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在最后着陆阶段,过大推力使“维克拉姆”号失控

来源:  BBSGood社区    时间:2019-09-09 11:30:08   关注:125   转发


 Extra brake thrust may have sent Vikram out of control in home stretch


在最后阶段,过大的制动推力使“维克拉姆”号失控


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BENGALURU: When silence descended on the Isro mission control and millions of Indian homes minutes before Vikram was to touch down on the Moon at 1.53am on Saturday, many thought the lander had too little thrust to brake to a halt. A day later, Isro scientists are looking at whether Vikram had too much braking thrust, which spun it out of control.


班加罗尔:“维克拉姆”号原计划在周六凌晨1点53分着陆,最后几分钟,ISRO控制中心和无数印度家庭陷入沉默,许多人认为着陆器的推力太小,刹不住。一天后,ISRO的科学家们研究“维克拉姆”号的制动推力是否太大,导致其失控。


"We thought one of the thrusters may have underperformed," said an Isro scientist. "But after some preliminary analysis, it looks like a thruster overperformed."


ISRO的一位科学家表示:““我们认为其中一个推进器可能表现不佳,经过一些初步分析,似乎是推进器运转过度了。”


Descending from its orbit 30km from the Moon, Vikram had achieved perfect roughbraking for 10 minutes, reducing its velocity from 1,680 metres per second to 146 metres per second. Soon after the fine-braking that signalled Vikram's last 5km descent to the Moon, mission control lost contact with the lander.


“维克拉姆”号从距月球30公里的轨道上降落,在10分钟内实现了完美的制动,速度从1680米每秒降至146米每秒。“维克拉姆”号最后5公里下降时精细制动,不久之后,地面控制中心与着陆器失去了联系。


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印度时报读者的评论:


译文来源:三泰虎 http://www.santaihu.com/48388.html   译者:Jessica.Wu


外文:https://timesofindia.indiatimes.com


Dilip • Victoria • 6 hours ago


Every failure is a lesson to perfection.


每一次失败都是为通向完美而积累经验。


 


Arjun Prabhu • 5 hours ago


Every failure is a stepping stone to success !. I am sure our scientists will use this experience for much greater success


失败是成功的垫脚石!


我相信我们的科学家会得到经验教训,以后会取得更大成功的


 


Dean • traveller • 6 hours ago


I am no scientist, but a question aries why we lost contact? brakes can send the vehicle out of control. but loss of communication?


我不是科学家,为什么会联?


刹车会使其失去控制。失联又是怎么回事?


 


Bhai Sahab


Hats off to the effort. Thats it !! ISRO Well Done.


向ISRO的努力致敬。ISRO做得好.


 


Aam aadmi


Aim high to challenge yourself


树立远大目标,挑战自我


 


Sanmesh p• vadodara


USA (12 Attempts) Russia (7 Attempts) & China (Attempts)


India’s First Attempt is 95% Successful !!!


Proud of our ISRO Scientists


美国尝试了12次,俄罗斯尝试了7次,中国也尝试了7次


印度首次尝试就成功了95%!


为我们的ISRO科学家感到骄傲


 


nanksn • Planet earth


ISRO''s track record is much better than that of many advanced countries..and they shall overcome this also asap.


ISRO的表现比许多发达国家要好得多。他们会尽快克服困难的。


 


Anwar Hussain Indian• 5 hours ago


Learn from the mistakes, let's do it again guys. I love ISRO.


从错误中吸取教训,再来一次,伙计们。爱你,ISRO。


 


Aam aadmi• 1 hour ago


We can we will


我们能做到,我们会成功的


 


Dilip De • 5 hours ago


What caused the signal loss? It is a mystery. I hope no sabotage is there.


是什么导致失联的?这是一个谜。希望没有人在上面蓄意搞破坏。


 


Rajeev Goel• 4 hours ago


This is the second time in as many years that the mission got aborted because of communication failure. Our geo satellite was lost because of last minute signal loss. Is this jamming of signals by China that resulted in this fiasco.


这是第二次因通讯中断而流产。是中国信号的干扰导致了这次失败吗?


 


Murti Kavuri • Hyderabad • 28 mins ago


Few advises from a scientist for future programs



  1. No politicians to attend ISRO during mussion. They distract the jobs.

  2. No publicity till the mission is over.


3.no media to be entertained during mission.


