Angle

Angle. Corner. Angle de dérive. Angle between axis of gun and aiming point.—Angle de direction. Angle subtended at the battery by target and “reference” point. Of known position.— Angle de site (positif, négat if). Angle of sight (plus, minus) —Angle de tir. Angle between line of sight and axis of gun, i.e., elevation due to range (with independent line of sight). Quadrant elevation (in case of other sights)—Angle de tir de réglage. Elevation as found by the guns.—Angle de transport. Switch angle. Angle de départ (de projection). Angle of departure (of projection).—Angle d’écart initial (angle de relévement, angle de bai ement). Jump (positive, negative).—Angle de dérivation. Drift angle for given range.—Angle de chute. Angle of descent (strictly, angle of descent taken at intersection of line of sight with trajectory).—Angle d’arrivée. Angle of arrival, viz., angle between ground and trajectory at the target.—Angle de charge ment. LHlevation or depre ion of gun in loading position—Angle ogivale. Angle of head of shell, defined by axis and tangents to curve of the head. Angile-limite. Extreme angle of elevation or depre ion allowed by mounting.—Angle de soulévement. Limiting angle at which carriage tends to overturn on firing —Angle d’incidence d’affait. Trail angle (guns)—Angle d’incidence. Striking angle, angle of incidence. Angle made by wing of aeroplane with reference to the direction of motion of the air. —Angle d’attaque. Angle between wing and air current (aeroplane).—Angle critique. Stalling angle (aeroplane).— Angle de la vorture. Sweep-back of wings (aeroplane).— Angle de braquage. Steering angle (of a car). Angle saillant. Salient angle-—Angle rentrant. Reentering angle-—Angle mort. Dead angle. Angle horaire. Hour-angle-—Angle optique (angle visuel). Visual angle.—Angle d’enroulement. Contact angle of power belt.—Angle de frottement. Angle defined by the resultant of the vector of movement of the sliding body and the vector of its pre ure on the fixed body.—Angle de déviation. Lead off angle of power belt.—Angle de coupe (angle tranchant, angle d’incidence). Cutting angle of a tool.—Angle de barre. Helm angle. Angle droit. Right angle-—Angle aigu. Acute angle. —Angle obtus. Obtuse angle-—Angle sphérique. Spherical angle——Angle plan. Plane angle-—Angle moyen. Spherical angle corrected to plane. [p.27]