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Family: R-7. Country: Russia. Status: Hardware. Library of Congress Designation: A-2. Department of Defence Designation: SL-4. ASCC Reporting Name: Sapwood.
Uprated Soyuz booster designed for high performance Russian government missions - delivery of Soyuz and Progress spacecraft to the International Space Station. Upgraded engines, modern avionics, reduced non-Russian content. Unknown differences to Soyuz ST.
LEO Payload: 7,420 kg. to: 193 km Orbit. at: 51.8 degrees. Liftoff Thrust: 422,500 kgf. Total Mass: 305,000 kg. Core Diameter: 3.0 m. Total Length: 46.1 m. Launch Price $: 50.00 million. in 1999 price dollars.
- Stage Number: 0. 4 x Soyuz ST-0 Gross Mass: 44,400 kg. Empty Mass: 3,810 kg. Thrust (vac): 104,123 kgf. Isp: 310 sec. Burn time: 120 sec. Isp(sl): 264 sec. Diameter: 2.7 m. Span: 2.7 m. Length: 19.6 m. Propellants: Lox/Kerosene No Engines: 1. RD-117
- Stage Number: 1. 1 x Soyuz ST-1 Gross Mass: 105,400 kg. Empty Mass: 6,875 kg. Thrust (vac): 101,931 kgf. Isp: 311 sec. Burn time: 286 sec. Isp(sl): 245 sec. Diameter: 3.0 m. Span: 3.0 m. Length: 27.8 m. Propellants: Lox/Kerosene No Engines: 1. RD-118
- Stage Number: 2. 1 x Soyuz ST-2 Gross Mass: 25,200 kg. Empty Mass: 2,355 kg. Thrust (vac): 30,000 kgf. Isp: 359 sec. Burn time: 300 sec. Diameter: 2.7 m. Span: 2.7 m. Length: 6.7 m. Propellants: Lox/Kerosene No Engines: 1. RD-0124
- 455 - Isakowitz, Steven J,, International Reference to Space Launch Systems Third Edition, AIAA, Washington DC, 2000.
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