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  • Satellite Evolution

Flight ST33: Arianespace to serve OneWeb’s ambitions by reaching a key milestone with 254 satellites

Flight ST33, the fifth commercial mission performed by Arianespace and its Starsem affiliate from the Vostochny Cosmodrome, will put 36 of OneWeb’s satellites into a near-polar orbit at an altitude of 450 kilometers.

The mission will have a total duration of three hours and 51 minutes and will include nine separations of four satellites, which will raise themselves to their operational orbit. This eighth launch to the benefit of OneWeb will bring up to speed Arianespace’s operations this year, and will raise from 218 to 254 the number of satellites deployed for the global telecommunications operator.


This launch will mark the completion of OneWeb’s ‘Five to 50’ ambition to bring into orbit the satellites required to enable connectivity services to the 50th parallel and above by years end which includes Canada, U.K., Northern Europe, Alaska and Arctic regions. OneWeb’s launch campaign will continue thereafter as it works toward delivering global service next year. OneWeb’s constellation will deliver high-speed, low-latency connectivity services to a wide range of customer sectors including aviation, maritime, backhaul services, as well as governments, emergency response services and more. Central to its purpose, OneWeb seeks to bring connectivity to every place where fiber cannot reach, and thereby bridge the digital divide.


Once deployed, the OneWeb constellation will enable user terminals that are capable of offering 3G, LTE, 5G and Wi-Fi coverage, providing high-speed access globally – by air, sea and land.


OneWeb Satellites, a joint venture between OneWeb and Airbus Defence and Space, is the constellation’s prime contractor. The satellites were built thanks to its leading-edge satellite manufacturing process that can build up to two satellites a day on a series production line dedicated to the assembly, integration, and testing of the satellites.

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