Aircraft Landing Gear Components

Main Landing Gear

• Tubular, spring-steel struts are used in the main landing gear
• Struts are attached to the aircraft at two points: inboard and outboard forgings
• Inboard and outboard forgings are located in the belly of the aircraft
• A bracket is bonded to each strut, used for step attachment
• Hydraulic brake lines are routed down each main gear strut
• Brake lines are clamped to the strut
• Axles, main wheels, and brake assemblies are installed at the lower end of each strut

Fuselage Fairings and Tubular Strut Fairings

• Fuselage fairings are attached to the fuselage and tubular strut fairings with screws.
• Tubular strut fairings cover the tubular landing gear struts.
• Tubular strut fairings attach to the fuselage fairings at the upper end.
• Tubular strut fairings attach to fairing caps at the lower end.

Fairing Caps

• Fairing caps attach to the tubular strut fairings at the upper end.
• Fairing caps are clamped to the tubular struts at the lower end.

Brake Fairings and Speed Fairings

• Brake fairings are installed at the lower end of the tubular strut fairings.
• Brake fairings are attached to wheel speed fairings by screws around their outer perimeters.
• Speed fairings are installed over the wheels.
• Speed fairings are attached to mounting plates.
• Mounting plates are attached to the axles.

Fuselage Fairings and Tubular Strut Fairings

• Fuselage fairings are attached to the fuselage and tubular strut fairings with screws.
• Tubular strut fairings cover the tubular landing gear struts.
• Tubular strut fairings attach to the fuselage fairings at the upper end.
• Tubular strut fairings attach to fairing caps at the lower end.

Fairing Caps

• Fairing caps attach to the tubular strut fairings at the upper end.
• Fairing caps are clamped to the tubular struts at the lower end.

Brake Fairings and Speed Fairings

• Brake fairings are installed at the lower end of the tubular strut fairings.
• Brake fairings are attached to wheel speed fairings by screws around their outer perimeters.
• Speed fairings are installed over the wheels.
• Speed fairings are attached to mounting plates.
• Mounting plates are attached to the axles.

Nose Gear Components

• The nose gear consists of a steerable nose wheel mounted in a fork.
• The fork is attached to an air/oil (oleo) shock strut.
• The shock strut is secured to the tubular engine mount.

Nose Wheel Steering

• Nose wheel steering is accomplished by two spring-loaded push-pull tubes.
• The tubes link the nose gear steering collar to the rudder pedal bars.

Shimmy Prevention

• A hydraulic fluid-filled shimmy dampener is provided to minimize nose wheel shimmy.
• Some aircraft may have a nose wheel speed fairing installed.

Nose Gear Components

• The nose gear consists of a steerable nose wheel mounted in a fork.
• The fork is attached to an air/oil (oleo) shock strut.
• The shock strut is secured to the tubular engine mount.

Nose Wheel Steering

• Nose wheel steering is accomplished by two spring-loaded push-pull tubes.
• The tubes link the nose gear steering collar to the rudder pedal bars.

Shimmy Prevention

• A hydraulic fluid-filled shimmy dampener is provided to minimize nose wheel shimmy.
• Some aircraft may have a nose wheel speed fairing installed.

Nose Gear Shimmy Dampener

• The shimmy dampener is designed to provide resistance to shimmy in the nose gear.
• The dampener works by forcing hydraulic fluid through small orifices in a piston.
• The dampener piston shaft is stationary, secured to a non-moving part.
• The housing of the dampener is secured to the nose wheel steering collar, which moves when the nose wheel turns right or left.
• The relative motion between the dampener shaft and housing helps to resist shimmy.

This quiz covers the components and attachments of an aircraft's main landing gear struts, including forgings, brackets, hydraulic brake lines, axles, and brake assemblies.