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Thu, Dec 15, 2011

Arianespace Preps Second Soyuz For Launch From Guiana

Vehicle Rolled Out Of Assembly Building For December 16 Launch

In what is becoming an increasingly familiar sight at the Spaceport, another Soyuz is now erected on the launch pad and ready to receive its multi-passenger payload for Arianespace’s Friday night mission from French Guiana.

Arianespace Soyuz Launch Facility

This vehicle – which is currently composed of the integrated first, second and third stages – rolled out of its MIK assembly facility today using the same horizontal transfer process employed for 1,780 other Soyuz flights performed with the workhorse medium-lift launcher. The Soyuz was then raised to its vertical position over the massive concrete launch pad, and suspended in place by a system of four support arms.

All is ready for the final launch campaign steps that are specific to the Russian-built vehicle’s operations in French Guiana: the integration of its “upper composite” containing the mission’s six satellite passengers, the Fregat upper stage and the ST-type payload fairing; which will be performed inside a purpose-built mobile service gantry.

This second Soyuz flight from the Spaceport will orbit the French Pléiades 1 and Chilean SSOT Earth observation satellites, both developed for civilian and defense image-gathering, along with four French Elisa micro-satellite demonstrators for defense-related electronic intelligence gathering. These payloads were integrated last week in the Spaceport’s S3B clean room, with the combined six-spacecraft cluster installed atop Soyuz’ Fregat upper stage using a dispenser system developed for Arianespace, followed by their encapsulation in the ST-type payload fairing.

The December 16 launch is scheduled for a liftoff at 2303 local time, and will deliver the payloads into circular orbits inclined 98 deg. Payload lift performance for the Soyuz is calculated at 4,800 pounds, which includes approximately 3,100 pounds for the Pleiades 1, ELISA and SSOT satellites, along with the mass of the payload dispenser and integration hardware.

FMI: www.arianespace.com

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