Unlock instant, AI-driven research and patent intelligence for your innovation.

Coaxial helicopter and roto wing system thereof

A coaxial helicopter and rotor technology, applied in the field of rotor systems and coaxial helicopters, can solve the problems of increasing the resistance and weight of the rotor system, high noise, mechanical fatigue, etc., to improve safety factor and stability, reduce vibration and noise, The effect of reducing drag and weight

Active Publication Date: 2021-03-26
范家铭
View PDF14 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the distance between the paddle discs is too small, the upper and lower rotor blades will have a paddle accident, and the tip of the blade will vibrate violently due to the influence of turbulence, and the noise will be huge
The distance between the propeller discs is too large, the structure of the rotor control system is complex, the resistance and weight of the rotor system are increased, the rigidity of the rotor drive shaft is high, and problems such as mechanical fatigue are prone to occur. These defects hinder the high-speed, safe and stable flight of the helicopter

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Coaxial helicopter and roto wing system thereof
  • Coaxial helicopter and roto wing system thereof
  • Coaxial helicopter and roto wing system thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] Embodiments of the technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, and therefore are only examples, rather than limiting the protection scope of the present invention.

[0039] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application shall have the usual meanings understood by those skilled in the art to which the present invention belongs.

[0040] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship indicated by "radial"...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the technical field of helicopter design, and provides a coaxial helicopter and a rotor wing system thereof. The rotor wing system comprises an upper rotor wing assembly and alower rotor wing assembly, the upper rotor wing assembly comprises a first propeller hub and a first propeller blade, wherein one end of the first propeller blade is connected with the first propeller hub, and the other end of the first propeller blade tilts upwards; and the lower rotor wing assembly comprises a second propeller hub and a second propeller blade, wherein one end of the second propeller blade is connected with the second propeller hub and the other end of the second propeller blade tilts downwards. According to the rotor wing system of the coaxial helicopter provided by the invention, on the premise of ensuring that the first propeller blade and the second propeller blade do not have a propeller beating accident during high-speed maneuvering flight of the helicopter, the minimization of the distance between the first propeller disc formed during rotation of the first propeller blade and the second propeller disc formed during rotation of the second propeller blade is realized, and the safety coefficient and the stability of the helicopter during high-speed maneuvering flight are improved.

Description

technical field [0001] The invention relates to the technical field of helicopter design, in particular to a rotor system of a coaxial helicopter. In addition, the present invention also relates to a coaxial helicopter comprising the above-mentioned rotor system. Background technique [0002] In the field of conventional helicopter design, the coaxial dual-rotor helicopter adopts the coaxial reverse propeller design. This rotor design makes the helicopter have defects such as paddle beating when the helicopter is flying at high speed. [0003] The upper and lower paddle discs of the rotor must ensure a safe distance between the paddle discs in order to prevent the upper and lower rotor blades from beating. If the distance between the paddle discs is too small, the upper and lower rotor blades will have a paddle accident, and the tip of the blade will vibrate violently due to the influence of turbulence, and the noise will be huge. The distance between the propeller discs i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B64C27/10B64C27/32B64C27/473
CPCB64C27/10B64C27/32B64C27/473B64U10/10
Inventor 范家铭
Owner 范家铭