Helicopter coaxial biconical rotor parallel manual device

Abstract

The invention relates to a parallel manual device for a coaxial biconical rotor of a helicopter, comprising a rotor group, a parallel mechanism, a forward and reverse rotation mechanism, a variable cone mechanism and a spring; Lower blade group, upper and lower connecting rod groups, upper and lower rings; upper and lower blade groups are rotatably connected with the upper ends of the inner and outer casings; the parallel mechanism is connected in parallel with the rotor group, and the hand-operated crank drives the rotor group to swing and expand; positive and negative The rotating mechanism drives the coaxial double-frame rotor to rotate forward and reverse through the inner and outer casings, the upper and lower large gears, the intermediate wheel and the upper and lower gears; Change the angle between the blade and the axis of the rotor group to change the lift and flight speed. The control mechanism of the invention is simple and lightweight, and can change the flight direction, speed, and vertical flight. Good stability and so on.

Description

technical field [0001] The invention relates to the technical field of helicopters, in particular to a parallel manual device for coaxial biconical rotors of a helicopter. Background technique [0002] Compared with the traditional single-rotor helicopter, the coaxial twin-rotor helicopter has many advantages and has become an advanced model leading the development of helicopters in the world today. The rotor system is the most characteristic and key iconic part of the helicopter. [0003] In recent years, patents on rotor systems include: Patent CN101961559B discloses a model aircraft helicopter rotor support device, which uses a V-shaped bracket to absorb shock waves generated by the helicopter, in order to reduce the tremor of the helicopter body. Patent CN101204992B discloses a helicopter coaxial dual rotor rotational speed differential device, in order to realize the yaw control of the coaxial dual rotor helicopter. Patent CN101376433B discloses a helicopter rotor con...

AI Technical Summary

Problems solved by technology

[0004] Although the above-mentioned existing technologies have their own characteristics, the existing helicopter rotor technology still has the following inherent defects: the rotor heading control mechanism is complicated, there are too many components, and the transmission chain is long; the coaxial double-rotor heading control mechanism is more complicated.

Many components that rotate with the rotor main shaft are exposed outside the cabin, with a large area of ​​waste resistance and easy to be damaged and rotted; long blades are prone to flutter and loud noise; The load capacity is weak, not suitable for high-speed rotation; the fuselage swings synchronously with the rotor main shaft, the flight flexibility is poor, people are prone to dizziness, and it is difficult to lock the target; the bevel gear driving the coaxial dual rotor forward and reverse has high noise, large vibration, and complicated manufacturing , low load capacity, easy to wear

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