Effect of compressibility on suppression of dynamic stall using a slotted airfoil

被引:18
作者
Carr, LW [1 ]
Chandrasekhara, MS
Wilder, MC
Noonan, KW
机构
[1] NASA, Ames Res Ctr, Aeroflightdynam Directorate, USA Aviat & Missile Command, Moffett Field, CA 94035 USA
[2] USN, Postgrad Sch, NASA, Joint Inst Aeronaut,Dept Aeronaut & Astronaut, Monterey, CA 93943 USA
[3] Eloret, Sunnyvale, CA USA
[4] NASA, Langley Res Ctr, Aeroflightdynam Directorate, USA Aviat & Missile Command, Hampton, VA 23681 USA
来源
JOURNAL OF AIRCRAFT | 2001年 / 38卷 / 02期
关键词
Aerodynamics - Compressibility - Flow of fluids - Helicopter rotors - Interferometry - Materials testing - Oscillations - Pressure distribution;
D O I
10.2514/2.2762
中图分类号
V [航空、航天];
学科分类号
08 ; 0825 ;
摘要
A multielement airfoil designed for helicopter application has been tested for compressible dynamic stall behavior and has been proven to he a robust dynamic stall-free concept. This slotted airfoil has operated into poststall areas without the dynamic stall vortex that is normally present whenever airfoils are tested beyond their static stall boundary. Point diffraction interferogram images of the dynamic flow over the airfoil are presented, showing details of the flow development during the oscillation cycle, and instantaneous pressure distributions on the airfoil and slat during dynamic airfoil motion are included.
引用
收藏
页码:296 / 309
页数:14
相关论文
共 12 条
[1]  
BROCK NJ, 1991, ICIASF 91 RECORD, P423, DOI 10.1109/ICIASF.1991.186266
[2]  
CARR L, 1983, 832533 AIAA
[3]   PROGRESS IN ANALYSIS AND PREDICTION OF DYNAMIC STALL [J].
CARR, LW .
JOURNAL OF AIRCRAFT, 1988, 25 (01) :6-17
[4]   Compressibility effects on dynamic stall [J].
Carr, LW ;
Chandrasekhara, MS .
PROGRESS IN AEROSPACE SCIENCES, 1996, 32 (06) :523-573
[5]   DESIGN AND DEVELOPMENT OF A COMPRESSIBLE DYNAMIC STALL FACILITY [J].
CARR, LW ;
CHANDRASEKHARA, MS .
JOURNAL OF AIRCRAFT, 1992, 29 (03) :314-318
[6]   QUANTITATIVE STUDY OF UNSTEADY COMPRESSIBLE FLOW ON AN OSCILLATING AIRFOIL [J].
CARR, LW ;
CHANDRASEKHARA, MS ;
BROCK, NJ .
JOURNAL OF AIRCRAFT, 1994, 31 (04) :892-898
[7]  
CARR LW, 1992, P INT UN THEOR APPL, P1
[8]  
CHANDRASEKHARA MS, 1997, 972236 AIAA
[9]  
DEHUGHES PP, 1993, TP3407 NASA
[10]  
NOONAN KW, 1994, AM HEL SOC AER SPEC