block 09 Landing Gear Systems Quiz 1

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Toe-in on an aircraft equipped with an oleo landing gear may be adjusted by inserting, removing, or changing washers, shims, or spacers:

At the center of the two arms of the torque links.

What component is used in the shock strut to retard the flow of hydraulic fluid during compression?

Metering pin.

All aircraft equipped with retractable landing gear must incorporate some means to:

extend the landing gear if the normal method fails.

The raised, or embossed, "H" on the stem of an air-valve core means that this is a:

high-pressure valve.

The seals used in a landing gear shock strut are made of a material that is compatible with:

only the type of fluid used in the strut.

Which of the following components allows a free flow of fluid in one direction and restricts that flow in the opposite direction?

orifice check valve.

Various types of valves and orifices are used inside an oleo strut to:

prevent a rapid extension of the strut after the initial landing impact.

If a shock strut bottoms during landing:

the fluid level is probably low.

The initial landing impact is cushioned in an air-oil shock strut by:

the nitrogen/shop air charge being compressed.

The amount of extension of an oleo strut is measured to determine:

the proper operating position of the strut.

On some shock struts, a chevron seal is used to seal the sliding portions of the strut; the seal is installed:

with the open side of the seal facing toward fluid pressure.

A hydraulic "power-pack" is a small, self-contained hydraulic system that includes:

all the hydraulic components in one easy-to-service unit.

When servicing an air/oil strut with MIL-5606 fluid, the strut should be:

collapsed, then fluid is added at the filler opening.

A sleeve, snubbing device, or bumper is incorporated inside an air-oil shock strut to:

limit the rebound at the 2nd of the compression stroke.

The torque links that attach the piston (lower cylinder) to the fixed upper cylinder of a landing gear oleo strut:

maintains correct wheel alignment.

The oil level in an oleo strut is checked by releasing the nitrogen/shop-air charge from the strut and:

making sure that the hydraulic fluid is to the level of the service valve port.

When a shock strut has been filled with fluid, it should be extended and compressed at least twice to be sure that:

seals are sealed and the air is out of the fluid.

Aircraft landing gear that are retracted and lowered with an electric motor use a:

split-field series-wound motor.

Many retractable landing gears use a centering cam to:

straighten the nose wheel so it will go into the wheel well properly when retracting.


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