Questions and Answers
Where are the main landing gear struts attached to the aircraft?
What are attached to each strut for attachment of a step?
What are routed down and clamped to each main gear strut?
What are installed at the lower end of each strut?
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What type of steel are the main landing gear struts made of?
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What is the purpose of the brake fairings?
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How are the fuselage fairings attached to the aircraft?
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What are the tubular strut fairings attached to at the lower end?
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What is the purpose of the fairing caps?
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How are the speed fairings attached to the axles?
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What is the purpose of the tubular strut fairings?
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What do the fairing caps attach to at the upper end?
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How are the brake fairings attached to the wheel speed fairings?
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What do the speed fairings attach to?
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What are the fuselage fairings attached to?
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What is the purpose of the hydraulic fluid-filled shimmy dampener?
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What connects the nose gear steering collar to the rudder pedal bars?
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What is the nose gear mounted in?
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What type of shock strut is used in the nose gear?
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What may be installed on some aircraft?
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What is the primary function of the shimmy dampener in the nose gear?
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What connects the nose gear steering collar to the rudder pedal bars?
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What type of shock strut is used in the nose gear?
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What is the nose gear mounted in?
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What is secured to the tubular engine mount?
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What is the purpose of the shimmy dampener in the nose gear?
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What is the relative motion between the shimmy dampener shaft and housing caused by?
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What is secured to a stationary part in the shimmy dampener?
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What flows through the small orifices in the piston of the shimmy dampener?
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What is the nose wheel steering collar connected to in the shimmy dampener?
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Study Notes
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.
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Description
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.
