NASA Technical Reports Server (NASA) · 1974 · 143 citations · 0 references
EngineeringAerospace EngineeringMathematicsAerodynamicsDesign OptimizationOptimizationAerodynamic DesignAirfoil TheoryComputational AerodynamicsOptimization-based DesignShape OptimizationTransonic AerodynamicsAerodynamic Shape OptimizationAirfoil AerodynamicsAirfoil DesignAirfoil Shape OptimizationLow-drag AirfoilsSmall Disturbance EquationsTransonic AirfoilsTransonic Small-disturbance Theory
A practical procedure for optimum design of aerodynamic shapes is demonstrated. The proposed procedure uses an optimization program based on the method of feasible directions coupled with an analysis program that uses a relaxation solution of the inviscid, transonic, small-disturbance equations. Results are presented for low-drag, nonlifting transonic airfoils. Extension of the method to lifting airfoils, other speed regimes, and to three dimensions if feasible.