Status: Study 1963. Thrust: 392.00 kN (88,125 lbf). Unfuelled mass: 25,000 kg (55,000 lb). Specific impulse: 900 s. Burn time: 700 s.
Outgrowth of work done by Bondaryuk and Glushko on YaRD engines for nuclear ICBM's.
Engine: 25,000 kg (55,000 lb). Thrust to Weight Ratio: 1.6.