AGK Systems - Landing Gear

Question 1

Landing Gear Types

Answer 1

Fixed

Retractable

Tri-Cycle

Conventional (Tail Drawing or Tail Wheel)

Question 3

What is the ‘Oleo Strut”

Answer 3

Landing gear legs (Oleo Strut) are hydro-pneumatic shock absorbers that reduce and absorb the stresses encountered during landing

Question 4

Oleo Strut characteristics

Answer 4

Incorporates a hydraulic damper valve and a separator piston

Damper controls the flow of oil which regulates compression and extension

Upper most section is Nitrogen filled, compressed Nitrogen its as a spring

When a/c is on the ground, Nitrogen and oil pressure are equal

Nitrogen bears the weight ion the a/c when its on the ground

Question 5

What oil is used in Oleo struts?

Answer 5

Mineral Hydraulic Oil - DTD 585 (Red)

Question 6

Answer 6

Question 7

Oleo Leg

Answer 7

Absorbs loads and dampen rebound

Question 8

Wheel Axles

Answer 8

Allow heels to rotate freely

Question 9

Bogie

Answer 9

Wheel axles connected to a central beam

Question 10

Drag Strut

Answer 10

Brace the assembly against shock loads

Question 11

Side Stay

Answer 11

Braces the assembly against side loads during taxiing and landing

Question 12

Gear Doors

Answer 12

Aerodynamic closures to landing gear brays

Question 13

Torque links

Answer 13

Prevent rotation of the inner Oleo cylinder

Allows the Oleo to be telescopic whilst preventing the two sections rotating independently - also known as Scissor links

Question 14

Nose Wheel

Answer 14

Automatic self centering

Shimmy Protection

Question 15

Nose Wheel Assembly

Answer 15

Question 16

Whats the first thing that happens when retracting the main gear?

Answer 16

Boggies level and then the doors open

Question 17

What is Nose Wheel Shimmy?

Answer 17

lateral occupation along the longitudinal axis (a wobble)