Commercial Pilot License (CPL) Practice Exam 2026 - Free Commercial Pilot License Practice Questions and Study Guide

Precession in the context of gyroscopes refers specifically to the tilting of a gyro in response to a deflective force. When a spinning gyroscope experiences an external torque, its axis of rotation moves at a right angle to the direction of that torque, resulting in the precessional motion. This behavior is a fundamental characteristic of gyroscopes and plays a critical role in their operation, particularly in navigational instruments and stability systems in airplanes.

Understanding precession is essential for pilots, as it helps explain how gyroscopic instruments respond to control inputs and changes in orientation. For instance, when a pilot attempts to change the pitch of an aircraft by pulling back on the yoke, the gyro might precess in a direction that contributes to pitch attitude changes, allowing the pilot to understand and feel the mechanical behaviors of the instruments they are relying on.

The other options, while related to gyroscopes, do not accurately describe precession. The rotating force applied to the gyro refers to the initial force that spins it up, the speed at which the gyro spins pertains to the angular velocity of the gyroscope, and the method of calibration involves setting the gyro to ensure accuracy in its readings. None of these adequately capture the essence of precession as