Pitch control mechanism of propeller and air vehicle with pitch control mechanism

Abstract

The invention discloses a pitch control mechanism of a propeller and an air vehicle with the pitch control mechanism. The propeller of the air vehicle is provided with the pitch control mechanism, and when the propeller rotates, each blade (21) enables a cylinder (12) of a corresponding blade root (1,2) to exit from a female hole (5) formed in a fixing base (2) under the action of centrifugal force; when the cylinders (12) of the blade roots (1,2) enter and exit the female hole (5), a synchronous shaft (7) controls the entering and exiting strokes of the cylinders (12) of the blade roots (1,2) to be same; when the cylinders (12) of the blade roots (1,2) enter and exit the female hole (5), variable-pitch screw holes (15) drive the blade roots (1,2) to rotate and force the incidence angles of the blade roots (1,2) to be changed under cooperation of variable-pitch stopping columns (13); when the rotating speed of the propeller is decreased, the centrifugal force of the blades (21) is decreased, the cylinders (12) of the blade roots (1,2) retract into the female hole (5) of the fixing base (2) under the action of spring parts (10), and meanwhile the blade pitch of the blades (21) is changed and gradually decreased.

Description

technical field [0001] The invention relates to an aircraft and a propeller, in particular to a pitch-changing mechanism capable of automatically changing the pitch of the propeller, including the propeller and an aircraft equipped with the device. Background technique [0002] It is well known that the wind resistance of multi-axis aircraft is much lower than that of helicopters. Helicopters use variable-pitch propellers, which lift the fuselage by changing the pitch of the propellers, while multi-axis aircraft use fixed propellers, so they can only be changed by changing the motor. Rotating speed to lift the aircraft, if the variable pitch propeller is installed on the multi-axis aircraft, although it can improve the wind resistance, but due to the complex structure of the variable pitch propeller, it will also add many unstable factors to the aircraft. Contents of the invention [0003] The purpose of the present invention is to solve the deficiencies of the above-menti...

AI Technical Summary

Problems solved by technology

[0002] It is well known that the wind resistance of multi-axis aircraft is much lower than that of helicopters. Helicopters use variable-pitch propellers, which lift the fuselage by changing the pitch of the propellers, while multi-axis aircraft use fixed propellers, so they can only be changed by changing the motor. If the variable pitch propeller is installed on the multi-axis aircraft, it can improve the wind resistance, but due to the complex structure of the variable pitch propeller, it will also add many unstable factors to the aircraft.

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