CSO 1

Soyuz STA/Fregat

Arianespace

Launch Status
Success

Mission

CSO 1

Type: Government/Top Secret

The CSO 1 (Composante Spatiale Optique 1) satellite is the first of three new-generation high-resolution optical imaging satellites for the French military, replacing the Helios 2 spy satellite series.

Location

Soyuz Launch Complex

Kourou, French Guiana

151 launches have been at this location.

Soyuz Launch Complex, Kourou, French Guiana

Rocket

Soyuz STA

Length: 46.3 meters
Diameter: 2.95 meters
First Launched: December 17, 2011

The 2.1a version includes conversion from analog to digital flight control system and uprated engines on the booster and the first stage with improved injection systems. The new digital flight control and telemetry systems allow the rocket to launch from a fixed rather than angled launch platform and adjust its heading in flight. A digital control system also enables the launch of larger commercial satellites with wider and longer payload fairings such as the ST-type fairing. These fairings introduce too much aerodynamic instability for the old analog system to handle. This stage continues to use the RD-0110 engine.

The 2.1a/ST version is sometimes called Soyuz ST-A.

The Soyuz STA rocket has been launched a total of 7 times with 7 successful and 0 failed launches.

Agency

Arianespace

Type: Commercial
Abbreviation: ASA
Administration: CEO: Stéphane Israël
Founded: 1980
Launchers: Ariane 5 | Vega
Spacecraft:
Country: FRA

Arianespace SA is a multinational company founded in 1980 as the world's first commercial launch service provider. It undertakes the production, operation, and marketing of the Ariane programme. Their vehicles launch exclusively from French Guiana in South America.

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