单词	pitch angle
释义	pitch angle pitch angle The angle between the aircraft's longitudinal axis and the horizontal plane. Also called inclination angle. Translations angolo di beccheggio pitch angle pitch angle i. The angle between the chord line of a propeller blade and the plane of rotation. ii. The angle between the rotor plane and the chord line. iii. The angle between the chord line and a line that is horizontal or parallel to the surface of the earth.
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