Development of Advanced Circulation Control Wing High Lift Airfoils
Interim rept. Oct 82-Jul 83,
DAVID W TAYLOR NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER BETHESDA MD AVIATION AND SURFACE EFFECTS DEPT
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Recent experimental and flight test programs have developed and confirmed the high lift capability of the Circulation Control Wing CCW concept. These CCW airfoils employ tangential blowing of engine bleed air over circular or near circular trailing edges, and are capable of usable lift coefficients triple those of simple mechanical flaps. Earlier versions of these blown airfoils made use of relatively complex leading and trailing edge devices which would have to be retracted mechanically for cruise flight. In a continuing program to reduce the complexity, size and weight of the CCW system, several series of advanced CCW airfoils have been developed which can provide STOL capability for both military and commercial aircraft using much smaller, less complex high lift systems. This paper describes these configurations and presents the experimental results confirming their aerodynamic characteristics. Comparisons to previous CCW and more conventional high lift systems are provided.
- Attack and Fighter Aircraft
- Fluid Mechanics