Engine Model: YaRD Type AF. Designer: Korolev. Application: nuclear ICBM. Propellants: Nuclear/LH2. Thrust(vac): 196.000 kN (44,062 lbf). Isp: 950 sec. Burn time: 700 sec. Mass Engine: 3,250 kg (7,160 lb). Chambers: 1. Thrust to Weight Ratio: 6.15. Country: Russia. Status: Study 1963. Design considered in N1 nuclear upper stage studies. Outgrowth of work done by Bondaryuk and Glushko on YaRD engines for nuclear ICBM's, but using liquid hydrogen as propellant.
YaRD Type AF used on Rocket Stages
Bibliography:- Vetrov, G S, S. P. Korolev i evo delo, Nauka, Moscow, 1998.