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Soyuz ST-B lofts another set of O3b satellites

4 Apr 2019, 17:05 UTC
Soyuz ST-B lofts another set of O3b satellites
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The Arianespace Soyuz ST-B rocket has launched the next set of four O3b communication satellites towards orbit on Friday. The spacecraft are heading to a constellation that is already populated by 16 of the birds controlled by O3b Networks. Lift off from the European Spaceport in Kourou, French Guiana occurred at 17:03 UTC.
This launch is designated as Soyuz Flight VS22 in Arianespace’s numbering system, denoting the 22nd flight of the Russian-built launch vehicle since its introduction at the Spaceport in October 2011.
By performing the 22nd Soyuz flight from the CSG, Arianespace is supporting — for the fifth time — SES in the expansion of its successful Non-Geostationary Satellite Orbit (NGSO) satellite constellation.
The more powerful Soyuz-ST configuration is the standard version launched from French Guiana, with the additional performance provided by the Soyuz ST-B variant – including a Fregat-MT upper stage.
The Soyuz ST-B in launch preps at CSG – via Arianesapce
The Soyuz-2 was developed from the older Soyuz models and features digital flight control systems and modernized engines. It first flew in 2004.
Two variants are currently in service; the Soyuz-2-1a, and the Soyuz-2-1b which features an RD-0124 third stage engine which provides additional thrust. The ...

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