Pitch angle (helicopter rotor blade)
The angle between the chord line of a rotor blade and the reference plane of the main rotor hub, or the plane of rotation of the rotor.
Also defined in 3 more sources
The angle between the chord line of a propeller blade and the plane of rotation.
The angle between the chordline of a propeller blade and the plane of rotation. See blade angle.
Aviation Maintenance Technician Handbook — Powerplant, p. G-20
The angle between the chord line of the rotor blade and the reference plane of the main rotor hub or the rotor plane of rotation.