GYROSCOPIC APPARATUS

PURPOSE:To prevent the generation of an error, by setting the radial spring constants of a torsion bar and a shaft so that a gimbal parallelly moves without being inclined with respect to a case even if acceleration acts on a gyrosopic rotor in the spin axis direction thereof. CONSTITUTION:A gimbal 6 is supported at the center part of a case 1 by a torsion bar 4 and a shaft 9a. The radial spring constants Kt, Ka of the torsion bar 4 and the shaft 9a are set so that the displacement St(=Ft/Kt) of the torsion bar 4 and the displacement Sa(=Fa/Ka) of the shaft 9a to support forces Ft, Fa respectively acting on the torsion bar 4 and the shaft 9a become equal when acceleration is applied to a gyroscopic rotor 8 in the spin axis direction thereof. By this method, the gimbal 6 moves in parallel against acceleration without being inclined and the generation of an error can be prevented.