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Forebody Aerodynamics Of The F 18 High Alpha Research Vehicle With Actuated Strakes
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Book Synopsis Forebody Flow Visualization on the F-18 HARV with Actuated Forebody Strakes by : David F. Fisher
Download or read book Forebody Flow Visualization on the F-18 HARV with Actuated Forebody Strakes written by David F. Fisher and published by . This book was released on 1998 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: Off-surface smoke flow visualization and extensive pressure measurements were obtained on the forebody of the NASA F-18 High Alpha Research Vehicle equipped with actuated forebody strakes. Test points at [alpha]=50 deg. were examined in which only one strake was deflected or in which both strakes were deflected differentially. The forebody pressures were integrated to obtain forebody yawing moments. Results showed that small single strake deflections can cause an undesirable yawing moment reversal. At [alpha]=50 deg., this reversal was corrected by deploying both strakes at 20 deg. initially, then differentially from 20 deg. to create a yawing moment. The off-surface flow visualization showed that in the case of the small single strake deflection, the resulting forebody/strake vortex remained close to the surface and caused accelerated flow and increased suction pressures on the deflected side. When both strakes were deflected differentially, two forebody/strake vortices were present. The forebody/strake vortex from the larger deflection would lift from the surface while the other would remain close to the surface. The nearer forebody/strake vortex would cause greater flow acceleration, higher suction pressures and a yawing moment on that side ot the forebody. Flow visualization provided clear description of the strake vortices fluid mechanics.
Book Synopsis Wind Tunnel Investigations of Forebody Strakes for Yaw Control on F/A-18 Model at Subsonic and Transonic Speeds by : Gary E. Erickson
Download or read book Wind Tunnel Investigations of Forebody Strakes for Yaw Control on F/A-18 Model at Subsonic and Transonic Speeds written by Gary E. Erickson and published by . This book was released on 1993 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Method for Integrating Thrust-Vectoring and Actuated Forebody Strakes with Conventional Aerodynamic Controls on a High-Performance Fighter Airplane by : Frederick J. Lallman
Download or read book A Method for Integrating Thrust-Vectoring and Actuated Forebody Strakes with Conventional Aerodynamic Controls on a High-Performance Fighter Airplane written by Frederick J. Lallman and published by . This book was released on 1998 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of Actuated Forebody Strakes on the Forebody Aerodynamics of the NASA F-18 HARV by : David F. Fisher
Download or read book Effect of Actuated Forebody Strakes on the Forebody Aerodynamics of the NASA F-18 HARV written by David F. Fisher and published by . This book was released on 1996 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis High-Alpha Research Vehicle Lateral-Directional Control Law Description, Analyses, and Simulation Results by : John B. Davidson
Download or read book High-Alpha Research Vehicle Lateral-Directional Control Law Description, Analyses, and Simulation Results written by John B. Davidson and published by . This book was released on 1998 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Overview of the NASA F-18 High Alpha Research Vehicle by : Albion H. Bowers
Download or read book An Overview of the NASA F-18 High Alpha Research Vehicle written by Albion H. Bowers and published by . This book was released on 1996 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The F/A-18 High-Angle-of-Attack Ground-to-Flight Correlation; Lessons Learned by :
Download or read book The F/A-18 High-Angle-of-Attack Ground-to-Flight Correlation; Lessons Learned written by and published by . This book was released on 1997 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Flight-Determined Subsonic Longitudinal Stability and Control Derivatives of the F-18 High Angle of Attack Research Vehicle (HARV) with Thrust Vectoring by : Kenneth W. Iliff
Download or read book Flight-Determined Subsonic Longitudinal Stability and Control Derivatives of the F-18 High Angle of Attack Research Vehicle (HARV) with Thrust Vectoring written by Kenneth W. Iliff and published by . This book was released on 1997 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Exploratory Investigation of Forebody Strakes for Yaw Control of a Generic Fighter with a Symmetric 60 Deg Half-Angle Chine Forebody by :
Download or read book Exploratory Investigation of Forebody Strakes for Yaw Control of a Generic Fighter with a Symmetric 60 Deg Half-Angle Chine Forebody written by and published by . This book was released on 1997 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Flight-Determined, Subsonic, Lateral-Directional Stability and Control Derivatives of the Thrust-Vectoring F-18 High Angle of Attack Research Vehicle (HARV), and Comparisons to the Basic F-18 and Predicted Derivatives by : Kenneth W. Iliff
Download or read book Flight-Determined, Subsonic, Lateral-Directional Stability and Control Derivatives of the Thrust-Vectoring F-18 High Angle of Attack Research Vehicle (HARV), and Comparisons to the Basic F-18 and Predicted Derivatives written by Kenneth W. Iliff and published by . This book was released on 1999 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Performance, Stability, Dynamics, and Control of Airplanes by : Bandu N. Pamadi
Download or read book Performance, Stability, Dynamics, and Control of Airplanes written by Bandu N. Pamadi and published by AIAA. This book was released on 2004 with total page 810 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Technical Memorandum written by and published by . This book was released on 1996 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Innovation in Flight by : Joseph R. Chambers
Download or read book Innovation in Flight written by Joseph R. Chambers and published by . This book was released on 2005 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Langley Aerospace Test Highlights, 1990 by :
Download or read book Langley Aerospace Test Highlights, 1990 written by and published by . This book was released on 1991 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1995 with total page 1208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781722188795 Total Pages :36 pages Book Rating :4.1/5 (887 download)
Book Synopsis Effect of Actuated Forebody Strakes on the Forebody Aerodynamics of the NASA F-18 Harv by : National Aeronautics and Space Administration (NASA)
Download or read book Effect of Actuated Forebody Strakes on the Forebody Aerodynamics of the NASA F-18 Harv written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-02 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Extensive pressure measurements and off-surface flow visualization were obtained on the forebody and strakes of the NASA F-18 High Alpha Research Vehicle (HARV) equipped with actuated forebody strakes. Forebody yawing moments were obtained by integrating the circumferential pressures on the forebody and strakes. Results show that large yawing moments can be generated with forebody strakes. At angles of attack greater than 40 deg., deflecting one strake at a time resulted in a forebody yawing moment control reversal for small strake deflection angles. At alpha = 40 deg. and 50 deg., deflecting the strakes differentially about a 20 deg. symmetric strake deployment eliminated the control reversal and produced a near linear variation of forebody yawing moment with differential strake deflection. At alpha = 50 deg. and for 0 deg. and 20 deg. symmetric strake deployments, a larger forebody yawing moment was generated by the forward fuselage (between the radome and the apex of the leading-edge extensions), than on the radome where the actuated forebody strakes were located. Cutouts on the flight vehicle strakes that were not on the wind tunnel models are believed to be responsible for deficits in the suction peaks on the flight radome pressure distributions and differences in the forebody yawing moments. Fisher, David F. and Murri, Daniel G. and Lanser, Wendy R. Unspecified Center RTOP 505-68-30...
