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2 edition of Free-flight tests of vortex generator configurations at transonic speeds found in the catalog.

Free-flight tests of vortex generator configurations at transonic speeds

J. B. W. Edwards

Free-flight tests of vortex generator configurations at transonic speeds

by J. B. W. Edwards

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Published by H.M.S.O. in London .
Written in English

    Subjects:
  • Vortex generators.,
  • Aerodynamics, Transonic.,
  • Flaps (Airplanes)

  • Edition Notes

    Bibliography: p. 12.

    Statementby J. B. W. Edwards.
    Series[Gt. Brit.] Aeronautical Research Council. Current papers, no. 729
    Classifications
    LC ClassificationsTL507 .G77 no. 729
    The Physical Object
    Pagination[1], 12 p.
    Number of Pages12
    ID Numbers
    Open LibraryOL6018909M
    LC Control Number66077994

    This research describes a computational study undertaken to determine the effect of a flow control mechanism and its associated aerodynamics for a finned projectile. The flow control system consists of small microflaps located between the rear fins of the projectile. These small microflaps alter the flow field in the aft finned region of the projectile, create asymmetric pressure distributions    Vortex Lattice Method Velocity Induced by a General Horseshoe Vortex Application of the Boundary Conditions Relations for a Planar Wing Factors Affecting Drag Due-to-Lift at Subsonic Speeds Delta Wings Leading-Edge Extensions Asymmetric Loads on the Fuselage at High Angles

    Ground-Based Tests Flight Tests Comments About The Scaling/Correction Process(es) for Relatively Clean Cruise Configurations Summary Problems References CHAPTER 9 COMPRESSIBLE, SUBSONIC FLOWS AND TRANSONIC FLOWS Compressible, Subsonic Flow On this wing at vortex breakdown the spectrum of the unsteady excitation is unusual, having a sharp peak at particular frequency parameter. Additional tests were made on one unswept half-wing of aspect ratio 15 with an NPL aerofoil section, known to be sensitive to variations in Reynolds number at transonic ://

    Wind-excited Oscillations of Structures: Wind-tunnel Techniques for their Investigation and Prediction by D. E. J Walshe and a great selection of related books, art   The interdisciplinary character is intended to optimize the efficiency of the entire system before maximizing a partial aspect and thereby increase the chances of success of the concept. At the IFB flight tests should be carried out with a scaled unmanned demonstrator platform with wingtip mounted propellers based on the electric aircraft ://


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Free-flight tests of vortex generator configurations at transonic speeds by J. B. W. Edwards Download PDF EPUB FB2

FREE-FLIGHT TESTS OF VORTEX GENERATOR CONFIGURAITIONS AT TRANSONIC SPEEDS J.B.W. Edwards SMARY Tests have been made to uvestigate the effectiveness of vortex generators in allevlatlng the adverse effects of shock-induced boundary layer separation.

The variation In effectxveness of a flap control pn Free-flight tests of vortex generator configurations at transonic speeds. Author. Edwards, J.B.W. Institution. Royal Aircraft Establishment RAE. Date. Abstract. Tests have been made to investigate the effectiveness of vortex generators in alleviating the adverse effects of shock-induced boundarylaer ://:eedcdaa-b0ade1c2c5ab8b.

This paper uses wing characteristics from the Half Scale Unmanned Arial Vehicles (UAV) designed by Defence Technology Institute (DTI). It also demonstrates results from both plain wing and wing fitted Free-flight tests of vortex generator configurations at transonic speeds book VGs simulation using a commercial Computational Fluid Dynamics (CFD) program.

VGs designing processes (sizing and installed position) are also designed according to historical :// free-stream velocity. VGJ.

vortex generator jet. velocity ratio or ratio of jet velocity to free-stream velocity. x,y. coordinates along and normal to the horizontal surface in the free-stream direction, respectively.

device inclination angle (angle between the device axis and the horizontal surface) β Approximate shock-free transonic solution for a symmetric profile atzero incidence e.g. Stack, J. and Von Doenhoff, A.

Tests of 16 Related Aerofoils at High Speeds. NACA ReportLock, C. Problems of High-Speed Flight as J. Free-Flight Tests of Vortex Generator Configurations at Transonic Speeds. A.R.C. g Boeing airplane is mounted to a sting support system for testing at transonic speeds in the National Transonic Facility at the NASA Langley Research Center.

