超级军网印度月船一号已完成3次变轨,一切正常,第4次变轨应该是明 ...
来源：百度文库 编辑：超级军网 时间：2024/04/29 18:17:33
印度ISRO官方网站月船一号的数据:
10月22日早6点22发射,轨道255x22860;
10月23日早9点第一次变轨,轨道301x37830;
10月25日早5点48第2次变轨,轨道336x74715;
10月26日早7点08第3次变轨,轨道348x164600
随评月船一号运行特点:
首先,火箭推力小,只能送入2万多千米的椭圆轨道,不像我们的嫦娥一号是5万多千米;
第二,变轨我们第一次远地点其余3次近地点,而月船一号每次都是在近地点附近而不是近地点本身变轨,每次都抬高一点近地点,因为26日变轨后的周期73小时,不出意料的话,第四次变轨应该是26+3=29日明天早上印度ISRO官方网站月船一号的数据:
10月22日早6点22发射,轨道255x22860;
10月23日早9点第一次变轨,轨道301x37830;
10月25日早5点48第2次变轨,轨道336x74715;
10月26日早7点08第3次变轨,轨道348x164600
随评月船一号运行特点:
首先,火箭推力小,只能送入2万多千米的椭圆轨道,不像我们的嫦娥一号是5万多千米;
第二,变轨我们第一次远地点其余3次近地点,而月船一号每次都是在近地点附近而不是近地点本身变轨,每次都抬高一点近地点,因为26日变轨后的周期73小时,不出意料的话,第四次变轨应该是26+3=29日明天早上
10月22日早6点22发射,轨道255x22860;
10月23日早9点第一次变轨,轨道301x37830;
10月25日早5点48第2次变轨,轨道336x74715;
10月26日早7点08第3次变轨,轨道348x164600
随评月船一号运行特点:
首先,火箭推力小,只能送入2万多千米的椭圆轨道,不像我们的嫦娥一号是5万多千米;
第二,变轨我们第一次远地点其余3次近地点,而月船一号每次都是在近地点附近而不是近地点本身变轨,每次都抬高一点近地点,因为26日变轨后的周期73小时,不出意料的话,第四次变轨应该是26+3=29日明天早上印度ISRO官方网站月船一号的数据:
10月22日早6点22发射,轨道255x22860;
10月23日早9点第一次变轨,轨道301x37830;
10月25日早5点48第2次变轨,轨道336x74715;
10月26日早7点08第3次变轨,轨道348x164600
随评月船一号运行特点:
首先,火箭推力小,只能送入2万多千米的椭圆轨道,不像我们的嫦娥一号是5万多千米;
第二,变轨我们第一次远地点其余3次近地点,而月船一号每次都是在近地点附近而不是近地点本身变轨,每次都抬高一点近地点,因为26日变轨后的周期73小时,不出意料的话,第四次变轨应该是26+3=29日明天早上
网上盛传月船出事的TLE轨道数据,其实是2008-10-24 08:37:29公布的,轨道是301x37830千米,而后NORAD北美防司就一直没有公布新的数据(估计也不会再有新的数据了,因为北美防司不太关注深空探测器,中国的嫦娥一号就这样)
另外,世界上目前还没有实时检测并公布卫星运行位置的网站，大家基本都是根据NORAD北美防司定期发布的轨道参数，通过软件模拟卫星轨道的运行，大椭圆轨道是有近地点和远地点的，所以卫星某一时刻高度下降，另一时刻高度上升
另外,世界上目前还没有实时检测并公布卫星运行位置的网站，大家基本都是根据NORAD北美防司定期发布的轨道参数，通过软件模拟卫星轨道的运行，大椭圆轨道是有近地点和远地点的，所以卫星某一时刻高度下降，另一时刻高度上升
]]
原帖由 papabearfox 于 2008-10-28 22:52 发表
09.24晚上 - 地面距离: 297千米; 速度: 9.72 千米/秒; 在印度尼西亚东上空 10-27,
12:30子夜 - 地面距离: 31500千米; 速度: 1.13 千米/秒, 在秘鲁上空
01:21凌晨 - 地面距离: 35100千米; 速度: 1.52 千米 ...
