Headlines > News > Japan's BSAT-3a is installed on its Ariane 5 launch vehicle

Japan's BSAT-3a is installed on its Ariane 5 launch vehicle

Published by Klaus Schmidt on Tue Aug 7, 2007 8:30 am
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(Arianespace) – The first of two payloads for Arianespace’s upcoming heavy-lift mission has been integrated on the Ariane 5 ECA, marking another milestone in preparations for the August 14 mission.

BSAT-3a was installed atop the Ariane 5’s core cryogenic stage during activity performed in the Final Assembly Building at Europe’s Spaceport in French Guiana.

Built by Lockheed Martin Commercial Space Systems, BSAT-3a will be operated by Japan’s Broadcasting Satellite System Corporation (B-SAT) to provide direct TV links for the entire Japanese archipelago. The spacecraft has the relay capacity for twelve 130-watt Ku-band channels (with eight operating at one time), and will be the sixth satellite carried by an Ariane vehicle for B-SAT Corporation.

BSAT-3a is based on Lockheed Martin’s A2100 A platform and will have a mass at liftoff of 1,980 kg. After deployment by Ariane 5, it will be positioned at an orbital slot of 110 deg. E. longitude. This spacecraft has a design life in excess of 13 years, and is to be the 38th Lockheed Martin payload launched by Arianespace.

With BSAT-3a’s integration, the Ariane 5 is now ready to receive its upper passenger: the Boeing-built SPACEWAY™ 3 satellite for Hughes Network Systems, LLC. SPACEWAY 3 is the larger of Ariane 5’s two payloads on the upcoming flight, with a liftoff mass of approximately 6,075 kg.

The August 14 mission will be the 33rd launch of an Ariane 5, and Arianespace’s third in 2007 for the heavy-lift vehicle. Total lift performance is 8,848 kg., which includes SPACEWAY 3 and BSAT-3a satellites, their installation hardware, and the SYLDA deployment system that enables Ariane 5 to accommodate two passengers on a single launch.

Arianespace plans a total of six Ariane 5 flights in 2007, of which two already have been performed. The company is accelerating the Ariane 5 launch rate to meet customer demand, building to a stabilized pace of eight Ariane 5 missions annually by 2009.

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