Question

What is  in  for a heading control system?

(a) Rate of change of heading

(b) Bank angle

(c) Side slip angle

(d) Required rudder deflection

This question was addressed to me by my school principal while I was bunking the class.

Question is taken from Autopilots, Height Control and Heading Control in chapter Autopilots and Flight Management Systems of Avionics

Answer 1

Right choice is (a) Rate of change of heading

To elaborate: is the Rate of change of heading if the forward velocity of the aircraft is U and the bank angle is ɸ. The function of the heading control mode of the autopilot is to steer the aircraft along a particular set  of direction.   is used assuming the aircraft is in coordinated turn.