Ariane 5 is cleared for its launch with Yahsat Y1A and Intelsat New Dawn
Arianespace’s second heavy-lift flight of 2011 has been authorized for its April 22 liftoff following today’s launch readiness review at the Spaceport in French Guiana.
Originally scheduled for liftoff on March 30, this dual-payload mission with Yahsat Y1A and Intelsat New Dawn was delayed following an interruption of the final countdown when an incorrect displacement of one of the Vulcain 2 engine’s actuators was detected. The Ariane 5 was transferred back to the Spaceport’s Final Assembly Building on April 1, where the actuator replacement was implemented and the launch vehicle was returned to its flight configuration.
With today’s successful review, Ariane 5 is now cleared for its rollout tomorrow from the Final Assembly Building to the ELA-3 launch zone, where it will be readied for liftoff on Friday during a launch window that opens at 6:37 p.m. local time in French Guiana and continues to 7:41 p.m.
Ariane 5’s payload lift performance for this latest mission is nearly 10,065 kg., which includes a combined mass of 8,965 kg. for the Yahsat Y1A and Intelsat New Dawn spacecraft, plus the launcher’s dual-passenger dispenser system and satellite integration hardware.
Yahsat Y1A will be deployed first in the flight sequence, with its release scheduled at 27 min. into the mission – followed by Intelsat New Dawn’s separation from the Ariane 5 approximately 35 minutes after liftoff.
Based on Astrium’s Eurostar E3000 platform, Yahsat Y1A will be utilized by the Al Yah Satellite Communications Company to provide customized relay services for government and commercial sectors in the Middle East, Africa, Europe and Southwest Asia.
Intelsat New Dawn is the result of a joint venture with a consortium led by Convergence Partners and Intelsat, and was built by Orbital Sciences Corporation in Dulles, Virginia. It will be operated and marketed as a part of the global Intelsat fleet, bringing to 22 the number of Intelsat satellites serving Africa.