Hydraulics

What kind of servo-actuator is in the Bell 222

Combination of spool-type selector valve and linear actuator

The correct inflation pressure for an aircraft tire can be obtained from

In the aircraft service manual.

An emergency supply of fluid is often retained in the main hydraulic system reservoir by the use of a standpipe. The supply line is connected to the

Inlet of the emergency pump

The variable displacement piston pump uses _______ to adjust the position of the swashplate to vary its output

System pressure

How are the servo-actuators in the Bell 222 flight control system arranged

The servos are in parallel with eachother

When working with high pressure, high performance tires, why is it recommended to deflate the tires when removing wheels from the axel

To ensure safety in case of a defective wheel or broken wheel bolts

What kind of pump does the Bell 222 have

Variable displacement piston pump

The fusible plugs installed in some aircraft wheels will

melt at a specified elevated temperature

Many hydraulic reservoirs contain a small quantity of fluid which is not available to the main system pump. This fluid is retained to

supply fluid to the auxiliary pump

Why do most aircraft tire manufacturers recommend that the tubes in newly installed tires be first inflated, fully deflated, and then reinflated to the correct pressure?

to allow the tube to position itself correctly inside the tire

The spool valves in the Bell 222 servo-actuators are controlled by

Pilot input

Which type of hydraulic pump is most often used in high pressure systems

Piston

Which component in the Bell 222 hydraulic system regulates the system pressure

Pump

What safety device is located b/w the driving unit and hydraulic pump shaft?

Pump drive coupling shear section

The servo-actuators on the Bell 222 utilize a ____ type selector valve

Spool

Most variable displacement aircraft hydraulic pumps in use

contain a built-in means of system pressure regulation.

Chines are used on some aircraft nose wheel tires to help

deflect water away from the fuselage

Hydraulic fluid filtering elements constructed of porous paper are normally

discarded at regular intervals and replaced with new filtering elements

Overinflated aircraft tires may cause damage to the

wheel flange