Hybrid upper surface blown flap propulsive-lift concept for the Quiet Short-Haul Research AircraftThe hybrid upper surface blowing concept consists of wing-mounted turbofan engines with a major portion of the fan exhaust directed over the wing upper surface to provide high levels of propulsive lift, but with a portion of the fan airflow directed over selected portions of the airframe to provide boundary layer control. NASA-sponsored preliminary design studies identified the hybrid upper surface blowing concept as the best propulsive lift concept to be applied to the Quiet Short-Haul Research Aircraft (QSRA) that is planned as a flight facility to conduct flight research at low noise levels, high approach lift coefficients, and steep approaches. Data from NASA in-house and NASA-sponsored small and large-scale wind tunnel tests of various configurations using this concept are presented.
Document ID
19760027298
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Cochrane, J. A. (NASA Ames Research Center Moffett Field, CA, United States)
Carros, R. J. (NASA Ames Research Center Moffett Field, Calif., United States)