristics to construct system value model,and (4) derive component value models from system value model. Through this procedure, initialcustomer statements can be reasonably derived into customer value model, system value model andcomponent value model. The benefits of the approach are that it enables (1) reasonably qualifying andquantifying customer value, and performing value modeling and simulation, (2) perceived customervalue being subsequently used reactively for design evaluation, and proactively for value-drivendesign.The approach is applied in the context of a European Community’s R&D project CRESCENDO tohelp constructing airlines’ group value model for commercial aircraft development. This applicationfocuses on the first two-steps of the approach, and the value models are implemented in businesssoftware Vanguard Studio

碩士
開南大學
觀光運輸學院碩士在職專班
103
Taiwan is surrounded by abundant oceans. The number of offshore search and rescue (SAR) cases happened increasing year by year as rising maritime activity because of the world economic and technological making great strides. It’s no obstacle and no doubt in air to allow performing the offshore SAR mission 24 hours, day and night. There are only two offshore SAR mission professional performing units in Taiwan currently. There are National Airborne Service Corps (NASC) and the Air Force Rescue Team. But the NASC’s AS-365N helicopters are main performing offshore SAR mission resourse in Taiwan, the helicopters just do search but rescue action because lack of night SAR equipment. So the Air Force Rescue Team is the only one resource that provide the capability of performing night offshore SAR mission completely. But it need spend more additional time to fly to another airport to find refuel aid service for reaching offshore victim area when performing the south, north, northwest and southeast of Taiwan of the offshore SAR mission. This kind of spending time action cannot save a critical situation for life-saving. It must be haggled over every cent. NASC will receive total of 15 UH-60M helicopters from 2015 to 2019. UH-60M helicopter is provided superior performance and equipment that hold the great SAR energy to perform the offshore SAR mission in 24 hours and to enhance the offshore SAR mission resource during the night. The main purpose of this study was to find the maximum benefit to set the UH-60M new bases which can provide the aviation service resource to perform offshore SAR mission that according to the flight performance of UH-60M for shorten the flight time from the base to offshore victim area in Taiwan. In order to provide the best life-saving service quality, this study will collect offshore SAR performing history datas, then using cluster analysis and location theory to research and analysis of the position of the number of the bases deployed for UH-60M helicopters of NASC.