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Module 17B

MODULE 17B: PROPELLER
Note: The scope of this Module shall reflect the propeller technology of aeroplanes pertinent to the B3 category.
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

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