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Stick fixed neutral point is defined at 40% of chord. Choose appropriate location of Stick free neutral point.(a) 0.39(b) 0.8(c) 0.65(d) 0.5I have been asked this question in class test.Question is taken from Stick-Free Stability in division Stability, Control, and Handling Qualities of Aircraft Design

Answer»

The correct OPTION is (a) 0.39

To elaborate: Typically, STICK FREE neutral point is located at 2-5% ahead of stick fixed neutral point.

Stick free neutral point = 2 to 5 % ahead of stick fixed = 0.02*0.4 to 0.05*0.4 ahead of stick fixed = 0.008 to 0.1 ahead of stick fixed neutral point

Hence, neutral point location of stick free = 0.4-(0.008 to 0.1) = 0.392 to 0.39.

Hence, Correct answer from the GIVEN OPTIONS Will be 0.39.



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