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Fregat stage
Fregat upper stage for Soyuz launch vehicle.
Credit - Starsem
Model: Fregat. Gross Mass: 6,535 kg (14,407 lb). Empty Mass: 1,100 kg (2,400 lb). Thrust (vac): 19.600 kN (4,406 lbf). Isp: 327 sec. Burn time: 877 sec. Propellants: N2O4/UDMH. Diameter: 3.35 m (10.99 ft). Span: 3.35 m (10.99 ft). Length: 1.50 m (4.90 ft). Country: Russia. No Engines: 1. Motor: S5.92. Status: In production.

Upper stage developed from propulsion bus for Lavochkin lunar and planetary probes (Luna Ye-8, Mars M1, Fobos 1F). 20 restarts.

Used on Launch Vehicles:
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© Mark Wade, 1997 - 2008 except where otherwise noted.