Soyuz at the Guiana Space Centre

Soyuz ST (Guiana Space Centre)

Inaugural launch
Function	Provide Arianespace with a medium-class launch vehicle to compliment the light Vega and heavy Ariane 5
Manufacturer	Progress State Research and Production Rocket Space Center, NPO Lavochkin
Country of origin	Russia
Size
Height	46.2 metres (152 ft)
Diameter	10.3 metres (34 ft)
Mass	308 tonnes (303 long tons; 340 short tons)
Stages	3
Capacity
Payload to GTO	3,250 kilograms (7,170 lb)
Payload to GEO	1,440 kilograms (3,170 lb)
Payload to SSO	4,400 kilograms (9,700 lb)[1]^:43
Associated rockets
Family	Soyuz 2 (R-7)
Launch history
Status	Active
Launch sites	Guiana Space Centre
Total launches	14
Successes	13
Failures	0
Partial failures	1
First flight	21 October 2011[2]
Boosters
No. boosters	4[1]^:21
Length	19.6 metres (64 ft)
Diameter	2.68 metres (8 ft 10 in)
Empty mass	3,784 kilograms (8,342 lb)
Gross mass	44,413 kilograms (97,914 lb)
Engines	1 RD-107A
Thrust	838.5 kilonewtons (188,500 lbf)
Specific impulse	262s
Burn time	118s
Fuel	LOX/Kerosene
Core stage
Length	27.1 metres (89 ft)
Diameter	2.95 metres (9 ft 8 in)
Empty mass	6,545 kilograms (14,429 lb)
Gross mass	99,765 kilograms (219,944 lb)
Engines	1 RD-108A
Thrust	792.5 kilonewtons (178,200 lbf)
Specific impulse	255s
Burn time	286s
Fuel	LOX/Kerosene
Second stage (ST-B)
Length	6.7 metres (22 ft)
Diameter	2.66 metres (8 ft 9 in)
Empty mass	2,355 kilograms (5,192 lb)
Gross mass	27,755 kilograms (61,189 lb)
Engines	1 RD-0124
Thrust	297.9 kilonewtons (67,000 lbf)
Specific impulse	359s
Burn time	270s
Fuel	LOX/Kerosene
Upper stage - Fregat
Length	1.5 metres (4 ft 11 in)
Diameter	3.35 metres (11.0 ft)
Empty mass	920 kilograms (2,030 lb)
Gross mass	7,558 kilograms (16,663 lb)
Engines	S5.92
Thrust	19.85 kilonewtons (4,460 lbf) / 14 kilonewtons (3,100 lbf)
Specific impulse	332s
Burn time	up to 1100s (maximum 20 burns)
Fuel	N2O4 / UDMH

Soyuz at the Guiana Space Centre (also known as Soyuz at CSG or Arianespace Soyuz) is an ongoing ESA programme for operating Soyuz-ST launch vehicles from Guiana Space Centre (CSG), providing medium-size launch capability for Arianespace to accompany the light Vega and heavy-lift Ariane 5.^[3] The Soyuz vehicle is supplied by the Russian Federal Space Agency with TsSKB-Progress and NPO Lavochkin, while additional components are supplied by EADS, Thales Group and RUAG.^[1]:28–30

The Arianespace Soyuz project was announced by the ESA in 2002. Cooperation with Russia began in two areas: construction of a launch site for Soyuz in CSG and development of the Europeanized Soyuz launch vehicle. A Programme Declaration was signed in 2003 and funding along with final approval was granted on 4 February 2005.^[4][5] Initial excavation for the Ensemble de Lancement Soyouz (ELS; Soyuz Launch Complex) began in 2005, construction started in 2007, and the launch complex was completed in early 2011,^[6] allowing Arianespace to offer launch services on the Europeanized Soyuz ST-B to its clients.^[1][7] Two early flights, VS02 and VS04, used the Soyuz ST-A variant.^[8][9] Since 2011, Arianespace has ordered a total of 23 Soyuz rockets, enough to cover its needs until 2019 at a pace of three to four launches per year.^[10][11]:10

Vehicle processing

Soyuz components arrive at the CSG via ship, and are unloaded and placed in a storage area. From there, the components are brought to the Launch Vehicle Integration Building where they're assembled horizontally in an air-conditioned environment. First four boosters are attached to the core stage, and then third stage is attached to the core - identical to the procedure at Baikonur and Plesetsk Cosmodrome. Separately, the payload is mounted on a dispenser in a Payload Processing Facility and then transferred into the S3B building to be mounted to the Fregat upper stage and then encapsulated in a fairing. Subsequently, the first 3 stages of the Soyuz-ST are transported from the Integration Building to the launch pad by a train which also erects the rocket to the vertical position at the pad, where Soyuz is suspended by four support arms. Once vertical, a mobile gantry moves in and encloses Soyuz. Following that the encapsulated Fregat and payload is lifted vertically by a mobile gantry to be mounted on top of Soyuz. The Mobile Gantry is retracted an hour before the launch.^{[12][13][14][15][16]}

