landing gear of an Aircraft

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General The A310 aircraft is equipped with a tricycle type landing gear with landing gear with direct -action shock absorbers,The LH and RH main gears and the nose gear are retractable under hydraulic power into wells closed off by gear doors. The main gear,like the wing under which it is installed,is specific to the A310.The main gear retracts inboard the gear structure being housed aft of the wing spar box.Two doors,mechanically linked to the gear structure and following gear movement at all times restore the wing lower surface profile.Each boogie beam,returned to the "aligned"position by a pitch damper,is equipped with 4 tire/ wheel/multiple disc brake unit assemblies.the boogie beam assemblies.The boogie beam assemblies are housed in the future adjacent to the hydraulics compartment.The fuselage profile is restored by two doors each operated by a hydraulic actuating cylinder. The nose gear wheels are hydraulically steerable on the ground.the nose gear retracts forward into the fuselage mechanically actuating two small doors which close off the aft part of the well.The forward part of the well is closed off by two doors each operated by a hydraulically actuating cylinder.A tail gear protects structure in the event of excessive nose pitch-up.