Landing Gear Flashcards
On all aircraft equipped with retractable
landing gear, some means must be
provided to?
EXTEND THE LANDING GEAR IF THE NORMAL OPERATING MECHANISM FAILS
To prevent a very rapid extension of an
oleo shock strut after initial
compression resulting from a landing
impact, various types of what are used?
valves or orifices are used which restrict the reverse fluid flow
Fluid flow during shock strut operation is controlled by what?
The taper of the metering pin in the shock strut orifice
Some nose struts have an upper locating
____ to straighten _____ when extended
Cam, Gear
What is the function of a cam
incorporated in a nose gear shock strut?
STRAIGHTENS THE NOSEWHEEL
When servicing an Air/Oil shock strut
with________,the strut should be
collapsed and fluid______ at the filler
opening
MIL-5606
Added
A_____,______ or______ ring is
incorporated in a landing gear Oleo shock
strut to limit the extension stroke
Sleeve
Spacer
Bumper
When an empty shock strut is filled
with fluid, care should be taken to
extend and compress the strut
completely at least 2 times to…
Ensure proper packing ring seating and removal of air bubbles
IF STRUT SEEMS TO OPERATE NORMALLY
ON TAXI, BUT BOTTOMS ON LANDING, What is this an indication of?
FLUID LEVEL IS LOW
Instructions concerning the type of fluid
and amount of air pressure to be put in a
shock strut are found in…
Aircraft manufacturer’s service manual
Torque links maintains correct alignment of what?
The wheel & the strut
The purpose of a sequence valve in a
hydraulic retractable landing gear
system is to ensure operation of the
landing gear and gear doors in the
_______ _____
Proper order
A _____ switch is used to monitor the
position of each gear during all flight
operation
Limit
THE WARNING HORN, Warns the pilot that the…
landing gear is not down and locked and throttle retarded
• Horn sounds CONTINUOUSLY
When inspecting landing gear landing gear indicators, lights, and horns must also be…
Checked for proper operation
After performing maintenance on an
aircraft landing gear system, which
may have affected the systems
operation, it is usually necessary to
make an operational check with the _____ __ _____
Aircraft on Jacks
If the extended longitudinal axis of
the main gear wheel intersects aft of
the aircraft, the wheels can be termed
as having ___ ___
TOE-OUT
Master Cylinders are equipped with a ____________ ____ which allows fluid to return safely into the master cylinder
compensating port
Brakes can drag if compensating port becomes..
Clogged (slow to increase)
Power boost systems uses the____ _________ _______ as
power source
Main hydraulic pressure
Power boost systems are used on aircraft that have higher ______ _____
Landing Speeds
anti skid provides systems provides ______ _______ it is an _________ _________ _______
Maximum braking
Electro-Hydraulic System
The control unit can be regarded as the
brain of the ____ ____ ______
Anti-skid system
The CONTROL UNIT Receives the signal from the _____ _______. It determines if any of the wheels are
turning at a ______ speed than the others.
Wheel Sensors, Slower
THE CONTROL UNIT will send a signal to the ____ _______ _____
which relieves the _________ ________ on
the brake, This will allow the wheel to speed back up
to the speed of the other wheel.
Skid-control valve, hydraulic pressure
In an anti-skid system wheel skid is detected by an _________ _________ ______
Electrical Transducer Sensor
Anti-skid control valves are ____ - ______, electrically controlled hydraulic valves that respond to the input from the control unit
Fast-Acting
Anti-Skid control valves will adjust the amount of ________ ________ that will be applied to the brakes.
Hydraulic Pressure
In an ANTI-SKID CONTROL VALVE system, As pressure is adjusted to the brakes, deceleration slows to…
Within the range that provides the most effective braking without skidding
_____switch, ___ switch, & the landing gear ground safety switch, are all the
same switch just different names
Squat, Wow
Antiskid system is deactivated in the air by
_______ ____ safety switch
landing gear
TOUCHDOWN & LOCK WHEEL
PROTECTION typically functions in conjunction with
the wheel speed sensor and the air/ground
safety switch on the_______ ____ _____
Landing gear strut (Squat Switch)
Until the aircraft has______ __ ______, the
detector circuitry signals the anti-skid
control valve to open the passage between
the brakes and the hydraulic system
return, thus preventing pressure build-up
and application of the brakes
weight on wheels
When bleeding brakes, once air is gone you will have ____ _____ ______
Firm brake pedals
After bleeding aircraft brakes if
still soft or spongy it could be a
result of ____________ ________ _____
Deteriorating flexible hoses
Excessive wear in the shoulder area of an aircraft tire is an indication of
______________
Underservicing
Excessive wear in the center of the tread of an aircraft tire is an indication of
_____________
Overinflation
A tire may be recapped an __________ amount of times as long as the tire carcass remains serviceable
indefinite
In tire structures, what deflects runway water away
from rear mounted engines?
Chine
Tubes in newly installed tires must be first inflated and fully deflated, they are re-inflated to the correct pressure to allow the ____ __ ________ ______ correctly inside the tire.
Tube to position itself
When mounting tires, consult and follow Manufacturers service information all including 1)____ _______,2) ___________ and 3) ________ _____________, and 4) _________ _________
1)Bolt torques
2)Lubrication
3)Balancing requirements
4)Inflation procedures
The O-ring should be _________ and in good
condition to ensure it seals the wheel for
the entire life of the tire
Lubricated
A ___ ___ is used to locate the lightest part of
the tire, you should align the red dot with the heavy
part of the wheel
Red Dot
What is a stripe or mark applied to a wheel
rim and extending onto the sidewall
of a tube-type tire?
A slippage mark
Air leakage on a split _________ ____ wheel is
prevented by a packing between wheel halves
Tubeless type
What is a fusible plug?
A THERMAL PLUG THAT RELEASES AIR PRESSURE WHEN TIRE AIR TEMP IS TOO HIGH
