Inertial Navigation | System Contents Flashcards
The inertial sensor system contains the ___, ___, and a ___ to integrate the information and provide a value for distance travelled.
Stable Platform, Accelerometers, Computer
CDU is AKA the ___
Inertial System Display Unit.
The CDU is used for ___ information
inputting
The ___ and __ are on the flight deck, whilst the ___ and ___ are in the aircraft
MSU CDU INU BU
MSU is the __-
Mode Selector Unit
CDU is the ___
Control Display Unit
BU is the ___
Battery Unit
INU is the ___
Inertial Navigation Unit
There is a ___ warning light when the battery is flat
red
An ALERT light may come on _ minutes prior to a turn
2
The ___ button freezes the display
HOLD
North alignment uses inputs from accelerometers and the ___ gyro
East
The alignment process will take . minutes at the Equator
2.5
The alignment process will take up to __ minutes at 70N or S
10
During alignment, a 10 degree error in initial latitude will (not) be accepted, but one in longitude will (not)
not will
___ is the normal flight mode
NAV
___ mode is a backup which retains just attitude and heading information while realignment takes place
ATT
A ___ IRS might be able to provide attitude and heading information following a loss of power.
strapdown
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.
ALIGN
If the ALIGN light is ____, the IRS is in ALIGN mode, ATT mode, or is shutting down.
steady
If the ALIGN light is flashing, alignment cannot be completed due to a code _, _, or _ error
3 4 8
If the ALIGN light is ___, alignment may be completed (if the selector is at NAV), or the system may be off.
off
If ___ ___ is illuminated, the IRS is working from battery bus
ON DC
The right IRS is limited to ___ minutes
5
