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2. Bogie - Wikipedia

   en.wikipedia.org/wiki/Bogie

   In trucking, a bogie is the subassembly of axles and wheels that supports a semi-trailer, whether permanently attached to the frame (as on a single trailer) or making up the dolly that can be hitched and unhitched as needed when hitching up a second or third semi-trailer (as when pulling doubles or triples).

3. Undercarriage arrangements - Wikipedia

   en.wikipedia.org/wiki/Undercarriage_arrangements

   Airbus A380 nose landing gear (consisting of a single 2-wheel bogie) 4 wheels, 2 axles: An Airbus A330's main landing gear (consisting of two 4-wheel bogies) 6 wheels, 3 axles: A Boeing 777's main landing gear (consisting of two 6-wheel bogies) 14 wheels, 7 axles: The Antonov An-225's main landing gear (consisting of two 14-wheel bogies)

4. Landing gear - Wikipedia

   en.wikipedia.org/wiki/Landing_gear

   The landing gear represents 2.5 to 5% of the maximum takeoff weight (MTOW) and 1.5 to 1.75% of the aircraft cost, but 20% of the airframe direct maintenance cost. A suitably-designed wheel can support 30 t (66,000 lb), tolerate a ground speed of 300 km/h and roll a distance of 500,000 km (310,000 mi) ; it has a 20,000 hours time between overhaul and a 60,000 hours or 20 year life time.

5. Recreational vehicle terms - Wikipedia

   en.wikipedia.org/wiki/Recreational_vehicle_terms

   It is usually a tripod that attaches to the king-pin of the fifth-wheel trailer hitch. Most are adjustable with a hand crank. Landing gear On a fifth-wheel trailer these are two jacks that are usually coupled together and are motor driven, that lift the front of the fifth-wheel trailer up so that the truck can be driven under the front and ...

6. Trailing-arm suspension - Wikipedia

   en.wikipedia.org/wiki/Trailing-arm_suspension

   These are typically used on the rear axle or wheels of vehicles, but also found in both front and main landing gear of aircraft. A "semi trailing-arm" (or semi trailing-link) is a common form of independent rear suspension on automobiles, particularly those with front wheel drive (where it allows a flatter rear floor pan).

7. Oleo strut - Wikipedia

   en.wikipedia.org/wiki/Oleo_strut

   An oleo strut is a pneumatic air–oil hydraulic shock absorber used on the landing gear of most large aircraft and many smaller ones. [1] This design cushions the impacts of landing and damps out vertical oscillations.