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A controllable-pitch propeller (CPP) or variable-pitch propeller is a type of propeller with blades that can be rotated around their long axis to change the blade pitch.

3 votes

Variable pitch propellers: Why are they constant speed too?

The AoA of a prop's blades depends on both their pitch and the prop RPM, relative to true airspeed. You're carving a screw through the air some amount faster than the plane is actually going. When yo …
Peter Cordes's user avatar