Future developments

Arianespace plans to operate Soyuz until at least the end of 2019, and as of 2014 intended to continue operating Soyuz alongside the planned Ariane 6 when that launcher makes its debut.^[10][17] However, the announcement of new Ariane 6 designs from Airbus and Safran opens the possibility of Ariane 6.2 replacing Soyuz.^[18]

Launch history

Inaugural flight

The first contract for the launch of Soyuz ST-B from Guiana Space Centre was signed at the 2009 Paris Air Show by the Director of the Galileo Programme and Navigation-related Activities René Oosterlinck and a CEO of Arianespace Jean-Yves Le Gall. This contract covered 2 launches of two Galileo satellites each.^[19] The contract for the satellites themselves had already been signed by ESA and Galileo Industries in 2006.^[20]

Launch vehicle components shipped from Saint Petersburg first arrived in French Guiana by ship in November 2009.^[21] The Soyuz Launch Site acceptance review took place during the last week of March 2011, leading to the first simulated launch campaign between 29 April and 4 May.^[6][22] The launch site was officially handed over from ESA to the Arianespace on 7 May 2011.^[23]

Assembly of the Soyuz ST-B begun on 12 September 2011 in the Assembly and Testing building, while two Galileo satellites underwent final tests after their arrival from Thales Alenia Space facilities in Italy on 7 and 14 September.^[24] The launch was planned for 20 October, however an anomaly was detected in the pneumatic system responsible for disconnecting the fuel lines from Soyuz third stage, forcing the mission to be postponed for 24 hours. On 21 October 2011, 7:30 local time, Soyuz ST-B took off for its inaugural, 3 hour 49 minute, flight,^[25] making it the first time Soyuz was launched outside of the former Soviet Union territory.^[26]

Flight VS09

On 22 August 2014 Arianespace launched the first two Full Operational Capability satellites for the Galileo satellite navigation constellation into Medium Earth orbit.^[27] The mission appeared to proceed normally and Arianespace reported the launch to be a success, however analysis of telemetry data provided by ESA and CNES tracking stations showed that the satellites were injected into an incorrect orbit.^[28]

	Orbit	Inclination	Eccentricity
Targeted	23,222 km x 23,222 km	55.0°	0
Achieved	25,900 km x 13,713 km	49.8°	0.23

The orbit was determined by European Space Operations Centre within 3 hours after the separation from launcher, and the satellites were operating normally and under control.^[29] Both satellites were switched to safe mode, pointing at the sun while both ESA/CNES and OHB teams investigated the failure and options for the satellites.^[30] On 25 August Arianespace announced the creation of an independent inquiry commission to investigate the anomaly.^[31] On 28 August details emerged on the events that most likely lead to the Fregat failure. At the end of the re-orientation phase the flight control system detected an incorrect angular speed and unsuccessfully attempted to use thrusters to correct the situation. The flight control system did not detect the thruster issue and continued the flight plan with the upper stage oriented in a wrong direction, leaving the satellites in an incorrect orbit.^[32]

In late September Roscosmos commission report, quoted by Izvestia, indicated that the Fregat failure was due to a design flaw leading to freezing in one of the hydrazine propellant lines, which was placed alongside a line carrying cold helium used for pressurization of the main propellant tanks. During the long first burn required for Galileo orbital insertion the propellant line was cooled to below the freezing point of hydrazine. Further investigations were focused on the software error and a means to prevent similar failures in future. Izvestia also reported that the failure of flight VS09 caused a serious reaction in Russian government. Oleg Ostapenko, Head of Roscosmos, had a "difficult conversation in the (Moscow) White House".^[33][34]

On 7 October 2014 Independent Inquiry Board announced conclusions of the investigation, revealing that a proximity of helium and hydrazine feed lines resulted in a thermal bridge that caused an interruption of propellant supply to the thrusters. Ambiguities in the design documents allowing this to happen were a result of not taking into account thermal transfers in the thermal analyses of the stage system design. Board recommended 3 corrective actions: Revamping thermal analysis, correcting design documents and modification of manufacture, assembly, integration and inspection procedures of the supply lines.^[35]

