Angle of Jump

The angular elevation of the line of departure above the position of the axis of the bore at the time the piece was pointed. In determining the sight or quadrant angle to be used, this angle must be subtracted algebraically from the angle of departure given in the range table; the angle of jump differs for different guns, carriages, and ranges, and is determined by experiment. of Iioek. — The angle included between the stock and the plane of the wheel, when the wheel touches the lock-plate in turning. The angle of lock with the 5' track is a little more than 50°. Angle of Opening. — In gunnery, the angle which the direction taken by the uppermost shrapnel ball of the cone of dispersion makes with the direction taken by the undermost, about 300 mils for 3-inch shrapnel. … Le of Projection- — In gunnery, the angle which the tangent makes with the horizontal at the muzzle., le of Quadrant Elevation. — The angle between the axis "of the bore elevation. and the line of sight. Also called the Angle of tangent Angle of Reflection. — The angle intercepted between the line of direction of a body rebounding after it has struck against another body, and a perpendicular erected at the point of … contact.