Landing Gear Flashcards
How do the rubber tiers earth the aircraft?
They contain carbon.
True or false : the nose wheel is much weaker than the main wheels?
True.
What twi techniques allow for an emergency gear deploy?
Gravity or pressurised nitrogen.
Spats cover gears. Why are they used?
To make the gear more aerodynamic,
Whats the difference between a main gear and a bogey gear?
Main gear is 2 wheel. Bogey gear is more than 2.
Where is 90% of the shock absorbed on landing, which is located in the landing gear?
Shock absorbers.
Instead of a spring, what do shock absorbers use?
Nitrogen.
What dampens the oscillating motion of the shock absorber in the aircraft undercarriage?
The oil.
When stationary, the gas pressure within the oleo strut, is equal to what?
The weight.
At heaver weights, can we see more or less fescalized portion on the oleo strut?
Less.
Where is the torque link on the landing gear?
Just above the wheel.
What is located within the side brace on the landing gear?
Landing lights.
Learn extension and retraction diagram
What so landing gear downlocks do?
They prevent ACCIDENTAL retraction cannot occur.
What type of pressure is required to release a landing gear uplock?
Hydraulic.
What type of locks prevent movement of the gear and has a remove before flight tag attached to them?
Ground lock.
When is an undercarriage leg experiencing the highest torsional load?
Tight man overs on the ground.
What does it mean if the landing gear light is green?
The landing gear is down.
When is VLO gear limiting speed used?
Doors open and gear down.
Which is a higher speed VLE or VLO for landing gear operating speed?
VLE.
How many degrees can a tiller steer the nose wheel?
75 degrees.
How can you reduce nose wheel shimmy?
Hydraulically lock the steering position.
What is the maximum speed for gear extension/retraction during normal operation? VLO OR VLE?
VLO.
The geometric or blank lock is mainly used as a down lock. It requires mechanical forces to unlock it; this locks can be formed by using the stays bracing the struts.
Overcentre.
True or false : During landing auto-brakes keep operating when idle reverse thrust is selected
True.
True or false : During landing and rejected take-off auto-brakes keep operating until the pilot presses the brake pedals
True
True or false : There is no need for a gust lock on reversible flight controls.
False
Overcentre mechanisms in landing gear systems are used to…
Lock the landing gear upon retraction
The nose-wheel steering system of a jet transport aeroplane can be controlled through the rudder pedals or a hand-wheel steering (tiller). When performing a blank blank during taxiing, an additional pilot action must be taken to avoid deflection of the nose wheel.
Rudder check
What is the higher permissible speed with the landing gear down? VLO/VLE
Vle
In the RTO mode maximum blank braking is applied.
Ant skid
