DTIC ADA047667: Development of Cost Estimating Relationships pdf

DTIC ADA047667: Development of Cost Estimating Relationships

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Cost estimation is a wide open area within the Department of Defense and accurate cost estimating models are a valuable tool in the life cycle costing of a weapon system. This research effort utilized multiple linear regression analysis to develop parametric cost models or cost estimating relationships (CERs) for jet engine depot overhaul costs. Both engine operating parameters, e.g., turbine inlet temperature, RPM, etc., and engine physical characteristics, e.g., length, weight etc., were considered as probable cost drivers. Extensive analysis was performed to determine the reliability of the data base. The major finding of this study was that models can be developed with acceptable explanatory power, with respect to variation in the data base, using data of questionable reliability. Thus, a model developed should not be accepted on the basis of explanatory power alone but should be tested further to determine its utility as a cost estimator.

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• Creator/s: Defense Technical Information Center
• Date: 9/1/1977
• Year: 1977
• Book Topics/Themes: DTIC Archive, Breglio, Robert A, Jr, AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OHIO SCHOOL OF SYSTEMS AND LOGISTICS, *AIRCRAFT MAINTENANCE, *COST ESTIMATES, *JET ENGINES, *LIFE CYCLE COSTS, MAINTENANCE, MATHEMATICAL MODELS, TURBOFAN ENGINES, AIRCRAFT ENGINES, PARAMETERS, THESES, REGRESSION ANALYSIS, COSTS, OPERATION, TURBOJET ENGINES

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