A propeller is a mechanical device that consists of two or more blades attached to a central hub, which is used for generating propulsion or thrust in various applications, especially in fluid environments such as air or water. The primary function of a propeller is to convert rotational motion into linear thrust, thus enabling the movement of objects through a fluid medium.
Typically, propellers are designed with curved surfaces or airfoils, similar to the wings of an airplane, to effectively move fluid by creating a pressure difference between the front and back surfaces of the blades. As the propeller rotates, the blades push or pull against the fluid, generating thrust, which propels the object forward.
Propellers are widely used in aviation, marine transportation, and other applications where the movement through a fluid medium is required. In aircraft, propellers are commonly used in small aircraft, turboprops, and some helicopters, providing the necessary thrust for propulsion. Similarly, in the marine industry, propellers are utilized in boats, ships, and submarines to propel them through water.
The design and configuration of a propeller can vary depending on the intended application, taking into account factors such as the type of fluid, desired speed, power source, and efficiency. Additionally, variables such as the number of blades, their shape, and pitch can be adjusted to optimize performance for different operating conditions.
