Russian winged orbital launch vehicle. Turbojet/ramjet-powered two stage to orbit horizontal takeoff / horizontal landing vehicle. Mach 6 stage separation. The orbiter had a 2000 km cross-range capability with landing on airfields with runways of 3500 m length or more.
Status: Study 1993. Payload: 12,600 kg (27,700 lb). Gross mass: 420,000 kg (920,000 lb). Apogee: 200 km (120 mi).
LEO Payload: 12,600 kg (27,700 lb) to a 200 km orbit at 51.00 degrees.