Soyuz·Russian Federal Space Agency (ROSCOSMOS)

Soyuz STB Fregat

retired

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Specifications

Status: retired
Height: 46.3 m
Diameter: 2.95 m
Mass: 312,000 kg
Stages: 3
Thrust: 4,144 kN
Payload to LEO: 8,200 kg
Payload to GTO: 3,250 kg
First flight: 2011-10-21
Total launches: 14
Success / Fail: 13 / 1

The Soyuz-ST-A and ST-B were modified versions of the Soyuz-2 rocket, designed to launch from the Guiana Space Centre (CSG) in French Guiana. Developed as part of a European Space Agency (ESA) programme to add a medium-lift launch vehicle to complement the light-lift Vega and heavy-lift Ariane 5 rockets.

Propulsion

Boosters

4×RD-107A838 kN

RP-1 / LOX · gas-generator

NPO Energomash / KuznetsovIsp 320s (vac)since 2004four boosters

First stage

RD-108A792 kN

RP-1 / LOX · gas-generator

NPO Energomash / KuznetsovIsp 315s (vac)since 2001core

Third stage

RD-0110298 kN

RP-1 / LOX · gas-generator

KBKhAIsp 326s (vac)since 1967Blok I

Payloads it launched

60 loaded