Category:Langley Research Center 7×10 foot High-Speed Tunnel
English: (See http://crgis.ndc.nasa.gov/historic/7_X_10-Foot_High_Speed_Tunnel). Located adjacent to a low-speed tunnel of the same dimensions (7 X 10-Foot 300 mph Tunnel), the 7 X 10-Foot High Speed Tunnel (HST) had an atmospheric, single-return circuit with closed throat test section. The 18-blade fixed pitch wooden fan was powered by a 14,000 hp variable-speed electric drive system, and could develop a maximum speed of approximately 675 mph. Shop and office space and other auxiliary facilities were shared with the neighboring 300 mph Tunnel.
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