Cost-Estimating Relationships for Tactical Combat Aircraft PDF Download
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Author: Joseph W. Stahl
Publisher:
ISBN:
Category : Helicopters
Languages : en
Pages : 60
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Book Description
This document presents four separate cost-estimating relationships (CERs): one each for RDT & E and procurement for helicopters and fixed-wing aircraft used in tactical air missions. The CERs are functions of such major characteristics as weight, thrust/weight ratio, speed and year of IOC.
Author: Joseph W. Stahl
Publisher:
ISBN:
Category : Helicopters
Languages : en
Pages : 60
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Book Description
This document presents four separate cost-estimating relationships (CERs): one each for RDT & E and procurement for helicopters and fixed-wing aircraft used in tactical air missions. The CERs are functions of such major characteristics as weight, thrust/weight ratio, speed and year of IOC.
Author: Won P. Hong
Publisher:
ISBN:
Category :
Languages : en
Pages : 60
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Book Description
This thesis presents Cost Estimating Relationships (CERs) for fighter aircraft. Since the fighter aircraft is one of the most important tactical weapon systems, it is very useful to establish CERs solely for fighter aircraft. Using the public data on U.S. fighter aircraft, Ordinary Least Squares (OLS) is used as the primary statistical method of establishing CERs. The data collection techniques and adjustments used are discussed, and simple and multiple linear regressions are performed on various combinations of the explanatory variable. This thesis then shows that CERs based on new fighter aircraft data are more reliable than those based on new and old fighter aircraft data. Keywords: Equations; Statistical regression analysis.
Author: Mark V. Arena
Publisher: Rand Corporation
ISBN: 0833039253
Category : History
Languages : en
Pages : 74
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Book Description
This report is one of a series from a RAND Project AIR FORCE project, "The Cost of Future Military Aircraft: Historical Cost Estimating Relationships and Cost Reduction Initiatives." The purpose of the project is to improve the tools used to estimate the costs of future weapon systems. It focuses on how recent technical, management, and government policy changes affect cost. This report focuses on the accuracy of cost estimates. For our analysis, we used a very specific sample of Selected Acquisition Report (SAR) data, namely only programs that are complete or are nearly so. The analysis indicates a systematic bias toward underestimating the costs and substantial uncertainty in estimating the final cost of a weapon system. In contrast to the previous literature, the cost growth was higher than previously observed. We also found few correlations with cost growth, but observed that programs with longer duration had greater cost growth and electronics programs tended to have lower cost growth. Although there were some differences in the mean cost growth factors among the military departments, the differences were not statistically significant. While newer programs appear to have lower cost growth, this trend appears to be due to factors other than acquisition policies.
Author: Lane Pierrot
Publisher:
ISBN:
Category : Aeronautics, Military
Languages : en
Pages : 124
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Book Description
Author: Gregory G. Hildebrandt
Publisher: Rand Corporation
ISBN: 0833041215
Category : History
Languages : en
Pages : 96
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Book Description
Budget estimating relationships (BERs) for flying depot-level reparables (DLRs) explain the direct effect of specified variables on obligated funds associated with spare parts that directly support the U.S. Air Force (USAF) Flying Hour Program. In FY02, net sales of DLRs to Air Force commands hit historic highs. To provide the Air Force Cost Analysis Improvement Group with a tool to better understand the commands-- budgetary submissions, we develop several explanatory BERs to understand why flying DLRs are at their particular levels. Using longitudinal regression statistical methods, we explain the historical net sales of flying DLRs using estimating models that relate net sales to the contemporaneous values of aircraft characteristics, operational tempo, and time-related variables. This is but one part of a larger project to develop better estimating methods for use by the acquisition community and to examine the impact of Air Force and DoD policies on weapon system costs. The findings will also be of interest to those in the national security community who are involved in analyzing alternative military postures, and to members of the aircraft industry's analytical community.
Author: Ronald Wayne Hess
Publisher:
ISBN:
Category : Airframes
Languages : en
Pages : 118
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Book Description
This report presents generalized equations for estimating the development and production costs of aircraft airframes. It provides separate cost estimating relationships (CERs) for engineering, tooling, manufacturing labor, and quality-control hours; manufacturing material, development support, and flight-test cost; and total program cost. The CERs, expressed in the form of exponential equations, were derived from a database consisting of 34 military aircraft with first flight dates ranging from 1948 to 1978. In addition to the basic objective of developing an updated set of airframe CERs, the study also examined three specific possibilities for improving CER accuracy: (1) stratifying the full estimating sample into subsamples representing major differences in aircraft type; (2) incorporating variables describing program structure and airframe construction characteristics; and (3) for the fighter aircraft only, incorporating an objective technology index into the equations.
Author: Ronald Wayne Hess
Publisher:
ISBN:
Category : Airframes
Languages : en
Pages : 80
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Book Description
This Note is part of a series of Notes that derive a set of equations suitable for estimating the acquisition costs of various types of aircraft airframes in the absence of detailed design and manufacturing information. A single set of equations was selected as being the most representative and applicable to the widest range of estimating situations. For fighters, the equation set uses airframe unit weight as the variable. Keywords: Airframes, Cost estimates, Procurement, Equations, Fighter aircraft, Military aircraft. (SDW).
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author:
Publisher: Rand Corporation
ISBN: 083303863X
Category : History
Languages : en
Pages : 204
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Book Description
This report is one of a series from a RAND Project AIR FORCE project, "The Cost of Future Military Aircraft: Historical Cost Estimating Relationships and Cost Reduction Initiatives."
Author: David E. Stem
Publisher: Rand Corporation
ISBN: 0833038729
Category : Political Science
Languages : en
Pages : 211
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Book Description
Systems engineering and program management (SE/PM) constitute a large portion of the acquisition cost of military aircraft and guided weapons systems. The goal of this study was the development of a set of cost-estimating relationships that can be used to estimate the SE/PM cost element for development and production of aircraft and weapons programs. The authors canvassed government and industry personnel to learn about current techniques for estimating SE/PM costs, and they collected historical data from several aircraft and weapons programs to investigate trends in SE/PM costs over time and to generate methods that cost analysts can use early in the life cycle of a program when little cost information is available. The authors also investigated the effects on SE/PM costs from acquisition reform, including the reduction in the number of military specifications and standards, the use of integrated product and process teams, and the trend toward "evolutionary acquisition." This product is part of the RAND Corporation monograph series. RAND monographs present major research findings that address the challenges facing the public and private sectors. All RAND monographs undergo rigorous peer review to ensure high standards for research quality and objectivity. Book jacket.
