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Ariane 5's upper payload completes its integration at the Spaceport
by Staff Writers
Kourou, French Guiana (SPX) Sept 01, 2011

File image.

Integration of the upper portion of Ariane 5's dual-passenger "stack" has been completed, with the Arabsat-5C satellite and SYLDA dispenser system now encapsulated inside the launcher's payload fairing in preparation for the September 9 Arianespace mission from French Guiana.

This encapsulation occurred at the Spaceport's Final Assembly Building, adjacent to where the Ariane 5 is waiting to receive Arabsat-5C and the mission's co-passenger, SES-2.

The integration process' next step will occur when SES-2 is positioned on the launcher's core section as the lower payload, allowing the "stack" to be completed with installation of the Arabsat-5C/SYLDA/fairing combination atop it.

During the flight sequence, the payload fairing will be jettisoned first, followed by deployment of Arabsat-5C. The SYLDA dispenser is then released, allowing the subsequent separation of SES-2 to complete the Arianespace mission.

Ariane 5 is the launch services industry's workhorse vehicle of reference, with a demonstrated capability to perform efficient missions with dual satellite payloads.

For the upcoming flight, Arabsat-5C is the mission's larger payload, with an estimated liftoff mass of 4,630 kg. SES-2 will weigh approximately 3,152 kg. at launch.

The multi-mission Arabsat-5C was built for the Arab Satellite Communications Organization (Arabsat), and is to provide capacity in both the C- and Ka-bands for a range of communications services.

To be operated from Arabsat's 20 deg. East orbital position, this spacecraft was manufactured in a joint effort by two European companies: EADS Astrium and Thales Alenia Space.

SES-2 was produced by Orbital Sciences Corporation of the U.S., and is a hybrid C- and Ku-band spacecraft for SES WORLD SKIES that will serve North America from an orbital slot of 87 deg. West.

In addition to its communications relay duties, SES-2 is carrying the Commercially Hosted InfraRed Payload (CHIRP) for the U.S. Air Force - which integrates a wide-field of view sensor in the satellite.

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