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Thursday, July 30, 2020 | History

2 edition of F-111 laminar flow glove flight test data analysis and boundary layer stability analysis found in the catalog.

F-111 laminar flow glove flight test data analysis and boundary layer stability analysis

F-111 laminar flow glove flight test data analysis and boundary layer stability analysis

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  • 36 Currently reading

Published by National Aeronautics and Space Administration, Langley Research Center in Hampton, Va .
Written in English

    Subjects:
  • F-111 (Jet fighter plane),
  • Airplanes -- Flight testing.

  • Edition Notes

    SeriesNASA contractor report -- 166051., NASA contractor report -- NASA CR-166051.
    ContributionsLangley Research Center.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL18029519M

    Experimental results and analysis erimental results presented in the following refer to data provided by Oxford University [3]. Some of these data are presented and analysed in [4]. The data [3] were obtained during Flight n24 of the laminar flow nacelle flight test programme which Aerodynamics of transonic flight Filed under: Aerodynamics, Transonic A theory for base pressures in transonic and supersonic flow / (Urbana, Ill.: Mechanical Engineering Dept., Univ. of Illinois, ), by Helmut Hans Korst, M. E. Childs, R. H. Page, and University of Illinois (Urbana-Champaign campus)?type=lcsubc&key=Aerodynamics.

      COMPARISON OF WIND TUNNEL AND FLIGHT TEST AFTERBODY AND NOZZLE PRESSURES FOR A TWIN-JET FIGHTER AIRCRAFT AT TRANSONIC SPEEDS, Technical Paper Authors: Jack Nugent and Odis C. Pendergraft, Jr. Report Number: NASA-TP Performing Organization: NASA Dryden Flight Research Center, Edwards, CA Abstract: Afterbody and nozzle pressures measured on a 1/scale model and in flight Develop improved techniques for the prediction of boundary layer transition on 3-D configurations and validate them against ground and flight test data. Demonstrate computationally efficient techniques to couple aerodynamic and structural analysis ://

      In flight research the Bell XA variable-stability VTOL airplane proved very useful, as did the Lockheed C equipped with boundary-layer control. The value of the C for STOL stability research was considerably increased by the incorporation of certain variable-stability features in the airplane-a modification performed by Lockheed   (If the flow within this boundary layer is laminar, then the viscous shear stress between fluid “layers” gives rise to friction drag. When the flow is turbulent, the velocity gradient, and thus the transfer of momentum gives rise to friction drag.) › 百度文库 › 语言/资格考试.


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F-111 laminar flow glove flight test data analysis and boundary layer stability analysis Download PDF EPUB FB2

STABILITY ANALYSIS OF F GLOVE speed flight. Laminar flow was obtained over as much as 80% of the wing surface area at Mach numbers up to As with the F94 glove, laminar flow was maintained using boundary layer suction through slots in the wing sur- face.

The Phoenix Sailplane flight tests achieved as much as 95% chord Get this from a library. F laminar flow glove flight test data analysis and boundary layer stability analysis.

[Langley Research Center.;] An analysis of 34 selected flight test data cases from a NASA flight program incorporating a natural laminar flow airfoil into partial wing gloves on the F TACT airplane is given.

This analysis determined the measured location of transition from laminar to turbulent :// An analysis of 34 selected flight test data cases from a NASA flight program incorporating a natural laminar flow airfoil into partial wing gloves on the F TACT airplane is given.

This analysis determined the measured location of transition from laminar to turbulent flow. The report also contains the results of a boundary layer stability   nasa contractor report - f natural laminar flow glove flight test data analysis and boundary layer stability analysis preiiminary design department boeing commercial airplane company ro.

boxseatrie, wa contra& nasi-iw~s january national aeronautlcs and space administration langley research center Runyan, L. J.; and Steers, L. L.: Boundary-Layer Stability Analysis of a Natural Laminar Flow Glove on the F TACT Airplane, Viscous Flow Drag Reduction, Vol.

72, Progress in Astronautics and Aeronautics, pp. 17–32, Google Scholar   This connection was made in a NASA EET sponsored flight test of a natural laminar flow glove on the F TACT aircraft. Linear stability analyses were correlated with transition locations inferred from boundary layer measurements in an attempt to establish transition criteria which could be used for Natural Laminar Flow (NLF) wing ://   Aircraft laminar flow control (LFC) from the s through the s is reviewed and the current status of the technology is assessed.

