Prediction of Drag Coefficients of a Supersonic V/STOL Configuration with Various Store Arrangements.

摘要

Numerical computations, using supersonic area rule, linear theory and turbulent boundary layer solutions, were performed to evaluate the drag coefficients of a supersonic V/STOL configuration with various store arrangements. External stores included short- and medium-range missiles, electronic pod, and 600-gallon (2280-liters) fuel tanks. Predictions were based on cruise conditions at Mach numbers 1.2, 1.6, and 1.8 with Reynolds numbers between 2 and 66.2 million per foot. As expected, it was found that the drag coefficient decreases as the free-stream Mach number increases. The wave drag varies nonlinearly with added store capacity. Data indicate that for the same store capacity, the wave drag may be minimized by judicious selection of store location. (Author)