主题:印尼卫星在西昌升空未能进入预定轨道 -- acdo
Thales Alenia Space Chief Executive Reynald Seznek said Sept. 9 the satellite has enough onboard fuel remaining to provide 10 years of full service, or two thirds of its 15-year
调查委员会11月中给结论
Long March Mishap Findings Due By Mid-November
By Peter B. de Selding
An independent Chinese board of inquiry investigating the Aug. 31 under-performance of the Long March 3B rocket is expected to deliver its conclusions by mid-November, with the possibility that the vehicle will be returned to flight as early as late this year, China Great Wall Industry Corp. officials said Sept. 8.
In interviews here during the World Satellite Business Week conference organized by Euroconsult, China Great Wall officials said the Long March 3B placed Indonesia’s Palapa-D telecommunications satellite into a too-low orbit when one of its two identical upper-stage engines failed to deliver the necessary thrust.
They said the engine did not shut down. Instead, for reasons the inquiry board has been assigned to determine, the motor operated at a lower-power level during its second ignition.
Palapa-D builder Thales Alenia Space has recovered the satellite and on Sept. 9 announced that the spacecraft had been placed into final geostationary position using its own thrusters. Thales Alenia Space Chief Executive Reynald Seznek said Sept. 9 the satellite has enough onboard fuel remaining to provide 10 years of full service, or two thirds of its 15-year contractual lifetime.
China Great Wall Industry Corp. Vice President He Xing said the board of inquiry is composed of people who have no direct involvement in the design of the rocket. He said the results would be made available to customers and to the global satellite-insurance community as soon as they are available.
Two identical motors power the upper stage of the Long March 3B rocket. The same stage is used for the Long March 3A and 3C vehicles, meaning that these, too, will be grounded pending the results of the inquiry.
China Great Wall officials said the upper stage has flown more than 25 times without incident, suggesting that it is not a design issue that caused the Aug. 31 malfunction. “But the truth is we will let the inquiry board make the determination,” He Xing said. “For now, we don’t know what they will find. They will have complete freedom in their work.”
Another China Great Wall official said the company hopes that, if the failure is traced to a straightforward workmanship issue, the vehicles can be cleared to return to flight as early as the end of this year.
- 相关回复 上下关系8
压缩 3 层
🙂这个结果是发射星箭分离后的结果 李诗雅 字172 2009-09-05 00:26:31
🙂NORAD的TLE数据 1 李诗雅 字681 2009-09-05 00:24:33
🙂按别人的计算,要用好几年轨道维持的燃料 李诗雅 字115 2009-09-01 19:49:40
🙂果然是最后10年寿命
🙂我捡重要的翻译一下 donkeyking 字726 2009-09-10 16:20:52
🙂别人是谁? kernelh 字194 2009-09-04 07:04:32
🙂我没太高法国什么 4 李诗雅 字1857 2009-09-05 00:52:39
🙂法国人宣布推进剂的消耗是乐观的(最佳化的) PBS 字467 2009-09-06 23:52:44