Isayev N2O4/UDMH rocket engine. In Production. Small attitude control thruster in Briz upper stage propulsion system S5.98M. Total summary impulse 14,112 kg-s. Minimum impulse 4 kg-s. Specific impulse also reported as 275 sec. Oxidizer to Fuel Ratio: 2.0.
Status: In Production. Thrust: 392 N (88 lbf). Specific impulse: 252 s. Burn time: 3,200 s.