Download or read book A Model for Estimating Depot Maintenance Costs for Air Force Fighter and Attack Aircraft written by Michael P. Waker and published by . This book was released on 1987 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: The model developed in this study has two cost estimating relationships (CERs) for estimating depot maintenance costs in its two categories: depot maintenance cost per Promary Authorized Aircraft (PAA); and, depot maintenance cost per flying hour. The data source used for depot maintenance costs is the Weapon Systems Cost Retrieval System (WSCRS) as developed by HQ AFLC. The CERs developed used empty weight of fighter and attack aircraft to predict the cost of depot maintenance per PAA. For depot maintenance cost per flying hour, the variables used were combat radius, thrust-to-weight ratio, and empty weight. The study found that the F-111 was a significant outlier with respect to the data set, but even when included in the data base the F-111 enhanced the values of the statistics for the model and improved the ability of the model to predict. The relationship found for depot maintenance cost per PAA in the CER developed, was not as strong a predictor as was the CER developed for depot maintenance cost per flying hour. This conclusion agrees with previous studies that have tried to determine significant relationships between depot maintenance costs and those costs attributed to the number of PAA. (Theses).
Download or read book A Model for Estimating Depot Maintenance Costs for Air Force Fighter and Attack Aircraft written by Michael P. Waker (CIVILIAN.) and published by . This book was released on 1987 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Estimating Aircraft Depot Maintenance Costs written by Kenneth E. Marks and published by RAND Corporation. This book was released on 1981-01-01 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes a series of parametric equations for use in estimating the depot maintenance cost of new Air Force aircraft, particularly for the five major maintenance categories: airframe rework, engine overhaul, airframe component repair, engine component and accessory repair, and avionics component repair. The equations are intended to provide cost estimates for Defense Systems Acquisition Review Council Milestone II, at which point some design details of major aircraft subsystems (airframe, engine, avionics) are available. The report presents a single set of equations that are the most representative and applicable to the widest range of estimating situations, but presents alternative equations and supporting data and analyses for use by the interested reader.
Download or read book Valuing Programmed Depot Maintenance Speed written by Edward Geoffrey Keating and published by Rand Corporation. This book was released on 2006 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: Part of a larger RAND Project Air Force study on capability-based programming, this report introduces a revealed preference methodology to estimate the value to the United States Air Force of expediting F-15 fighter jet programmed depot maintenance (PDM). Such a valuation estimate would be useful in depot-level cost-benefit analysis. The authors rely on the fact that the Air Force has chosen to pay for intermittent PDM on F-15s to assert that F-15s must have enough value after PDM visits to justify PDM costs. Air Force expenditure data suggest that a typical fiscal year 2005 PDM visit cost about $3.2 million. Using the aircraft valuation curves consistent with PDM being worthwhile, the authors find that expediting an F-15's last PDM visit by a month must be worth at least $60,000. However, using a plausible annual aircraft valuation decline rate, they find that expediting an old F-15's last PDM visit by a month would be worth around $75,000, while expediting a new F-15's first PDM visit by a month would be worth more than $180,000. This report also explores various robustness enhancements. Consideration of aging aircraft issues, for instance, tends to increase the estimated value of expedited PDM.
Download or read book Generalized Depot Maintenance Cost Estimating Relationships for Bomber and Fighter Aircraft written by Gene Harvey Fisher and published by . This book was released on 1962 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Appraisal of Models Used in Life Cycle Cost Estimation for USAF Aircraft Systems written by Kenneth E. Marks and published by . This book was released on 1978 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although life cycle analysis is widely used as a management tool, considerable uncertainty still exists about its effectiveness with respect to economic tradeoffs, funding decisions, and resource allocations. This report evaluates some of the most widely used life cycle cost models: AFR l73-10 models (BACE and CACE); the Logistics Support Cost model; the Logistics Composite model; the MOD-METRIC model; AFM 26-3 Manpower Standards; Air Force Logistics Command Depot Maintenance Cost Equations; the DAPCA model; and the PRICE model. The models are rated within a framework incorporating a set of cycle cost elements and a set of cost driving factors. Color-coded illustrations summarize the results. The models are shown to have many shortcomings that limit their usefulness for life cycle analyses in which estimates of absolute, incremental cost are required. Specific areas are identified where driving factor/cost element combinations are not adequately addressed.
Download or read book An Estimation of USAF Aircraft Operating and Support Cost Relations written by Gregory G. Hildebrandt and published by . This book was released on 1990 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: To understand the availability of data to identify operating and support (O & S) costs, this Note develops aggregative cost estimating relationships to explain O & S costs. A database called VAMOSC is used in conjunction with other information on aircraft characteristics to relate O & S costs per aircraft to flying hours per aircraft, flyaway cost, number of aircraft, and design age. At the total O & S cost level, flyaway cost is an acceptable proxy for aircraft type and the mission design series year of initial operational capability. These cost estimating relationships give impressive explanatory results; whether they have equal predictive power remains to be seen. They may be helpful for assessing Air Force trade-offs between modernization and operating tempo and eventually for understanding the cost of achieving alternative readiness levels.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1988 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Air Force privatizationinplace analysis of aircraft and missile guidance system depot repair costs report to congressional requesters written by and published by DIANE Publishing. This book was released on with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Introduction to the USAF Total Force Cost Model written by H. G. Massey and published by . This book was released on 1977 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: Designed to produce time-phased total manpower and dollar requirements estimates for 15-year projections of alternative future USAF forces and support structures, the USAF Total Force Cost Model--sometimes referred to as the FORCE model--is currently operating on computers in the Air Staff Cost and Economic Analysis Division, Directorate of Management Analysis, Comptroller of the Air Force. This report presents an overview of the model, including its basic purposes and its relationship to the planning and programming process. Some examples and suggested applications are presented. Only the general features of the model and the methodology it employs are discussed. The FORCE model has potential for application in analysis of future forces for research and development planning; studies of alternative weapon systems for mission-oriented subsets of the force; and analysis of alternative future basing plans, training structure, or other support issues. (Author).
