1. Lesson 12: Aircraft Landing Gear

2. Shock Absorbers Steel Leaf or Tubular Spring Bungee Shock Cord
Oleo Shock Strut

3. Steel Leaf or Tubular Spring

4. Steel Leaf or Tubular Spring

5. Bungee Shock Cord

6. Oleo Shock Strut

7. Oleo Shock Strut

8. Nose Wheel Steering And Shimmy Dampers
Castering Nose Wheel
Steerable Nose Wheels

9. Nose Wheel Steering And Shimmy Dampers

10. Landing Gear Retraction Systems

11. 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.

12. 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.

13. Aircraft Brakes

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

15. Wheel Units
Nonenergizing Brakes
Expander Tube
Disc Brakes

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

17. Goodyear Single Disc (Keyed)

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

19. Diaphragm Type Master Cylinder

20. Vented Master cylinders

21. Aircraft Wheels, Tires And Tubes

22. Wheels
Single-piece
Removable Rim
Two-Piece

23. Tires

24. Tires

25. Normal Wear
Over-Inflation
Under-Inflation