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To reduce aural signatures of engine exhaust, we can use _____________

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To reduce aural signatures of engine exhaust, we can use _____________

(a) insulating material

(b) lofting

(c) drafting

(d) non-insulating material

The question was asked during an internship interview.

I'm obligated to ask this question of Configuration Layout Considerations topic in division Configuration Layout Considerations of Aircraft Design

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Correct answer is (a) insulating material

To explain: We can use insulating materials to reduce the aural signatures. Lofting is mathematical modeling. Drafting is based on drawing.

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