Consider the heat transfer to the surface of a rocket nozzle. The combustion gases flow out at 1100 ◦C and the heat flux to the surface is 10 kW/m2. The current operating temperature of the nozzle is 1000 ◦C.
a. The maximum surface temperature of the nozzle material is to be constrained by material properties to be 600 ◦C. What is the heat duty of the coolant required (per square meter of surface area)?
b. It is suggested as an alternative that one can reduce the nozzle length L by a factor of two. To maintain rocket performance, the exhaust velocity must be increased by a factor of two. What is the new heat duty?
Already registered? Login
Not Account? Sign up
Enter your email address to reset your password
Back to Login? Click here