Galileo 9 & 10 – Soyuz Mission [video]

Following liftoff from the Guiana Space Center, the powered phase of the lower three Soyuz stages will last about nine minutes. The third stage of the launcher will then be separated from the upper composite, comprising the Fregat upper stage and the Galileo satellites 9 & 10. The three lower stages and the fairing will fall back into the sea.

After a first burn, the upper composite is spun up during a ballistic phase lasting about 3 hours and 15 minutes. Then, Fregat will ignite its own engine to bring the upper composite to a transfert orbit above the Earth. At a pre-determined point of this orbit, Fregat will ignite a second burn lasting 4 minutes to reach the circular orbit of separation.

At the end of the mission, the Fregat upper stage will be passivated. The Galileo satellites will then lower their altitude in order to reach their operational orbit.

 
 

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