Helicopter linear electric direct drive tail rotor mechanism assembly and helicopter

Abstract

The invention discloses a straight-line electric direct-drive tail rotor mechanism assembly for a helicopter, which includes a pitch-changing mechanism connected with a linear steering gear mechanism for driving the pitch-changing blades of the tail rotor, and a tail-rotor power mechanism that drives the pitch-changing mechanism to rotate. The pitch variable mechanism includes a housing for installing the blades, a link mechanism arranged in the casing for adjusting the pitch of the blades, and a pitch variable push rod connected between the link mechanism and the linear steering gear mechanism. The casing is connected with the tail rotor power mechanism by rotating around the pitch-variable push rod, which can overcome the difficulty in manufacturing unmanned helicopters in traditional technology, bulky volume, difficulty in changing the pitch of the blades, low control accuracy, and complex overall structure. Problems with short life and high manufacturing costs.

Description

technical field [0001] The invention relates to the field of helicopters, in particular to a helicopter linear electric direct-drive tail rotor mechanism assembly 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...

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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 helicopter linear electric direct-drive tail rotor mechanism assembly, which can overcome the difficulty in manufacturing unmanned helicopters in the traditional technology, the bulkiness, and the difficulty in changing the pitch of the blades. , low control precision, complex overall structure, short service life and high manufacturing cost

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