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Not a Propeller, a Big Fan

Posted on Sun, January 3 2016
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This huge wind tunnel fan was one of two fitted to NASA’s Full Scale Wind Tunnel at its research center in Hampton, Virginia. Built in 1931 for the National Advisory Committee for Aeronautics (NACA, the predecessor to NASA), the wind tunnel was used to test most of America’s significant military aircraft of that era.

Also known as the 30 x 60 foot tunnel, the Full Scale Wind Tunnel could hold an aircraft with a wingspan of up to 12 meters (40 feet). Aerospace engineers used the wind tunnel’s accurate data to verify designs and make improvements. It was one of the most significant research tunnels ever built.