B - Artificial horizon/attitude indicator (05-06-18)

Question 1

What is the orientation of the gyro in an AI?

Answer 1

Vertical with respect to the earth

Question 2

Which direction should be assumed for the spin of th gyro in an AI?

Answer 2

Anti-clockwise when viewed from above

Question 3

How is the gyro tied to the earth in an air driven AI?

Answer 3

With pendulous vanes that direct airflow in a way to create a force that is precessed in a way that realigns the gyro.

Question 4

How is the gyro kept in alignment when stopped?

Answer 4

A weighted rotor housing causes CG to be below the pivot point

Question 5

What error in indication will occur in an AI during an acceleration?

Answer 5

A climbing right turn

Question 6

What error in indication will occur during a deceleration in an AI?

Answer 6

A descending left turn.

Question 7

What error in indication will occur during a right turn on an AI?

Answer 7

Pitch up with under read AoB for 180deg then over read AoB

Question 8

What error in indication will occur during a left turn on an AI?

Answer 8

Pitch down with under reading AoB for 180deg then over read AoB

Question 9

How is an electrically driven AI gyro kept erect?

Answer 9

With 2 mercury levelling switches along with 2 mercury cut out switches to ensure instrument wont just align with aircraft.

Question 10

What are the manoeuvring limits for an air driven AI?

Answer 10

+/- 60deg in pitch

+/- 110deg in roll

Question 11

What are the manoeuvring limits for an electric driven AI?

Answer 11

+/- 85deg in pitch

no limit in roll