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Author: William Joel Ditto
Publisher:
ISBN:
Category :
Languages : en
Pages : 7
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Book Description
This Cost Estimating Relationship (CER) for Fixed Wing Aircraft was developed to estimate the unit cost of a twin engine, commercial, turbo-prop aircraft procured off the shelf. The Army has a limited fixed wing capability and most of this capability is procured in a commercial environment instead of through a typical rotor wing procurement cycle. The list price in the commercial market includes both engines and standard avionics, while in a typical Government rotor wing procurement these items are Government Furnished Equipment. Therefore, this CER was developed using the parameter of empty weight and aircraft commercial list price. The data collected was analyzed using the Statistical Analysis System (SAS) on the AVSCOM Scientific and Engineering Computer System. The program developed is a linear regression of the form (y = a + bx), and the results are shown in the report.
Author: William Joel Ditto
Publisher:
ISBN:
Category :
Languages : en
Pages : 7
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Book Description
This Cost Estimating Relationship (CER) for Fixed Wing Aircraft was developed to estimate the unit cost of a twin engine, commercial, turbo-prop aircraft procured off the shelf. The Army has a limited fixed wing capability and most of this capability is procured in a commercial environment instead of through a typical rotor wing procurement cycle. The list price in the commercial market includes both engines and standard avionics, while in a typical Government rotor wing procurement these items are Government Furnished Equipment. Therefore, this CER was developed using the parameter of empty weight and aircraft commercial list price. The data collected was analyzed using the Statistical Analysis System (SAS) on the AVSCOM Scientific and Engineering Computer System. The program developed is a linear regression of the form (y = a + bx), and the results are shown in the report.
Author: Michael N. Beltramo
Publisher:
ISBN:
Category :
Languages : en
Pages : 20
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Book Description
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: 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: Michael N. Beltramo
Publisher:
ISBN:
Category :
Languages : en
Pages : 20
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Book Description
Author: Luis R. Sanchez
Publisher:
ISBN:
Category :
Languages : en
Pages : 111
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Book Description
Planning Research Corporation, has conducted a series of studies to develop techniques for estimating the cost of fixed-wing aircraft. The primary objective of these studies is to develop techniques suitable for use in program planning, cost-effectiveness studies, and evaluation of contractor proposals. A further objective is to provide insight into problems of cost analysis and to suggest an analytical methodology for developing estimating relationships that will be useful to analysts in the military departments in preparing estimates of cost for new weapons system programs. (Author).
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 : 156
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Book Description
"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.
Author: Gregory G. Hildebrandt
Publisher:
ISBN:
Category : Econometrics
Languages : en
Pages : 88
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Book Description
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.
Author: Ronald Wayne Hess
Publisher:
ISBN:
Category : Airframes
Languages : en
Pages : 160
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Book Description
"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
