L4 - Inlets and Nozzles Flashcards
1
Q
What is the purpise of an inlet?
A
To slow the flow down so that no shockwaves occur in the compressor. Also the provide steady flow.
2
Q
What is a stagnation quantity?
A
The combination of static and dynamic quantities.
3
Q
What signifies a stagnation quantity?
A
A 0 subscript
4
Q
What happens over an inlet?
A
Pressure loss but no change in stagnation temoerature.
5
Q
What does it mean if the nozzle is chocked?
A
It means the outlet pressure does not equal atmospheric pressure.
6
Q
What is the critical exit pressure?
A
The exit pressure at Mj = 1
7
Q
Where can one find example of turbojet and turbofan calculations?
A
Lectures 4-5
8
Q
What is afterburning?
A
When additional fuel is burn in the jet pipe, this increases enthalpy further to provide more kinetic energy.
