Vega C, or Vega Consolidation, is a European expendable, small-lift launch vehicle developed and produced by Avio. It is an evolution of the original Vega launcher, designed to offer greater launch performance and flexibility.

Vega C
Model of Vega C at Paris Air Show 2015
FunctionSmall-lift launch vehicle
ManufacturerAvio
Country of originEuropean multi-national[a]
Size
Height34.8 m (114 ft)
Diameter3.4 m (11 ft)
Mass210,000 kg (460,000 lb)
Stages4
Capacity
Payload to SSO
Altitude700 km (430 mi)
Orbital inclination90°
Mass2,300 kg (5,100 lb)
Payload to polar orbit
Altitude500 km (310 mi)
Orbital inclination88°
Mass2,250 kg (4,960 lb)
Payload to equatorial elliptical orbit
Altitudeapogee: 5,700 km (3,500 mi)
perigee: 250 km (160 mi)
Orbital inclination
Mass1,700 kg (3,700 lb)
Associated rockets
FamilyVega
Comparable
Launch history
StatusActive
Launch sitesGuiana Space Centre, ELV
Total launches2
Success(es)1
Failure(s)1 (VV22)
First flight13 July 2022
Last flight21 December 2022
First stage – P120C
Height13.38 m (43.9 ft)
Diameter3.4 m (11 ft)
Gross mass155,027 kg (341,776 lb)
Propellant mass141,634 kg (312,250 lb)
Maximum thrust4,323 kN (972,000 lbf)
Specific impulse279 s (2.74 km/s)
Burn time135.7 seconds
PropellantHTPB / AP / Al
Second stage – Zefiro 40
Height8.07 m (26.5 ft)
Diameter2.4 m (7 ft 10 in)
Gross mass40,477 kg (89,237 lb)
Propellant mass36,239 kg (79,893 lb)
Maximum thrust1,304 kN (293,000 lbf)
Specific impulse293.5 s (2.878 km/s)
Burn time92.9 seconds
PropellantHTPB / AP / Al
Third stage – Zefiro 9
Height4.12 m (13.5 ft)
Diameter1.9 m (6 ft 3 in)
Gross mass12,000 kg (26,000 lb)
Propellant mass10,567 kg (23,296 lb)
Maximum thrust317 kN (71,000 lbf)
Specific impulse295.9 s (2.902 km/s)
Burn time119.6 seconds
PropellantHTPB / AP / Al
Fourth stage – AVUM+
Height2.04 m (6 ft 8 in)
Diameter2.18 m (7 ft 2 in)
Empty mass698 kg (1,539 lb)
Propellant mass492 kg (1,085 lb) of N2O4, 248 kg (547 lb) of UDMH
Powered by1 × MEA
Maximum thrust2.42 kN (540 lbf)
Specific impulse315.8 s (3.097 km/s)
Burn timeUp to 924.8 seconds (up to five burns)[b]
PropellantUDMH / N2O4

Approved for development by the European Space Agency (ESA) in December 2014, Vega C was designed to accommodate larger institutional payloads and compete effectively in the commercial launch market.[1] Initially marketed and operated by Arianespace, the ESA decided in August 2024 to empower Avio to directly commercialize Vega C and seek non-governmental customers. This transition is anticipated to be complete by the end of 2025.[2][3]

Vega C, like its predecessor, is designed to launch small satellites for scientific and Earth observation missions to polar and sun-synchronous low Earth orbits.[4] The reference Vega C mission places a 2,300-kilogram (5,100 lb) spacecraft into a 700-kilometre (430 mi) polar orbit, representing an 800-kilogram (1,800 lb) or 60% increase over the original Vega.  

Named after Vega, the brightest star in the constellation Lyra,[5] the rocket is a single-body launcher (no strap-on boosters) with three solid and one liquid stage. While Avio of Italy leads the Vega program, contributions come from companies in Belgium, France, the Netherlands, Spain, Switzerland and Ukraine.

