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
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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