TY - GEN
T1 - Experimental measurement of unsteady lift and pitching moments for MiTEs on a S903 airfoil
AU - Palacios, Jose
AU - Overmeyer, Austin
AU - Smith, Edward
AU - Maughmer, Mark
AU - Kinzel, Michael
AU - Szefi, Joseph
PY - 2011
Y1 - 2011
N2 - Lift and pitching moment wind-tunnel data was obtained for Miniature-Trailing Edge Effectors (MiTEs). Unsteady data was acquired, non-dimensionalized, and compared to numerical predictions. A 0.02c height MiTE located at 0.9c was employed, which provided the same lift enhancement as a 0.17c trailing edge flap deflected 8 degrees. Aerodynamic loads of both types of flaps at a reduced frequency of 0.21 and a Reynolds number of 1.0 ×106 were recorded. The results were interpreted using previously verified computational fluid dynamics. Experimental results captured the unsteady aerodynamics loads due to strong vortex shedding that occur downstream of the deploying MiTEs. This phenomenon was never measured during prior dynamic testing, and validates computational fluid dynamics predictions.
AB - Lift and pitching moment wind-tunnel data was obtained for Miniature-Trailing Edge Effectors (MiTEs). Unsteady data was acquired, non-dimensionalized, and compared to numerical predictions. A 0.02c height MiTE located at 0.9c was employed, which provided the same lift enhancement as a 0.17c trailing edge flap deflected 8 degrees. Aerodynamic loads of both types of flaps at a reduced frequency of 0.21 and a Reynolds number of 1.0 ×106 were recorded. The results were interpreted using previously verified computational fluid dynamics. Experimental results captured the unsteady aerodynamics loads due to strong vortex shedding that occur downstream of the deploying MiTEs. This phenomenon was never measured during prior dynamic testing, and validates computational fluid dynamics predictions.
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M3 - Conference contribution
AN - SCOPUS:79960688137
SN - 9781617828812
T3 - Annual Forum Proceedings - AHS International
SP - 2949
EP - 2961
BT - 67th American Helicopter Society International Annual Forum 2011
T2 - 67th American Helicopter Society International Annual Forum 2011
Y2 - 3 May 2011 through 5 May 2011
ER -