by National Aeronautics and Space Administration, Scientific and Technical Information Branch in Washington, D.C, [Springfield, Va] .
Written in English
|Statement||Robert J. McGhee, William D. Beasley and Jean M. Foster|
|Series||NASA technical paper -- 2328|
|Contributions||Beasley, William D, Foster, Jean M, United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch|
|The Physical Object|
|Number of Pages||62|
Recent modifications and calibration of the Langley low-turbulence pressure tunnel. By W. D. Beasley, R. J. Mcghee and J. M. Foster. Abstract. Modifications to the Langley Low-Turbulence Pressure Tunnel are presented and a calibration of the mean flow parameters in the test section is provided. Also included are the operational capability of Author: W. D. Beasley, R. J. Mcghee and J. M. Foster. Recent modifications and calibration of the Langley Low-Turbulence Pressure Tunnel / By Robert J. McGhee, Jean M. Foster, William D. Beasley and United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch. Abstract. STAR category "L"Distributed to depository libraries in microfiche."July. Abstract. Performance characteristics of an Eppler airfoil using both direct (force) and indirect (pressure) measurement techniques have been obtained at Reynolds numbers f to , in the Langley Low-Turbulence Pressure by: 7. Recent modifications and calibration of the Langley Low-Turbulence Pressure Tunnel [microform] / Robert A study of high-lift airfoils at high Reynolds numbers in the Langley Low-Turbulence Pressure Tunnel [m Experimental results for a flapped natural-laminar-flow .
There are 25 tunnels with length more than 2 kilometers, constructed for various hydropower projects. The longest pressure tunnel is km long and – m in diameter for the Yutzexi I Station in the Southwest Region. The Tianshengqiao Project on the upstream reach of Hongshuihe is proposed to drive 3 power tunnels each of km long. Low-Turbulence Pressure Tunnel. The Langley Low-Turbulence Pressure Tunnel (LTPT) is a single return, closed-circuit tunnel that can operate from 1 to 10 atmospheres. The LTPT has been used for tests of high-lift airfoils, basic research, and theory validation. " Recent Modifications and Calibration of the Langley Low-Turbulence Pressure Tunnel, " NASA TP, 26 van Ingen, J. L., Boermans, L. M. M., and Blom, J. J. H., " . The first series of airfoils, designated “M sections” for Max M. Munk, was tested in the Langley Variable-Density Tunnel (Ref. 4). This series was significant because it represented a systematic approach to airfoil development as opposed to earlier, random, cut-and-try approaches.
" Recent modifications and calibration of the Langley low-turbulence pressure tunnel ", NASA TP, Vogelaar, H.L.J., " Wall blowing requirements for 2-D high-lift testing in pressurized. The model contour accuracy was generally within ± inch. Wind Tunnel The Langley Low- Turbulence Pressure Tunnel (ref. 3) is a closed-throat, single-return tunnel which can be operated at stagnation pressures from 1 to 10 atmospheres w'ith wind-tunnel empty-test-section Mach numbers up to and , respectively. “ Recent Modifications and Calibration of the Langley Low-Turbulence Pressure Tunnel,” NASA TP, Google Scholar  van Ingen J. L., Boermans L. M. M. and Blom J. J. H., “ Low-Speed Airfoil Section Research at Delft University of Technology,” ICAS 80 . The Volvo Cars aerodynamic wind tunnel has had a vortical flow angularity pattern in the test section since its original commissioning in The vortical flow nature persisted after an upgrade in , when the fan was replaced and a moving ground system was introduced. It has been hypothesized that the cause for this flow angularity pattern was leakages around the heat exchanger installed.