Gyroscopic Instruments

Question 1

Two principles of a gyroscope

Answer 1

The two principles of a gyroscope are : rigidity in space and precession

Question 2

Attitude Indicator

Answer 2

Operates on the principle of rigidity in space - shows bank and pitch information. Should show correct attitude within 5 minutes of starting engine. Normally vacuum driven but may be electric.

errors include:
acceleration (pitch up)/ deceleration (pitch down) errors.

roll-out errors (following a 180 degree turn - may show turn in opposite direction)

Question 3

Heading indicator

Answer 3

Operates on rigidity in space. Must be calibrated with compass at beginning of flight and recalibrated from time to time. THOUGH it may be “slaved” to a magnetic heading source such as a flux gate. Normally vacuum operated.

Question 4

Turn Indicator

Answer 4

operates on the principle of precession.
Turn coordinator shows rate of turn and rate of roll

turn and slip indicator shows rate of turn only.