In November, ESA announced the satellites will perform a total of 15 orbital maneuvers to raise their perigee to 17,339 km. This will reduce the satellites' exposure to the Van Allen radiation belt, reduce the Doppler effect, increase satellite visibility from the ground, and allow the satellites to keep their antennas pointed at Earth during perigee. These orbits will repeat the same ground track every 20 days, allowing synchronization with other Galileo satellites which repeat the same ground track every 10 days. Once in their new orbits the satellites can begin in-orbit testing.^[36]

Recovery of the satellites concluded in March 2015, when Galileo-FOC FM2 entered a new orbit, mirrored to the orbit of Galileo-FOC FM1, which concluded its manoeuvres on the end of November 2014 and successfully passed testing. Currently satellites overfly the same location on the ground every 20 days, comparing to 10 days of standard Galileo satellites.^[37]

Missions

Date & Time (local time)	Flight	Payload	Payload weight	Orbit	Result	#
2011-10-21 07:30:26	VS01[2]	Galileo IOV-1	1,580 kilograms (3,480 lb)	MEO	Success	1
2011-12-16 23:03:48	VS02[38]	Pleiades 1, SSOT, 4 x ELISA	2,191 kilograms (4,830 lb)	SSO	Success	2
2012-10-12 15:15:01	VS03[39]	Galileo IOV-2	1,580 kilograms (3,480 lb)	MEO	Success	3
2012-12-01 23:02:50	VS04[40]	Pléiades 1B	1,070 kilograms (2,360 lb)	SSO	Success	4
2013-06-25 16:27:03	VS05[41]	O3b F1	3,204 kilograms (7,064 lb)	MEO	Success	5
2013-12-19 06:12:19	VS06[42]	Gaia	2,105 kilograms (4,641 lb)	L2	Success	6
2014-04-03 18:02:26	VS07[43]	Sentinel-1A	2,272 kilograms (5,009 lb)	SSO	Success	7
2014-07-10 15:55:56	VS08[44]	O3b F2	3,204 kilograms (7,064 lb)	MEO	Success	8
2014-08-22 09:27:11	VS09[27]	Galileo FOC-1	1,607 kilograms (3,543 lb)	MEO	Partial failure[45]	9
2014-12-18 15:37:00	VS10[46]	O3b F3	3,184 kilograms (7,020 lb)	MEO	Success	10
2015-03-27 18:46:19	VS11[47]	Galileo FOC-2	1,597 kilograms (3,521 lb)	MEO	Success	11
2015-09-11 23:08:10	VS12[48]	Galileo FOC-3	1,601 kilograms (3,530 lb)	MEO	Success	12
2015-12-17 08:51:56	VS13[49]	Galileo FOC-4	1,603 kilograms (3,534 lb)	MEO	Success	13
2016-04-25 18:02:13	VS14[50][51]	Sentinel-1B	2,300 kilograms (5,100 lb)	SSO	Success	14

All times above are local times in French-Guyana (UTC -3)

Scheduled flights

Date & time (local time)	Flight	Payload	Payload mass	Targeted Orbit	Result	#	References
2016-05-24 05:48:43	VS15	Galileo FOC-5	1,603 kilograms (3,534 lb)	MEO	Scheduled	15

For 2016, Arianespace is planning to launch two Soyuz rockets from the Guiana Space Centre.^[52]

Statistics

Flights by Mission Result

1

2

3

4

2011

2012

2013

2014

2015

2016

      Scheduled         Success         Failure         Partial Failure

Soyuz launch statistics from Guiana as of April 2016. Source: data from wikitable Missions, wikitable Scheduled flights and Arianespace website.

Launch sequence

Launch complex with withdrawn mobile gantry

Typically, operations 3 days before launch include countdown rehearsal for all stages as well as final preparations and verification of the Fregat upper stage. Two days before launch preparations for fueling begin. This is also the last day when pre-launch activity with the payload can occur.^[53] The launch sequence is optimized for each mission, the sequence described here is based on flight VS07 which lifted the Sentinel-1A satellite:^[16][54]

