Engine Model: RD-0234-CH. Manufacturer Name: RD-0234-CH. Designer: Kosberg. Developed in: 1996-. Propellants: Lox/LCH4. Thrust(vac): 442.000 kN (99,365 lbf). Isp: 343 sec. Isp (sea level): 310 sec. Mass Engine: 390 kg (850 lb). Chambers: 1. Chamber Pressure: 176.00 bar. Oxidizer to Fuel Ratio: 3.40. Thrust to Weight Ratio: 115.38. Country: Russia. Status: Developed 1996-. Proposed variant of RD-0234 engine using LOX-liquid methane instead of N2O4/UDMH as propellants.