Gyro - Directional and Turn and Bank

The understand of how the traditional gyro works is important to understand how instruments work. This video explains the two basic property of mechanical gyro, rigidity and precision.

The property of rigidity is used in the directional gyro ( and ADI), Notice that the axis of rotation is horizontal, so the rigidity is in the horizontal plan. If you move in vertical plane, aircraft nose up or down, there is no effect.
The turn and bank is using the property of precession. If a force is applied to the rotating mass, directly or indirectly, the force is taken 90 degree in the direction of rotation.When the aircraft turn, the force it applied through the axis of the gyro and transmitted to the rotating mass. Take note that the axis of the gyro is "Y" axis.

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