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Aircraft Maintenance Organizational Structure Changes An Antecedent Model, Jeffrey M. Durand
Aircraft Maintenance Organizational Structure Changes An Antecedent Model, Jeffrey M. Durand
Theses and Dissertations
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 …
An Analysis Of Usaf Aircraft Noise And Hedonic Property Values, Melissa R. Johnson
An Analysis Of Usaf Aircraft Noise And Hedonic Property Values, Melissa R. Johnson
Theses and Dissertations
The primary purpose of the research was to evaluate whether there was a significant difference in housing values of those affected by the noise of USAF aircraft. The secondary purpose was to evaluate whether there was a significant difference in housing values located near USAF bases with and without aircraft noise and to evaluate whether type of aircraft changed the results created by the aircraft noise. This research effort found that homes located within the 65 dB DNL contour of US Air Force installations showed a significant negative impact due to the presence of aircraft noise when studied with the …
Examining The Impact Of Quality Assurance Manning Practices In Usaf Aircraft Maintenance Units, Terry D. Moore
Examining The Impact Of Quality Assurance Manning Practices In Usaf Aircraft Maintenance Units, Terry D. Moore
Theses and Dissertations
The purpose of this research was to examine the impact that current USAF Quality Assurance (QA) manning practices has on key aircraft wing- and unit-level metrics. Interviews and surveys culminated in development of a QA Manning Effectiveness Matrix. We then used the matrix to calculate historical QA manning effectiveness at 16 ACC bases. Effectiveness scores were regressed with associated historical data for 26 metrics derived from a Delphi survey. Nine metrics were deemed statistically significant, including break rates, cannibalization rates, flying schedule effectiveness rates, key task list pass rates, maintenance scheduling effectiveness rates, quality verification inspection pass rates, repeat rates, …
Hybrid Stochastic Models For Remaining Lifetime Prognosis, Steven M. Cox
Hybrid Stochastic Models For Remaining Lifetime Prognosis, Steven M. Cox
Theses and Dissertations
The United States Air Force is developing its next generation aircraft and is seeking to reduce the risk of catastrophic failures, maintenance activities, and the logistics footprint while improving its sortie generation rate through a process called autonomic logistics. Vital to the successful implementation of this process is remaining lifetime prognosis of critical aircraft components. Complicating this problem is the absence of failure time information; however, sensors located on the aircraft are providing degradation measures. This research has provided a method to address at least a portion of this problem by uniting analytical lifetime distribution models with environment and/or degradation …
Analysis And Forecasting Of U.S. Navy Operating And Support (O&S) Costs For Rotary Aircraft, Christopher J. Wilkes
Analysis And Forecasting Of U.S. Navy Operating And Support (O&S) Costs For Rotary Aircraft, Christopher J. Wilkes
Theses and Dissertations
This research explores forecasting techniques to estimate the Cost per Flying Hour (CPFH) for Navy rotary aircraft. Three separate forecasting techniques were evaluated to better predict the CPFH for better estimating and budgeting by the U.S. Navy. The process begins by empirically analyzing Operating & Support cost categories for each helicopter. Trends were examined in CPFH. For forecasting purposes, actual CPFH figures were compiled from 1997 to 2003 for the CH-46D, the CH-53D, the MH-53E, the SH-60F, the UH-1N, and the UH-3H helicopters. The forecasting techniques explored were the 3-year moving average, the single exponential smoothing method, and Holt's linear …
Prepositioned Trailers For Aircraft Battle Damage Support, Scott M. Murray
Prepositioned Trailers For Aircraft Battle Damage Support, Scott M. Murray
Theses and Dissertations
Air superiority is essential in today's wartime environment. Aircraft that are damaged and not returned to combat can have a considerable impact on the quest for dominance in the air. To maintain operational effectiveness, an organization must have the capability to quickly repair damaged aircraft. The purpose of an Aircraft Battle Damage Repair (ABDR) program is to rapidly and effectively repair damaged aircraft to fly additional operational sorties and further contribute to wartime objectives. This capability must consist of providing the necessary tools and equipment for the rapid repair of aircraft. When an ABDR team deploys in support of an …
A Comparative Analysis Of The Cost Estimating Error Risk Associated With Fly Away Costs Vs Individual Components Of Aircraft, Jonathan D. Ritschel
A Comparative Analysis Of The Cost Estimating Error Risk Associated With Fly Away Costs Vs Individual Components Of Aircraft, Jonathan D. Ritschel
Theses and Dissertations
A shrinking workforce, unstable budgets, and rapidly changing objectives under stricter time constraints characterize today's cost analysis and acquisition environment. In concert with this environment, cost analyst positions have rapidly decreased as demonstrated by Aeronautical Systems Centers 54% decline in total authorized slots from 1992 to 2001. The question is how to deal with this more with less' mentality. The purpose of this research is to investigate and measure the risks associated with taking a macro versus micro approach to aircraft cost estimation. By analyzing the fidelity of a cost estimate developed at the flyaway cost level versus a cost …
