Artificial Horizon | Electrical Version Flashcards
In the electrical version, ___ torque motors are used. One is ___ to the lateral axis and one is ___ to the longitudinal axis
2 parallel parallel
The lateral torque motor detects movement in ___, and a correction is applied to the ___ axis
roll pitch
Displacement in ___ is detected by the longitudinal switch, and correction is applied around the ___ axis.
pitch roll
The mercury switches that sense the topple of the spin axis in the fore and aft plane athwartships are on the ___ gimbal.
inner
The torque motor associated with the fore and aft one is attached to the outer gimbals, it applies a torque about the ___ axis, which is then preccessed to act about the ___ axis
roll, pitch
The torque motor associated with the athwartships mercury switch applies a force about the ___ axis, which is precessed to act about the ___ axis
pitch, roll
Levelling switches are sealed glass tubes containing _ electrodes with a little bit of mercury.
3
The glass tubes are ___ to each other behind the gyro housing
perpendicular
In normal operation, the mercury is in contact with the ___ electrode, which is connected to the reference winding
centre
With displacement, the ___ touches one of the side electrodes, which complete a circuit to the control winding to apply the correct torque correction
mercury
The voltage to the reference winding is fed via a ___
capacitor
There is no capacitance in the control winding, so it lags behind the reference winding by __ degrees
90
The resulting magnetic field rotates the stator in the required direction, cutting the conductor in the wing and inducing a further magnetic field that makes the rotor __ the stator field
follow
The rotor following the stator field is opposed, as the rotor is fixed in the case. A __ ___ is set up to cause the required amount of precession to correct the instrument
reactive torque
