Aircraft landing gear systems Flashcards
What are two sources of power used to extend and retract landing gear
Electrical and hydraulic
When should landing gear retraction checkless be accomplished
During annual and other type inspections, after replacing landing gear components, and after any hard landing
What is used to inflate and olio type Landing gear shock strut
Inflate the strut with high pressure source of dry air or nitrogen
Where would you look to find proper tire inflation information
It is determined by factors like tire size, outside air temperature, and the gross weight of the aircraft.
Specific tire inflation information may be found in the operation manual and the aircraft maintenance manual in special tire inflation pressure charts based on gross weight
What is the purpose of a hydraulic shimmy damper
It is a unit designed to prevent nose wheel vibrations or shimmy during taxiing, landing or takeoff
What type of care should be given to landing gear shocks struts
They should be inspected regularly for leakage of fluid and for proper extension. The exposed portion of the strut piston should be wiped clean daily and inspected for scoring or corrosion
What is the effect of under inflation tires
Under inflated tires are more likely to creep or slip on the wheel When landing or when brakes are applied. Under inflation also causes rapid, uneven wear at or near the edge of the tread
What is the purpose of the rubber O-ring mounted on the meeting surface of the outer wheel half of a split type wheel
To prevent air leakage from the tubeless tire use with this wheel
What are three types of aircraft brake systems
Independent, power boosted, power control type
What is the purpose of a shut off valve in a power control system
Power brake systems incorporate a shuttle valve for the purpose of isolating the emergency brake system from the normal brake system
When emergency brake actuating pressure enters the shut off valve, the shuttle is systematically moved to the opposite end of the valve. This closes off the normal hydraulic brake system actuating line and allows the emergency fluid to actuate the brakes
What component in the landing gear system keeps the landing gear in alignment
Landing gear torque links
What is used to prevent a nose gear from being retracted well the wheel is out of center position
The centering device
Such as an internal centering cam or an external track that’s straighten the nose wheel before it enters the wheel well
What is used in a split wheel assembly to keep the air from leaking out between the wheel have
O ring
What is the purpose of a fusible plug in some aircraft wheels
It is designed to melt at a specific elevated temperature and relieve air pressure to prevent the tire from blowing out or damaging the wheel
How’s your aircraft tires be stored
Cold, dry place away from chemicals, oil or sunlight
