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Large cowl lip radius will produce ____________

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Large cowl lip radius will produce ____________

(a) shock separated flow outside of the inlet

(b) shock attached flow

(c) high lifting tendency always

(d) expansion fan

I got this question in class test.

My enquiry is from Propulsion in division Propulsion and Fuel System Integration of Aircraft Design

1 Answer

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Best answer
Correct option is (a) shock separated flow outside of the inlet

For explanation: Engine performance is influenced by cowl lip radius. A large cowl lip radius will produce shock separated flow on the outside of an inlet. Large cowl lip will reduce distortions. This is very helpful at higher AOA.

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