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9 votes
4 answers
6k views

Is there a maximum Isp for "exothermic chemical reaction rockets"?

The question Is there a maximum $\text{I}_{sp}$? reminded me that I once read somewhere that the maximum possible $\text{I}_{sp}$ for a rocket engine based on expansion driven by exothermic, ...
uhoh's user avatar
  • 149k
6 votes
1 answer
1k views

Density of propylene when used as rocket fuel, and advantages (if any) over RP-1?

Recently Vector space from USA has said that propylene is a better choice of fuel than RP-1. See Ars Technica's After a decade of testing, propylene rocket fuel may be ready for prime time Why is ...
user167195's user avatar
12 votes
5 answers
2k views

What limits burning speed of solid propellant?

SRBs and missiles use grain to regulate thrust over time, as only exposed surface of the propellant burns. But what causes propellant to burn only on the surface, and regulates the speed at which the ...
SF.'s user avatar
  • 55.1k
6 votes
1 answer
12k views

Can I make my own RP1? [closed]

Is it possible for me to buy kerosene from a local store and then try to refine it to the extent where it would be considered RP1. If so how would I do it? For those who are wondering me and a group ...
jack's user avatar
  • 167