Here is rocket engine drawing. The combustion chamber made from copper and the outer shell from stainless steel. The coolant, either water or gasoline will be between
With either pressurised water or propellant, used as the coolant how can these two components be hermetically joined? Can I use welding or something else to create a sealed join between steel and copper?
I can't use rubber seals because of the heat produced by the combustion chamber. I thought about a threaded connection. Can it be used here? Or maybe there is a better way to join the two?