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17D61
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Government Designation: 17D61. Designer: Melnikov. Application: Ikar stage 4 for Soyuz-Ikar. Propellants: N2O4/UDMH. Thrust(vac): 2.943 kN (662 lbf). Isp: 326 sec. Burn time: 600 sec. Mass Engine: 820 kg (1,800 lb). Diameter: 2.72 m (8.92 ft). Length: 2.56 m (8.39 ft). Chambers: 1 + 4 + 4 + 8. Chamber Pressure: 9.00 bar. Thrust to Weight Ratio: 0.36. Country: Russia. Status: Design 1999. Derived from propulsion module of Yantar spysat, over 30 flights to 1998. Ikar upper stage upgrades the Soyuz LV, replaces Block L; increased versatility due to capability for 50 restarts. Engine thrusts: 1 x 2943 N + 4 x 110 N + 4 x 52 N + 8 x 5.88 N.
17D61 used on Rocket Stages
17D61 used on Spacecraft
Bibliography and Further Reading - Sorokin, Vladislav, Novosti Kosmonavtiki, "'Yantarnaya istoriya'", 1997, Issue 17, page 57.
- Launch Kit Flight 02, Starsem Paris 1999 (http://www.starsem.com/newsst_kit.html) via Dietrich Haeseler.
- Soyuz Launcher User Manual, via Dietrich Haeseler.
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