Find the value of CHδe if tail angle of attack is 3 deg and CHɑt is -0.004. Consider elevator floats up by 2 degree.(a) -0.006(b) -7(c) 1.223(d) 1.225I have been asked this question in an interview for job.This interesting question is from Stick-Free Stability in division Stability, Control, and Handling Qualities of Aircraft Design

Find the value of CHδe if tail angle of attack is 3 deg and CHɑt is

1.	Find the value of CHδe if tail angle of attack is 3 deg and CHɑt is -0.004. Consider elevator floats up by 2 degree.(a) -0.006(b) -7(c) 1.223(d) 1.225I have been asked this question in an interview for job.This interesting question is from Stick-Free Stability in division Stability, Control, and Handling Qualities of Aircraft Design
Answer» Correct option is (a) -0.006 To elaborate: GIVEN, tail AOA ɑ=3°, ELEVATOR float e =-2° (UPWARD deflection is NEGATIVE), CHɑt = -0.004 Now, CHδe = – ɑ * CHɑt / e = -3*-0.004/-2 = -0.006.

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