Engine Model: YaRD Type V-B. Designer: Korolev. Application: nuclear ICBM. Propellants: Nuclear/LH2. Thrust(vac): 392.000 kN (88,125 lbf). Isp: 900 sec. Burn time: 700 sec. Mass Engine: 25,000 kg (55,000 lb). Chambers: 1. Thrust to Weight Ratio: 1.60. Country: Russia. Status: Study 1963. Design considered in N1 nuclear upper stage studies. This version had 7,000 kg bioshield for manned missions. Outgrowth of work done by Bondaryuk and Glushko on YaRD engines for nuclear ICBM's, but using liquid hydrogen as propellant.
YaRD Type V-B used on Rocket Stages
Bibliography:- Vetrov, G S, S. P. Korolev i evo delo, Nauka, Moscow, 1998.