Fregat

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Fregat

Fregat stage
Fregat upper stage for Soyuz launch vehicle.
Credit: Starsem

N2O4/UDMH propellant rocket stage. Upper stage developed from propulsion bus for Lavochkin lunar and planetary probes (Luna Ye-8, Mars M1, Fobos 1F). 20 restarts.

Status: In production. Thrust: 19.60 kN (4,406 lbf). Gross mass: 6,535 kg (14,407 lb). Unfuelled mass: 1,100 kg (2,400 lb). Specific impulse: 327 s. Burn time: 877 s. Height: 1.50 m (4.90 ft). Diameter: 3.35 m (10.99 ft). Span: 3.35 m (10.99 ft).

Subtopics

IRDT-Fregat Inflatable heatshield technology satellite built by NPO Lavochkin for ESA, Russia. Launched 2000. Used the Fregat stage with inflatable heatshield bus.

Dumsat Cluster 2 Composite Mock-Up validation flight. Mass model of a pair of Cluster 2 scientific satellites built by Aerospatiale Matra. Dummy satellite satellite, Russia. Launched 2000. Used the Fregat stage with instrumented simulation mass bus.

Family: Technology. Country: Russia. Engines: S5.92. Launch Vehicles: R-7, Soyuz 11A511U / Fregat, Soyuz-2-1B, Soyuz ST / Fregat ST. Propellants: N2O4/UDMH. Launch Sites: Baikonur LC31.

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