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中國悠久的曆史裏,戰爭不論在時間上或在社會上都占有相當重要的地位。就在這個戰鬥不斷的國家裏,克敵製勝的戰術研究相當興盛。
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歐空局局長在博客裏宣稱火星探測器 “半軟著陸”

(2016-10-21 09:52:47) 下一個

 

Woerners局長在博客裏宣稱著陸器“半軟著陸”(semi-soft touchdown),成功80%,整個ExoMars 2016項目成功96%(數學真好

Some people have asked about the success of the 2016 mission so far. For the number-crunchers among them the following observation may be helpful:

The importance of TGO and EDM can be described as 80% vs. 20%, respectively. Since we obtained at least 80% of the data during the descent, the overall success rate can be calculated as follows: 80+20*0.8 = 96%. All in all, a very positive result.

So to sum up where we stand, we have achieved a successful orbit insertion of TGO, ready to perform science and act as a relay station for ExoMars 2020 ground science. Not only that, but we have received a large quantity of data from the lander giving us crucial information to help us perform a successful landing of the next mission.


http://blogs.esa.int/janwoerner/ ... ing-is-an-art-form/

 
Exomars 2020還缺3億歐元的預算缺口,ESA需要在年底歐洲議會召開前給出故障分析,說服議員們使用同一套GNC的著陸器不會再出現類似問題。
PS:這可能也是局長Woerner為首的部分ESA官員在公開場合極力淡化著陸器硬著陸的原因。
But ESA will have to present their case at a meeting of the agency’s member states in December when officials ask European governments for around $330 million (300 million euros) to make up for a shortfall in funding for the construction of the ExoMars 2020 rover.

http://spaceflightnow.com/2016/10/20/last-data-from-schiaparelli-mars-lander-hold-clues-to-what-went-wrong/
 
 
Andrea Accomazzo(Spacecraft Operations Manager, ESA)關於故障初步分析的結論:超音速傘比原計劃提前~50s脫離,反推火箭隻工作了3s就關機(原計劃工作~30s)。技術人員還需要花費幾天時間分析TGO回傳的遙測數據,尋找故障原因。
PS:看起來問題出在GNC或者某些傳感器(壓力傳感器,加速度計,雷達高度計等)上,如果降落傘提前50s脫離,反推火箭點火時的速度可能會超出設計範圍,這可能導致其因燃燒不穩定而提前關機或整個著陸平台失穩,而後者可以解釋載波信號的消失。
 
 
歐洲這些官員真是臉皮厚啊,特別是那個Jan Wörner說什麽夏帕雷裏就是為了2020的計劃blabla,我們可以學習很多為未來打好基礎blabla,沒有信號你學個鬼啊,獵犬2號的失敗你們好好學了沒?看了都氣。上次玉兔故障了BBC可是冷嘲熱諷啊,我們好歹成功降落而且走起來了。
 
嗬嗬 歐洲是準備把第二成功著陸火星國家榮譽讓給中國了,中國 加油!

 

 

 

 

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