Engine Model: RD-0214. Manufacturer Name: RD-0214. Government Designation: 8D811. Designer: Kosberg. Developed in: 1962-68. Application: Proton stage 3 vernier. Propellants: N2O4/UDMH. Thrust(vac): 30.980 kN (6,965 lbf). Isp: 293 sec. Chambers: 4. Chamber Pressure: 53.00 bar. Country: Russia. Status: In Production. First Flight: 1967. Based on RD-0207. Four used as steering engines for Proton Stage 3 in system RD-0212.
Bibliography:- Haeseler, Dietrich, Visit to the museum of Chemical Automatics Design Bureau, Voronezh 1992 via Dietrich Haeseler.