incidence angle

Definition of Incidence Angle in English :

1. angle of incidence, incidence angle

the angle that a line makes with a line perpendicular to the surface at the point of incidence

WordNet Lexical Database for English. Princeton University. 2010.

Incidence Angle

noun

1.

the angle that a line or beam of radiation makes with the normal to the surface at the point of incidence

2. another name for angle of attack

3. Also called: rigging angle of incidence

the angle between the chord line of an aircraft wing or tailplane and the aircraft's longitudinal axis

1.

the angle that a light ray or electromagnetic wave striking a surface makes with a line perpendicular to the reflecting surface

2. Chiefly British

angle of attack

3. Aeronautics

a permanent angle between the chord of an airfoil and the horizontally level fuselage