Compasses

Question 1

What is a Direct reading compass?

Answer 1

Magnet freely suspended in space and will align with the earths magnetic field.

Question 2

Disadvantage of a Direct Indicating Compass?

Answer 2

Cannot give data to navigation system.

Data cannot be repeated to other stations on the aircraft.

Electrical systems can create magnetic fields which influence the compasses readings.

Question 3

What components does a remote indicating compass comprise of?

Answer 3

Magnetic Detector Unit

Displacement Gyro

Display

Question 4

How does GPS work?

Answer 4

Uses Trilateration from a number of satellites to fix the position of the receiver.

Question 5

Disadvantage of GPS?

Answer 5

Satellites can be switched off, signal jammed or sabotaged.

Question 6

Two characteristics of gyroscope?

Answer 6

Rigidity
Precission

Question 7

What is an artificial horizon?

Answer 7

Shows the pilot the pitch and roll attitude of the aircraft with respect to the horizon.

Question 8

Turn and slip Indicator show?

Answer 8

Lateral attitude

Direction and rate of turnabout its vertical axis

The amount of slip arising from an incorrect angle of bank

Question 9

Attitude and Direction Indicator

Answer 9

Same as an Artificial Horizon however this has a set of cursors that indicate a desired direction and attitude.