Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [pslv]

Questions about the ISRO PSLV (Polar Space Launch Vehicle) launch vehicle.

4
votes
1answer
92 views

Why does PSLV use four stages to get to LEO, and why do they alternate solid, liquid, solid, liquid?

Is there a simple way to explain why ISRO's PSLV launch vehicle uses four stages to get to LEO, and why they alternate as follows: ...
2
votes
1answer
39 views

help understanding this complicated structure that will deploy HySIS

This ISRO page for the HysYS spacecraft says: HysIS, the primary satellite of PSLV-C43 mission, weighing about 380 kg, is an earth observation satellite configured around ISRO’s Mini Satellite-2 (...
3
votes
0answers
29 views

How close will the cubesats be when numerous of them are launched simultaneously?

Checking the onboard video of PSLV C43 gives a feel like the CubeSats are released in very proximity. Does this mean that these CubeSats will be orbiting in such very close proximity through out ...
5
votes
0answers
54 views

Acceleration Profile of PSLV and GSLV

What is the way to find out the acceleration profiles of IRSO's GSLV and PSLV from launch until achieving orbit?
1
vote
1answer
176 views

Why is ISRO's PSLV named “Polar”? Are there challenges for other inclinations?

The "P" in ISRO's PSLV stands for "Polar". Is there anything particularly "polar" about this launch vehicle, or is the use of the word in the name of the rocket more historical or for marketing ...
4
votes
1answer
291 views

What are the falling parts in this ISRO rocket launch?

ISRO launched IRNSS-1I satellite yesterday using its versatile PSLV-XL. In the launch video (from 00:35 to 00:40), within five seconds of the launch, many large parts of the rocket are seen to be ...
6
votes
1answer
140 views

How was it difficult for the PSLV to launch a record of 104 satellites?

Last year, ISRO launched 104 satellites successfully into orbit. People praised it as an 'astounding achievement'. Besides a more complicated-than-usual satellite separation, what truly was ...
4
votes
1answer
145 views

What does CLG INIT mean?

During India's PSLV-C35 launch on 26 September 2016, mission control's launch sequence events (stage separations, stage ignitions, etc.) included 'CLG INIT'. What does it mean?
31
votes
6answers
6k views

Why is there a “coasting” phase in some space launches?

During the PSLV (India's Polar Satellite Launch Vehicle) C24 launch on 4 April 2014, once stage 3 (PS3) had burned out, it wasn't immediately jettisoned, but instead there was a coasting phase for ...
8
votes
1answer
1k views

Why did ISRO require additional tracking ships in the South Pacific for its MOM mission?

ISRO (Indian Space Research Organisation) so far never before used additional marine vessels to help track their launch vehicles, as an extension to the Indian Deep Space Network (IDSN). So why did it ...
6
votes
1answer
279 views

Was the ISRO Mars mission really scaled down?

This news-report writes to say India’s bid to explore Mars will be a scaled down affair with the space agency flying experimental payload of less than 15 kg as against 25kg planned originally Was ...
8
votes
1answer
1k views

Can Indian PSLV take ISRO to Mars?

Is the Polar Satellite Launch Vehicle capable of taking a 1,350 kg orbiter from the Earth to Mars as this article states?