Departure Angle

The angle between the axis of the main lobe of an antenna pattern and the horizontal plane at the transmitting antenna. (188 ) Synonym takeoff angle.

The smallest angle, in a plane side view of an automobile, formed by the level surface on which the automobile is standing and a line tangent to the rear tire static loaded radius arc and touching the underside of the automobile rearward of the rear tire. (49CFR523)