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A satellite image of circular fields characteristic of center pivot irrigation, Kansas Farmland with circular pivot irrigation. Center-pivot irrigation (sometimes called central pivot irrigation), also called water-wheel and circle irrigation, is a method of crop irrigation in which equipment rotates around a pivot and crops are watered with sprinklers.
Lindsay Corporation (NYSE: LNN), formerly known as Lindsay Manufacturing Co., is a manufacturer of Zimmatic brand center pivot irrigation systems, based in the U.S. state of Nebraska. It also manufactures farm and construction machinery, as well as road and railroad infrastructure equipment.
Crops are often planted in a circle to conform to the center pivot. This type of system is known as LEPA (Low Energy Precision Application). Originally, most center pivots were water-powered. These were replaced by hydraulic systems (T-L Irrigation) and electric-motor-driven systems (Reinke, Valley, Zimmatic). Many modern pivots feature GPS ...
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A centreboard (often called a lifting foil in a modern racing dinghy) is used to provide lift to counter the lateral force from the sails.This is required for sailboats to move in directions other than downwind, since the force of the sail is never closer than 45 degrees to the apparent wind.
The center of percussion is the point on an extended massive object attached to a pivot where a perpendicular impact will produce no reactive shock at the pivot. Translational and rotational motions cancel at the pivot when an impulsive blow is struck at the center of percussion.
A snap-fit is an assembly method used to attach flexible parts, usually plastic, to form the final product by pushing the parts' interlocking components together. [1] There are a number of variations in snap-fits, including cantilever, torsional and annular.
A swing bridge (or swing span bridge) is a movable bridge that can be rotated horizontally around a vertical axis. It has as its primary structural support a vertical locating pin and support ring, usually at or near to its center of gravity, about which the swing span (turning span) can then pivot horizontally as shown in the animated illustration to the right.