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Rotorcraft blades and rotorcraft

A technology of rotorcraft and blades, which is applied in the field of aircraft, can solve the problems of large blade resistance, etc., and achieve the effect of improving the wind resistance attitude angle and improving the ability of cargo transportation

Active Publication Date: 2021-08-06
BEIJING SANKUAI ONLINE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the relevant design, the focus is mainly on the hovering state or the low-speed axial flow state. This kind of blade can generally provide better hovering performance, but in the process of forward flight, especially in high-speed flight and large sideways Flying in the wind, the resistance of the blade itself is relatively large

Method used

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  • Rotorcraft blades and rotorcraft
  • Rotorcraft blades and rotorcraft
  • Rotorcraft blades and rotorcraft

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Embodiment Construction

[0026] Specific embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present disclosure, and are not intended to limit the present disclosure. The orientation terms such as up and down in this embodiment refer to the conventional operating attitude of the rotor and the rotorcraft after the rotor is installed on the aircraft, and should not be regarded as limiting. The airfoil used for the rotorcraft blade of the present disclosure will be described in detail below with reference to the accompanying drawings. In the case of no conflict, the features in the following embodiments and implementations can be combined with each other.

[0027] First of all, it should be noted that the parameters involved in the present disclosure are defined in a common way in the art, and the airfoil refers to a two-dimen...

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Abstract

The present disclosure relates to a blade for a rotorcraft and the rotorcraft, wherein the blade of the rotorcraft sequentially includes a blade inner section, a blade outer section and a blade tip section along the span direction, and the relative chord length of the blade is from the blade The inner section of the blade increases first and then decreases toward the blade tip section, and the maximum relative chord length of the blade is within the range of . Through the above technical solution, the rotorcraft can have a smaller attitude angle in the state of high-speed forward flight, which improves the ability of the rotorcraft to work on airborne equipment and transport goods.

Description

technical field [0001] The present disclosure relates to the technical field of aircraft, and in particular, to a blade of a rotorcraft and the rotorcraft. Background technique [0002] Multi-rotor aircraft are widely used in many fields such as surveying and mapping, security, logistics and distribution. Well-designed and optimized blades can greatly improve the cruising performance and wind resistance performance of the whole machine. In related designs, the focus is mainly on the hovering state or the low-speed axial flow state. This kind of blade can generally provide better hovering performance, but in the process of forward flight, especially high-speed flight and large sideways Flying in the wind, the resistance of the blade itself is relatively large. According to theory, the greater the blade resistance, the greater the forward flight attitude angle of the aircraft, and an excessively large attitude angle will have a greater impact on the work of airborne equipmen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64C27/473
CPCB64C27/473
Inventor 毛一年郜奥林苏文兵赵龙智周东岳纪秀东刘璐马聪吴振凯初征
Owner BEIJING SANKUAI ONLINE TECH CO LTD