This page no longer updated from 31 October 2001. Latest version can be found at NB-52

NB-52 rocketplane launcher with X-15

Credit: NASA. 29,098 bytes. 538 x 332 pixels.

Gross Mass: 177,273 kg. Empty Mass: 70,545 kg. Thrust (vac): 43,896 kgf. Isp: 5,142 sec. Burn time: 48,000 sec. Propellants: Air/Kerosene Isp(sl): 4,675 sec. Diameter: 14.7 m. Span: 56.4 m. Length: 47.7 m. Country: USA. No Engines: 8. J57-19 Status: Hardware. Comments: Boeing Bomber-swept wing. Maximum release conditions: Wing mounted, 25,000 kg (19.1 m length x 6.7 m span) at 880 kph at 11,448 m altitude.
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Last update 12 March 2001.
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© Mark Wade, 2001 .