不是说了么，根据早期公布的轨道参数进行的模拟而已
并且，卫星在椭圆轨道运行时，高度和速度当然是在不断变化的，又不是圆形轨道
不过，前3次变轨，和印度官方公布的计划轨道有稍大的偏差
三次变轨,远地点差了35277公里,误差在17.7%左右
三次变轨,远地点差了35277公里,误差在17.7%左右
]]
]]
我恨不得击落阿三的这个蛋蛋！
怎么差了这么多。应该到199277的，结果才到164600.回顾一下，发现误差误差不小
第一次变轨,应该到315X37421，结果到了301x37830;
第二次变轨,应该到338X73925，结果到了轨道336x74715;
阿三要变九次轨，任务艰巨啊。
第一次变轨,应该到315X37421，结果到了301x37830;
第二次变轨,应该到338X73925，结果到了轨道336x74715;
阿三要变九次轨，任务艰巨啊。
原帖由 westcrwest 于 2008-10-28 23:22 发表
我恨不得击落阿三的这个蛋蛋！
老兄为什么会有这种奇怪的想法？
从“低处”往“高处”看的人才有这样的想法呢。比如，以南韩人的“低处”看神州飞船这个“高处”，才会有这种想法的。老兄难道是巴基斯坦人？
静观其变不做发言。
n2yo最新
CHANDRAYAAN-1
Tue, 28 Oct 2008 12:44:19 UTCLatitude: -0.97°
Longitude: 119.6°
Right Ascension: 23h 18m 34s
Declination: -6° 44' 57''
Azimuth: 155.44°
Elevation: +51.95°
Altitude [km]: 37820.1
Altitude [miles]: 23448.46
Speed [km/s]: 1.82
Speed [miles/s]: 1.13
Eclipsed? NO
==================================================================
CHANDRAYAAN-1
Tue, 28 Oct 2008 12:44:51 UTCLatitude: -0.95°
Longitude: 119.52°
Right Ascension: 23h 18m 47s
Declination: -6° 43' 39''
Azimuth: 155.55°
Elevation: +52°
Altitude [km]: 37818.87
Altitude [miles]: 23447.7
Speed [km/s]: 1.82
Speed [miles/s]: 1.13
Eclipsed? NO
好像真的没成功。。。。
CHANDRAYAAN-1
Tue, 28 Oct 2008 12:44:19 UTCLatitude: -0.97°
Longitude: 119.6°
Right Ascension: 23h 18m 34s
Declination: -6° 44' 57''
Azimuth: 155.44°
Elevation: +51.95°
Altitude [km]: 37820.1
Altitude [miles]: 23448.46
Speed [km/s]: 1.82
Speed [miles/s]: 1.13
Eclipsed? NO
==================================================================
CHANDRAYAAN-1
Tue, 28 Oct 2008 12:44:51 UTCLatitude: -0.95°
Longitude: 119.52°
Right Ascension: 23h 18m 47s
Declination: -6° 43' 39''
Azimuth: 155.55°
Elevation: +52°
Altitude [km]: 37818.87
Altitude [miles]: 23447.7
Speed [km/s]: 1.82
Speed [miles/s]: 1.13
Eclipsed? NO
好像真的没成功。。。。
]]
一切正常是来自A3的消息吗?怎么有的又说误差了几万公里?
