Combat Optimization and Analysis - COAP Volume IV. Parameter Optimization Subprogram Manual.
Final rept. Sep 69-Dec 70,
AEROPHYSICS RESEARCH CORP BELLEVUE WASH
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COAP is a program for the simulation and optimization of combative and cooperative two-vehicle flight paths. It includes single vehicle flight path problem capability as a subcase. Considerable emphasis is placed on the use of modern optimization. The program has the ability to perform trajectory optimization by the variational steepest-descent method including search for optimal initial conditions search for optimal arc stage lengths constraints defined at terminal point, intermediate corners stage points, or along the path and optimum parameter design variable values. The program can solve two system vehicle problems with or without reacting feedback from the second system vehicle. Alternatively, the program may be used to apply the direct multivariable search approach to trajectory optimization. Point mass equations of motion for a two-vehicle system are incorporated in the COAP program. Motion takes place about a rotating oblate planet having up to four harmonics in its gravitational field, non-uniform atmosphere and winds. Combative logic is defined in terms of vehicle relative states. The logic defines feedback control on the basis of relative state. The COAP program may utilize variational optimization procedures to determine optimal open loop control against a reacting opponent employing feedback control defined by combat logic. Author
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