Questions tagged [liquid-cooled]

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4 votes
4 answers
388 views

How do pressure-fed engines stay cool?

Does anyone know how pressure-fed/hypergolic rocket engines cool themselves down? Do they regenerativly cool themselves? Thanks!
Mr.Taubre's user avatar
6 votes
5 answers
2k views

Using of the rocket propellant for engine cooling

Why does liquid space propellant make a good engine coolant? I was researching the regeneratively cooled nozzle and combustion chamber on the Merlin 1D when I found this out. I do know that the pipes ...
user242559's user avatar
0 votes
0 answers
93 views

Freezing problem of hydrocarbon fuels in a LOX cooled engine

I assume that in a LOX/RP-1 engine where RP-1 is used as a coolant, we need not consider the freezing issues. The reason for my assumption is that we need not bring the chamber and injectors to the ...
Vasanth C's user avatar
  • 1,161
3 votes
0 answers
69 views

Why there are small holes just at the ending of RS-25 rocket engine? [duplicate]

I have seen these holes in many pictures and I can't understand what are these and why are they used?
Aarav Prasad's user avatar
5 votes
0 answers
75 views

Understanding the basics of spacecraft thermal control systems

I have a broad understanding that in spacecraft cooling systems where a circulating liquid is used, a first coolant usually runs through the spacecraft and collects heat and then passes through a heat ...
James Bond's user avatar
3 votes
1 answer
133 views

Selection criteria for coolant media on spaceships

What is the selection criteria for coolant media on spaceships? I have read that ammonia as well as water glycol have been used. These two have very diverse properties. So what makes both of them ...
Niranjan's user avatar
  • 3,758
7 votes
2 answers
970 views

Active liquid cooling for heat shield

I have not found much about active liquid cooling for heat shields using cryogenic fuel. It has been mentioned but not researched in depth. It may never have been done. Now that the Starship seems to ...
Johnny Robinson's user avatar