Which does not affect the inertial forces felt by the pilot when accelerating or decelerating?(a) Positioning CG with the pivoting point of the head(b) Reduce the weight of the helmet(c) Keeping the head in the upright position(d) Reduce the moment of inertia about yaw and pitch axisThis question was posed to me in an internship interview.I'd like to ask this question from Helmet Mounted Displays topic in division Displays and Man-Machine Interaction of Avionics

Which does not affect the inertial forces felt by the pilot when accel

1.	Which does not affect the inertial forces felt by the pilot when accelerating or decelerating?(a) Positioning CG with the pivoting point of the head(b) Reduce the weight of the helmet(c) Keeping the head in the upright position(d) Reduce the moment of inertia about yaw and pitch axisThis question was posed to me in an internship interview.I'd like to ask this question from Helmet Mounted Displays topic in division Displays and Man-Machine Interaction of Avionics
Answer» Right answer is (c) Keeping the HEAD in the upright position The best explanation: Keeping the head always in an upright position is not an option for pilots since the pilot will lose situational awareness if he does so. The pilot will feel the inertial forces irrespective of his head position. By reducing the moment of inertia we can reduce the inertial torques experienced. Reducing WEIGHT and positioning the CG of the helmet with the PIVOTING point of head ensures that there are MINIMAL out of balance moments.

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