チューンド・ドライ・ジャイロのクォードレチャスプリングレートに関する実験的研究

抄録

This paper gives a survey result on the mechanism of quadrature spring rate occurring at the Tuned Dry Gyro. It is noted that the quadrature spring rate is a damping torque. This damping torque is similar to the spring reaction torque generated by the flexure displacement angles and drives the gyro rotor back to a balanced position. In order to investigate the mechanism of damping occurring at the gyro rotor, the relation between surrounding gas pressure and damping factor under gyro nonoperating was measured. Furthermore, the drag torque acting on the gyro rotor was measured by the back EMF method at different surrounding gas pressure. As a result of these testings, it was found out that the quadrature spring rate was generated by gas movement of the flexure around and drag forces due to bearing loss and windage loss, and the mechanism and magnitude of each damping torques which are contributor to the quadrature spring rate were extracted separately.