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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
20130013994
Document Type
Conference Paper
Authors
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
Aerodynamics
Report/Patent Number
NF1676L-16485
Meeting Information
Innovative Control Effectors for Military Vehicles (AVT-215)(Stockholm)
Funding Number(s)
WBS: WBS 699959.02.20.07.01.01
Distribution Limits
Public
Copyright
Public Use Permitted.

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