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OpenStudy (anonymous):
Rocket engines are cooled by fuel and oxidizer (e.g. liquid oxygen) circulating in pipes along their hot parts, before being burned. What do you think needs the cooling most--the combustion chamber or the wide "bell" through which the gases exit?
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OpenStudy (deoxna):
The combustion chamber, as the gasses loose energy and heat as they blast outwards.
OpenStudy (anonymous):
thanks so much!
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