Development of pneumatic test techniques for subsonic high-lift and in-ground-effect wind tunnel investigationsWind tunnel evaluations of two-dimensional high-lift airfoils and of vehicles operating in ground effect near the tunnel floor require special test facilities and procedures. These are needed to avoid errors caused by proximity to the walls and interference from the wall boundary layers. Pneumatic test techniques and facilities were developed for GTRI aerodynamic research tunnels and calibrated to verify that these wall effects had been removed. The modified facilities were then employed to evaluate the aerodynamic characteristics of blown very-high-lift airfoils and of racing hydroplanes operating in ground effect at various levels above the floor. The pneumatic facilities, techniques and calibrations are discussed and typical aerodynamic data recorded both with and without the test-section blowing systems are presented.
Document ID
19950012853
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Englar, Robert J. (Georgia Inst. of Tech. Atlanta, GA, United States)
Date Acquired
September 6, 2013
Publication Date
July 1, 1994
Publication Information
Publication: AGARD, Wall Interference, Support Interference and Flow Field Measurements