网上的消息假的太多，还是静观其变吧。
建议大家心态要平和，不要象棒子看齐
建议大家心态要平和，不要象棒子看齐
A3的月船看图像是一圈圈绕到月球，咋们的嫦娥MM是飞到月球，那个方法更好？？
原帖由 snow16 于 2008-10-29 11:25 发表
A3的月船看图像是一圈圈绕到月球，咋们的嫦娥MM是飞到月球，那个方法更好？？
从节约燃料的角度看A3的更好，不过对控制和测量的水平要求更高。否则反而消耗更多的燃料。
感觉从原理上讲，在近地点变轨应该是最精确的，其余位置无论在计算上还是推进控制上都比较麻烦。不知道为什么A3不直接在近地点变轨。
原帖由 十兵卫 于 2008-10-28 23:29 发表
老兄为什么会有这种奇怪的想法？
从“低处”往“高处”看的人才有这样的想法呢。比如，以南韩人的“低处”看神州飞船这个“高处”，才会有这种想法的。老兄难道是巴基斯坦人？
这叫拉大差距....;P
原帖由 songfq 于 2008-10-28 22:56 发表
不过，前3次变轨，和印度官方公布的计划轨道有稍大的偏差
三次变轨,远地点差了35277公里,误差在17.7%左右
楼主说“一切正常”是不是很搞笑
我希望印度这次探月成功，毕竟这也是印度航天发展的一个进步．发展航天不仅仅是几个国家的理想，泛是有能力的国家都会有这个理想．航天的门槛只会越来越低．
在高科技项目上，搞大跃进是要出大问题的，印度动不动就拿中国比，你有我也要有的心态不好，中国航天的发展始终是按照自己的需求和能力来付诸实现的，这样更稳健。
我觉得A3的轨道设计还是不错的，咱们CE估计是因为燃料比较富余，才那样走的
一圈一圈的绕，猴年马月才能绕到月球啊，我看阿三就象小媳妇儿，手中没几个钱，买菜的时候就只好精打细算，来回折腾。
看不懂下面这些鸡肠文字，不知是什么意思
http://www.khabrein.info/index.p ... 18124&Itemid=88
Chandrayaan-1 reached the third orbit with an apogee of 1,65,000 km. But the orginal plan was to reach an apogee of nearly 2,00,000 km. It is thus about 35,000 km off the mark in its third orbit.
The fourth orbit should have an apogee of nearly 2,70,000 km. And that means Chandrayaan-1 has to be fired an extra 35,000 km tomorrow.
This is not an alarm situation, though. ISRO can correct it without much of a problem.
Chandrayaan-1’s flawless launch has boosted India’s image in the world. There is no doubt about it.
Besides the feat also shows that India is fast catching up with China that began its ambitious space programmes long before India thought to begin one.
Everyone is all praise for the feat that India has achieved within a short time and with minimal resources. From Barack Obama to Ban Ki Moon everyone has realized that India has finally arrived.
It is a big achievement for a country that just over a decade ago was known more for snake charmers, abject poverty, backwardness and corruption.
But things have changed and certainly for better when it comes to economic prosperity and scientific advancements.
Now consistent impressive performance in the economic filed in the last decade has seen India’s graph going up in the international arena.
India is taken as an important member of the world fraternity and an economic powerhouse of the world that has potential to become a superpower.
Though India’s human rights performance has been dismal in the last decade with right wing Hindu chauvinists targeting two large minorities of the country, Christians and Muslims but it has not hindered India’s ascendance to the big league in the space.
For India, which began its space journey in a modest way in 1963 with the launch of a 9-kilo rocket from a research facility at the fishing hamlet of Thumba in Kerala, the Chandrayaan-1 marks a quantum leap. Indeed, India’s unmanned scientific mission to moon, which was approved almost four years ago, has moved further up India’s priority list in the wake of China’s successful manned mission of October 2003.
India’s Chandrayaan-1 mission is aimed at high-resolution remote sensing of the moon in visible, near infrared(NIR), low energy X-rays and high-energy X-ray regions. Specifically the objectives is to prepare a three-dimensional atlas (with a high spatial and altitude resolution of 5-10m) of both near and far side of the moon.
