Automatic variable-pitch propeller, fixing base assemblies thereof and aircraft with same

Abstract

The invention discloses an automatic variable-pitch propeller, fixing base assemblies thereof and an aircraft with the same. The fixing base assemblies are assembled on a rotor or a power shaft of a motor (11) of the aircraft. Each fixing base assembly is provided with a paddle (1). The automatic variable-pitch propeller rotates, the paddles (1) generate centrifugal force, a spiral body (5) together with a piston (6) is subjected to a centrifuging effect of the paddles (1) so that the piston (6) slides out of an air cylinder (7), the spiral body (5) gradually extends out from a spiral hole (12), the incidence angles of the paddles (1) change under the matching control of the spiral body (5) and the spiral hole (12), and a vacuum chamber is formed between the air cylinder (7) and an exhaust hole when the piston (6) slides out of the air cylinder (7). The rotating speed is lowered, and when the centrifugal force of the paddles (1) is lowered, the spiral body (5) together with the piston (6) slides into the air cylinder (7) under the vacuum suction of the vacuum chamber and pulls the paddles (1) to rotate back, and therefore the incident angles are changed.

Description

technical field [0001] The invention relates to the field of aircraft, in particular to an self-variable-pitch propeller and its fixing seat assembly and an aircraft equipped with the device. Background technique [0002] As we all know, both helicopters and rotorcraft fly by propellers. The wind resistance of multi-axis rotorcraft is much lower than that of helicopters. Helicopters use variable-pitch propellers, which lift the fuselage by changing the pitch of the propellers. The aircraft uses a fixed-pitch propeller, so the aircraft can only be lifted by changing the motor speed. If the variable-pitch propeller is installed on a multi-axis rotorcraft, although it can improve the wind resistance, the complex structure of the variable-pitch propeller will also increase the aircraft. Many unstable factors. In short, the propeller of a helicopter is too complicated, and the propeller of a multi-axis rotorcraft cannot change the pitch. Contents of the invention [0003] The...

AI Technical Summary

Problems solved by technology

[0002] As we all know, both helicopters and rotorcraft fly by propellers. The wind resistance of multi-axis rotorcraft is much lower than that of helicopters. Helicopters use variable-pitch propellers, which lift the fuselage by changing the pitch of the propellers. The aircraft uses a fixed-pitch propeller, so the aircraft can only be lifted by changing the motor speed. If the variable-pitch propeller is installed on a multi-axis rotorcraft, although it can improve the wind resistance, the complex structure of the variable-pitch propeller will also increase the aircraft. many unstable factors

In short, the propellers of helicopters are too complicated, and the propellers of multi-axis rotorcraft cannot be changed.

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