Characteristics of deformable leading edge for high performance helicopter rotorThe deformable leading edge (DLE) concept to improve the blade capability in lift, drag and pitching moments has been investigated for the purpose of meeting new rotor maneuverability and susceptibility requirements. The advantages and disadvantages of this concept have been carefully examined with limited computational and experimental results. This work showed that this concept achieves a substantial improvement in lift capability and also reduces the drag and pitching moment at the same time. Effects of various parameters, such as Reynolds number, reduced frequency, mean angle of oscillation, and airfoil shape, on the performance of these airfoils were also investigated.
Document ID
19930063288
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Lee, Soogab (NASA Ames Research Center Moffett Field, CA, United States)
Mcalister, K. W. (NASA Ames Research Center Moffett Field, CA, United States)
Tung, Chee (U.S. Army, Aeroflightdynamics Directorate; NASA, Ames Research Center Moffett Field, CA, United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1993
Publication Information
Publication: In: AIAA Applied Aerodynamics Conference, 11th, Monterey, CA, Aug. 9-11, 1993, Technical Papers. Pt. 2 (A93-47201 19-02)
Publisher: American Institute of Aeronautics and Astronautics