Wind Tunnel Investigation Of Vortex Flows On F A 18 Configuration At Subsonic Through Transonic Speeds PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Wind Tunnel Investigation Of Vortex Flows On F A 18 Configuration At Subsonic Through Transonic Speeds PDF full book. Access full book title Wind Tunnel Investigation Of Vortex Flows On F A 18 Configuration At Subsonic Through Transonic Speeds.
Author | : Gary E. Erickson |
Publisher | : |
Total Pages | : 172 |
Release | : 1991 |
Genre | : Aerodynamics |
ISBN | : |
Download Wind Tunnel Investigation of Vortex Flows on F/A-18 Configuration at Subsonic Through Transonic Speeds Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 172 |
Release | : 1991 |
Genre | : |
ISBN | : |
Download Wind Tunnel Investigation of Vortex Flows on F/A-18 Configuration at Subsonic Through Transonic Speed Book in PDF, ePub and Kindle
Author | : National Aeronautics and Space Administration (NASA) |
Publisher | : Createspace Independent Publishing Platform |
Total Pages | : 170 |
Release | : 2018-07-23 |
Genre | : |
ISBN | : 9781723487941 |
Download Wind Tunnel Investigation of Vortex Flows on F/a-18 Configuration at Subsonic Through Transonic Speed Book in PDF, ePub and Kindle
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 | : Gary E. Erickson |
Publisher | : |
Total Pages | : 161 |
Release | : 1991 |
Genre | : Aerodynamics |
ISBN | : |
Download Wind Tunnel Investigation of Vortex Flows on F/A-18 Configuration at Subsonic Through Transonic Speeds Book in PDF, ePub and Kindle
Author | : National Aeronautics and Space Administration (NASA) |
Publisher | : Createspace Independent Publishing Platform |
Total Pages | : 108 |
Release | : 2018-07-23 |
Genre | : |
ISBN | : 9781723488238 |
Download Wind Tunnel Investigations of Forebody Strakes for Yaw Control on F/a-18 Model at Subsonic and Transonic Speeds Book in PDF, ePub and Kindle
Wind tunnel investigations have been conducted of forebody strakes for yaw control on 0.06-scale models of the F/A-18 aircraft at free-stream Mach numbers of 0.20 to 0.90. The testing was conducted in the 7- by 10-Foot Transonic Tunnel at the David Taylor Research Center and the Langley 7- by 10-Foot High-Speed Tunnel. The principal objectives of the testing were to determine the effects of the Mach number and the strake plan form on the strake yaw control effectiveness and the corresponding strake vortex induced flow field. The wind tunnel model configurations simulated an actuated conformal strake deployed for maximum yaw control at high angles of attack. The test data included six-component forces and moments on the complete model, surface static pressure distributions on the forebody and wing leading-edge extensions, and on-surface and off-surface flow visualizations. The results from these studies show that the strake produces large yaw control increments at high angles of attack that exceed the effect of conventional rudders at low angles of attack. The strake yaw control increments diminish with increasing Mach number but continue to exceed the effect of rudder deflection at angles of attack greater than 30 degrees. The character of the strake vortex induced flow field is similar at subsonic and transonic speeds. Cropping the strake planform to account for geometric and structural constraints on the F-18 aircraft has a small effect on the yaw control increments at subsonic speeds and no effect at transonic speeds. Erickson, Gary E. and Murri, Daniel G. Langley Research Center DIRECTIONAL CONTROL; F-18 AIRCRAFT; FLOW VISUALIZATION; FOREBODIES; STRAKES; SUBSONIC SPEED; TRANSONIC SPEED; VORTICES; WIND TUNNEL TESTS; YAW; AERODYNAMICS; ANGLE OF ATTACK; FLOW DISTRIBUTION; MACH NUMBER; PLANFORMS; PRESSURE DISTRIBUTION; STATIC PRESSURE; VORTEX BREAKDOWN; VORTEX GENERATORS; YAWING MOMENTS...
Author | : Gary E. Erickson |
Publisher | : |
Total Pages | : 108 |
Release | : 1993 |
Genre | : Aerodynamics |
ISBN | : |
Download Wind Tunnel Investigations of Forebody Strakes for Yaw Control on F/A-18 Model at Subsonic and Transonic Speeds Book in PDF, ePub and Kindle
Author | : Gary E. Erickson |
Publisher | : |
Total Pages | : 234 |
Release | : 1991 |
Genre | : Aerodynamics |
ISBN | : |
Download Wind Tunnel Investigation of the Interaction and Breakdown Characteristics of Slender-wing Vortices at Subsonic, Transonic, and Supersonic Speeds Book in PDF, ePub and Kindle
Author | : Farhad Ghaffari |
Publisher | : |
Total Pages | : 72 |
Release | : 1994 |
Genre | : Hornet (Jet fighter plane) |
ISBN | : |
Download Navier-Stokes, Flight, and Wind Tunnel Flow Analysis for the F/A-18 Aircraft Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 704 |
Release | : 1995 |
Genre | : Aeronautics |
ISBN | : |
Download Scientific and Technical Aerospace Reports Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 616 |
Release | : 1992-10 |
Genre | : Government publications |
ISBN | : |
Download Monthly Catalogue, United States Public Documents Book in PDF, ePub and Kindle