BELL X-1A ROCKET PLANE SUPERSONIC FLIGHT TO MACH 2.4 EDWARDS AFB, CALIFORNIA XD86925a

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This brief film (with titles in German) shows a launch, flight and landing of the Bell X-1A rocket plane at Edwards AFB in California. The plane is piloted by famed aviator Charles "Chuck" Yeager and most likely shows his flight on 12 December 1953, when he set a new air speed record. The film begins with a shot of the rocket plane at altitude, slung under a modified B-29 aka RB-50 Superfortress. At (:27) the pilot of the B-29 begins a five second countdown and the aircraft is released. At (1:00) the rocket engines are started and the plane begins its rapid acceleration towards Mach 1.0. It exceeds the speed of sound and continues to 1,000 miles per hour and a maximum speed of Mach 2.5. At 2:14, Chuck Yeager begins his approach to the Edwards Dry Lake Bed and extends the plane's landing gear. The aircraft lands at (5:00). Produced by Paul R. Thoma Productions. (Note: this print has some repeated footage in it, for whatever reason).

Ordered by the Air Force on 2 April 1948, the X-1A (serial number 48-1384) was intended to investigate aerodynamic phenomena at speeds greater than Mach 2 (681 m/s, 2,451 km/h) and altitudes greater than 90,000 ft (27 km), specifically emphasizing dynamic stability and air loads. Longer and heavier than the original X-1, with a stepped canopy for better vision, the X-1A was powered by the same Reaction Motors XLR-11 rocket engine. The aircraft first flew, unpowered, on 14 February 1953 at Edwards AFB, with the first powered flight on 21 February. Both flights were piloted by Bell test pilot Jean "Skip" Ziegler.

After NACA started its high-speed testing with the Douglas Skyrocket, culminating in Scott Crossfield achieving Mach 2.005 on 20 November 1953, the Air Force started a series of tests with the X-1A, which the test pilot of the series, Chuck Yeager, named "Operation NACA Weep". These culminated on 12 December 1953, when Yeager achieved an altitude of 74,700 feet (22,800 m) and a new airspeed record of Mach 2.44 (equal to 1620 mph, 724.5 m/s, 2608 km/h at that altitude). Unlike Crossfield in the Skyrocket, Yeager achieved that in level flight. Soon afterwards, the aircraft spun out of control, due to the then not yet understood phenomenon of inertia coupling. The X-1A dropped from maximum altitude to 25,000 feet (7,600 m), exposing the pilot to accelerations of as much as 8g, during which Yeager broke the canopy with his helmet before regaining control. On 28 May 1954, Maj. Arthur W. Murray piloted the X-1A to a new record of 90,440 feet (27,570 m). The aircraft was transferred to NACA during September 1954, and subsequently modified. The X-1A was lost on 8 August 1955, when, while being prepared for launch from the RB-50 mothership, an explosion ruptured the plane's liquid oxygen tank. With the help of crewmembers on the RB-50, test pilot Joseph A. Walker successfully extricated himself from the plane, which was then jettisoned. Exploding on impact with the desert floor, the X-1A became the first of many early X-planes that would be lost to explosions.

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This film is part of the Periscope Film LLC archive, one of the largest historic military, transportation, and aviation stock footage collections in the USA. Entirely film backed, this material is available for licensing in 24p HD, 2k and 4k. For more information visit http://www.PeriscopeFilm.com