Aircraft Landing Gear Systems Flashcards

1
Q

What are two sources of power used to extend and retract landing gear?

A

Hydraulic and Electric.

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2
Q

When should landing gear retraction checks be accomplished?

A

(1) 100 hour or annual inspection, (2) hard landing, or (3) replacement of any landing gear components.

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3
Q

What is used to inflate an oleo type landing gear shock strut?

A

High pressure dry air or nitrogen source.

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4
Q

Where would you look to find proper tire inflation information?

A

Aircraft Maintenance Manual or Operations Manual based on gross weight.

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5
Q

What is the purpose of a hydraulic shimmy damper?

A

Designed to prevent nose wheel vibration (shimmy) during taxiing, landing or takeoff.

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6
Q

What type of care should be given to landing gear shock struts?

A

Inspected regularly: check for fluid leakage and proper extension, wiped clean daily and checked for scoring and corrosion.

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7
Q

What is the effect of under inflated tires?

A

Creep or slip when landing or applying breaks. Rapid uneven wear at or near edges of the tread.

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8
Q

What is the purpose of the rubber o-ring mounted on the mating surface of the outer wheel of a split type wheel?

A

To seal the wheel and prevent air leakage for tubeless tires.

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9
Q

What are three types of aircraft break systems?

A

Independent, power boost, and power control types.

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10
Q

What is the purpose of a shuttle valve in a power control system?

A

Under emergency conditions, the shuttle valve allows the emergency fluid to actuate the brakes, emergency fluid pressure moving the shuttle to the opposite end of the valve, cutting off normal brake fluid.

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11
Q

What component in the landing gear system keeps the landing gear in alignment?

A

The landing gear torque links.

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12
Q

What is used to prevent a nose gear from being retract with the wheel out of the center position?

A

An internal centering cam or an external track.

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13
Q

What is the purpose of the fusible plug in some aircraft wheels?

A

To prevent an over-temperature condition from blowing a tire or breaking the wheel by melting the plug and relieving air pressure.

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14
Q

What is purpose of the anti-skid system?

A

To bring the aircraft to a stop without skidding under all types of runway conditions.

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15
Q

What are the two methods of bleeding breaks?

A

Gravity and Pressure methods.

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16
Q

When inspecting brakes, what do you look for?

A

Leaks under pressure, hoses for cracks, swelling or soft spots, and spongy actuation (air in the system).

17
Q

What do you do before disassembling an oleo strut?

A

Relieve piston air pressure and equalize to atmosphere.