Aircraft Landing Gear Systems Flashcards
(83 cards)
Exposure to and/or storage near which of the following is considered harmful to aircraft tires?
Fuel, oil, ozone, electrical equipment, hydraulic fluid and solvents
What would be the effect if the piston return spring broke in a brake master cylinder?
The brakes would drag
In brake service work, the term ‘bleeding brakes’ is the process of
withdrawing fluid from the system from the purpose of removing air that has entered the system
To prevent a very rapid extension of an oleo shock strut after initial compression resulting from landing impact
various types of valves or orifices are used which restrict the reverse fluid flow
A pilot reports the right brake on an aircraft is spongy when then the brake pedal is depressed in a normal manner. The probable cause is
air in the brake hydraulic system
Aside from an external leak in the line, what will cause parking brakes to creep continually to the OFF position?
An internal leak in the master cylinder
Why do most aircraft tire manufacturers recommend that the tubes in newly installed tires be first inflated, fully deflated and reinflated to correct pressure?
To allow the tube to position itself correctly inside the tire
The metering pins in oleo shock strut serve to
retard the flow of oil as the struts are compressed
What action should be taken whenever maintenance is performed that will affect the landing gear system performance?
The aircraft should be placed on jacks and a retraction test should be performed
When working with high pressure, high performance tires, why is it recommended to deflate tires when removing wheels from the axle
To ensure safety in case of defective wheel or broken tie bolts
The braking action of a cleveland disk brake is accomplished by compressing a rotating brake disk between two brake linings. How is equal pressure on both sides of the disk assured?
By allowing the caliper to float to automatically equalize as pressure is applied to the rotor
If it determined that spongy brake action is not caused by air in the brake system, what is the next most likely cause?
Deteriorated brake hose
Many brake types can be adapted to operate mechanically or hydraulically. Which type is not adaptable to mechanical operation?
Expander tube type
A brake debooster valve is installed in systems where the high pressure of the hydraulic system (3000 PSI) is used to operate brakes
that are designed to work with lower pressure
A stripe or mark applied to a wheel rim and extending onto a sidewall of a tube type tire is a
slippage mark
When bleeding aircraft brakes, one of the indications that the air has been purged from the system is
firm brake pedals
Overinflated aircraft tires may cause damage to the
wheel flange
Debooster valves are used in brake systems to
reduce the pressure and release the brakes rapidly
The repair for an out of tolerance toe-in condition of main landing gear wheels determined not to be the result of bent or twisted components consists of
inserting, removing or changing the location of washers or spacers at the centre pivotal point of the scissor torque links
On a air valve core stem, what indicates high pressure type
embossed letter ‘H’
The primary purpose for balancing aircraft wheel assemblies is to
prevent heavy spots and reduce vibration
Power boost brake systems are used on aircraft that have
high landing speeds
On all aircraft equipped with retractable landing gear, some means must be provided to
extend the landing gear if the normal operating mechanism fails
An automatic damping action occurs as the steer damper if for any reason the flow of high pressure fluid is removed from the
inlet of the steering damper
