Variable pitch propeller

Abstract

The invention discloses a variable pitch propeller, and belongs to the technical field of aviation. The variable pitch propeller comprises a main shaft, an electric brush device, a hub and two, three or four rotating vanes, wherein the rotating vanes are evenly distributed on the periphery of the hub, are fixedly connected with the hub and are the same in structure; the rear section of the main shaft is connected with the electric brush device; the front end of the main shaft is fixedly connected with the hub vertically; each rotating vane comprises a motor and a blade; the output shaft of each motor and the corresponding blade are fixedly connected to the root part of the blade; the electric brush device comprises a bracket and a plurality of pairs of electric brushes; each pair of electric brushes comprises an electric brush head and a conductive ring; all motors are connected with the controller by virtue of electric wires and the electric brushes; the motors are controlled to run and stop by the controller, so as to control an attack angle of the blade to periodically change. The variable pitch propeller is capable of simultaneously generating lift force and tensile force under the drive of active force and the control of the controller. The variable pitch propellers disclosed by the invention are applied to an airplane in pairs, and are symmetrically arranged in the middles of the front edges of a left wing and a right wing of the airplane, thus the lift force and the tensile force can be provided for the airplane, and the efficiency is relatively high.

Description

technical field [0001] A variable-pitch propeller belongs to the technical field of aviation, and in particular relates to a variable-pitch propeller. Background technique [0002] Traditional airplanes can only produce pulling force or thrust when the plane of propeller rotation is arranged horizontally and vertically, but cannot produce lift; the main rotor of a traditional helicopter can only produce lift when the plane of rotation of the main rotor is horizontal, but cannot produce thrust or pulling force. Contents of the invention [0003] The purpose of the present invention is to overcome the above-mentioned deficiency of existing propeller for aircraft and rotor for helicopter, invent a kind of pitch-variable propeller that can produce the power of two directions perpendicular to each other simultaneously. [0004] A variable-pitch propeller includes a main shaft, a brush device, a hub, and two, three or four rotor blades with the same structure that are uniformly ...

AI Technical Summary

Problems solved by technology

[0002] Traditional aircraft can only produce pull or thrust when the plane of propeller rotation is arranged vertically and horizontally, but cannot produce lift; when the plane of rotation of the main rotor of a traditional helicopter is horizontal, it can only produce lift but not thrust or pull

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