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Bell X-2 wind tunnel model. ca 1954.

Lent by Langley Research Center

This gel coated mahogany model was tested from Mach 1.0 to 1.5 in 1954-1955. The actual Bell X-2 first flew under power in 1955, and was the first airplane to reach Mach 3, or three times the speed of sound-- over 2,000 miles per hour. This record was achieved on September 27, 1956 at an altitude of 65,500 feet; the pilot was Milburn "Mel" Apt. The X-2 also set an altitude record of 126,200 feet during a slightly earlier test flight piloted by Iven C. Kincheloe. Only two X-2's were built, and both were lost in accidents, reminding us of the tragic ends met by many of these machines and their test pilots as they strove to fly higher and faster, bringing us closer to the edge of space.

Aeronautics Research Mission Directorate