Star-like pitch adjusting mechanism of helicopter tail rotor and helicopter

Abstract

The invention discloses a star-like pitch adjusting mechanism of a helicopter tail rotor and a helicopter. The star-like pitch adjusting mechanism comprises a pitch adjusting assembly, wherein the pitch adjusting assembly is used for driving the pitch adjusting of blades of the tail rotor; the pitch adjusting assembly comprises a star-like pitch adjusting linkage rod, a first joint bearing mechanism and a blade clamp, the first joint bearing mechanism is connected with the star-like pitch adjusting linkage rod and is moved along with the star-like pitch adjusting linkage rod in the vertical direction, and the blade clamp is connected with the first joint bearing mechanism and is rotated along with the first joint bearing mechanism to adjust the pitch of the blades, and the blade clamp is arranged on a casing. The star-like pitch adjusting mechanism can solve the problems of high difficulty in manufacturing, huge size, difficulty in pitch adjusting of the blades, low control precision,complicated whole structure, short service life and high manufacturing cost in an unmanned helicopter in the traditional technology.

Description

technical field [0001] The invention relates to the field of helicopters, in particular to a helicopter tail rotor star-shaped pitch-variable mechanism and the helicopter. Background technique [0002] The helicopter tail rotor is used to balance the anti-torque and to control the helicopter's heading. The rotating tail rotor is equivalent to a vertical stabilizer, which can stabilize the heading of the helicopter. Although the function of the rear rotor is different from that of the rotor, they both generate aerodynamic force by rotation and work in an asymmetric airflow during forward flight. Therefore, the structure of the tail rotor has many similarities with the rotor structure. The structural forms of the tail rotor include seesaw type, universal joint type, articulated type, bearingless type, "ducted tail rotor" type and so on. [0003] Since the power of the tail rotor generally comes from the main engine of the helicopter, the main method to control the force of t...

AI Technical Summary

Problems solved by technology

[0005] In view of this, the purpose of the present invention is to overcome the defects in the prior art and provide a star-shaped pitch-changing mechanism for helicopter tail rotors, which can overcome the difficulty in manufacturing unmanned helicopters in the traditional technology, the bulkiness, the difficulty in changing the pitch of the blades, and the difficulty in controlling the pitch. Low, complex overall structure, short service life, high manufacturing cost

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