Pounds per square inch
Inches of mercury
Milibars of alcohol
Ounces of air
120000 to 140000 psi
150000 to 170000 psi
180000 to 200000 psi
210000 to 230000 psi
Up, left aileron trailing edge is up
Up, left aileron trailing edge is down
Down, left aileron trailing edge is up
Down, left aileron trailing edge is down
Increase lift and drag
Decrease lift and drag
Increase lift and decrease drag
Decrease lift and increase drag
Reduce the amount of lift
Prevent the aircraft from stalling
Correct minor deviation in flight alttitude
Improve augmented lateral control surface movement
Can be seen
Has constant volume
Cannot be compressed
Molecules, protons, neutrons
Protons, molecules, electrons
Molecules, neutrons, electrons
Protons, neutrons, electrons
Changing magnetic field
Transferring magnetic field
Low reluctance and low permeability
High reluctance and low permeability
High reluctande and high permeability
High permeabiltiy and low retentivity
Less the strength
Greater the strength
Higher the reluctance of the core
In the aircraft cabin
In the nose wheel well
In the utility compartments
As far as possible from the unit being protected
Blast air and ram air
Engine oil and blast air
Blast air and generator oil
Generator oil and engine oil
Less speed regulation than a universal motor
A field winding in a series with the armature
Low starting torque and good speed regulation
High starting torque and poor speed regulation
Liquids, gases, and minerals
Gases, solids, and minerals
Gases, solids, and organic
Liquids, gases, and solids
Passed the elastic limit
Lost the ability to expand
Failed to meet elastic limit.
Passed the compression limit
Ability to compress within its container
Ability to conform to the shape of its container
Relief valve in the lines
Piston pushing the fluid
Scupper pushing the fluid
Selector valve in the lines
4 cubic inches
40 cubic inches
400 cubic inches
4,000 cubic inches
Increasing velocity and viscosity.
Increasing volume and displacement
Creating resistance and loss of energy
Creating resistance and energy increase.
Store fluid and act as a surge chamber.
Restrict fluid-flow in selected directions
Pressurize and direct fluid to an actuator.
Replenish fluid, allow for thermal expansion, and provide a means of bleeding air from the system
Protect the pump.
Reserve fluid for the power pump
Reserve fluid for the emergency pump
Supply the pump during inverted flight.
Fluid-flow is created with each stroke of the pump handle
Fluid-flow is created with every other stroke of the pump handle
Double volume is displaced with each stroke of the pump handle
Double volume is displaced with every other stroke of the pump handle
They deliver low pressure
They have an integral compensator
The case drain relieves high system pressure
There is no angle between the drive shaft and cylinder block
Rotary mechanical motion
Kinetic flow motion.
In either direction
Hollow end toward the air side of the accumulator.
Hollow end toward the fluid side of the accumulator.
Drilled passage toward the air side of the accumulator
Tenths of an inch
Thousandths of an inch.
Millionths of an inch.
Billionths of an inch.
Return lines can join together
Pressure lines can join together
Common fluid lines can come together
Hydraulic test stand can be connected
A mechanical force
A constant velocity
An electromotive force
Cargo door system
Seat all four of the poppets.
Unseat all four of the poppets
Seat both of the pressure poppets
Unseat one pressure poppet and one return poppet
Ability to contain system pressure
Ability to relieve excess system pressure
Ability to reduce turbulence
Ability to increase turbulence
Selector valve has four ports.
Selector valve is more complex
Servo valve controls fluid-flow
Servo valve is electrically operated
Ball check valve
Gate check valve.
Cone check valve
Restrictor check valve
Show filter position within the system
Indicate left- and right-hand threading
Show the direction of free flow through the valve.
Indicate installation points in relation to the pump
Automatic check valve.
Restrictor check valve
Pump, actuator, filter, and priority valve
Pump, actuator, shutoff, and metering valve
Reservoir, pump, actuator, and metering valve
Reservoir, pump, actuator, and manual shutoff valve.
By the suction effect of the pump.
By gravity and the suction effect of the pump
In response to pressure demand and the suction effect of the pump.
Remains the same.
Reduce oscillation during extension
Reduce oscillation during retraction
Allow the inner cylinder to rotate within the outer cylinder
Prevent the inner cylinder from rotating within the outer cylinder
By push-pull rods
By a cable system.
Through hydraulic pressure
A steer damper
An uplock control
A downlock control
A servo oscillating damper
Orifice check valve
Alert the pilot to marker beacons.
Sound when gear is not safe
Sound when gear is safe.
Alert the pilot to a stall
Loss due to overheating
Increase due to overheating
Loss due to pressure increase
Increase due to pressure reduction
Warp when overheated
Shatter during hard landings
Must be adjusted after each landing
Do not provide maximum stopping grip.
Reduce friction between the wheel and tire.
Increase friction between the wheel and tire
Prevent wheel skid by applying pressure to the skidding wheel
Prevent wheel skid by releasing pressure from the skidding wheel.
Decrease fluid volume
Reduce braking pressure.
Enlarge running clearance
Increase braking pressure
Steel and/or titanium alloys
Chromium and/or titanium alloys
Paladium and/or aluminum alloys
Magnesium and/or aluminum alloys
As an assembly
Individually by halves
By a self-balancing system
A rubber liner.
An O-ring seal.
A phenolic ring.
Machined mated surfaces
Wheel valve stems
Thermal relief plugs
A fiber brush
A wire brush
Cord body, and beads
Valve core, and beads.
Cord body, vent holes
Valve core, and cord body.
Blow out valves