truck beam

plural truck beams

1. aeronauticsA fore-and-aft horizontal beam at the lower end of the gear strut of a multi-axle landing gear bogie, upon which are mounted the multiple axles of the bogie.

   1 more example

   [A Boeing 777 main landing gear assembly] comprises a shock strut, at the top of which is the MLG trunnion; at the lower end is a truck beam with three axles and six wheels. The truck beam rotates in pitch about a pivot at the base of the shock strut and a truck position actuator tilts the truck when the aircraft is airborne.

   2010 February 9, Air Accidents Investigation Branch, “1.6.13 Landing gear”, in Report on the accident to Boeing 777-236ER, G-YMMM, at London Heathrow Airport on 17 January 2008, archived from the original on 12 Apr 2022, page 28