The continuing growth of air transport, accompanied by increased speed and nonstop flight distances, makes for more stringent requirements on the accuracy of the navigation equipment in modern aircraft. This has led to a conflict between the need of decreasing the angular drift rate dpsi/dtd of gyroscopic instruments and the actually employed value dpsi/dtd=0.1 deg/h, a standard that dates back to the 1930s. Investigations devoted to the solution of this problem show that the accuracy of gyroscopic instruments is limited by the structure of the rotor material. In fact, in the interior of the crystal lattice of the material there exist clusters and voids whose relative positions vary with time. As a result the center of gravity of the rotor can be shifted by a certain amount relative to the gyroscope suspension point.
Ways of increasing the accuracy of gyroscopic instruments for aviation
Erhoehung der Messgenauigkeit gyroskopischer Instrumente fuer Flugzeuge
Measurement Techniques ; 21 , 3 ; 354-355
1978
2 Seiten, 6 Quellen
Aufsatz (Zeitschrift)
Englisch
Gyroscopic and Magnetic Instruments
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