A kind of magnetic levitation rotor system and the helicopter with it

Abstract

The invention relates to a magnetic levitation rotor system and a helicopter having the same, and relates to the field of aviation, in particular to the field of rotor technology. The magnetic levitation rotor system includes a rotor ring (2) connected to the rotor tip and an orbital ring (1) that provides a magnetic levitation force for the rotor ring (2). The magnetic levitation force provided by the orbital ring (1) includes: A driving device that drives the blade to rotate and a suspension device that can levitate the blade tip. A first deflection drive mechanism is provided at the blade root of the rotor to provide a first deflection angle of the blade root. The rotor ring (2) A second deflection driving mechanism is provided to provide a second deflection angle of the blade tip. The rotor ring of the present invention only needs to be driven by the outer track ring, and the blades are connected through a central connector, which not only ensures the independent pitch change requirements of the rotor, but also offsets part of the blade load through the central connector, increasing the overall stability of the rotor ring. performance, improving work reliability.

Description

technical field [0001] The invention belongs to the field of overall design of helicopters, and in particular relates to a magnetic suspension rotor system and a helicopter with the same. Background technique [0002] The rotor of the rotorcraft generates aerodynamic force through rotation, which provides lift for flight, so that the helicopter can take off and land vertically, with flexible take-off and landing sites and a wide range of operations. While providing lift, the rotor can also produce the steering force required for flight in all directions. [0003] A conventional rotor device is composed of rotor blades, a rotor hub, and a rotor shaft. The rotor blades are installed on the rotor hub. The rotor hub is connected to the transmission system through the central rotor shaft. The driving force of the power system is decelerated through the transmission device through multi-stage gear transmission. Finally, it is transmitted to the rotor shaft, which then drives the ...

AI Technical Summary

Problems solved by technology

[0004] The power of the conventional rotor device is mechanically converted and transmitted through the engine and the transmission, and there is a power loss and the system is complicated; there is air convection above and below the blade section at the blade tip of the rotor blade, which reduces the airflow above and below the blade section. The pressure difference of the rotor blade affects the ability of the blade tip to generate lift; and the blade is exposed, which will collide with external objects and affect flight safety. At the same time, the noise generated by the rotor blade is not shielded and is directly transmitted to the outside world. The overall noise is large

[0005] Since the blade rotates at a position with a larger radius, the linear speed is faster, and the lift generated by this part is also large. Generally, the resultant lift force of the blade is at the position of about 70% of the blade radius at the tip of the blade, that is, the position away from the rotor axis. , while the bearing position of the conventional rotor device is at the center, that is, the rotor shaft, so the moment arm between the lift force of the blade and the bearing position of the rotor shaft is relatively long, resulting in a large bending moment for the blade, propeller hub and rotor shaft, resulting in vibration Large, low fatigue life

[0006] Publication number CN101693470B Chinese invention patent provides a kind of magnetic levitation electric power rotor flying saucer. Publication number is that CN102085912A Chinese invention patent application provides a kind of disc-shaped magnetic levitation ring-wing aircraft. The rotor device in the above two patents or patent applications Two sets of maglev guide rails, the rotor inner ring and the rotor outer ring, are used. The system is relatively complicated, and the overall weight of the rotor device is too large. At the same time, there are also aerodynamic loads on the rotor blades in different directions due to the superposition of airflow speeds in a complex airflow environment. Inconsistency, the resulting inconsistency in the rotational movement of each blade, there is a possibility that the blade may be misaligned on the inner and outer ring guide rails, and serious problems will cause the blade to be stuck

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