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Recent modifications and calibration of the Langley low-turbulence pressure tunnelModifications 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 the tunnel and typical test results for both single-element and multi-element airfoils. Modifications to the facility consisted of the following: replacement of the original cooling coils and antiturbulence screens and addition of a tunnel-shell heating system, a two dimensional model-support and force-balance system, a sidewall boundary layer control system, a remote-controlled survey apparatus, and a new data acquisition system. A calibration of the mean flow parameters in the test section was conducted over the complete operational range of the tunnel. The calibration included dynamic-pressure measurements, Mach number distributions, flow-angularity measurements, boundary-layer characteristics, and total-pressure profiles. In addition, test-section turbulence measurements made after the tunnel modifications have been included with these calibration data to show a comparison of existing turbulence levels with data obtained for the facility in 1941 with the original screen installation.
Document ID
19840019607
Acquisition Source
Legacy CDMS
Document Type
Technical Publication (TP)
Authors
Mcghee, R. J. (NASA Langley Research Center Hampton, VA, United States)
Beasley, W. D. (NASA Langley Research Center Hampton, VA, United States)
Foster, J. M. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 4, 2013
Publication Date
January 1, 1984
Subject Category
Aerodynamics
Report/Patent Number
L-15728
NAS 1.60:2328
NASA-TP-2328
Accession Number
84N27675
Funding Number(s)
PROJECT: RTOP 505-31-23-06
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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