File:JPL Three large compressors used by the 20-inch Supersonic Wind Tunnel in building 79.291-87C.jpg

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JPL Three large compressors used by the 20-inch Supersonic Wind Tunnel in building 79

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Description
English: This 1950 photo shows the three large compressors used by the 20-inch Supersonic Wind Tunnel in building 79. According to a floor plan of the mezzanine level, each one included (from left to right) a 4,000 HP Westinghouse motor, a drive, and a 55,000 cubic foot Ingersoll-Rand compressor. Air was forced through a series of large pipes through and above the building. A flexible nozzle near the test section controlled the speed of air flowing over scale models of aircraft, engines, missiles, and projectiles, from Mach 1 to Mach 4.8.

A 1949 memo from Wind Tunnel Section Chief Frank E. Goddard, Jr. to JPL Director Louis G. Dunn described wind tunnel activities and facilities. (HC3-280) At that time, the 20-inch Wind Tunnel was under construction, and it went into full operation in 1951.

Building 79 is still standing today, but the wind tunnel equipment is gone and the area is now divided into several different laboratories used for low temperature microgravity testing.
Date
Source https://pub-lib.jpl.nasa.gov/docushare/dsweb/View/Collection-115
Author NASA

Licensing

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Public domain This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
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