The working principle is similar to crankshaft, Scotch yoke, or wobble, nutator, and Z-crank drives in engine designs.
The greater the disk's angle to the shaft, the more pronounced is this apparent linear motion.
[4] A common example of a swashplate application in a fluid pump is the compressor of a present-day automobile air conditioning system.
By varying the angle of the swashplate, the pistons' stroke (and, therefore, the compressor's cooling capacity) can be dynamically adjusted.
A helicopter swashplate is a pair of plates, one rotating and one fixed, that are centered on the main rotor shaft.