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Ariane 5 Upper Stage Fails To Deliver Twin Birds To GEO
Kourou (AFP) July 12, 2001 A European and a Japanese satellite have been placed in to the wrong orbit following a malfunction in the last stage of their launch by an Ariane-5 heavy rocket, Arianespace chairman and CEO Jean-Marie Luton said Friday. Liftoff from Europe's Spaceport in Kourou, French Guiana, at 2358 GMT Thursday, seemed normal but due to "a propulsion problem", the final stage of the rocket failed to place its two satellites on the designated trajectory. Therefore rather than being placed into their planned geostationary orbits the two satellites are in much lower orbits. "We are apologising to our clients," said Luton, who was speaking in Kourou in a direct link up with the headquarters of Arianespace, the European Space Agency's marketing arm, at Evry, near Paris. The major item on the payload was a 3.1-tonne European satellite, Artemis, (Advanced Relay and Technology Mission Satellite) that was to provide high-speed linkage between scientific and Earth-monitoring satellites and provide mobile phone coverage in Europe, North Africa and the Middle East. The other package was a 1.3-tonne satellite, BSAT-2b, launched for its Japanese operator BSAT, designed to provide satellite TV across the Japanese archipelago. Analysis was underway to discover whether the satellites could be saved, he added. The experts were more optimistic about salvaging the US Artemis satellite which has two reignitable engines while the Japanese satellite has only one engine which can be switched on only once. Even if they were nudged back into the correct orbit the satellites are likely to have a life-span far lower than the planned ten years. Preliminary investigative results were to be released later Friday. An expert at the Evry centre said that the second stage of the launch, where the problem occurred, was actually a much simpler procedure than the first rocket stage. Most previous problems encountered by Ariane flights have been linked to the original launcher section. It was the seventh commercial launch of an Ariane-5, a heavyweight successor to the veteran Ariane-4. The Japanese satellite was part of a constellation of BSAT satellites, for which there are 16 million subscribers in Japan. Arianespace has a full orderbook for satellite and other launches, with 43 satellites to be placed in orbit and nine automatic transport vehicles to be sent to the orbiting International Space Station (ISS) in coming years. The next launch of a European rocket is fixed for August 23, when an Ariane-4 is due to send up the international Intelsat-902 telecoms satellite. Related Links Arianespace SpaceDaily Search SpaceDaily Subscribe To SpaceDaily Express
Evans And Russia's Oil Patch
Moscow (UPI) Dec 13, 2005Former U.S. Commerce Secretary Don Evans, who is a close friend of U.S. President Bush, is reported to have been offered the job of chairman of the Russian state oil company Rosneft ahead of its initial public offering next year. Bringing Evans on board may help improve the oil giant's damaged reputation in the wake of the Yukos affair, but is it enough for investors? |
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