Examples are provided to demonstrate the benefits of LFC for subsonic and supersonic aircraft. Early studies related to the laminar boundary-layer flow physics, manufacturing tolerances for laminar flow, and insect-contamination avoidance are discussed. LFC By removing air from the boundary layer its thickness decreased and thereby promoted the stability of the laminar boundary layer over the wing.

This Supersonic Laminar Flow (SLFC) project successfully maintained laminar flow over a large portion of the wing during supersonic flight of up to Mach Runyan et al. 4 analyzed the data of 34 selected flight test cases on the F TACT airplane and studied the instability of cross-flow and the Tollmien-Schlichting (T-S) disturbance.

They found that laminar flow could extend a relatively large region on the leeward (typically from 21% to 58%). Natural Laminar Flow Hybrid Laminar Flow LFC - B, slotted glove, flight tests 6-series airfoils, Langley LPTP tests King Cobra, flight test Ames ft wind tunnel tests NLF - F/TACT flight test NLF - Boeing glove flight test NLF - F VSTFE flight test, M= HLF - ELFIN A fin 50%, S1MA, M= HLF - ELFIN A fin, flight - Forward Swept Wings - DLR-AS.

Runyan L J, Navran B H, Rozendaal R A. F natural laminar flow glove flight test data analysis and boundary layer stability analysis.

NASA Contractor Report. Abstract. Research in the area of laminar flow control (LFC) dates back to the ’s when early applications of stability theory led to the observation that laminar boundary layers can be stabilized by either favorable pressure gradients or small amounts of wall :// 21st Century Collection of NASA and NACA Dryden Technical Reports: X-Plane, SR, Space Shuttle, Hypersonic Research, Fighter Planes (Two CD-ROM Set) [News, World Spaceflight] on *FREE* shipping on qualifying offers.

21st Century Collection of NASA and NACA Dryden Technical Reports: X-Plane, SR, Space Shuttle, Hypersonic Research Review And Assessment Of Turbulence Transition Models 48 Reynolds number (Rex) 10 6 Skinfrictioncoefficient(Cf) 0 1 2 3 0 Test data (Tu = %) Laminar S-J correlation N-L correlation Fig.

Comparisons of skin friction coefficient distribution predicted by LCTM with different empirical correlations B /review-and-assessment-of-turbulence-transition-models.

Flight experiments were conducted on a single-engine turboprop aircraft fitted with a in-chord, 3-ft-span natural laminar flow glove at glove section lift coefficients from to   Two-dimensional Global Eigenmodes for the Flat Plate Boundary-layer Flow CHEDEVERGNE F.

Chedevergne, G. Casalis Biglobal Linear Stability Analysis and DNS Investigations of the Flow Induced by Wall Injection RODRIGUEZ Daniel Rodriguez, Vassilis LAMINAR-TURBULENT TRANSITION MECHANISMS, PREDICTION AND CONT American Institute of Aeronautics and Astronautics Sunrise Valley Drive, Suite Reston, VA   Keywords: Boundary layer transition; F aircraft; Flight tests; Laminar flow; Swept wings.

Notes: Presented at the 4th AIAA Flight Test Conference, San Diego, Calif., May FORMULATION OF A GENERAL TECHNIQUE FOR PREDICTING PNEUMATIC ATTENUATION ERRORS IN AIRBORNE PRESSURE SENSING DEVICES Authors: Stephen A.

Whitmore Low Reynolds number aerodynamics is important to a number of natural and man-made flyers. Birds, bats, and insects have been of interest to biologists for years, and active study in the aerospace engineering community, motivated by interest in micro air vehicles (MAVs), has been increasing ://.

30th AIAA Applied Aerodynamics Conference. 25 June - 28 June New Orleans, Louisiana. A Transonic Laminar-Flow Wing Glove Flight Experiment: Computational Evaluation and Linear Stability. 3-D Inlet Shock-Boundary Layer Interactions - PIV Database for the Second SBLI ://  Improved understanding and measurement of the detailed flow physics at wind tunnel and flight Reynolds numbers: A better understanding is needed of turbulence and its modeling; of boundary layer transition, laminar bubbles, turbulent reattachment and relaminarization phenomena; and of merging boundary layers and wakes, including the detailed   NASA/TP Overview of Laminar Flow Control Ronald D.

Joslin Langley Research Center, Hampton, Virginia October