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Operations and Supply Chain Management Commons™

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Physical Sciences and Mathematics

Air Force Institute of Technology

Articles 1 - 8 of 8

Full-Text Articles in Operations and Supply Chain Management

Transportation Service Level Impact On Aircraft Availability, Vincent Mclean, Adam D. Reiman Jun 2022

Transportation Service Level Impact On Aircraft Availability, Vincent Mclean, Adam D. Reiman

Faculty Publications

Purpose — Aircraft fail to meet mission capable rate goals due to a lack of supply of aircraft parts in inventory where the aircraft breaks. This triggers an order at the repair location. To maximize mission capable rate, the time from order to delivery needs to be minimized. The purpose of this research is to examine the case of three airfields for the order to delivery time of mission critical aircraft parts for a specific aircraft type. Design/methodology/approach — This research captured data from three information systems to assess the order fulfillment process. The data were analyzed to determine the …

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An Analysis Of The Impact Of Variation In Mean Time Between Demand On Air Force Fleet Level Aircraft Parts Inventories, Andrew J. Berger, Caleb S. Murphy Jun 2014

An Analysis Of The Impact Of Variation In Mean Time Between Demand On Air Force Fleet Level Aircraft Parts Inventories, Andrew J. Berger, Caleb S. Murphy

Theses and Dissertations

This thesis researched the accuracy of demand forecasting and impact of demand variation on requirements definition for Air Force aircraft secondary items. Specifically, this thesis sought to answer three questions: How does the Air Force calculate item requirements? , How accurate is the current system at predicting future item requirements? , and How do variations in predicted demand change item requirements? The literature review described the Air Force supply system for aircraft secondary items. Analysis into current demand forecast accuracy found that the level of error between actual and predicted historic demand was as high as 92% for the items …

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The Application Of A Readiness-Based Sparing Model To Foreign Military Sales, Karen M. Klinger Jun 1994

The Application Of A Readiness-Based Sparing Model To Foreign Military Sales, Karen M. Klinger

Theses and Dissertations

Current Foreign Military Sales FMS models provide stock levels that result in a very low system availability or a funding requirement that exceeds the overall budget. The purpose of this research was to determine if an inventory model exists that can be used in FMS reparable sparing to provide a more efficient and economical inventory purchase. The Aircraft Sustainability Model ASM is such a model, providing the most aircraft availability possible from a given inventory investment by computing the optimal number of spare parts to buy for each item. FMS data was obtained from two sources - the International Data …

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An Analysis Of The Root Causes Of Delays And Deficiencies In The Development Of Embedded Software For Air Force Weapon Systems, Jay R. Hopkins, Curtis De Keyrel Dec 1993

An Analysis Of The Root Causes Of Delays And Deficiencies In The Development Of Embedded Software For Air Force Weapon Systems, Jay R. Hopkins, Curtis De Keyrel

Theses and Dissertations

The importance of embedded software, used in every subsystem of ah major weapon systems used by the United States Air Force, has increased drastically over the last decades. However, in spite of the regulations currently in existence, developing and acquiring software which meets the user requirements within the original cost and schedule estimates continues to be difficult. At the same time, the Air Force has pushed to improve the development process with the Total Quality Management TQM program. The primary method used to improve the process has been to create metrics, collect data on these metrics, and then perform a …

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Computerized Vehicle Routing Programs And Their Effect On Vehicle Utilization In The Air Force, Rex E. Adee, William G. Howard Sep 1993

Computerized Vehicle Routing Programs And Their Effect On Vehicle Utilization In The Air Force, Rex E. Adee, William G. Howard

Theses and Dissertations

The purpose of this study is to determine if a commercial computerized vehicle routing program improves vehicle utilization for an Air Force base transportation organization. First, the researchers investigate current routing procedures of Air Force base transportation organizations. Second, researchers identify a commercial computerized vehicle routing program that enables the authors to conduct a comparison of vehicle utilization rates between an Air Force base transportation organization and commercial computerized vehicle routing programs. The study reveals that implementing a computerized vehicle routing program in place of a manual routing procedure does not improve vehicle utilization. However, the study reveals some limitations …

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The Application Of Function Points To Predict Source Lines Of Code For Software Development, Garland S. Henderson Sep 1992

The Application Of Function Points To Predict Source Lines Of Code For Software Development, Garland S. Henderson

Theses and Dissertations

This research investigated the results of using function point analysis-based estimates to predict source lines of code (SLOC) for software development projects. The majority of software cost and effort estimating parametric tools are categorized as SLOC-based, meaning SLOC is the primary input. Early in a program, an accurate estimate of SLOC is difficult to project. Function points, another parametric software estimating tool, bases software cost and effort estimates on the functionality of a system. This functionality is described by documents available early in a program. Using a modeling methodology, the research focuses on function point's ability to accurately estimate SLOC …

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Award Fee In Software Acquisition, Mark T. Hunter Sep 1992

Award Fee In Software Acquisition, Mark T. Hunter

Theses and Dissertations

The focus of this research effort was to determine, in general terms, what contractual tools are available to influence contractor performance during the software development process and, specifically, whether or not award fee contracts are appropriate tools. First, a qualitative, in depth literature review was done. Next, personal interviews were conducted with Program Directors and Deputy Program Directors at Aeronautical Systems Center, Electronic Systems Center, and Space and Missiles Systems Center. Then, after the results were summarized, the data was analyzed and findings were made. Findings include: award fee was found to be the most flexible provision in the FAR …

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Investigative Search Of Quality Historical Software Support Cost Data And Software Support Cost-Related Data, Brent L. Barber Dec 1991

Investigative Search Of Quality Historical Software Support Cost Data And Software Support Cost-Related Data, Brent L. Barber

Theses and Dissertations

The purpose of the study was to determine what software support cost data and software support cost-related data should and can be collected by the Air Force. In addition, the study was to determine how the subject data should be collected. The collection of this data is necessary in order to measure the accuracy and calibration requirements of the software support cost models used by the Air Force. The study found there was no standard set of data items, and no standard procedures in place for the collection of this data. In most cases data were available or easily accessible, …

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