Russian intermediate range cruise missile. The 301 was designed as a military bomber, with a Mach 4 / 4,250 km/hr cruise capability at 25,000 to 27,000 m altitude. It was equipped with two turboramjets, had a gross takeoff mass of 80 metric tons, of which half was fuel. It may be related to the first stage of the MIGAKS two-stage vehicle.
Status: Design 1989. Gross mass: 80,000 kg (176,000 lb).