Validation of a Transonic Maneuver/Cruise Airfoil Design Employing Active Diffusion Control.

摘要

The use of advanced active diffusion control has resulted in cruise and maneuvering transonic airfoil design points which are similar enough to permit deployment from a common section while still achieving outstanding performance at both flight conditions. An airfoil thickness ratio of seven percent was selected, relating to high performance aircraft/missile applications. The antiseparation tailored contour (ATC) is the basic blowing/contouring device for active diffusion control. A design phase produced transonic ATC cruise and maneuvering airfoil geometries designated as TATC7C and TATC7M, respectively. Corresponding predictions of significant performance improvements motivated entry into model fabrication and wind tunnel testing tasks. The high Mach number design point performance of a variable geometry transonic section employing active diffusion control indicates the potential for unique performance and efficiency advantages in advanced airfoil design.