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Arianespace Flight VS25 - CSO-2 (EN)

For its 10th and final launch of the year — and the fifth in 2020 with the Soyuz medium launcher — Arianespace will send the CSO-2 Earth observation satellit...

Soyuz Flight VS25

For its 10th and final launch of the year — and the fifth in 2020 with the Soyuz medium launcher — Arianespace will send the CSO-2 Earth observation satellite, intended for defense and security applications, into Sun-synchronous orbit. CSO-2 will be launched for the French CNES (Centre National d’E...

CSO-2

Overview

Destination: Sun-Synchronous Orbit
Mission: Government/Top Secret

Sun-Synchronous Orbit Soyuz Launch Complex Kourou, French Guiana

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

Soyuz STA

Family: Soyuz
Configuration: Fregat

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.

Specifications
  • Stages
    3
  • Length
    46.3 m
  • Diameter
    2.95 m
  • Fairing Diameter
  • Launch Mass
    312 T
  • Thrust
Family
  • Name
    Soyuz STA
  • Family
    Soyuz
  • Variant
    Fregat
  • Alias
  • Full Name
    Soyuz STA/Fregat
Payload Capacity
  • Launch Cost
  • Low Earth Orbit
    7020 kg
  • Geostationary Transfer Orbit
    2810 kg
  • Direct Geostationary
  • Sun-Synchronous Capacity
    4230 kg

Arianespace

Circle Image
CEO: Stéphane Israël Founded: 1980 Successes: 142 Failures: 8 Pending: 32

Agency Type: Commercial

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.

INFO WIKI

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Kourou, French Guiana

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