Module 17A

MODULE 17A. PROPELLER

Note: This module does not apply to category B3. Relevant subject matters for category B3 are defined in module 17B.

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