Aviation Dictionary
چرخ فرمان، فرمان کنترل هواپیما
A wheel-like control in an airplane cockpit used by the pilot to move the ailerons and elevators. Rotation of the wheel moves the ailerons, and back-and-forth or in-and-out movement moves the elevators. Because the wheel does not rotate in a complete circle, most aircraft control wheels are not round, but are, rather, only segments of a wheel.