Download or read book Programmed Depot Maintenance Capacity Assessment Tool written by Elvira N. Loredo and published by Rand Corporation. This book was released on 2007 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph describes a model for evaluating the combined capacity of organic (U.S. Air Force owned and operated) and contractor maintenance assets to meet aircraft programmed depot maintenance (PDM) workloads. The PDM Capacity Assessment Tool (PDMCAT) forecasts the average number of aircraft that will be in PDM status each year over several decades, based on the initial number of aircraft in PDM status, the physical capacity of the facility or facilities (number of docks available for conducting PDM work), the PDM induction policy (the period allowed between the completion of one PDM and the start of the next), and the minimum hands-on flow time (the minimum time it would take a facility to complete a PDM if only one aircraft were in PDM status). While not directly part of the model, the derived induction data can be used to estimate both near- and long-term obligation authority requirements for different induction policies, labor rates, and workload forecasts. To illustrate the model's operations and capabilities, we applied the model to evaluate the U.S. Air Force's current capacity for supporting KC-135 PDM and examined several options for improving both near- and long-term availability. In the process, we discovered that, while future annual fleet costs increase and availability decreases with age and workload, they do so rather less rapidly because the aircraft induction rates (the number of aircraft inducted each year) decrease as the PDM flow time increases. This leads to a less-drastic cost and availability forecast than usual.
Download or read book A New Approach to Modeling the Cost of Ownership for Aircraft Systems written by Kenneth E. Marks and published by . This book was released on 1981-01-01 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt: Illustrates estimation of support investment costs and recurring operations and support costs through a Model for estimating Aircraft Cost of Ownership (MACO), which also provides a framework for future research. MACO is an outgrowth of an earlier evaluation of the strengths and weaknesses of the most widely used aircraft life cycle cost models. It combines new algorithms for major, maintenance-related costs with formulas drawn from existing models for other cost elements. MACO relates a full set of ownership cost elements to component level reliability and maintainability characteristics and to aircraft design, operations, logistics, and deployment parameters, although the MACO equations would have to be reorganized before they could be used to estimate costs according to the cost structure of the latest Cost Analysis Improvement Group guide. MACO computes resource quantities in units that can be related directly to Air Force programming categories, including base maintenance manning (by work center), depot manning, and recoverable spares inventory levels. Output and input parameters accommodate annual changes in system parameters and operating conditions such as component reliability and aircraft inventory size and activity rates.
Download or read book A Practicality Study of Air Force Depot Maintenance Cost Allocation written by Bruce M. Kalish and published by . This book was released on 1987 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this study was to test the practicality of the present method of allocating depot maintenance costs based on the number of flying hours (FH) and primary authorized aircraft (PAA). The study addressed two basic research questions: 1) Is it reasonable to assume that flying hours and primary authorized aircraft are appropriate variables to use for development of Air Force depot maintenance cost factors?; and 2) Can percentage allocations presently used for FH and PAA be validated through using a.) regression analysis on fighter and cargo aircraft data, b.) using goal programming as an alternate modeling technique to cross check the regression analysis, and c.) a linear programming formulation as an additional cross check? The study found that throughout all three statistical approaches, FH is the sole significant variable and PAA is relatively insignificant in explaining cost. Furthermore, results show allocation percentages should be 100% to the variable FH.
Download or read book Defense Logistics written by United States. General Accounting Office and published by . This book was released on 2000 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Air Force Privatization in place written by United States. General Accounting Office and published by . This book was released on 1997 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Unit Cost Analysis written by John Frederic Schank and published by RAND Corporation. This book was released on 1986 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents a consistent and complete methodology for comparing annual operating and support costs of active and reserve units within and across all components of the force. Existing service models and data were modified or manipulated to create active and reserve annual cost models and cost factors. The report describes the general approach and uses service-specific case studies to demonstrate methods and cost factor derivations. Case studies include: Air Force F-4D and C-130E squadrons; Army mechanized infantry, tank, field artillery, and combat engineering battalions; and Navy F-4S squadrons and FF1052 frigates. Results, given in FY 1983 dollars, show wide variances in annual active and reserve unit costs across units and services, emphasizing the need for a case-by-case approach to unit costing. Technical appendixes present the detailed descriptions of cost factor derivations and data sources. A companion document, R-3210/1-RA, provides a summary of this report in executive briefing format.
Download or read book A Study of the Air Force Depot Maintenance Cost Allocation for Cost Factor Development written by Patricia M. Larson and published by . This book was released on 1986 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis attempts to determine the proportion of depost maintenance costs for cargo aircraft that is flying hour related and the proportion that is inventory related. Currently arbitrary proportions, such as 65 percent to flying hours and 35 percent to inventory, are used. Air Force Directorate of Cost (AF/ACC) uses these allocated costs to prepare life cycle cost and budget year factors for Air Force Regulation (AFR) 173-13, USAF Cost and Planning Factors. Budget factors are used annually in the budget development cycle and directly affect aircraft operating budgets. Life cycle cost factors provide aircraft average yearly operating costs over the lifespan of each aircraft and are used extensively in decision making studies. The analysis is accomplished using ordinary least-squares regression and ridge regression analyses on nine years of actual depot maintenance costs from the Air Force Logistics Command Weapon Systems Cost Retrieval System (WSCRS) for cargo aircraft.
