Lesson 12 Aircraft Landing Gear Shock Absorbers Steel

Lesson 12: Aircraft Landing Gear

Shock Absorbers • Steel Leaf or Tubular Spring • Bungee Shock Cord • Oleo Shock Strut

Steel Leaf or Tubular Spring

Steel Leaf or Tubular Spring

Bungee Shock Cord

Oleo Shock Strut

Oleo Shock Strut

Nose Wheel Steering And Shimmy Dampers • Castering Nose Wheel • Steerable Nose Wheels

Nose Wheel Steering And Shimmy Dampers

Landing Gear Retraction Systems

Landing Gear Retraction Systems • Cessna 182 RG • Hydraulically actuators powered by an electrically-driven hydraulic power pack. • Normal operating pressure of 1000 PSI to 1500 PSI. • Provides a positive up lock pressure on the main landing gear. • Nose gear uses an over-center mechanical linkage.

Landing Gear Retraction Systems • Cessna 182 Gear Warning Horn • Based on the position of the throttle (power reduction to ~15 inches manifold pressure). • Also requires the gear to be NOT down and locked (no green light). • Not driven by speed. • Not driven by altitude.

Aircraft Brakes

Wheel Units • Energizing-type Drum Brake • Weight of the vehicle or aircraft aids in the application of the brake.

Wheel Units • Nonenergizing Brakes • Expander Tube • Disc Brakes

Disc Brakes • Single Disc • Most popular brake for modern light aircraft. • Multiple Disc

Goodyear Single Disc (Keyed)

Brake Energizing Systems • Diaphragm Type Master Cylinder • Vented Master cylinders • Boosted Brake Master Cylinders • Power Brake System

Diaphragm Type Master Cylinder

Vented Master cylinders

Aircraft Wheels, Tires And Tubes

Wheels • Single-piece • Removable Rim • Two-Piece

Tires

Tires

Normal Wear Over-Inflation Under-Inflation