T Minus	Event	Altitude
T- 06:30:00	Mission control team B on a console, beginning of a network countdown
T- 04:50:00	State Commission meeting giving fueling authorization
T- 04:00:00	Beginning of fueling
T- 03:00:00	Payload switched to pre-launch mode
T- 02:20:00	Readiness report
T- 01:45:00	End of fueling
T- 01:21:00	GO / NO-GO roll-call
T- 01:00:00	Mobile gantry withdrawal
T- 00:10:00	Payload switches to onboard power supply
T- 00:06:10	Beginning of autosequence
T- 00:05:00	Fregat switches to onboard power supply
T- 00:01:00	Activation of automatic launch sequence
T- 00:00:40	Launcher switches to onboard power supply
T- 00:00:20	Lower stage umbilical mast withdrawal
T- 00:00:17	Main engine ignition
T- 00:00:15	Preliminary thrust level
T- 00:00:03	Maximum thrust level
T+ 00:00:00	Liftoff
T+ 00:01:11	Max Q
T+ 00:01:58	Boosters separation	60 kilometres (37 mi)
T+ 00:03:29	Fairing separation	120 kilometres (75 mi)
T+ 00:04:47	2nd stage separation	240 kilometres (150 mi)
T+ 00:04:48	2nd stage ignition
T+ 00:04:53	Aft section separation (connects 1st with 2nd stage)
T+ 00:08:46	Fregat upper stage separation
T+ 00:09:46	Fregat ignition	410 kilometres (250 mi)
T+ 00:20:04	Fregat shutdown
T+ 00:23:29	Payload separation	693 kilometres (431 mi)

