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Sweeping Jet Actuators - A New Design Tool for High Lift GenerationActive Flow Control (AFC) experiments performed at the Caltech Lucas Wind Tunnel on a generic airplane vertical tail model proved the effectiveness of sweeping jets in improving the control authority of a rudder. The results indicated that a momentum coefficient (C(sub u)) of approximately 2% increased the side force in excess of 50% at the maximum conventional rudder deflection angle in the absence of yaw. However, sparsely distributed actuators providing a collective C(sub u) approx. = 0.1% were able to increase the side force in excess of 20%. This result is achieved by reducing the spanwise flow along the swept back rudder and its success is attributed to the large sweep back angle of the vertical tail. This current effort was sponsored by the NASA Environmentally Responsible Aviation (ERA) project.
Document ID
Acquisition Source
Langley Research Center
Document Type
Conference Paper
Graff, Emilio
(California Inst. of Tech. Pasadena, CA, United States)
Seele, Roman
(California Inst. of Tech. Pasadena, CA, United States)
Lin, John C.
(NASA Langley Research Center Hampton, VA, United States)
Wygnanski, Israel
(Arizona Univ. Phoenix, AZ, United States)
Date Acquired
August 27, 2013
Publication Date
May 20, 2013
Subject Category
Report/Patent Number
Meeting Information
Meeting: Innovative Control Effectors for Military Vehicles (AVT-215)
Location: Stockholm
Country: Sweden
Start Date: May 20, 2013
End Date: May 22, 2013
Funding Number(s)
WBS: WBS 699959.
Distribution Limits
Public Use Permitted.
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