Are there gears in a aircraft landing gear?

depends, small aircraft can have chains and gears or electric operated gear, whereas large a/c have hydraulic powered gear.

Answer

Aircraft landing gears can have gears similiar to a car's rack and pinnion steering mechanism that turns the lower piston of the Nose landing gear. The rack and pinnion would be operated with hydraulic pressure. Reference Airbus airliners.

The first answer seems to refer to the retract mechanism. Most gears are retracted and extended using some hydraulic power and the kinematic design of the strut and its links and pivot points.

The Concord had a mechanism that pulled up the Main landing gear to make it shorter just before it rotated into the wheel well during Retraction. Otherwise, the gear was too long to go inside the wheel well. I'm not sure exactly how this worked but I think it was with the use of a mechanical linkage that may have used a bell crank or a gear.

I don't know of any Landing Gear that uses a ball-screw actuator to retract and extend it, which is commonly used for flight controls.

Some aircraft use gears and chains as part of the mechanism that extends and retracts the landing gear from the wheel well. For example, the US Navy "Wildcat" of WW2(and its bi-plane predecessor) used a chain drive(or a gear) that retracted the landing gear that was mounted in the fuselage, just forward of the engine firewall. The pilot would hand crank the gear Up or Down.

Answer

If you've got a steerable nosewheel, you've got at least one set of gears in it.

Repeat Answer

A steerable nosewheel may have a rack & pinnion steering controls but the larger airliners usually steer with hydraulic actuators.

First answer by ID215655989. Last edit by Custermen. Contributor trust: 352 [recommend contributor]. Question popularity: 25 [recommend question]