Variable pitch propeller

Propeller is an important variant of wheel axle structure, which is an important propulsion device for aircraft or ships. It is connected by propeller blades and hub (g ǔ), and generates reverse thrust through rotation. The angle of the propeller blades is generally fixed and unchanged. Variable pitch propellers can change the blade angle, and the "pitch" of variable pitch refers to the distance traveled by the propeller after one rotation. In the low range state, the forward speed is slow but the thrust is high, while in the high range state, the forward speed is fast and efficient, acting like different transmission gears of a car. Variable pitch propeller can fully utilize the maximum effective power of the engine and adjust to the optimal blade angle according to different flight speeds and altitudes of the aircraft.

The unit is designed for unsupervised public use: controls are recessed or shielded, moving parts are enclosed, and the interface is operable by a child of about six with no instruction. Where a screen is used, the language can be switched without changing the hardware, and the content can be replaced on site.