Engine Model: Burlak Stage 1. Application: Burlak stage 1. Propellants: N2O4/UDMH. Thrust(vac): 360.000 kN (80,930 lbf). Isp: 320 sec. Isp (sea level): 270 sec. Burn time: 140 sec. Chambers: 1. Country: Russia. Status: Development ended 1992. Masses, thrust, specific impulse estimated based on total vehicle mass of 28.5 tonnes and first stage burn time of 140 seconds. Air launched from Tu-160 at 13,500 m, Mach 1.7 release conditions.
Burlak Stage 1 used on Rocket Stages