Aircraft Airframe Cost Estimating Relationships Fighters
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Aircraft Airframe Cost Estimating Relationships
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Author : Ronald Wayne Hess
language : en
Publisher:
Release Date : 1987
Aircraft Airframe Cost Estimating Relationships written by Ronald Wayne Hess and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Airframes categories.
"This Note is part of a series that derives 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."--Rand abstracts
Aircraft Airframe Cost Estimating Relationships Fighters
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Author : Ronald Wayne Hess
language : en
Publisher:
Release Date : 1987
Aircraft Airframe Cost Estimating Relationships Fighters written by Ronald Wayne Hess and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Airframes categories.
Aircraft Airframe Cost Estimating Relationships
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Author : Ronald Wayne Hess
language : en
Publisher:
Release Date : 1987
Aircraft Airframe Cost Estimating Relationships written by Ronald Wayne Hess and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Airframes categories.
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).
Aircraft Airframe Cost Estimating Relationships
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Author : Ronald Wayne Hess
language : en
Publisher:
Release Date : 1987
Aircraft Airframe Cost Estimating Relationships written by Ronald Wayne Hess and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Airframes categories.
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.
Airframe Rdt E Cost Estimating A Justification For And Development Of Unique Cost Estimating Relationships According To Aircraft Type
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Author : Charles L Beck (Jr)
language : en
Publisher:
Release Date : 1982
Airframe Rdt E Cost Estimating A Justification For And Development Of Unique Cost Estimating Relationships According To Aircraft Type written by Charles L Beck (Jr) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with categories.
Airframe RDT & E costs are invariably predicted by utilizing one general cost estimating relationship (CER) regardless of aircraft type(fighter, attack, or bomber/cargo). This practice results in inconsistent and often very significant inaccuracies in predicting weapon system development costs which may affect subsequent program funding. This thesis examines the utility of a unique CER for each aircraft type to be used for estimating airframe development costs. The methodology consisted of factor analysis and step-wise multiple regression analysis. Based on the results, the authors concluded that the unique CERs are consistently and significantly more accurate when estimating airframe RDT & E costs than the general CERs developed by former studies. The results of this study should be applicable to those organizations dealing with the procurement of aircraft airframes. (Author).
Aircraft Airframe Cost Estimating Relationships
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Author : Ronald Wayne Hess
language : en
Publisher:
Release Date : 1987
Aircraft Airframe Cost Estimating Relationships written by Ronald Wayne Hess and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Airframes categories.
"This Note is part of a series that derives 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 all mission types, the equation set uses empty weight and speed as the basic size-performance variable combination."--Rand abstracts.
Aircraft Airframe Cost Estimating Relationships
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Author : Ronald Wayne Hess
language : en
Publisher:
Release Date : 1987
Aircraft Airframe Cost Estimating Relationships written by Ronald Wayne Hess and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Airframes categories.
Aircraft Airframe Cost Estimating Relationships Attacks Aircraft
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Author : R. W. Hess
language : en
Publisher:
Release Date : 1987
Aircraft Airframe Cost Estimating Relationships Attacks Aircraft written by R. W. Hess and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with categories.
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 attack aircraft, no single acceptable estimating relationship could be identified because sample sizes were small and not homogeneous. Estimates for these aircraft should be developed by analogy or by using the equation set developed for all mission types. Keywords: Airframes, Cost estimates, Procurement, Military aircraft, Attack aircraft, Equations. (SDW).
Rand Report
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Author : Rand Corporation
language : en
Publisher:
Release Date : 1987
Rand Report written by Rand Corporation and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Research categories.
Military Airframe Acquisition Costs The Effects Of Lean Manufacturing
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Author :
language : en
Publisher:
Release Date : 2001
Military Airframe Acquisition Costs The Effects Of Lean Manufacturing written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with categories.
This report is part of a project responding to a call by the U.S. Air Force to update cost estimating methodologies for new weapons systems-in particular, fighter aircraft. The Air Force was concerned that Cost Estimating Relationships (CERs) based on older aircraft did not adequately reflect the acquisition and manufacturing environment within which a new fighter, such as the Joint Strike Fighter (JSF) would be produced. This report is one of a series, all of which address some aspect of how to incorporate the new DoD acquisition and manufacturing environments into historical cost estimating relationships or methodologies (See Younossi, Graser, and Kennedy, 2001; Lorell and Graser, 2001). Using the CER methodology for example, the cost of a future aircraft is estimated as a function of its physical or characteristics or other program variables, using a series of equations wherein the performance and program variables are inputs, and cost or labor hours are the outputs. To create these equations, actual costs (or labor hours) to produce previous aircraft are collected and used as the dependent variables in statistical regression analysis. Explanatory variables typically include such factors as cumulative production quantity, annual production rate, such aircraft characteristics as weight and speed, and others. The resulting equations are referred to as "cost estimating relationships," or CERs. Obviously, the ability of these equations to forecast future systems costs hinges on how well past performance is a predictor of the future.