Alleviation of Airfoil Dynamic Stall Moments via Trailing-Edge-Flap Flow Control
作者： Daniel Feszty , Eric A. Gillies , Marco Vezza
DOI: 10.2514/1.853
关键词:
摘要: Trailing-edge-flap flow control for the mitigation of large negative pitching moments and aerodynamic damping caused by helicopter rotor blade dynamic stall was studied means computational fluid dynamics. A discrete vortex method used simulations. The model geometry a NACA 0012 airfoil oscillating in an α(t) = 15 deg + 10 sin(ωt) motion at reduced frequency k 0.173. freestream conditions were M 0.117 Re 1.463296 x 6 . flap actuation brief pulse signal sinusoidal shape
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Peter F. Lorber, Franklin O. Carta, Raymond G. Carlson, The Aerodynamics of an Oscillating Jet Flap Journal of The American Helicopter Society. ,vol. 34, pp. 24- 32 ,(1989) , 10.4050/JAHS.34.24
M. ROBINSON, H. HELIN, M. LUTTGES, Control of Wake Structure Behind and Oscillating Airfoil 13th Atmospheric Flight Mechanics Conference. ,(1986) , 10.2514/6.1986-2282
Alexandre Joel Chorin, Numerical study of slightly viscous flow Journal of Fluid Mechanics. ,vol. 57, pp. 785- 796 ,(1973) , 10.1017/S0022112073002016
L.L van Dommelen, S.F Shen, The spontaneous generation of the singularity in a separating laminar boundary layer Journal of Computational Physics. ,vol. 38, pp. 125- 140 ,(1980) , 10.1016/0021-9991(80)90049-2
J. Panda, K. B. M. Q. Zaman, Experimental investigation of the flow field of an oscillating airfoil and estimation of lift from wake surveys Journal of Fluid Mechanics. ,vol. 265, pp. 65- 95 ,(1994) , 10.1017/S0022112094000765
Hequan Lin, Marco Vezza, R. A. McD. Galbraith, Discrete Vortex Method for Simulating Unsteady Flow AIAA Journal. ,vol. 35, pp. 494- 499 ,(1997) , 10.2514/2.122
Yung H. Yu, Soogab Lee, Kenneth W. McAlister, Chee Tung, Clin M. Wang, Dynamic stall control for advanced rotorcraft application AIAA Journal. ,vol. 33, pp. 289- 295 ,(1995) , 10.2514/3.12496
Mukund Acharya, Metwally H. Metwally, Unsteady pressure field and vorticity production over a pitching airfoil AIAA Journal. ,vol. 30, pp. 403- 411 ,(1992) , 10.2514/3.10931
D. Greenblatt, B. Nishri, A. Darabi, I. Wygnanski, Dynamic Stall Control by Periodic Excitation, Part 2: Mechanisms Journal of Aircraft. ,vol. 38, pp. 439- 447 ,(2001) , 10.2514/2.2811
C. Shih, L. Lourenco, L. Van Dommelen, A. Krothapalli, Unsteady flow past an airfoil pitching at a constant rate AIAA Journal. ,vol. 30, pp. 1153- 1161 ,(1992) , 10.2514/3.11045