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Soyuz-ST-B
Part of R-7 Family
Soyuz-2 LV
Soyuz-2 LV
Credit: TsSKB
Uprated Soyuz booster designed for commercial customers. Upgraded engines, modern digital avionics, reduced non-Russian content. Can be used with either Ikar or Fregat upper stages. The 'FG' was the military version.

AKA: A-2; Sapwood; SL-4; Soyuz 2; Soyuz FG; Soyuz ST; Soyuz-2-1A. Status: Active. First Launch: 2011-10-21. Last Launch: 2014-08-22. Number: 6 . Payload: 7,800 kg (17,100 lb). Thrust: 4,144.70 kN (931,766 lbf). Gross mass: 310,000 kg (680,000 lb). Height: 43.40 m (142.30 ft). Diameter: 2.95 m (9.67 ft). Apogee: 240 km (140 mi).

Also known as the Soyuz 2, it was a modernization of the Soyuz launcher that increased general performance. The basic launch vehicle design remained the same. Changes were limited to:

  • The first and second stage engines featured improved performance with new injectors and mixture ratio.
  • The third stage engine performance was increased.
  • The launch vehicle was equipped with a new control system allowing in-flight orbital plane change (whereas all earlier R-7 derived vehicles flew a fixed trajectory, with the launch table rotated before launch to the appropriate azimuth).
  • A new digital telemetry system provided for launch vehicle monitoring.
  • A new, larger-diameter fairing (3.65 meters in diameter) was used.

The standard fourth stage was the Fregat orbital module.

LEO Payload: 7,800 kg (17,100 lb) to a 240 km orbit at 51.80 degrees. Launch Price $: 40.000 million in 1999 dollars.

Stage Data - Soyuz ST

  • Stage 0. 4 x Soyuz ST-0. Gross Mass: 44,400 kg (97,800 lb). Empty Mass: 3,810 kg (8,390 lb). Thrust (vac): 1,021.097 kN (229,552 lbf). Isp: 310 sec. Burn time: 120 sec. Isp(sl): 264 sec. Diameter: 2.68 m (8.79 ft). Span: 2.68 m (8.79 ft). Length: 19.60 m (64.30 ft). Propellants: Lox/Kerosene. No Engines: 1. Engine: RD-117. Status: In production. Comments: Gross mass includes 1190 kg of hydrogen peroxide and 280 kg of liquid nitrogen expended during ascent but not contributing to propulsion.
  • Stage 1. 1 x Soyuz ST-1. Gross Mass: 105,400 kg (232,300 lb). Empty Mass: 6,875 kg (15,156 lb). Thrust (vac): 999.601 kN (224,719 lbf). Isp: 311 sec. Burn time: 286 sec. Isp(sl): 245 sec. Diameter: 2.95 m (9.67 ft). Span: 2.95 m (9.67 ft). Length: 27.80 m (91.20 ft). Propellants: Lox/Kerosene. No Engines: 1. Engine: RD-118. Status: In production. Comments: Gross mass includes 2600 kg of hydrogen peroxide and 520 kg of liquid nitrogen expended during ascent but not contributing to propulsion.
  • Stage 2. 1 x Soyuz ST-2. Gross Mass: 25,200 kg (55,500 lb). Empty Mass: 2,355 kg (5,191 lb). Thrust (vac): 294.000 kN (66,093 lbf). Isp: 359 sec. Burn time: 300 sec. Diameter: 2.66 m (8.72 ft). Span: 2.66 m (8.72 ft). Length: 6.74 m (22.11 ft). Propellants: Lox/Kerosene. No Engines: 1. Engine: RD-0124. Status: In production.

Family: orbital launch vehicle. Country: Russia. Engines: RD-0124, RD-117, RD-118. Spacecraft: ELiTeBus, Metop, Meridian, Galileo Navsat, Gaia. Launch Sites: Baikonur, Plesetsk, Baikonur LC31, Plesetsk LC43/4, Kourou ELS. Stages: Soyuz ST-0, Soyuz ST-1, Soyuz ST-2. Agency: Korolev bureau.


