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X-1D
Part of XS-1
American manned rocketplane. Study 1953. The X-1A, B, and D were essentially identical rocketplanes intended to reach speeds above Mach 2.
 Status: Study 1953. 
The X-1A and X-1D were destroyed in in-flight explosions; the X-1B survived, training future moon lander Neil Armstrong on its last flights in 1958.
Family: 
Rocketplane, 
Suborbital, 
US Rocketplanes. 
Country: 
USA. 
Engines: 
XLR11. 
Propellants: 
Lox/Alcohol. 
Agency: 
Bell. 
Bibliography: 
4295, 
49, 
97. 
1951 July 24 - . 
- X-1D Flight 1 - . 
Crew: Ziegler. 
 Payload: X-1D flight 1. Nation: USA. 
Related Persons: Ziegler. 
Class: Manned. 
 Type: Manned rocketplane. Spacecraft Bus: XS-1. 
Spacecraft: X-1D. 
Bell flight 1. Glide flight for familiarization. Nose landing gear broken on landing. Following repairs, plane turned over to the Air Force.. 
 
1951 August 22 - . 
- X-1D Flight 2 - . 
Crew: Everest. 
 Payload: X-1D flight 2. Nation: USA. 
Related Persons: Everest. 
Class: Manned. 
 Type: Manned rocketplane. Spacecraft Bus: XS-1. 
Spacecraft: X-1D. 
AF flight 1. Launch aborted, but X-1D suffered low-order explosion during pressurization for fuel jettison. Plane jettisoned from B-50. X-1D exploded on impact with desert. Everest managed to get into B-50 bomb bay before drop.. 
 
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