References

1. "Soyuz from the Guiana Space Centre - User's manual" (PDF). Arianespace. March 2012. Retrieved 16 December 2015.
2. "A Historic Launch For Arianespace: First Soyuz Mission From Guiana Space Center A Success; First Two Galileo Satellites In Orbit" (Press release). Arianespace. 21 October 2011. Retrieved 17 December 2015.
3. "Arianespace takes official delivery from ESA of the Soyuz launch complex at the Guiana Space Center" (Press release). Arianespace. 7 May 2011. Archived from the original on July 7, 2011. Retrieved 24 August 2014.
4. "Access to space today and tomorrow: what does Europe need?". Space Daily. 26 May 2003. Retrieved 24 August 2014.
5. "Europe takes key decisions to ensure the long-term viability of its launcher sector". Arianespace. 5 February 2004. Archived from the original on December 12, 2010. Retrieved 24 August 2014.
6. "Soyuz launch site ready for first flight". ESA. 1 April 2011. Retrieved 23 August 2014.
7. Stephen Clark (21 August 2014). "Europe's Galileo navigation system set for expansion". Spaceflight Now. Retrieved 27 August 2014.
8. "VS02 Launch kit" (PDF). Arianespace. Retrieved 16 December 2015.
9. "VS04 Launch kit" (PDF). Arianespace. Retrieved 16 December 2015.
10. "Arianespace's Soyuz order to cover market until 2019". Spaceflight Now. 7 April 2014. Retrieved 24 August 2014.
11. "Arianespace Annual report 2013" (PDF). Arianespace. Archived from the original (PDF) on September 3, 2014. Retrieved 24 August 2014.
12. Arianespace (10 July 2014). "[Soyuz] Processing Highlights of Soyuz VS-08 Mission with O3b Satellites". Retrieved 24 August 2014.
13. "Soyuz launch site > Preparation area". Arianespace. Archived from the original on August 16, 2014. Retrieved 25 August 2014.
14. "Soyuz is in the launch zone for its August 21 mission to loft the first two Galileo FOC satellites". Arianespace. 18 August 2014. Retrieved 16 December 2015.
15. "Inspecting the Soyuz facilities". ESA. 24 September 2014. Retrieved 25 August 2014.
16. Daniel Scuka (3 April 2014). "Sentinel-1A launch timeline". ESA. Retrieved 19 August 2014.
17. Israël, Stéphane (19 March 2014). One-on-one with the chief executive of Arianespace. Interview with Stephen Clark. Spaceflight Now. Retrieved 25 August 2014.
18. Jonathan Amos (5 July 2014). "Ariane 6: Customers call the shots". BBC News. Retrieved 25 August 2014.
19. "Galileo IOV launch services contract signed". ESA. 16 June 2009. Retrieved 23 August 2014.
20. "Galileo program implementation begins". Thales Group. 19 January 2006. Retrieved 23 August 2014.
21. "Shipment of first two Soyuz to French Guiana readies Arianespace for the growth of its launch vehicle family". Arianespace. 7 November 2009. Archived from the original on November 8, 2013. Retrieved 23 August 2014.
22. "First Soyuz almost ready for launch from French Guiana". ESA. 4 May 2011. Retrieved 23 August 2014.
23. "ESA hands over keys to Soyuz launch site". ESA. 7 May 2011. Retrieved 23 August 2014.
24. "Countdown to Europe’s first Soyuz launch under way". ESA. 20 September 2011. Retrieved 23 August 2014.
25. "A new countdown for Soyuz' first flight from the Spaceport". Arianespace. 20 October 2011. Archived from the original on December 23, 2011. Retrieved 23 August 2014.
26. "Soyuz rocket prepares for first launch from French Guiana". The Guardian. 19 October 2011. Retrieved 23 August 2014.
27. "First two operational satellites in the Galileo constellation (Galileo FOC M1, SAT 5-6), the European Union's flagship program, successfully launched by Arianespace (VS 09 – Soyuz)" (Press release). 22 August 2014. Retrieved 16 December 2015.
28. "Galileo satellites experience orbital injection anomaly on Soyuz launch: Initial report" (Press release). 23 August 2014. Retrieved 16 December 2015.
29. "Team of teams". ESA. 8 September 2014. Retrieved 18 September 2014.
30. "Update on Galileo launch injection anomaly". 26 August 2014. Retrieved 27 August 2014.
31. "VS09 flight: Arianespace names independent inquiry commission" (Press release). 25 August 2014. Retrieved 16 December 2015.
32. Anatoly Zak; George Chambers (30 August 2014). "Galileo network: Complex failure scenario emerges". RussianSpaceWeb. Retrieved 3 September 2014.
33. "Frozen Propellant Line found to be Cause of Galileo Launch Failure". Spaceflight101. 26 September 2014. Retrieved 2 October 2014.
34. Иван Чеберко (19 September 2014). "В падении "Союз-СТ-Б" обвинили конструкторов НПО имени Лавочкина" [Lavochkin designers accused for a failure of "Soyuz-ST-B"] (in Russian). Izvestia. Retrieved 2 October 2014.
35. "Soyuz Flight VS09: Independent Inquiry Board announces definitive conclusions concerning the Fregat upper stage anomaly" (Press release). Evry: Arianespace. 8 October 2014. Retrieved 16 December 2015.
36. "Galileo satellite set for new orbit". SpaceRef. 10 November 2014. Retrieved 10 November 2014.
37. "Sixth Galileo satellite reaches corrected orbit". ESA. 13 March 2015. Retrieved 23 July 2015.
38. "Arianespace VSO2 mission: Soyuz STA orbits Pleiades 1A, ELISA and SSOT" (Press release). 17 December 2011. Retrieved 16 December 2015.
39. "Arianespace flight VS03: Soyuz ST-B orbits two Galileo IOV-2 satellites" (Press release). 12 October 2012. Retrieved 16 December 2015.
40. "Arianespace's fourth Soyuz mission a success: Pléiades 1B in orbit" (Press release). 1 December 2012. Retrieved 16 December 2015.
41. "Arianespace launch VS05 > Soyuz ST-B – O3b: Mission accomplished!" (Press release). 25 June 2013. Retrieved 16 December 2015.
42. "Arianespace successfully launches the Gaia scientific satellite" (Press release). 19 December 2013. Retrieved 16 December 2015.
43. "Arianespace boosts Sentinel-1A Earth observation satellite into orbit" (Press release). 3 April 2014. Retrieved 16 December 2015.
44. "Arianespace launches O3b satellites on Soyuz mission" (Press release). 10 July 2014. Retrieved 16 December 2015.
45. "VS09 Soyuz launch: Galileo satellites orbital injection anomaly" (Press release). Arianespace. 22 August 2014. Retrieved 16 December 2015.
46. "Arianespace launch a success, orbiting four more satellites in the O3b constellation" (Press release). 18 December 2014. Retrieved 16 December 2015.
47. "Arianespace expands Europe's Galileo global navigation satellite system with its latest Soyuz success" (Press release). 27 March 2015. Retrieved 16 December 2015.
48. "Arianespace successfully launches two satellites in the Galileo constellation" (Press release). Arianespace. 27 March 2015. Retrieved 16 December 2015.
49. "Arianespace's Latest Galileo Mission A Success: Soyuz Launcher Orbits Two More Satellites In The Constellation" (Press release). 17 December 2015. Retrieved 17 December 2015.
50. "Launch schedule". Spaceflight Now. Retrieved 2016-01-23.
51. "Sentinel-1". ESA. Retrieved 2016-01-23. Mass at launch is 2300kg
52. "Arianespace Starts The New Year With Record Operational Performance And Order Backlog" (Press Release). Arianespace. 2016-01-05. Retrieved 2016-01-23.
53. "Soyuz > Launch operations". Arianespace. Archived from the original on May 2, 2014. Retrieved 19 August 2014.
54. Stephen Clark (4 April 2014). "Mission Status Center - Soyuz Launch Report". Spaceflight Now. Retrieved 19 August 2014.