SECTION 4. Helicopter Systems
1 Airframe
2 Main Rotor
2.1 Rotor Types
2.1.1 Semirigid Systems
2.1.2 Rigid Systems
2.1.3 Fully Articulated Systems
2.2 The Swash Plate Assembly
2.3 The Freewheeling Unit
2.4 The Rotor Brake
3 Flight Instruments
3.1 Airspeed Indicator
3.2 Altimeter
3.3 VSI
3.4 Engine Instruments
4 Engines
4.1 Piston Engines
4.2 Turbine Engines
5 Transmission System
5.1 Main Rotor Transmission
5.2 Clutch
6 Fuel System
6.1 Fuel Supply System
6.2 Engine Control System
6.3 Carburetor Ice
6.4 Fuel Injection
7 Hydraulics
8 Electrical Systems
9 Fuel Systems
10 Stability Augmentation Systems
11 Anti-Icing Systems
