108 research outputs found

    Multiple Application Propfan Study (MAPS): Advanced tactical transport

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    This study was conducted to ascertain potential benefits of a propfan propulsion system application to a blended wing/body military tactical transport. Based on a design cruise Mach no. of 0.75 for the design mission, the results indicate a significant advantage in various figures of merit for the propfan over those of a comparable technology turbofan. Although the propfan has a 1.6 percent greater takeoff gross weight, its life cycle cost is 5.3 percent smaller, partly because of a 27 percent smaller specific fuel consumption. When employed on alternate missions, the propfan configuration offers significantly improved flexibility and capability: an increase in sea level penetration distance of more than 100 percent, or in time-on-station of 24 percent, or in deployment payload of 38 percent

    Air Force Institute of Technology Contributions to Air Force Research and Development, Calendar Year 1987

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    From the introduction:The primary mission of the Air Force Institute of Technology (AFIT) is education, but research and consulting are essential integral elements in the process. This report highlights AFIT\u27s contributions to Air Force research and development activities [in 1987]

    Management: A continuing bibliography with indexes

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    This bibliography lists 551 reports, articles, and other documents introduced into NASA scientific and technical information system in 1980

    Aerospace Ground Equipment\u27s Impact on Aircraft Availability and Deployment

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    The first purpose of this thesis was to study the effects of four factors on aircraft availability: the aerospace ground equipment (AGE) design configuration, the mean time between failure (MTBF) of AGE, the mean time to repair (MTTR) AGE, and the travel time to transport the AGE around the flightline. A simulation developed by Carrico (1996) that has its foundation based on the Logistics Composite Model (LCOM) was used. ANOVA results indicated that the present estimates of these factors are too broad for trade studies that include an estimate of aircraft availability to begin. The time it takes AGE to travel from one place to another around the flightline strongly affected aircraft availability. It is recommended that further AGE field observation and data collection be accomplished before the merits of one AGE cart technology is compared to another. The second purpose of this thesis was to collect as much information on the deployability and affordability of AGE as possible. Although much of the information collected was a few years old, the results suggest that new technologies improve the deployment footprint and the combined acquisition and deployment costs. Background information about support equipment and AGE is included in the study

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    Factors and Interactions That Affect Air Force C-17 Aircraft Mission Capable Rates

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    Given the high demand for mission capable airlift aircraft and considering increasing budget pressures, Air Mobility Command decision makers need a better understanding of mission capable (MC) rate-related factors and their interactions for mobility aircraft. This is needed to comprehend how issues such as airlift funding, current and future force reductions, and manning and experience levels may impact future MC rates for air mobility assets. Existing tools do not incorporate several key variables that the literature suggests are related to MC rates. Using a longitudinal approach, this thesis combines C-17 aircraft data with a structural equations modeling approach to evaluate relationships between MC rates and selected variables. The research addresses linkages between several areas not addressed in prior research and currently used models, and provides recommendations for both existing tools and for further research

    Aeronautical engineering: A continuing bibliography with indexes (supplement 266)

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    This bibliography lists 645 reports, articles, and other documents introduced into the NASA scientific and technical information system in May 1991. Subject coverage includes: design, construction and testing of aircraft and aircraft engines; aircraft components, equipment and systems; ground support systems; and theoretical and applied aspects of aerodynamics and general fluid dynamics

    Aircraft Maintenance Organizational Structure Changes an Antecedent Model

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    Air Force leadership has ordered the development of an Enterprise Resource Planning (ERP) system called the Expeditionary Combat Support System (ECSS). Many current jobs and positions will be streamlined, restructured or removed, while some will certainly be created to handle the new requirements associated with ECSS. The structure of the Air Force is certain to change with the implementation of ECSS. The Air Force has used many maintenance organizational structures since its inception in 1947. The focus of this research is to analyze past organizational structures to define key factors that affect organizational change. A case study style methodology was applied to eight periods of maintenance-related organizational change. Strategic initiatives, information and maintenance-related technology advances, change and project management practices were evaluated for relational affect. The researcher found that the strongest relational variables leading to organizational structure change were force-size change, budget change and major conflict occurrence or cessation

    Air Force Institute of Technology Research Report 1997

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    This report summarizes the research activities of the Air Force Institute of Technology\u27s Graduate School of Engineering and the Graduate School of Logistics and Acquisition Management. It describes research interests and faculty expertise; list student theses/dissertations; identifies research sponsors and contributions; and outlines the procedure for contacting either school
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