CPL » Principles – Aeroplane » Propellers

22.24 Propellers

22.24.2 Define blade face, blade angle, pitch (or helix) angle, helical twist, angle of attack.

22.24.4 Describe the forces acting on a propeller blade; the rpm/airspeed relationship; and the most effective blade sections.

22.24.6 Explain how propeller pitch affects efficiency at different speeds.

22.24.8 Explain the purpose of the constant-speed (variable pitch) propeller.

22.24.10 Describe in broad terms the operation of the constant speed unit (CSU) with changes in power setting and airspeed.