ILS Proton Successfully Launches the Yamal-401 Satellite Marking the 400th Proton Mission

BAIKONUR COSMODROME, Kazakhstan, December 15, 2014 – International Launch Services (ILS), a leader in providing mission integration and launch services to the global commercial satellite industry, successfully launched the Yamal-401 satellite into geosynchronous orbit today on an ILS Proton for JSC Gazprom Space Systems (Gazprom) of Moscow.  This was the landmark 400th mission for the Proton launch vehicle since its first flight in 1965.


Mission Success!

We have had a successful mission with the Proton M Breeze M rocket, carrying the Yamal-401  satellite built by Airbus. We have confirmation that the satellite separated from the vehicle on schedule at 4:17 am EST, or 09:17 GMT, approximately 9 hours and 1 minute after liftoff.
Everything occurred as planned with ignition, shutdown and separation of the Proton’s first three stages. Then the Breeze M upper stage with the satellite continued the mission, igniting four times, and then releasing the satellite into transfer orbit.


Yamal-401 | Third Burn

We have confirmed that the Breeze M upper stage has successfully completed its 3rd burn, as well as jettisoning its additional propellant tank. The vehicle is now in a 5-hour coast period, during which we will have nothing to report. The 4th burn is scheduled to start around 4:03 am EST or 09:03 GMT. Separation of Yamal-401 spacecraft is scheduled to follow the 4th burn completion by about 1 minute.


Yamal-401 | Second Burn

As the Breeze M upper stage of our Proton M rocket continues its climb into space with the Yamal-401 satellite onboard, we have received confirmation that the 2nd burn of the upper stage occurred and shut down as scheduled.
The next events are scheduled for about 2 hours from now. The Breeze M upper stage will ignite for a 3rd time and burn for approximately 18 minutes; after that the additional propellant tank will be jettisoned. All this will happen in a span of almost 20 minutes while the vehicle is again out of range of a ground station. We should reacquire the vehicle shortly after the APT is jettisoned.


Yamal-401 | First Burn

We have received confirmation of completion of the first burn. The vehicle is now scheduled to be out of range for about an hour, after which we will hear confirmation of the second burn.


Yamal-401 | Stage Separations

We had a successful liftoff about 11 minutes ago of the ILS Proton M Breeze M rocket, which is carrying the Yamal-401 satellite onboard. The three stages of the Proton vehicle have performed as planned, and it is up to the Breeze M upper stage to complete the mission. The upper stage has begun its first burn, which is scheduled to last about 5 minutes.


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