KR

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Russian intercontinental boost-glide missile. The KR (winged rocket) was a three-stage unmanned boost-glide missile developed at the Tupolev's OKB-156. Work began in 1957. Two alternates were considered for the first stage: a conventional liquid rocket or a special manned aircraft launcher. The second stage was a conventional rocket. The final winged stage included a propulsion section and nuclear warhead. The glider would cut-off at an altitude of 50 km and a velocity of 20,000 km/hr. Planned-over target speed was 7,000 km/hr at 30 km altitude. Work on the project continued only about a year before it was abandoned in favor of the more conventional Tu-123 supersonic cruise missile. The KR would have had a gross weight of 240 metric tons, and delivered a payload of 3 to 5 metric tons over a range of 9,000 to 12,000 km.

Status: Study 1957. Payload: 5,000 kg (11,000 lb).

Family: Boost-glide. Country: Russia. Agency: Tupolev bureau. Bibliography: 476.

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