Photo Gallery

Soyuz-2 LVSoyuz-2 LV
Credit: TsSKB



2011 October 21 - . 10:30 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELS. LV Family: R-7. Launch Vehicle: Soyuz-ST-B.
  • GalileoSat-1 - . Payload: Galileo-PFM / Thijs. Mass: 640 kg (1,410 lb). Nation: Europe. Class: Navigation. Type: Navigation satellite. Spacecraft Bus: Galileo Navsat. Spacecraft: Galileo Navsat. USAF Sat Cat: 37846 . COSPAR: 2011-060A. Apogee: 23,307 km (14,482 mi). Perigee: 23,234 km (14,436 mi). Inclination: 54.7000 deg. Period: 846.80 min. First Galileo navigation satellites launched to establish an autonomous European navigation satellite constellation. First Soyuz booster launch from the new Ensemble de Lancement Soyuz pad in Kourou..
  • GalileoSat-2 - . Payload: Galileo-FM2 / Natalia. Mass: 640 kg (1,410 lb). Nation: Europe. Class: Navigation. Type: Navigation satellite. Spacecraft Bus: Galileo Navsat. Spacecraft: Galileo Navsat. USAF Sat Cat: 37847 . COSPAR: 2011-060B. Apogee: 23,274 km (14,461 mi). Perigee: 23,228 km (14,433 mi). Inclination: 54.7000 deg. Period: 845.90 min.

2012 October 12 - . 18:15 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELS. LV Family: R-7. Launch Vehicle: Soyuz-ST-B.
  • GalileoSat-3 - . Payload: Galileo IOV-3 / David. Mass: 640 kg (1,410 lb). Nation: Europe. Class: Navigation. Type: Navigation satellite. Spacecraft Bus: Galileo Navsat. Spacecraft: Galileo Navsat. USAF Sat Cat: 38857 . COSPAR: 2012-055A. Apogee: 23,228 km (14,433 mi). Perigee: 23,217 km (14,426 mi). Inclination: 55.3000 deg. Period: 844.70 min. In-orbit validation satellite for the Galileo navigation system. Nicknamed David in honor a competition winner, Mr. David Markarjanc (b.2001) of the Czech Republic..
  • GalileoSat-4 - . Payload: Galileo IOV-4 / Sif. Mass: 640 kg (1,410 lb). Nation: Europe. Class: Navigation. Type: Navigation satellite. Spacecraft Bus: Galileo Navsat. Spacecraft: Galileo Navsat. USAF Sat Cat: 38858 . COSPAR: 2012-055B. Apogee: 23,227 km (14,432 mi). Perigee: 23,218 km (14,426 mi). Inclination: 55.3000 deg. Period: 844.70 min. In-orbit validation satellite for the Galileo navigation system. Nicknamed Sif in honor a competition winner, Ms. Sif Skov Christensen (b.2002) of Denmark..

2013 June 25 - . 19:27 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELS. LV Family: R-7. Launch Vehicle: Soyuz-ST-B.
  • O3b SC4/FM5 - . Payload: O3B FM5. Mass: 700 kg (1,540 lb). Nation: UK. Class: Communications. Type: Communications satellite. Spacecraft Bus: ELiTeBus. Spacecraft: ELiTeBus. USAF Sat Cat: 39188 . COSPAR: 2013-031A. Apogee: 7,838 km (4,870 mi). Perigee: 7,808 km (4,851 mi). Inclination: 0.0400 deg. Period: 280.71 min. O3b (the other 3 billion) satellite providing Ka-band communications with steerable antennas for broadband internet capacity in the developing world..
  • O3b SC3/FM4 - . Payload: O3B FM4. Mass: 700 kg (1,540 lb). Nation: UK. Class: Communications. Type: Communications satellite. Spacecraft Bus: ELiTeBus. Spacecraft: ELiTeBus. USAF Sat Cat: 39189 . COSPAR: 2013-031B. Apogee: 7,838 km (4,870 mi). Perigee: 7,820 km (4,850 mi). Inclination: 0.0400 deg. Period: 280.88 min.
  • O3b SC2/FM2 - . Payload: O3B FM2. Mass: 700 kg (1,540 lb). Nation: UK. Class: Communications. Type: Communications satellite. Spacecraft Bus: ELiTeBus. Spacecraft: ELiTeBus. USAF Sat Cat: 39190 . COSPAR: 2013-031C. Apogee: 7,838 km (4,870 mi). Perigee: 7,828 km (4,864 mi). Inclination: 0.0400 deg. Period: 281.00 min.
  • O3b SC1/PFM - . Payload: O3B PFM. Mass: 700 kg (1,540 lb). Nation: UK. Class: Communications. Type: Communications satellite. Spacecraft Bus: ELiTeBus. Spacecraft: ELiTeBus. USAF Sat Cat: 39191 . COSPAR: 2013-031D. Apogee: 8,007 km (4,975 mi). Perigee: 7,843 km (4,873 mi). Inclination: 0.0300 deg. Period: 283.73 min.

2013 December 19 - . 09:12 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELS. LV Family: R-7. Launch Vehicle: Soyuz-ST-B.
  • Gaia - . Mass: 2,000 kg (4,400 lb). Nation: Europe. Class: Astronomy. Type: Astronomy satellite. Spacecraft Bus: Gaia. Spacecraft: Gaia. USAF Sat Cat: 39479 . COSPAR: 2013-074A.