Vega C features several key advancements over the original Vega. The first stage is replaced by the more powerful P120C, which is also used as a booster on the Ariane 6 launcher, allowing development costs to be shared. The second stage is the upgraded Zefiro 40. While the AVUM+ upper stage remains largely unchanged, it carries a larger propellant load. The third stage, Zefiro 9, remains the same.[6]

Vega rockets are launched from the ELV launch pad at the Guiana Space Centre. The Vega C's maiden flight on 13 July 2022 successfully delivered LARES 2 and six other satellites to orbit.[7] However, the second launch on 21 December 2022 experienced a failure of the Zefiro 40 second stage, resulting in the loss of two Pléiades Neo Earth-imaging satellites.[8] Consequently, the next launch was delayed until late 2024 to allow for the rocket motor nozzle to be redesigned.[9]

Specifications

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Stages

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Main suppliers

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Building the Vega is a European multi-national effort led by Avio of Italy, which manages Vega development and oversees production as the prime contractor, and also builds the Zefiro 40, Zefiro 9 and AVUM+ stages. Europropulsion, a 50-50 joint venture of Avio and ArianeGroup, builds the P120C first stage. Dutch Space of the Netherlands builds the interstage between the first and second stages. CIRA builds the interstage between the second and third stages. RUAG of Switzerland builds the payload fairing. SABCA of Belgium builds the thrust vector control systems.[10]

Payload capacity

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Arianespace had indicated that the Vega C launcher is able to carry 2,300 kg (5,100 lb) to a circular polar orbit at an altitude of 700 km (430 mi).[11]

Because of its ability to carry heavier payloads, RUAG Space of Switzerland had to redesign the fairing of the Vega C.

The fairing is 3.3 m (11 ft) in diameter and over 9 m (30 ft) tall, which offers nearly double the payload volume of the original Vega, which had a fairing of 2.6 m (8 ft 6 in) in diameter and over 7.8 m (26 ft) tall.[12]

Ascent timeline

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This timeline of a typical Vega C ascent profile and associated sequence of events includes two AVUM+ boosts. However, the flight profile is optimized for each mission.

Future

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Building on Vega C, the Vega E (or Vega Evolution) is a further development of the Vega family with the Zefiro 9 and AVUM+ third and fourth stage replaced with a single upper stage powered by liquid oxygen and liquid methane. This design would enable multiple satellites to be launched into different orbits on a single launch. The engine for this new upper stage, the M10, was the result of a collaboration between Avio and Chemical Automatics Design Bureau (KBKhA).[13][6] Successful testing of the engine was conducted in 2022,[14] and the maiden flight of Vega E is anticipated in 2027.[15]

Avio also plans to develop a new methane-fueled first-stage engine with plans to introduce a partially reusable rocket to eventually replace the Vega.[16]

List of launches

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Launch history

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Flight Date / time (UTC) Rocket Launch site Payload Payload mass Orbit Customers Launch
outcome
VV21 13 July 2022
13:13:17[17]
Vega C ELV
  • LARES 2
  • ALPHA
  • AstroBio CubeSat
  • CELESTA
  • GreenCube
  • MTCube-2
  • TRISAT-R
350 kg (770 lb) MEO Success
First flight of Vega C
VV22 21 December 2022
01:47:31[18]
Vega C ELV Pléiades Neo 5 & 6 1,977 kg (4,359 lb) SSO Airbus Defence and Space Failure
Earth observation satellites.[19] Failure due to loss of pressure of the Zefiro 40 second stage.[20]

Future launches

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See also

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Notes

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  1. ^ The lead manufacturer is from Italy, but the rocket has significant contributions from companies based in Belgium, France, Netherlands, Spain, Switzerland and Ukraine.
  2. ^ a b Engines can burn up to 612.5 seconds per burn and can burn up to five times. Maximum cumulative burn time of 924.8 seconds.

References

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