New answers tagged

3

I would have expected some kind of fin... How do these two cylindrical "pods", symmetrically placed on either side of a cylindrical vehicle, contribute to its aerodynamic stability? Any source of drag placed well behind the center of gravity of the launcher will improve aerodynamic stability. The advantage of fins over cylindrical pods are that ...


8

The answer already posted is excellent. All I want to add is a follow-up question you might want to ask, and my answer to it. Q: OK, so those in particular aren't boosters. But would it ever make sense to use lots of tiny boosters instead of one big one? A: Yes, for two main reasons. One is the extreme expense of anything involved in space flight, and ...


33

Why would these be used instead of just using a larger first stage? Strapping on differently-sized boosters allows variance in payload mass without redesign of the first stage. The PSLV has flown with no (PSLV-CA), small as shown (PSLV-G), or big (PSLV-XL) solid boosters. PSLV-CA (no boosters) - can deliver 1100 kg to 622 km sun-synchronous orbit PSLV-G (...


Top 50 recent answers are included