| 摘要 |
1496405 Mechanical caging of gyroscopes SINGER CO 24 June 1975 [18 Nov 1974] 26762/75 Heading G1C A caging system comprises a split ring 11 having a tab 13, 14 on each end thereof, the ring having a first configuration where the minimum inner spacing thereof is greater than the diameter of the rotor 10 and a second configuration where the minimum inner spacing is less than that of the rotor 10 so as to limit the tilt capability of the rotor 10, there being provided means for effecting the movement of the split ring from one configuration to the other. In the embodiment shown, the split ring 11 is retained in its stressed configuration, where it cages the rotor 10, by a pin 16a passing through apertures 13a, 14a in tabs 13, 14, bending of the ring 11 being facilitated by grooves 31, 32. Gas to drive the rotor 10 also passes via aperture 19 into chamber 18a in base 26 so as to push outwardly caging pin 20 and maintain the pin 16a in position. When the rotor speed is sufficient the gas-pressure in chamber 18a drops to allow spring 17 to retract the pin 16a and uncage the rotor 10 by relaxing of ring 11. Alternatively, a solenoid or pyrotechnic actuator may be employed to move pin 16a. In a second embodiment Figs. 6-12 (not shown) the unstressed configuration of the split ring corresponds to the caged state, the tabs being forced apart by a member incorporating a conical portion, the movement being effected by gas-pressure |
