An Experimental Investigation of Vortex Flow Control for High Lift Generation PDF Download
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Author: Richard P White (Jr)
Publisher:
ISBN:
Category :
Languages : en
Pages : 210
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Book Description
An experimental research program was conducted to investigate methods of improving the performance characteristics of low-aspect ratio, swept-wing surfaces in the post-stall region. Wind tunnel tests were conducted with an unmodified wing panel and with snags, strakes and combinations thereof affixed to the panel. The prediction of changes in the performance characteristics by simplified theoretical analyses is discussed with regard to the observed complexity of the flow field produced by the vortex generators.
Author: Richard P White (Jr)
Publisher:
ISBN:
Category :
Languages : en
Pages : 210
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Book Description
An experimental research program was conducted to investigate methods of improving the performance characteristics of low-aspect ratio, swept-wing surfaces in the post-stall region. Wind tunnel tests were conducted with an unmodified wing panel and with snags, strakes and combinations thereof affixed to the panel. The prediction of changes in the performance characteristics by simplified theoretical analyses is discussed with regard to the observed complexity of the flow field produced by the vortex generators.
Author: Richard P White (Jr)
Publisher:
ISBN:
Category :
Languages : en
Pages : 190
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Book Description
A theoretical and experimental program was conducted to investigate the effects of vortex flow control on the performance characteristics of a low aspect ratio, highly-swept lifting surface. Experimentally, it was determined that the lift-curve slope and the maximum lift coefficient could be increased above that of a basic plan-form by the use of leading edge separators. A theoretical prediction technique based on a modification of a doublet vortex lattice approach to account for flow separation and external interacting vortices was found to realistically predict the measured lifting characteristics of the airfoil at high angles of attack. Favorable correlation between measured and predicted results was shown both in the total lift and in the pressure distributions. The theoretical results suggest that modest refinements can make the analysis a versatile tool for the study of the performance and maneuverability characteristics of low aspect ratio aircraft at high angles of attack. (Author).
Author: Jinjun Wang
Publisher: Cambridge University Press
ISBN: 1107161568
Category : Science
Languages : en
Pages : 293
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Book Description
Master the theory, applications and control mechanisms of flow control techniques.
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 994
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Book Description
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1148
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 16
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Book Description
On vehicles with swept wings, leading edge vortices are created at off-design conditions, Ref. 1. The leading edge vortex generally has a beneficial effect in the form of increased lift. By controlling the location of the shed vortex or vortices, vehicle roll and pitch control may be possible. Uninhabited Combat Air Vehicles (UCAV) that utilize stealth to avoid detection suffer a radar signature increase when control surfaces are deflected. Thus, there is an advantage to be gained by limiting flap deflection by utilizing vortex flow control to change vehicle attitude. In view of this, an experimental and numerical investigation was conducted on a representative UCAV configuration to define the flowfield and investigate methods to control vortex location, and ultimately, vehicle attitude. In view of this, a test program was carried out to identify the flow features of a representative UCAV configuration and utilize a simple blowing jet near the nose of the vehicle to attempt vortex flow control.
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 384
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Book Description
Author: Scott Glenfield Tennent
Publisher:
ISBN:
Category : Fluid dynamics
Languages : en
Pages : 272
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Author: North Atlantic Treaty Organization. Advisory Group for Aeronautical Research and Development
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 32
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Book Description
Author: D. M. Bushnell
Publisher:
ISBN:
Category : Submersibles
Languages : en
Pages : 52
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Book Description
