hajtócsavar

A hajtócsavar, meaning "drive screw" or "propeller screw" in English, is a component commonly found in mechanical systems, particularly in watercraft. Its primary function is to convert rotational motion into linear thrust, propelling the vessel through water. This is achieved through a helical design that interacts with the surrounding fluid.

The hajtócsavar is typically attached to a rotating shaft, which is driven by an engine or motor. As the shaft spins, the blades of the hajtócsavar, which are angled, push against the water. This action creates a pressure difference, with higher pressure behind the screw and lower pressure in front, resulting in a forward force. The shape and size of the hajtócsavar are crucial for efficiency and are determined by factors such as the boat's size, hull design, and desired speed.

Variations exist, including fixed-pitch and variable-pitch hajtócsavarok. Fixed-pitch designs have blades at a set angle, while variable-pitch systems allow for adjustments to the blade angle, enabling better performance across a range of speeds and conditions. The material used for hajtócsavarok is typically a strong metal alloy, such as bronze or stainless steel, to withstand the stresses and corrosive environment of saltwater.