美国黯然伤神:我们刚来激光实验,中国就把卫星点爆了

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美国黯然伤神:我们刚来激光实验,中国就把卫星点爆了


外电报道:4周岁的中国地球观测卫星遥感一号卫星爆炸


The first three pieces of debris cataloged from the Yaogan 1 breakup are shown. The approximate time of the incident (2/4/10 at 6:49 UTC) was determined by “backtracking” the pieces. The fact that the debris and the remainder of the satellite do not exactly “match up” indicates errors associated with the orbital measurements.

Yaogan 1, a Chinese Earth Observation Satellite, erupted into multiple pieces last week. By back-tracking the pieces, I believe the date and time of the incident was February 4, 2010 at about 6:49 UTC. It is interesting to note that the maximum difference in orbital speeds is about 22 m/s. That can be compared with the hundreds of meters per second typical in a collision. Judging by past experience, a few more pieces of debris will be cataloged in the days to come. Yaogan 1 would have been four years old this April (launch date: 27 April 2006).


Just to be complete, there is no indication that this was anything other than an internal explosion. While the original satellite might appear in this particular view to be over China at the time of the incident, it is actually well over the Ocean.



Comment

Will some of the debris fall down? Is there any type of fuel like hydrazine on this kind of satellite? Let’s hope that the possible fuel won’t become an excuse to shoot down the satellite. President Obama is going to meet His Holiness soon.


— 3.1415 · Feb 11, 01:33 PM ·


22 m/s (50 mph) also doesn’t sound like the ill-timed firing of a self-destruct charge. Likely a battery or some other moderately pressurized component burst.


— Allen Thomson · Feb 11, 02:19 PM ·


Pi-

The debris will fall down, but not anytime soon. The orbit is high enough that it will take some time for the pieces to decay. There’s no (unclass) word on what type of thrusters/propulsion are used, as far as i know.


Preliminary analysis points to a propulsion failure as the reason for the breakup. I note 3 newly catalog-able debris piece.


— MJS · Feb 11, 02:21 PM ·


This the first Chinese SAR satellite. The expect lifetime of the satellite is just 2-3 years. So, the satellite definitely retired.


— Wang Ting · Feb 11, 06:53 PM ·


I did a quick search on Chinese news websites. No hits on the story. Anyone else seen anything?


— Gregory Kulacki · Feb 16, 11:23 AM ·


Nothing that I see from China on this satellite. Maybe China will use it to test something before it falls down.


— 3.1415 · Feb 16, 10:43 PM ·



大致译文


监测照片显示前三个碎片从遥感一号卫星解体。这一事件发生在2月4日星期日大约6点49分时间。事实上,碎片和卫星的其余部分不完全“匹配”,表明与轨道测量相关的错误。


中国地球观测卫星Yaogan-1上周突然爆发成多件碎片。由卫星观测追踪,我相信的日期和事件时间是2010年2月4日星期日,大约6点49分。这是值得注意的,速度在轨道的最大差值为22米/秒这可与每几百米的第二次碰撞的典型。从以往经验看,一些更多的碎片将在今后几天发现。 遥感一号卫星今年4岁了,是2006年4月27日发射升空的。


监测发现没有迹象表明这是一个内部以外的任何其他爆炸。在原来的卫星可能出现在这期特别是对中国将在事件发生时,它实际上是远远超过海洋。




话说中国公开中段反导技术技惊世界,GLA奥黑闻之不服,遂也搞了一次中段反导,奈何海基雷达失效,拦截失败,黯然伤神。郁闷之下也不顾不上老大面子干脆来个下三滥:对台军售+会见无赖。中国外交部,国防部,人大纷纷发表声明,说中国很生气,后果严重!!!众皆笑之,不以为然~~



不过,这个后果不像上次反导中国有公开报道,反正大国玩剑大家能看到就行。


总结了一下中国近年惊人之举:


06年底歼十高调亮相


07年1月11日导弹打卫星


08奥运百家来朝


09国庆阅兵尖端武器


09年1月11日中段反导演练,GLA不服,中国遂再于2月4日点爆自己的YG1号卫星……

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