Attitude Indicator

Question 1

Attitude indicator

Answer 1

Angular displacement pitch and roll

Question 2

EADI

Answer 2

Electronic ADI and form part of the electric flight information system

Question 3

Classic instrumnet

Answer 3

Is the older attitude indicator(pneoumatic)

Question 4

AI

Answer 4

Vertically tied gyro or earth gyro
Pitch and roll

Question 5

Inidcation limits

Answer 5

Pneaumatic:
~picth +/- 60
~rolll +/- 110

Electric :
~pitch +/- 85
Roll unlimited

Question 6

Intial erection

Answer 6

Coarse alignment by the low CofG of the pendiculous unit

Fine aligmnet by the action of the penduluos vanes

Answer 7

Electrically driven AI gyro tied to the vertical by:
Two mercury level swithces
Two torque motors

Question 8

Mercury tilt switch electric AI

Answer 8

The tilt switch has a central contactor
There are two additional contactors

The mercury flows beyond the inner contactor
Isolates the system during manoevres (large acceleration)

Question 9

Fast erect

Answer 9

Fast erect button connects power to the relevant torque motor.

Because it is a t a higher voltage than the normal system the gyro will erect rapidly.used when on th eground or when in straight level and unaccelrated

Question 10

AI errors

Answer 10

Pendulous
Erection

Question 11

Pendlous error (air driven)

Answer 11

Pendulous errors: the pendoulus unit
Longitudnal or later accelaration causes an indicator error

Question 12

Erection error (air driven)

Answer 12

Erection errors: pendulous vanes
Longitudinal or lateral acceleration causes an indication error

Question 13

Errors AI ,anticlockwise (classic)

Answer 13

Acceleration causes an indiation of pitch up
Decelartion causes an indicaion of picth down

Answer 14

90 U. Over reads
180 C. Over reads
270 O. Over reads
360 C. Ccorrect

Question 15

Electrically driven errors

Answer 15

~acceleration, causing an indication of pitch up
~deceleration, causing an indication of pitch down
When turning the AI may under read