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A propeller assembly, a power assembly and an aircraft

A technology for power components and propellers, applied in the field of aircraft, can solve the problems of high overall noise, poor user experience, and loud noise of aircraft, and achieve the effects of quiet hovering, improving pulling force and efficiency, and reducing noise.

Inactive Publication Date: 2019-10-15
SZ DJI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the propeller in the prior art is rotating, the turbulent flow of each part of the blade and the impact of the downwash airflow on the structure of the aircraft shell will generate relatively large noise
It is often superimposed with motor noise and structural vibration noise, and amplifies noise in certain frequency bands, resulting in a larger overall aircraft noise and poor user experience

Method used

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  • A propeller assembly, a power assembly and an aircraft
  • A propeller assembly, a power assembly and an aircraft
  • A propeller assembly, a power assembly and an aircraft

Examples

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Embodiment Construction

[0037] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. Embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.

[0038] It should be understood that although the terms first, second, third, etc. may be used in the present invention to describe various information, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of the present invention, first information may also be called sec...

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PUM

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Abstract

A propeller assembly (100), a power assembly (200), and an aircraft (1000) are provided. The propeller assembly (100) includes a first paddle (10) including first paddle blades (11) and a second paddle (20) including second paddle blades (21). The first paddle blades (11) include first paddle roots (111) and first paddle tips (112) facing away from each other, first paddle stress surfaces (113) and first paddle suction surfaces (114) opposite to the first paddle stress surfaces. The second paddle blades (21) include second paddle roots (211) and second paddle tips (212) facing away from each other, second paddle stress surfaces (213), and second paddle suction surfaces (214) opposite to the second paddle stress surfaces. The first paddle tips (112) extend obliquely along the extending direction of the first paddle blades (11) toward a side where the first paddle suction surfaces (114) are located, and the second paddle tips (212) extend obliquely along the extending direction of the second paddle blades (21) towards one side where the second paddle stress surfaces (213) are located. Accordingly, the propeller assembly (100) can increase the pulling force and the efficiency and allows the aircraft (1000) to be quieter when hovering.

Description

technical field [0001] The invention relates to the field of aircraft, in particular to a propeller assembly, a power assembly and an aircraft. Background technique [0002] The propeller on the aircraft, as an important key component of the aircraft, is used to convert the rotation of the motor or engine shaft into thrust or lift. [0003] During the rotation of the propeller in the prior art, the turbulent flow of each part of the blade and the impact of the downwash airflow on the shell structure of the aircraft will generate relatively large noise. It is often superimposed with motor noise and structural vibration noise, and amplifies noise in certain frequency bands, resulting in a larger overall aircraft noise and poor user experience. Contents of the invention [0004] Embodiments of the present invention provide a propeller assembly, a power assembly and an aircraft. [0005] A propeller assembly according to an embodiment of the present invention includes a firs...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C11/20
CPCB64C11/20B64U50/13B64U30/29B64C27/463B64C27/473B64D27/02F01D5/02F01D5/30
Inventor 刘翊涵陈鹏邓涛
Owner SZ DJI TECH CO LTD