One of three second generation X-1 aircraft built by Bell Aircraft Corporation is seen here parked on Rogers Dry Lake. The Bell X-1B, along with its sister ship’s, the X-1A and X-1D, had better propulsion systems, greater fuel capacity, a more traditionally designed cockpit and canopy, and almost a five-foot longer fuselage than the original X-1 aircraft. In all, 10 pilots--eight Edwards Air Force and two NACA High-Speed Flight Station--flew 27 flights in the X-1B between September 24, 1954 and January 23, 1958.