Inertial Navigation | System Contents

Question 1

The inertial sensor system contains the ___, ___, and a ___ to integrate the information and provide a value for distance travelled.

Answer 1

Stable Platform, Accelerometers, Computer

Question 2

CDU is AKA the ___

Answer 2

Inertial System Display Unit.

Question 3

The CDU is used for ___ information

Answer 3

inputting

Question 4

The ___ and __ are on the flight deck, whilst the ___ and ___ are in the aircraft

Answer 4

MSU CDU INU BU

Question 5

MSU is the __-

Answer 5

Mode Selector Unit

Question 6

CDU is the ___

Answer 6

Control Display Unit

Question 7

BU is the ___

Answer 7

Battery Unit

Question 8

INU is the ___

Answer 8

Inertial Navigation Unit

Question 9

There is a ___ warning light when the battery is flat

Answer 9

red

Question 10

An ALERT light may come on _ minutes prior to a turn

Answer 10

2

Question 11

The ___ button freezes the display

Answer 11

HOLD

Question 12

North alignment uses inputs from accelerometers and the ___ gyro

Answer 12

East

Question 13

The alignment process will take . minutes at the Equator

Answer 13

2.5

Question 14

The alignment process will take up to __ minutes at 70N or S

Answer 14

10

Question 15

During alignment, a 10 degree error in initial latitude will (not) be accepted, but one in longitude will (not)

Answer 15

not will

Question 16

___ is the normal flight mode

Answer 16

NAV

Question 17

___ mode is a backup which retains just attitude and heading information while realignment takes place

Answer 17

ATT

Question 18

A ___ IRS might be able to provide attitude and heading information following a loss of power.

Answer 18

strapdown

Question 19

Following a loss of IRS power in flight, the procedure is to switch to ___, and fly straight and level for a few minutes. If the FAIL flags disappear then the system may be used to attitude information.

Answer 19

ALIGN

Question 20

If the ALIGN light is ____, the IRS is in ALIGN mode, ATT mode, or is shutting down.

Answer 20

steady

Question 21

If the ALIGN light is flashing, alignment cannot be completed due to a code _, _, or _ error

Answer 21

3 4 8

Question 22

If the ALIGN light is ___, alignment may be completed (if the selector is at NAV), or the system may be off.

Answer 22

off

Question 23

If ___ ___ is illuminated, the IRS is working from battery bus

Answer 23

ON DC

Question 24

The right IRS is limited to ___ minutes

Answer 24

5

Question 25

On the ground, a ___ in the nose wheel well sounds to indicate a possible battery drain

Answer 25

horn