| 摘要 |
The gyrocompass comprises a case with a gimbal mounted in it and a gyro including a second gimbal journalled in the first gimbal for displacement about a second axis. The gyro is initially in a gyrocompassing mode, the gyro having an input axis which moves in a plane defined by the longitudinal and lateral axes of the vehicle. The first gimbal is displaced about the first axis, and a device is coupled to the first gimbal and is responsive to the displacement about the first axis for providing signals corresponding to the displacement of the longitudinal axis of the vehicle from true north. The signals correspond to the heading of the vehicle. A device is coupled to the second gimbal for rotating the gyro input axis ninety degrees, with the gyro stabilising the displacement of the first gimbal about the first axis and is rendered in a navigation mode.
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