Engine Model: 17D58E. Government Designation: 17D58E. Designer: Isayev. Application: Rokot-3 Briz; Soyuz-2 Briz; Proton Briz-M vernier. Propellants: N2O4/UDMH. Thrust(vac): 13 N (3 lbf). Isp: 247 sec. Burn time: 3,200 sec. Chambers: 1. Oxidizer to Fuel Ratio: 2.00. Country: Russia. Status: In Production. High performance storable liquid engine. Manufactured by Isayev. Small attitude control thruster in Briz upper stage propulsion system S5.98M. Minimum impulse 0.068 kg-s. Specific impulse also reported as 270 sec.