Its objective is also to conduct chemical and mineralogical mapping of the entire lunar surface for distribution of elements such as Magnesium, Aluminum, Silicon, Calcium, Iron and Titanium with a spatial resolution of about 25 km and high atomic number elements such as Radon, Uranium & Thorium with a spatial resolution of about 20 km.
Chandrayaan carried as many as 11 payloads — five from India, three from the European Space Agency (ESA), one from the Bulgarian Space Agency (BSA) and two from NASA, making it a truly global initiative. The two-year mission will be invaluable as the Chandrayaan is programmed to orbit the Lunar surface and digitally map it. It will also send information on the traces of the composition of the lunar surface apart from looking for atomic minerals such as thorium and uranium. The probe is also equipped with high-resolution cameras
http://www.khabrein.info/index.p ... 18124&Itemid=88
Chandrayaan-1 reached the third orbit with an apogee of 1,65,000 km. But the orginal plan was to reach an apogee of nearly 2,00,000 km. It is thus about 35,000 km off the mark in its third orbit.
The fourth orbit should have an apogee of nearly 2,70,000 km. And that means Chandrayaan-1 has to be fired an extra 35,000 km tomorrow.
This is not an alarm situation, though. ISRO can correct it without much of a problem.
Chandrayaan-1’s flawless launch has boosted India’s image in the world. There is no doubt about it.
Besides the feat also shows that India is fast catching up with China that began its ambitious space programmes long before India thought to begin one.
Everyone is all praise for the feat that India has achieved within a short time and with minimal resources. From Barack Obama to Ban Ki Moon everyone has realized that India has finally arrived.
It is a big achievement for a country that just over a decade ago was known more for snake charmers, abject poverty, backwardness and corruption.
But things have changed and certainly for better when it comes to economic prosperity and scientific advancements.
Now consistent impressive performance in the economic filed in the last decade has seen India’s graph going up in the international arena.
India is taken as an important member of the world fraternity and an economic powerhouse of the world that has potential to become a superpower.
Though India’s human rights performance has been dismal in the last decade with right wing Hindu chauvinists targeting two large minorities of the country, Christians and Muslims but it has not hindered India’s ascendance to the big league in the space.
For India, which began its space journey in a modest way in 1963 with the launch of a 9-kilo rocket from a research facility at the fishing hamlet of Thumba in Kerala, the Chandrayaan-1 marks a quantum leap. Indeed, India’s unmanned scientific mission to moon, which was approved almost four years ago, has moved further up India’s priority list in the wake of China’s successful manned mission of October 2003.
India’s Chandrayaan-1 mission is aimed at high-resolution remote sensing of the moon in visible, near infrared(NIR), low energy X-rays and high-energy X-ray regions. Specifically the objectives is to prepare a three-dimensional atlas (with a high spatial and altitude resolution of 5-10m) of both near and far side of the moon.
Its objective is also to conduct chemical and mineralogical mapping of the entire lunar surface for distribution of elements such as Magnesium, Aluminum, Silicon, Calcium, Iron and Titanium with a spatial resolution of about 25 km and high atomic number elements such as Radon, Uranium & Thorium with a spatial resolution of about 20 km.
Chandrayaan carried as many as 11 payloads — five from India, three from the European Space Agency (ESA), one from the Bulgarian Space Agency (BSA) and two from NASA, making it a truly global initiative. The two-year mission will be invaluable as the Chandrayaan is programmed to orbit the Lunar surface and digitally map it. It will also send information on the traces of the composition of the lunar surface apart from looking for atomic minerals such as thorium and uranium. The probe is also equipped with high-resolution cameras
]]
中途修正也未必不可，问题是登月是有窗口的，这样增加变轨次数，会否导致环地飞行的圈数增加，而月球是再绕地公转的，这样能否＂追＂上月球，与月球相遇，如果不能，又还有机会没有？