The pendulous vanes which are used to erect the gyro react to the centrifugal force produced in a turn causing it to erect to false datum. Also the 'bottom heaviness' of the gyro case also reacts to the same centrifugal forces causing the following: -
90 degrees of turn - Indicates Climb and underbank.
180 degrees of turn -Indicates Climb and normal bank.
270 degrees of turn - Indicates Climb and overbank.
360 degrees of turn - Indicates normal attitude and normal bank.
Yes but why, once the turn is established and maintained, would these errors change from indicating underbank to correct bank to overbank if the same centrifugal (or is it centripetal?) force was applied throughout?
Just asking because I really don't understand.