Module 17A. Propeller
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17.1 Fundamentals
- Blade element theory;
- High/low blade angle, reverse angle, angle of attack, rotational speed;
- Propeller slip;
- Aerodynamic, centrifugal, and thrust forces;
- Torque;
- Relative airflow on blade angle of attack;
- Vibration and resonance
17.2 Propeller Construction
- Construction methods and materials used in wooden, composite and metal propellers;
- Blade station, blade face, blade shank, blade back and hub assembly;
- Fixed pitch, controllable pitch, constant speeding propeller;
- Propeller/spinner installation.
17.3 Propeller Pitch Control
- Speed control and pitch change methods, mechanical and electrical/electronic;
- Feathering and reverse pitch;
- Overspeed protection
17.4 Propeller Synchronising
- Synchronising and synchrophasing equipment
17.5 Propeller Ice Protection
- Fluid and electrical de-icing equipment
17.6 Propeller Maintenance
- Static and dynamic balancing;
- Blade tracking;
- Assessment of blade damage, erosion, corrosion, impact damage, delamination;
- Propeller treatment/repair schemes;
- Propeller engine running
17.7 Propeller Storage and Preservation
- Propeller preservation and depreservation