Engine Model: KTDU-80. Manufacturer Name: KTDU-80. Other Designations: S5.80. Designer: Isayev. Developed in: -1977. Application: Soyuz TM, Progress M. Propellants: N2O4/UDMH. Thrust(vac): 6.190 kN (1,392 lbf). Isp: 302 sec. Burn time: 890 sec. Mass Engine: 310 kg (680 lb). Diameter: 2.10 m (6.80 ft). Length: 1.20 m (3.95 ft). Chambers: 1. Chamber Pressure: 8.80 bar. Area Ratio: 153.80. Oxidizer to Fuel Ratio: 1.85. Thrust to Weight Ratio: 2.03. Country: Russia. Status: In Production. Propulsion system includes 4 spherical tanks for a total of 880 kg propellant. Developed from NII Mash experimental thruster, 3 thrust levels by 4 valves: 6000 N, 0.7 N, 0.3 N. Specific impulse 326 - 286 sec.
KTDU-80 used on Spacecraft
Bibliography:- Haeseler, Dietrich, Visit to the museum of Chemical Machining Design Bureau, Kalinin 1994 via Dietrich Haeseler.
- Haeseler, Dietrich, Datasheets from NII Mashinostroeniye, Nishnaya Salda,
1992 via Dietrich Haeseler.