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Record Details

Record 12 of 36628
Aerodynamic flow quality and acoustic characteristics of the 40- by 80-foot test section circuit of the National Full-Scale Aerodynamic Complex
Author and Affiliation:
Olson, Lawrence E.(NASA Ames Research Center, Moffett Field, CA, United States)
Zell, Peter T.(NASA Ames Research Center, Moffett Field, CA, United States)
Soderman, Paul T.(NASA Ames Research Center, Moffett Field, CA, United States)
Falarski, Michael D.(NASA Ames Research Center, Moffett Field, CA, United States)
Corsiglia, Victor R.(NASA Ames Research Center, Moffett Field, CA, United States)
Edenborough, H. Kipling(NASA Ames Research Center, Moffett Field, CA, United States)
Abstract: The 40- by 80-foot wind tunnel circuit of the National Full-Scale Aerodynamic Complex (NFAC) has recently undergone major modifications and subsequently completed final acceptance testing. The initial testing and calibration of the wind tunnel are described and in many cases these results are compared with predictions derived from model tests and theoretical analyses. The wind tunnel meets or exceeds essentially all performance objectives. The facility runs smoothly and routinely at its maximum test-section velocity of 300 knots (Mach number = 0.45). An effective cooling air exchange system enables the wind tunnel to operate indefinitely at this maximum power condition. Throughout the operating envelope of the wind tunnel the test-section dynamic pressure is uniform to within + or - 0.5 deg, and the axial component of turbulence is generally less than 0.5 percent. Acoustic measurements indicate that, due to the low noise fans and acoustic treatment in the wind-tunnel circuit and test section, the background noise level in the test section is comparable to other large-scale acoustic wind tunnels in the United States and abroad.
Publication Date: Jan 01, 1988
Document ID:
19880049970
(Acquired Nov 28, 1995)
Accession Number: 88A37197
Subject Category: RESEARCH AND SUPPORT FACILITIES (AIR)
Report/Patent Number: SAE PAPER 872328
Document Type: Conference Paper
Publication Information: (SEE A88-37176)
Publisher Information: United States
Meeting Information: International Powered Lift Conference and Exposition; Dec. 7-10, 1987; Santa Clara, CA; United States
Meeting Sponsor: SAE, DOT, DOD, and NASA.
Financial Sponsor: NASA; United States
Organization Source: NASA Ames Research Center; Moffett Field, CA, United States
Description: 16p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: FULL SCALE TESTS; SUBSONIC WIND TUNNELS; WIND TUNNEL TESTS; AIR FLOW; BACKGROUND NOISE; SCALE MODELS; WIND TUNNEL APPARATUS
Imprint And Other Notes: IN: International Powered Lift Conference and Exposition, Santa Clara, CA, Dec. 7-10, 1987, Proceedings (A88-37176 15-01). Warrendale, PA, Society of Automotive Engineers, Inc., 1988, p. 263-278.
Availability Source: Other Sources
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