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

Used on: Progress M.

Used on: Progress M PAO.

Used on: Soyuz TM.

Used on: Soyuz TM PAO.

Used on: Soyuz TMA.

Used on: Soyuz TMA PAO.

Bibliography and Further Reading

Haeseler, Dietrich, Datasheets from NII Mashinostroeniye, Nishnaya Salda, 1992 via Dietrich Haeseler.

Haeseler, Dietrich, Visit to the museum of Chemical Machining Design Bureau, Kalinin 1994 via Dietrich Haeseler.

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