Wind Tunnel Investigation of Vortex Flows on F/A-18 Configuration at Subsonic Through Transonic Speeds PDF Download
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Author: Gary E. Erickson
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 172
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Book Description
Author: Gary E. Erickson
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 172
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Book Description
Author: Gary E. Erickson
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 108
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Author: Farhad Ghaffari
Publisher:
ISBN:
Category : Hornet (Jet fighter plane)
Languages : en
Pages : 72
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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 134
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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 122
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Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781723487941
Category :
Languages : en
Pages : 170
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Book Description
A wind tunnel experiment was conducted in the David Taylor Research Center 7- by 10-Foot Transonic Tunnel of the wing leading-edge extension (LEX) and forebody vortex flows at subsonic and transonic speeds about a 0.06-scale model of the F/A-18. The primary goal was to improve the understanding and control of the vortical flows, including the phenomena of vortex breakdown and vortex interactions with the vertical tails. Laser vapor screen flow visualizations, LEX, and forebody surface static pressures, and six-component forces and moments were obtained at angles of attack of 10 to 50 degrees, free-stream Mach numbers of 0.20 to 0.90, and Reynolds numbers based on the wing mean aerodynamic chord of 0.96 x 10(exp 6) to 1.75 x 10(exp 6). The wind tunnel results were correlated with in-flight flow visualizations and handling qualities trends obtained by NASA using an F-18 High-Alpha Research Vehicle (HARV) and by the Navy and McDonnell Douglas on F-18 aircraft with LEX fences added to improve the vertical tail buffet environment. Key issues that were addressed include the sensitivity of the vortical flows to the Reynolds number and Mach number; the reduced vertical tail excitation, and the corresponding flow mechanism, in the presence of the LEX fence; the repeatability of data obtained during high angle-of-attack wind tunnel testing of F-18 models; the effects of particle seeding for flow visualization on the quantitative model measurements; and the interpretation of off-body flow visualizations obtained using different illumination and particle seeding techniques. Erickson, Gary E. Glenn Research Center F-18 AIRCRAFT; FOREBODIES; INTERACTIONAL AERODYNAMICS; LEADING EDGES; VORTEX BREAKDOWN; VORTICES; WIND TUNNEL TESTS; WINGS; ANGLE OF ATTACK; BUFFETING; FLOW VISUALIZATION; MACH NUMBER; REYNOLDS NUMBER; STABILIZERS (FLUID DYNAMICS); SUBSONIC SPEED; TAIL ASSEMBLIES; TRANSONIC SPEED; TRANSONIC WIND TUNNELS...
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 704
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Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1236
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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 496
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Author: David F. Fisher
Publisher:
ISBN:
Category :
Languages : en
Pages : 44
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