REMOTE INDICATING MAGNETIC COMPASS

Question 1

1 A gyro-magnetic compass or magnetic heading reference unit is an assembly which always consists of :
1- a directional gyro
2- a vertical axis gyro
3- an earth’s magnetic field detector 4- an azimuth control
5- a synchronising control
The combination of correct statements is :

Answer 1

b 1, 3 and 5

Question 2

2 A slaved directional gyro derives its directional signal from:

Answer 2

c the flux valve

Question 3

3 The gyro-magnetic compass torque motor:

Answer 3

a causes the directional gyro unit to precess

Question 4

4 The heading information originating from the gyro-magnetic compass flux valve is sent to:

Answer 4

a error detector

Question 5

5 The input signal of the amplifier of the gyro-magnetic compass resetting device originates from the:

Answer 5

b error detector

Question 6

6 Heading information from the gyro-magnetic compass flux gate is transmitted to the:

Answer 6

b error detector

Question 7

A flux valve senses the changes in orientation of the horizontal component of the earth’s magnetic field :
1- the flux valve is made of a pair of soft iron bars
2- the primary coils are fed AC voltage
3- the information can be used by a “flux gate” compass or a directional gyro 4- the flux gate valve casing is dependent on the aircraft three inertial axis
5- the accuracy of the value of the magnetic field indication is less than 0.5%
The combination of correct statements is :

Answer 7

a 2, 3 and 5