The model contains exten- free-light tests can frequently be used in conventional static tests as well as unique wind tunnel test tech- Tests of a mixed compression axisymmetric inlet with large transonic mass flow at Mach numbers to the effect of bleed and vortex generator configurations on pressure recovery and distortion, inlet tolerance to unstart due to changes in angle of attack or Mach number, surface pressure distributions, boundary-layer profiles, and   In this four-part series, curators Russ Lee and Evelyn Crellin take an in-depth look at the Lippisch DM 1, an experimental German glider.

At the conclusion of Part 2, U.S. Army General George S. Patton ordered the students to resume construction of the glider at the Prien Airport. A number of American visitors arrived to witness the construction of the DM 1, including the   A set of vortex generators were present on the vehicle fuselage aft of the cockpit.

To better understand how the configurations influenced the boundary layer to reduce inlet distortion, f our different vortex generator configurations were tested: 1) None, 2) C baseline, 3) C alternate, and 4) C baseline (Figure 5 American Institute of Aeronautics and Astronautics Sunrise Valley Drive, Suite Reston, VA   Initial free-flight model tests of the F configuration were led by Peter C.

Boisseau in the Langley by Foot (Full-Scale) Tunnel in October During the flight tests, the wing sweep was varied from 16 deg to ://&_THE_fhtm. The application of vortex generators to shock-induced flow separation is discussed in references II.

and 5. Reference 6 presents results of flight tests of a vortex-generator arrangement on a straight-wing airplane. The results presented herein are a summary of the information obtained to date with vortex-generator arrangements on a North American   gengo hara, free flight tests of vortex generator configurations at transonic speeds current papersno, 96 honda crr manual, nissan quest model v41 series service repair manualshop manual suzuki ltf4wd, what every woman should know about fertility and her biological clock, audi a6 service manual free, Edwards, J.

W., " Free-Flight Tests of Vortex Generator Configurations at Transonic Speeds, " Royal Aircraft Establishment, TN AeroLondon, Dec. Boundary Layer Control of Flow This article reviews research into the potential of vortex generators to mitigate shock-induced separation.

Studies ranging from those conducted in the early post-war era to those performed recently are discussed. On the basis of the investigations described in this report, it is clear that vortex generators can alleviate shock-induced boundary layer ://   Free-flight tests pf vortex generator Edwards, J.

configurations at transonic speeds. (December, ). The effects of high pressure on the flow in the reflected shock tunnel.

(September, ). The addition of perxpheral vision to the artificial horxon. (June, ). Wind tunnel measurements of   vortex generator. x, X.

coordinate along the streamwise direction. y, Y. coordinate normal to the wall. y + y value in law-of-the-wall variable (=yu τ /ν) z. coordinate along the spanwise direction and parallel to the wall. airfoil or aircraft angle of attack. device angle of incidence; device half angle for wedge, ramp, wishbone, and Free-Flight Tests of Vortex Generator Configurations at Transonic Speeds J B W Edwards INTRODUCTION TO SHOCK-INDUCED SEPARATION AND ITS PREVENTION BY DESIGN AND BOUNDARY LAYER CONTROL   Designers had known for years that flight at transonic speeds required a thin and low-aspect ratio wing form to minimize drag.

What no one understood before NACA’s work with the DM 1 was how to stabilize and control these configurations at low airspeeds so that pilots could land using a conventional aircraft landing ://   [51] Hitzel S.

M., “ High-Angle-of-Attack FXL Flight Simulations at Sub- and Transonic Speeds,” Journal of Aircraft, Mayp. doi/1.C Google Scholar [52] Jones R. T., “ Properties of Low Aspect Ration Pointed Wings at Speeds Above and Below the Speed of Sound,” NACA Rept.Google Scholar.

Vortex generator (1, words) exact match in snippet view article find links to article which use VGs include the Embraer and Symphony SA For swept-wing transonic designs, VGs alleviate potential shock-stall problems (e.g., Harrier,  TRIANGULAR-WING-FUSELAGE CONFIGURATIONS AT TRANSONIC SPEEDS FROM TESTS BY THE NACA WING-FLOW METHOD.

Albert W. Hall and James M. McKay. August 23p. diagrs., photo., tab. (NACA RM L51F01) (Declassified from Confidential, 9/10/54) Tests were made by the NACA wing-flow method at transonic speeds on four triangular-wing-fuselage   [in Chinese] [10] Xie X M, Guo R W.

Experimental research on RCS of bump inlet ; 27(2): [in Chinese] [11] Mayer D W, Bernhard H, Anderson T A J. 3D subsonic diffuser design and analysis. AIAA, [12] Sun S, Guo R W. Serpentine inlet performance enhancement using vortex generator based flow ://