Module 17A. Propeller

17.1 Fundamentals

1. Blade element theory;
2. High/low blade angle, reverse angle, angle of attack, rotational speed;
3. Propeller slip;
4. Aerodynamic, centrifugal, and thrust forces;
5. Torque;
6. Relative airflow on blade angle of attack;
7. Vibration and resonance

17.2 Propeller Construction

1. Construction methods and materials used in wooden, composite and metal propellers;
2. Blade station, blade face, blade shank, blade back and hub assembly;
3. Fixed pitch, controllable pitch, constant speeding propeller;
4. Propeller/spinner installation.

17.3 Propeller Pitch Control

1. Speed control and pitch change methods, mechanical and electrical/electronic;
2. Feathering and reverse pitch;
3. Overspeed protection

17.4 Propeller Synchronising

1. Synchronising and synchrophasing equipment

17.5 Propeller Ice Protection

1. Fluid and electrical de-icing equipment

17.6 Propeller Maintenance

1. Static and dynamic balancing;
2. Blade tracking;
3. Assessment of blade damage, erosion, corrosion, impact damage, delamination;
4. Propeller treatment/repair schemes;
5. Propeller engine running

17.7 Propeller Storage and Preservation

1. Propeller preservation and depreservation