对未来项目的一些建议(来自一位科学家):



  1. 禁止印度政客在执行任务期间进入ISRO参观。会分散注意力的。

  2. 在任务结束之前不要公开。

  3. 执行任务期间不接待任何媒体。


ARUP MALLIK• 22 mins ago


This is a thought set of advises. I also subscribe this and am sure many Indians feel the same.


好建议。我也同意,相信许多印度人也有同感。


 


Gurcharn Sandhu • 1 hour ago


Loss of communication implies extensive damage to the lander Vikram. Normally such extensive damage could only be expected if Vikram had crash-landed on the moon. But ISRO has reported the Lander to be still 2.1 km above the moon surface at the time of communication loss. It is just possible that there may be a flaw in the instant to instant height calculation software. Lander may have reached the moon surface at high speed and crashed when the computation software still showed a distance of 2.1 km to the moon surface. It needs to be investigated.


通讯中断意味着“维克拉姆”号着陆器受到严重损坏。正常情况下,只有迫降了,才会造成如此严重的损坏。ISRO报告称,在通讯中断时,着陆器仍在月球表面2.1公里以上。可能是瞬间高度计算软件存在缺陷。着陆器可能已经急速抵达月球表面了,当计算软件仍然显示距离月球表面2.1公里,这时候着陆器其实已经坠毁了。好好调查一下吧。


Ajay Gupta• 47 mins ago


Your guess makes a good sense buddy. I also think so.


伙计,你的猜测很有道理。我也这么认为。


ONE LINE CHALLENGER• 1 hour ago


Excellent point. Who wrote the code? Infy? Or TCS?


说得好。这软件的代码是谁写的?印孚瑟斯?还是塔塔 ?


 


S Suri • NA • 2 hours ago


Person responsible for controlling the thrust knew pm modi was watching from the gallery. Maybe he got nervous at a crucial moment. No VIPs should be allowed in delicate operations.


负责控制推力的人知道莫迪总理正在走廊里观看。也许他在关键时刻紧张了。在精细操作期间应该禁止贵宾观看。


 


Robert Samuel chandrasekaran• 2 hours ago


Not a failure.so far so good.This is a learning curve.70 percent of moon landing is a failure according to NASA.So let us not get disheartened.


据NASA称,70%的登月尝试是失败的。所以,我们不要灰心丧气。


 


Ishaq• idupula paya • 2 hours ago


when Modi consoled by hugging, Dr.Sivan,yesterday, I, got the same feeling as if a father is consoling his failed child in an exam.


We are fortunate to have a statesman and a leader like Modi ji.


昨天,当莫迪拥抱安慰ISRO主席时,有一种父亲在安慰考试不及格的孩子的感觉。


我们很幸运有莫迪这样的政治家和领导人。


 


Deviprasad Nayak • 1 hour ago


India is not doing any Fake Missions like US did in 1969 when Americans landed on Moon.


印度没有像美国1969年登月时那样作假。


shakcrazy1• 1 hour ago


how u know bro....r u from moon


兄弟,你怎么知道的,你是从月球来的吗?


 


Luminary • Bangalore • 1 hour ago


Don''t celebrate before success. Don''t create hype when you have critical missions which can go either way. Success and failure are common in these cases.


成功之前不要庆祝。执行重要任务时,不要大肆宣传,因为任务有可能成功,也有可能失败。成功和失败都是常事。


 


K Mohan • Hyderabad • 4 hours ago


Let the orbiter find out where is Vikaram lander


让轨道器找出“维克拉姆”号着陆器在哪里


 


Freiburg • 2 hours ago


Sad. Monkkkkey Modi should do his Job at PMO. Scientist''s attention was diverted by Monkkkkey Modi jumping around.


伤心。莫迪应该坐在总理办公室工作,到ISRO参观分散了科学家的注意力。


 


Kamasuthra • Kamasuthra • Kerala • 6 hours ago


Everything perfect till Modi landed.


一切都很顺利,莫迪去参观时才出问题。


 


patel Sunny • 2 hours ago


ProudToBeIndian


为自己是印度人而骄傲


 


kiran • 58 mins ago


This failure is steppstepping stone for tomorrow''s success


失败是成功的垫脚石


 


Anil • 1 hour ago


ISRO our pride


ISRO是我们的骄傲


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