Helicopter coaxial double-cone rotor parallel manual device

Abstract

The invention relates to a helicopter coaxial double-cone rotor parallel manual device. The device comprises a rotor wing group, a parallel mechanism, a forward and reverse rotation mechanism, a variable-cone mechanism and a spring; the rotor wing group comprises a core rod, an inner sleeve, an outer sleeve, a pull rod group, upper and lower paddle groups, upper and lower connecting rod groups, and upper and lower rings; the upper and lower paddle groups are rotationally connected with the upper ends of the inner and outer sleeves; the parallel mechanism is connected with the rotor wing group in parallel, and a hand-operated crank drives the rotor wing group to swing and stretch; the forward and reverse rotation mechanism drives a coaxial double-connecting-frame rotor wing to rotate forwardly and reversely through the inner and outer sleeves, upper and lower large gears, an idle gear and the upper and lower gears; the variable-cone mechanism changes the included angle between the blades and the axis of the rotor wing group through the core rod, the upper and lower rings and the upper and lower connecting rod groups, and changes the lift force and the flight speed. The device is simple and light, can change the flight direction, speed and lift flight, and has the advantages of high navigational speed, large rotor lift force, balanced reaction torque, simple structure, short fuselage, centered gravity center, symmetrical aerodynamic force, small rotation diameter, good stability and the like.

Description

technical field [0001] The invention relates to the technical field of helicopters, in particular to a helicopter coaxial double-cone rotor parallel manual device. Background technique [0002] Compared with traditional single-rotor helicopters, coaxial twin-rotor helicopters have many advantages and become an advanced model leading the development of helicopters in the world today. The rotor system is the most characteristic and most critical symbolic part of the helicopter. [0003] In recent years, patents on the rotor system include: Patent CN101961559B discloses a rotor support device for a model airplane helicopter, which uses a V-shaped bracket to absorb the shock waves generated by the helicopter, in order to reduce the vibration of the helicopter body. Patent CN101204992B discloses a helicopter coaxial dual-rotor 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

Images