6. Landing Gear Systems

Question 1

What are the main functions of the LG?

Answer 1

• support aircraft at the required height and attitude while on ground
• absorb energy of landing and taxiing shocks
• handling of the aircraft on ground (retractable on flight)
• provide mounting for runway and taxi trun-off lights, towing and jacking attachments, aerodynamic fairings

Question 2

What is the name convention for LGs?

Answer 2

first 3 for wing gear
2nd 3 for body gear
from left to right:
number of gear types in tandem - gear type - number of main gear types in line (one side) - total number of body gear - gear type - number of body gear types in tandem

Question 3

What builds up a LG?

Answer 3

actuation system to retract and extend the LG
damping system - absorb landing and taxiing shocks
wheels and tires - carry heavy loads
braking system - mechanical braking for deceleration
steering system - gear steering for taxiing