Card Set Information
Volume 2. Part 2.
If 50 pounds per square inch (PSI) of cylinder pressure acts on a 5 square inch piston head, what will the resulting force be?
When an 8 square inch piston moves 5 inches within a cylinder, what volume of liquid is displaced?
40 cubic inches
Turbulence affects fluid flow in a hydraulic line by...
creating resistance and loss of energy.
A tube whose cross section area is gradually reduced to a smaller sized diameter is called a...
The purposes of a hydraulic reservoir are to...
replenish fluid, allow for thermal expansion, and provide a means of bleeding air from the system
The purpose of a stand-pipe in a reservoir is to...
reserve fluid for the emergency pump.
The amount of fluid a pump produces on each cycle or revolution is called its
When referring to hydraulic hand pumps, double action means
Fluid flow is created with each stroke of the pump handle.
Variable volume pumps do not require a separate regulating device in the system because
They have an integral compensator.
What provides for cooler operation in a stratopower variable volume hydraulic pump?
In the strato-power variable vol. pump, what holds the pistons in contact with the cam plate?
The purpose of a hydraulic motor is to convert hydraulic pressure into
rotary mechanical motion.
How is the piston installed in an accumulator?
Hollow end toward the air side of the accumulator.
The size of 1 micron is 4...
Millionths of an inch.
In a hydraulic system, the hydraulic manifold provides a location where the..
common fluid lines can come together.
The purpose of an actuating cylinder is to transform fluid pressure into...
a mechanical force
What pneudraulic system component uses a single acting actuating cylinder?
What pneudraulic system component uses a double acting balanced actuating cylinder?
Nose wheel steering
Which actuating type slows down piston travel when the piston nears either end of the cylinder?
A manual poppet type selector valve is in a working position when the cam shaft is rotated to
unseat 1 pressure poppet and 1 return poppet.
A major advantage of the manual slide type hydraulic selector valve is its...
normally, what positions hydraulic selector valves?
The advantage of the electrically controlled solenoid valve is its...
The difference between selector valve and a servo valve is that the...
Servo valve controls fluid flow.
Another name for a flapper check valve is...
Gate check valve.
What is the purpose of the arrow on a check valve?
Shows direction of free-flow through the valve.
Which of these allow normal operating speed of a hydraulic actuator in one direction while LIMITING speed in the Other direction?
Restrictor check valve
What are the basic units of the hydraulic hand pump system?
Reservoir, pump, actuator, and a manual shut-off valve.
The reservoir supplies hydraulic fluid to a handpump...
by gravity and the suction effect of the pump.
When pressure in a hydraulic system with a variable volume pump increases, the fluid flow...
The purpose of the torsion links on a main landing gear is to..
prevent the inner cylinder from rotating within the outer cylinder.
how is the motion of the landing gear control level transmitted to the selector valve?
by a cable system
what prevents the lock solenoid from energizing when the nose landing gear is off center?
electromagnetic devices capable of sensing magnetically conducive metal targets on landing gears are known as...
a unit that is a combination of the landing gear shimmy damper and steering unit is known as?
a steer damper
what position must the landing gear control handle be in before emergency extension of the landing gear?
what slows the free fall of the main landing gear during the emergency extension sequence?
the purpose of the landing gear warning horn is to...
sound when gear is not safe
brake fade is defined as a gradual braking action...
loss due to overheating
a major disadvantage of multiple disc brakes is that they...
warp when overheated
what automatically compensates for brake wear on the segmented rotor brake?
the purpose in the anti skid system is to?
prevent wheel skid by releasing pressure from the skidding wheel
the purpose of deboosters is to...
reduce braking pressure
aircraft wheels are normally constructed of...
magnesium and/or aluminum alloys
split wheels are balanced...
individually by halves
what maintains an airtight seal between split wheel halves?
An O-Ring seal
what prevents tire explosion from excessive heat buildup?
Thermal relief plugs
what are the type of bearings used on aircraft wheels?
the bearing cone of an aircraft wheel bearing is also called the...
when cleaning aircraft wheels, you should NOT use...
a Wire brush
installing bearing races should be free of scratches, dents, and...
the main parts of an aircraft tire are the tread and sidewall,...
cord body, and beads
what prevents pressure buildup and separation of cord plies of tread rubber on an aircraft tire?
for tires 24 inches or greater outside diameter, the tire must be removed when wear reaches the bottom of any tread grove for a continuous length of...