DAPCA

A Computer Program for Determining Aircraft Development and Production Costs

by H. E. Boren

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Describes DAPCA (Development and Production Costs for Aircraft), a computer program designed to compute development and production costs for airframes, engines, and avionic systems. DAPCA generates cost-quantity unit data and cumulative-average improvement curves. The principal inputs relate mainly to aircraft physical characteristics, such as gross takeoff weight, speed, engine type, number of engines per aircraft, and thrust or shaft horsepower. Various options are also provided to the user when making a run. Data are retained and reused unless specifically deleted or superseded by new data, so that only changes in the inputs need to be entered for succeeding runs. Each computer run takes approximately three to four seconds. A sine-power function is used to generate the sustaining tooling production rate curve. Appendixes are included that give the costing equations used, flowcharts, and a complete listing of the FORTRAN IV source program.

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