An exhaust cone placed aft of the turbine in a jet engine will cause the pressure in the first part of the exhaust duct to
- increase and the velocity to decrease.
- decrease and the velocity to increase.
- increase and the velocity to increase.
Explanation
The exhaust cone makes the gas passage divergent in its first part, so the gas slows down and, by Bernoulli's principle, its pressure rises. Raising the static pressure ahead of the propelling nozzle helps the nozzle produce thrust efficiently.
Ekio asking:
The type of duct that forms the exhaust cone will determine what happens with the pressure and temperature. I distinguish 2 types of cone and therefore 2 types of conduit:
1 / convergent - divergent
2 / divergent
Community Comments (2)
J
Jordi Posts: 198 06.07.2020 / 15:26
yeah but here it doesnt say for something specific.So take it as it is.Exhaust cone aft of the turbine,increases pressure decreases velocity.
D
Diverdeep Posts: 8 17.05.2023 / 23:45
the exhaust cone to maximize thrust has to increase efflux speed not pressure....
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