印度成功进行一箭20星发射 任务完成后末级火箭又进行两 ...

Indian Space Research Organisation (ISRO) on Wednesday launched in a single rocket a total of 20 satellites, including two student satellites from Indian universities and 17 satellites of four foreign countries.

The space agency's PSLV C-34 rocket lifted off at 9.25 a.m. from the Second Launch Pad in Satish Dhawan Space Centre and some 16 minutes later placed Cartosat-2 Series satellite about 505 km above the Earth's orbit. Within the next 10 minutes, the remaining 19 satellites were eventually placed in the intended orbits.

Soon after the launch, ISRO chairman A.S. Kiran Kumar said, "With this mission, we have launched the current generation Earth observation satellite along with 17 satellites from foreign countries."
今天中午印度用一枚火箭发射了20颗卫星，其中17颗是外国卫星。

PSLV performs tricky experiments

The vehicle will not only put 20 satellites into the same orbit — the highest number of satellites to be put into orbit by a PSLV — but it will perform two tricky experiments of the same nature. Fifty minutes after the satellites are injected into the orbit from the fourth stage of the vehicle, its engine will be re-ignited for five seconds. Then it will be shut down for 50 minutes and re-ignited for another five seconds, according to K. Sivan, Director, Vikram Sarabhai Space Centre, Thiruvananthapuram.
这次发射完成后，第四级火箭每间隔50分钟启动5秒钟，为下次把卫星送入不同轨道验证技术。

http://www.thehindu.com/sci-tech ... ampaign=RelatedNews

这么多卫星有胖有瘦有重有轻，把印尼美国德国加拿大的卫星塞在印度主卫星和末级火箭周围也是下了一番功夫。


Indian Space Research Organisation (ISRO) on Wednesday launched in a single rocket a total of 20 satellites, including two student satellites from Indian universities and 17 satellites of four foreign countries.

The space agency's PSLV C-34 rocket lifted off at 9.25 a.m. from the Second Launch Pad in Satish Dhawan Space Centre and some 16 minutes later placed Cartosat-2 Series satellite about 505 km above the Earth's orbit. Within the next 10 minutes, the remaining 19 satellites were eventually placed in the intended orbits.

Soon after the launch, ISRO chairman A.S. Kiran Kumar said, "With this mission, we have launched the current generation Earth observation satellite along with 17 satellites from foreign countries."
今天中午印度用一枚火箭发射了20颗卫星，其中17颗是外国卫星。

PSLV performs tricky experiments

The vehicle will not only put 20 satellites into the same orbit — the highest number of satellites to be put into orbit by a PSLV — but it will perform two tricky experiments of the same nature. Fifty minutes after the satellites are injected into the orbit from the fourth stage of the vehicle, its engine will be re-ignited for five seconds. Then it will be shut down for 50 minutes and re-ignited for another five seconds, according to K. Sivan, Director, Vikram Sarabhai Space Centre, Thiruvananthapuram.
这次发射完成后，第四级火箭每间隔50分钟启动5秒钟，为下次把卫星送入不同轨道验证技术。

http://www.thehindu.com/sci-tech ... ampaign=RelatedNews

这么多卫星有胖有瘦有重有轻，把印尼美国德国加拿大的卫星塞在印度主卫星和末级火箭周围也是下了一番功夫。