forgócsavar

A forgócsavar, often translated as propeller or airscrew, is a rotating component that generates thrust by reacting with a fluid, typically air or water. It consists of two or more helical blades that are attached to a central hub. As the blades rotate, their angled surfaces push the fluid backward, creating a forward force. This principle is fundamental to the propulsion of aircraft, boats, and submarines.

The design of a forgócsavar is critical to its efficiency. Factors such as blade shape, number of blades, pitch (the angle of the blades relative to the plane of rotation), and diameter all influence the amount of thrust generated and the energy required. A higher pitch generally results in greater thrust but also requires more power. The material used for the forgócsavar, often metal alloys or composite materials, is chosen for its strength, durability, and weight.

In aviation, forgócsavarok are driven by engines, which can be internal combustion or electric motors. The rotation of the engine's crankshaft is transferred to the forgócsavar through a gearbox or directly. In marine applications, forgócsavarok are driven by engines connected via a shaft. The effectiveness of a forgócsavar is measured by its efficiency, which is the ratio of thrust power to the power input.