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Consider the 2d phugoid approximation with natural frequency of 0.4. Determine the approximate value of aircraft speed.(a) 34.68(b) 56(c) 12(d) 12.68This question was posed to me during a job interview.I would like to ask this question from Dynamic Stability in section Stability, Control, and Handling Qualities of Aircraft Design

Answer» RIGHT answer is (a) 34.68

To explain I would say: GIVEN, natural frequency w = 0.4

Approximate value of AIRCRAFT SPEED = 1.414*g/w = 1.414*9.81/0.4 = 34.68 m/s.


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