MODULE 17A. PROPELLER (B1.1)

MODULE 17A. PROPELLER (except for B3 licence)


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.