Vega (rocket)

Vega (rocket)
source
Name	Vega
Caption	A Vega rocket on the launchpad at the Guiana Space Centre.
Function	Small-lift launch vehicle
Manufacturer	Avio
Country origin	ESA member states
Height	30 m
Diameter	3 m
Mass	137,000 kg
Status	Active
Launches	23
Success	21
First	13 February 2012
Last	28 June 2024
Payloads	LARES, Proba-V, ADM-Aeolus
Sites	Guiana Space Centre, ELA-1

Vega (rocket). Vega is a four-stage, solid-propellant launch vehicle developed by the European Space Agency (ESA) and manufactured by the Italian company Avio. Designed as a small-lift system, it provides Europe with independent access to space for satellites weighing between 300 kg and 2,300 kg, primarily into Sun-synchronous orbit and low Earth orbit. The program was initiated to complement the heavier Ariane 5 and later Ariane 6 rockets, forming a versatile family of European launch systems operated from the Guiana Space Centre in French Guiana.

Overview

The Vega rocket was conceived to fill a gap in the European launch service portfolio for lighter scientific and Earth observation payloads. Its development was formally approved by the European Space Agency in 1998, with major contributions from Italy, France, Spain, Belgium, the Netherlands, Switzerland, and Sweden. The vehicle's first successful launch in 2012 deployed multiple satellites, including the LARES laser relativity satellite and the ALMASat-1 microsatellite. Operated by Arianespace, Vega missions have supported key European programs like Copernicus and have launched spacecraft for institutions including the Italian Space Agency and the Japan Aerospace Exploration Agency.

Development

The Vega program emerged from earlier Italian studies, such as the Zefiro solid rocket motor technology demonstrator, which began in the 1980s. The European Space Agency officially sanctioned the project at its ministerial council in 1998, with Avio (then FIAT Avio) appointed as prime contractor. Development faced challenges, including the catastrophic 2020 failure of flight VV17, which led to a major redesign of the rocket's upper stage. Key milestones included successful static fire tests of the P80 first stage at the Guiana Space Centre and the qualification of the Zefiro 23 and Zefiro 9 motors. The program's management involved close collaboration between ESA, the Italian Space Agency, and the CNES.

Design and specifications

Vega is a single-body launcher approximately 30 meters tall with a diameter of 3 meters, comprising three solid-propellant stages and a liquid-propellant upper stage for precise orbital insertion. The first stage is the P80, containing 88 tons of hydroxyl-terminated polybutadiene (HTPB) propellant and derived from technology used for the Ariane 5's boosters. The second and third stages are the Zefiro 23 and Zefiro 9, respectively. The fourth stage is the restartable AVUM (Attitude and Vernier Upper Module), which uses UDMH and N2O4 propellants and houses the vehicle's avionics. The fairing, built by RUAG Space, protects payloads during ascent. The rocket can deliver about 1,500 kg to a 700 km Sun-synchronous orbit.

Launch history

The maiden flight, designated VV01, lifted off from ELA-1 at the Guiana Space Centre on 13 February 2012, successfully deploying nine satellites. Notable subsequent missions include VV02 carrying the Proba-V satellite in 2013, VV05 with the LISA Pathfinder in 2015, and VV13 launching the ADM-Aeolus wind-mapping satellite for ESA in 2018. The rocket suffered its first failure in July 2019 during the VV15 mission, which was carrying the Falcon Eye 1 satellite for the United Arab Emirates Space Agency. A second failure occurred in November 2020 on flight VV17, resulting in the loss of the SEOSat-Ingenio and TARANIS satellites. The improved Vega C variant debuted in July 2022, though it also experienced a launch failure in December 2022.

Variants

The primary evolution is the Vega C (Consolidation), which features a more powerful first stage called the P120C, a larger Zefiro 40 second stage, and an enlarged fairing. The P120C is also used as a booster for the Ariane 6. A further development, the Vega E (Evolution), is planned to replace the third and fourth stages with a new liquid oxygen-methane upper stage called the M10, aiming for increased performance and flexibility. The original Vega configuration is sometimes referred to as Vega Classic. Studies for a reusable first stage, potentially using a Falcon 9-like vertical landing, have also been conducted under the Themis program.

Operators and launch sites

The Vega family is commercially operated by the French company Arianespace, which markets launch services globally. The prime industrial contractor is the Italian firm Avio, responsible for integration and production. All launches to date have originated from the ELA-1 launch complex at the Guiana Space Centre in French Guiana, a site operated by the CNES and ESA. The European Space Agency provides program oversight and coordinates contributions from its member states, including the Italian Space Agency, which holds a leading role. The Vega C and future Vega E are intended to maintain this operational model from the same launch site.

Category:Launch vehicles Category:European Space Agency Category:Spacecraft launched in 2012