Question

The engine of an aeroplane rotates in clockwise direction when seen from the tail end and the aeroplane takes a turn to the left. The effect of gyroscopic couple on the aeroplane will be

(a) to dip the nose and tail

(b) to raise the nose and tail

(c) to raise the nose and dip of the tail

(d) to dip the nose and raise the tail

I have been asked this question during an online exam.

This intriguing question originated from Gyroscopic Couple topic in division Gyroscopic Couple and Precessional Motion of Machine Dynamics

Answer 1

Right choice is (c) to raise the nose and dip of the tail

Best explanation: The engine of an aeroplane rotates in clockwise direction when seen from the tail end and the aeroplane takes a turn to the left. The effect of gyroscopic couple on the aeroplane will be to raise the nose and dip of the tail.

The engine of an aeroplane rotates in clockwise direction when seen from the tail end and the aeroplane takes a turn to the right. The effect of gyroscopic couple on the aeroplane will be to dip the nose and raise the tail.