Advanced Planning And Scheduling In The United States Air Force Depot-Level Maintenance, Shenn-Rong Shyong
Advanced Planning And Scheduling In The United States Air Force Depot-Level Maintenance, Shenn-Rong Shyong
Theses and Dissertations
In the post cold war environment, the rapid deployment of combat capability is critical. Deployment lift capability is limited, however, so the real-time selection of the optimal combat asset mix that balances capability provided and sustainment required has become paramount. In this model, the value of a force mix is determined by the sum of the individual weapon system "suitabilities" against their assigned missions. The value is constrained by the numerical limits on the items required to create and support the force mix, and the lift required to move these items. The research considered heuristic and complete enumeration methods against …
Use Of Critical Chain Scheduling To Increase Aircraft Availability, Daniel D. Mattioda
Use Of Critical Chain Scheduling To Increase Aircraft Availability, Daniel D. Mattioda
Theses and Dissertations
This study addresses the operation and support cost differences between the TUAF C-130E & C-130B, and the USAF C-130J aircraft. The TUAF C-130s have been being used for more than 30 years and changing world situations give armed forces different roles, and Turkey participates in all peacekeeping missions that are assigned by NATO (North Atlantic Treaty Organization) and the United Nations. While performing these roles, the importance of air mobility and the importance of reliability became widely appreciated. Moreover, the coming retiring age of the existing C-130s in the TUAF forced the TUAF to look for ways to improve its …
Requirements-Based Methodology For Determining Age Inventory Levels, James A. Mackenna
Requirements-Based Methodology For Determining Age Inventory Levels, James A. Mackenna
Theses and Dissertations
The purpose of this research was to illuminate crucial areas in analyzing AGE needs on an operational flightllne and assist in determination of AGE inventory levels. Further refinements could result in more objective and accurate assessments of actual flightline AGE needs and associated risks involved with reduction of AGE inventory levels. The research in this thesis consists of a discrete event simulation to determine desired AGE inventory level through an analysis of aircraft launches and wait time for AGE support by varying AGE (mean time between failure) MTBF and AGE inventory. Stochastic inputs for aircraft failures, AGE delivery times, and …
Estimating C-17 Operating And Support Costs: Development Of A System Dynamics Model, Christopher D. Purvis
Estimating C-17 Operating And Support Costs: Development Of A System Dynamics Model, Christopher D. Purvis
Theses and Dissertations
This research provides justification for experimenting with system dynamics (SD) for performing Operation and Support Cost estimates. For the C-17 Globemaster III cargo aircraft, these costs could exceed $64 billion dollars. Also, many of our weapon systems are beginning to reach the end of their effective life span, and discussions about the impact of aging, on aircraft, has become a hot topic in the literature. System Dynamics is a modeling methodology developed in 1958, but never used extensively for cost estimating. SD offers unique capabilities to the cost estimator, including the ability to model causal relationships. This capability offers the …
Integration Of The Distribution And Repair In Variable Environments (Drive) Model Into Micap Policy, Bradley E. Anderson
Integration Of The Distribution And Repair In Variable Environments (Drive) Model Into Micap Policy, Bradley E. Anderson
Theses and Dissertations
The United States Air Force has implemented the Distribution and Repair In Variable Environments (DRIVE) Model to a limited degree for a limited range of items, and policy makers seem unsure as to the proper level of DRIVE utilization. New asset release sequences and policies have been proposed without evidence to support those decisions. The purpose of this study is to explore different levels of DRIVE implementation relating to proposed asset release policies in order to provide some evidence on which policy could best support Air Force weapon systems. A second purpose of this study is to show how the …
Modeling Diminishing Marginal Returns: An Application To The Aircraft Availability Model, Wayne L. Zorn
Modeling Diminishing Marginal Returns: An Application To The Aircraft Availability Model, Wayne L. Zorn
Theses and Dissertations
The Aircraft Availability Model (AAM) provides the Air Force with a worldwide peacetime requirement for reparable spare parts. This research models AAM methodology as it relates to the concept of diminishing marginal returns in resource application. Three separate modeling techniques are investigated with the goal of reformulating the AAM as a mathematical programming model that provides a comparable solution and a capable tool for the conduct of sensitivity analysis. The general formulations presented here are continuous non-linear, continuous linear, and piecewise linear discrete/continuous models. Two formulations of the piecewise linear discrete/continuous model are presented. The piecewise linear model based on …