Technique for Developing Design Tools from the Analysis Methods of Computational Aerodynamics

An initial attempt at a technique to generate, simply and rapidly, mixed direct-inverse codes from their direct counterparts is presented. A surface alteration procedure, keyed to flow type for the mixed case, is "wrapped around" an existing direct code. The difference between calculated and target pressures determines surface modifications. The direct code is used as a "black box." The technique features retention of the strength of the direct analysis and easy interchangeability of the analysis code. The technique is demonstrated in two cases, a nonlinear supersonic wing code and a transonic airfoil code.