Does the jacket of tubes used to cool the nozzle and combustion chamber in a rocket engine also give it some structural strength? Does it have any function relating to withstanding the pressure of the byproduct gases, or is it for cooling purposes only?

  • $\begingroup$ The walls of the combustion chamber are exposed to the pressure inside and should withstand it. $\endgroup$
    – Uwe
    Commented Aug 17, 2017 at 20:20

1 Answer 1


Take a look at this question: How are rocket nozzles made? In pictures there, you can see that the cooling jacket IS the nozzle in many cases.

In this picture I took of a flown, but scrapped SSME nozzle, you can see that the inside of the nozzle is constructed solely of the cooling tubes.

enter image description here

Here is a close-up.

enter image description here


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.