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2011年11月25日星期五

俄羅斯的火衛一探測活過來了!與失靈俄羅斯衛星的聯繫建立

俄羅斯的火衛一探測活過來了!與失靈俄羅斯衛星的聯繫建立
Russia’s Phobos probe is alive! Contact established with the failed Russian craft
- Wed, Nov 23, 2011
Translation by Aututmnson Blog
Artist impression of the Phobos-Grunt craft in orbit around Mars. Alas...
藝術家對繞火星軌道的火衛一咕噥飛船的印象,哎吔...

Two weeks ago, panic engulfed the Russian space agency after one of its dearest project, the $170 million Phobos-Grunt mission, which was set to land on Mars’ moon Phobos, collect samples and then return to moon, got stranded in orbit, completely blocked off from any kind of communication. Valiant efforts were made to restore the craft, but in vain. However, just recently, an Australian ground station has managed to establish contact with the probe, fueling hope for a possible salvaging.
兩星期前,恐慌吞噬俄羅斯航天局在其最親愛的項目之一 - 1.7億美元的火衛一咕噥的任務被設定在火星的月亮火衛一降落收集樣本和然後返回到月球 - 獲得在軌道上滯留、完全失去任何類型的通信後。勇士的努力作出以恢復飛船,但徒然。不過,就在不久前,一個澳大利亞地面站已能設法與探測器建立聯絡,燃起希望作可能的挽救。
Before the disastrous Nov. 9 launch from Russia’s favorite pad site, the Baikonur Cosmodrome in Kazakhstan, the Phobos probe was herald as a symbol of the nation’s interplanetery ambitions. When the probe eventually reached Earth’s orbit, however, engineers couldn’t fire its engines which should’ve propelled the craft in its months long voyage towards the red planet – they couldn’t even establish a com-link for that matter. Along with the Phobos craft, was China’s first interplanetary probe, Yinghuo 1, which piggy-bagged along with the Russian drone for a supposed drop off in Martian orbit – it too, of course, failed.

A glimmer of hope has risen recently after ESA’s tracking station in Perth, Australia, made contact with the probe late Tuesday. Before this event, Vitaly Davydov, Russia’s deputy space chief, was quoted as saying ”chances to accomplish the mission are very slim.” Expect to add at least a notch to those chances, now.
最近在澳州珀斯的歐洲航天局的跟踪站週二晚與探測器作出接觸後,一線希望上升。在此事件之前,俄羅斯的副空間行政主管維塔利達維多夫被引述所說:“完成任務的機會是非常渺茫。”預期現在添加了至少一個檔次給這些機會。
Currently, the Russian space agency is hard at work trying to kick-start the probe again, in cooperation with ESA and NASA, and have been doing so for the past two weeks, for that matter. To problem is, even with a firm re-establishment of contact with the Phobos-Grunt, its engineers can only do so much. If the problem is indeed related to a software issue, they might have a chance, however some experts believe the the failure was rooted in the hardware, which in space is impossible to fix.

Davydov said that if engineers can’t take control of the spacecraft, it could crash to Earth sometime between late December and late February. It’s trajectory can’t be calculated earlier than a day in advance. People should not worry, though, says Davydov, who claims the probability of the probe hitting a human being is virtually nil. This person was part of the 0.000001%.

There is one good thing that might come off this disaster – a tighter international collaboration for missions in the future. Seems like this huge setback for the Russian interplanetary program could motivate the country to accept the issued invitation to join U.S.-European space missions to Mars. The ExoMars Trace Gas Orbiter mission will launched in 2016 for a scheduled arrival at Mars nine months later. The mission will test out the technology necessary for entry, descent and landing for future, possibly manned, missions to Mars.

http://www.zmescience.com/space/russia-phobos-craft-probe-communication-established-431241233/

歐洲航天局首次收到俄羅斯火星探測器“回音”
2011年11月25日08:18
來源:新華網

  在杳無音訊13天后,正緩緩下墜的俄羅斯火星探測器在11月22日給歐洲航天局設在澳大利亞的一個地面測控站傳來了“回音”。專家認為,這說明該探測器還“活著”。

  總部位於法國巴黎的歐洲航天局23日發布的消息說,在格林尼治時間22日20點25分,歐航局設在澳大利亞西部的一個小型地面測控站,用一根直徑15米的天線首次收到源自俄“福布斯-土壤”探測器的遙感信號。當地專家解釋說,他們增設了信號接收設備,花了很長時間才為天線找到一個適合的角度,並最終收到信號。

  “得到証明俄探測器依然‘活著’的信號非常重要”,歐航局專家指出,這說明“福布斯-土壤”探測器的太陽能電池板很可能已成功打開,現在最重要的是設法使該探測器完全進入工作狀態。

  專家還認為,從目前狀況來看,先前向該探測器發出的“接通傳感器”的指令已得到執行,目前測控人員正准備向該探測器發出新指令,以期通過反饋的新遙感信號了解“福布斯-土壤”探測器的狀況。但來自俄羅斯方面的消息說,此次收到遙感信號並不意味著最終能將該探測器送入飛向火星的軌道。

  搭載中國首顆火星探測器“螢火一號”的俄“福布斯-土壤”探測器,於本月9日從哈薩克斯坦的拜科努爾發射場升空。在與運載火箭順利分離后,俄探測器的主發動機未能按設計方案自動實施兩次點火啟動,導致該探測器至今滯留在距地球僅二三百公裡的軌道,無法飛向火星。
http://scitech.people.com.cn/BIG5/16383806.html

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