The propeller is made up of blades that are mounted on a rotating shaft and are shaped in an aerodynamic or hydrodynamic manner; it is a device that provides pushing or pulling force. Propellers are used in both air and watercraft.  

The propeller is the system in propeller aircraft that converts the rotation transmitted from the engine into thrust. It is made up of two or more blades. According to an external perceiver, the propeller blades make a twisting motion, also known as a helix, because they move approximately forward due to the thrust force and in the direction of rotation due to its rotation. heliks 

Because the radius of the propeller causes the distance travelled by the blade tip in the rotation plane to be greater than the distance travelled by the centre, the angular velocity of the blade tip is like the angular velocity in the parts close to the net, but the distance (speed) it travels per unit time is at maximum