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The North American Aviation (NAA) G5B gyroscope was last in a series of gyroscopes that used ball bearings to support the rotor. It was considered an obsolescent design in that the practical limits of ball bearing technology, as applied to gyroscope rotors, had been reached. The basic design of the component parts of the gyroscopeContinue reading “MEMORIES OF THE NORTH AMERICAN AVIATION G5B GYROSCOPE”