    European Space Agency Gaia spacecraft to measure the three-dimensional positions and velocities of galactic stars, placed in Lagrangian Point 2. As Gaia rotated, a gigapixel detector array consisting of a complex arrangement of mirrors, CCD's, and photometers measured stellar positions, brightness and color; and Doppler shifts of stars with unprecedented accuracy. The Gaia catalog, when it is available in the 2020's, was expected to put the whole field of astrophysics on a firmer footing. Soyuz ST-B with upper stage Fregat-MT No. 1039 from Kourou-Sinnamary. The Fregat upper stage separated from the Soyuz booster at suborbital velocity. It then made a first burn to a 175 x 175 km parking orbit, then reignited for a 16-minute burn from 09:33 GMT to propel Gaia to a 344 km x 962,690 km x 15.0 deg orbit, on its way to the Sun-Earth L2 point. Gaia fired its own propulsion system of 6 10-N thrusters to raise apogee to around 1.5 million km towards midnight; after a few weeks it entered a Lissajous orbit around the L2 point and began observations. Gaia's data will take years to process and was to result in the best yet catalog of galactic stars.


2014 July 10 - . 18:55 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELS. LV Family: R-7. Launch Vehicle: Soyuz-ST-B.
  • O3b FM3 - . Mass: 700 kg (1,540 lb). Nation: UK. Spacecraft Bus: ELiTeBus. Spacecraft: ELiTeBus. USAF Sat Cat: 40079 . COSPAR: 2014-038A. Apogee: 8,069 km (5,013 mi). Perigee: 8,062 km (5,009 mi). Inclination: 0.0300 deg. Period: 287.93 min.
  • O3b FM7 - . Mass: 700 kg (1,540 lb). Nation: UK. Spacecraft Bus: ELiTeBus. Spacecraft: ELiTeBus. USAF Sat Cat: 40080 . COSPAR: 2014-038B. Apogee: 8,071 km (5,015 mi). Perigee: 8,061 km (5,008 mi). Inclination: 0.0300 deg. Period: 287.93 min.
  • O3b FM6 - . Mass: 700 kg (1,540 lb). Nation: UK. Spacecraft Bus: ELiTeBus. Spacecraft: ELiTeBus. USAF Sat Cat: 40081 . COSPAR: 2014-038C. Apogee: 8,069 km (5,013 mi). Perigee: 8,063 km (5,010 mi). Inclination: 0.0300 deg. Period: 287.93 min.
  • O3b FM8 - . Mass: 700 kg (1,540 lb). Nation: UK. Spacecraft Bus: ELiTeBus. Spacecraft: ELiTeBus. USAF Sat Cat: 40082 . COSPAR: 2014-038D. Apogee: 8,071 km (5,015 mi). Perigee: 8,061 km (5,008 mi). Inclination: 0.0300 deg. Period: 287.93 min.

2014 August 22 - . 03:15 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELS. LV Family: R-7. Launch Vehicle: Soyuz-ST-B.
  • GalileoSat-5 - . Payload: Galileo FOC FM01 / Doresa. Mass: 733 kg (1,615 lb). Nation: Europe. Agency: AE. Spacecraft Bus: Galileo Navsat. Spacecraft: Galileo Navsat. USAF Sat Cat: 40128 . COSPAR: 2014-050A. Apogee: 25,918 km (16,104 mi). Perigee: 13,721 km (8,525 mi). Inclination: 49.6900 deg. Period: 703.33 min.

    Europe's first two Galileo FOC (Full Operational Capability) navigation satellites were put on a suborbital trajectory by the booster. The Fregat-MT No. 1039 upper stage made a first burn to put the stack in elliptical transfer orbit, and then began the coast to apogee. At apogee at 16:05 GMT the Fregat made a second burn intended to circularize the orbit at 23500 km x and 55.0 deg inclination. The satellites separated from the Fregat at 16:15 GMT. Unfortunately the Fregat was wrongly oriented and the orbit actually reached was 13,700 x 25,900 km x 49.7 deg. An attitude control thrusters may have failed during the coast, leaving Fregat pointing the wrong way at second main engine ignition.

  • GalileoSat-6 - . Payload: Galileo FOC FM02 / Milena. Mass: 733 kg (1,615 lb). Nation: Europe. Agency: AE. Spacecraft Bus: Galileo Navsat. Spacecraft: Galileo Navsat. USAF Sat Cat: 40129 . COSPAR: 2014-050B. Apogee: 25,906 km (16,097 mi). Perigee: 13,702 km (8,514 mi). Inclination: 49.6900 deg. Period: 702.69 min.


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