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Drag divergence Mach number will increase by using _______________(a) area rule(b) increment in total volume(c) increase in drag(d) drag increment at maximum areaI got this question during a job interview.I want to ask this question from Configuration Layout in chapter Configuration Layout Considerations of Aircraft Design

Answer»

Correct choice is (a) AREA rule

Best EXPLANATION: Drag divergence Mach number is that Mach number after which drag increases DRASTICALLY. Area rule can be USED to lower the drag up to 50%. By using area rule properly we can improve the drag divergence Mach number.



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