RD-270
Bipropellant rocket engine
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RD-270 was a single-chamber liquid-bipropellant rocket engine designed by Energomash in 1960–1970. It was to be used on the first stages of proposed heavy-lift UR-700 and UR-900 rocket families, as well as on the N1. Wikipedia
Chamber pressure: 26.1 MPa (3,790 psi)
Cycle: Full-flow staged combustion
Dry weight: 3,370 kg (7,430 lb)
Propellant: N2O4 / UDMH
Specific impulse, sea-level: 301 s (2.95 km/s)
Thrust, sea-level: 6.270 MN (1,410,000 lbf)
Thrust-to-weight ratio: 189.91