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/KeroseneIsp(sl): 4,675 sec. Diameter: 14.7 m. Span: 56.4 m. Length: 47.7 m. Country: USA. No Engines: 8. J57-19Status: 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.