Below are featured the wheeled undercarriage (also called landing gear) arrangements of some modern commercial jet airliners and large military aircraft.
Types of wheeled units This table shows the main types of individual, basic wheeled units (single-wheel unit or bogies composed of multiple wheels) used on most aircraft undercarriages.
Symbol Wheeled unit Example 2 wheels, 1 axle 4 wheels, 2 axles 6 wheels, 3 axles 14 wheels, 7 axles
The tables below show how various types of wheeled units are arranged to form the undercarriages of some popular aircraft from manufacturers Antonov, Airbus, and Boeing.
Antonov Aircraft Wheels andConfiguration Nose section Center section Example An-225 32 wheels[2x2]+[2x14]
Airbus
Aircraft Wheels andConfiguration Nose section Center section Example A318, A319, A320, A321 (standard)6 wheels[1x2]+[2x2] A300, A310, A320, A330, A350-90010 wheels[1x2]+[2x4] A340-200/30012 wheels[1x2]+[2x4+1x2] A340-500/60014 wheels[1x2]+[3x4] A350-100014 wheels[1x2]+[2x6] A38022 wheels[1x2]+[2x4+2x6]
Boeing
Aircraft Wheels andConfiguration Nose section Center section Example 717, 727, 7376 wheels[1x2]+[2x2] 74718 wheels[1x2]+[4x4] 707, 720, 757, 767, 787 10 wheels[1x2]+[2x4] 77714 wheels[1x2]+[2x6] B-52 Stratofortress8 main wheels plus 2 outrigger wheels[2x2]+[2x2]
References