32 landing gear Flashcards
what are the subdivisions of the 32 landing gear system
main gear and doors (not structural component of door)
nose gear and doors (not structural component of door)
wheels and brakes
extension and retraction system
steering system
position and indication system
supplementary gear
what type are shock absorbers?
oleo-pneumatic
which direction do LG retract
main : outward
nose: front
which hydraulic system is landing gear on (gear and doors)
green
free fall extnsion sstems
mechanical linkages open doors and let gravity extend them
normal operation of braking system
can be set automatically to low, med, or max
can override this b pedals (for differential braking)
BSCU (brake and steering control unit) controls this
hydraulic line for alternate braking
yellow
how does parking brake system work?
accumulator in alternate braking system (yellow)
how does operation of the MLG work?
lever to L/G up will:
- hydraulically open doors,
- BSCU puts on brakes
- hydraulically lifted
- doors close
nose key point: when shock absorber extended (during take off for large angle), BSCU disallows steering
what controls extension and retraction ? How?
LGCIU (andign gear control and indication unit)
-position data from proximity sensors
what monitors brake temp? how?
BTMU (brake temperature monitoring unit) -> temp sensors
-brake cooling system
