Propellers, power components and aircraft
A technology of propellers and blades, which is applied in the field of aircraft, can solve the problems of loud noise, overall aircraft noise, and poor user experience, and achieve the effects of reducing noise, improving pulling force and efficiency, and reducing air resistance
Active Publication Date: 2022-04-08
SZ DJI TECH CO LTD
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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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[0053] 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. The implementations described in the following exemplary examples do not represent all implementations 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.
[0054] The terminology used in the present invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used herein and in the appended claims, the singular forms "a", "the", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the term "and / or" as use...
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A propeller (100), including blades (20). The blade (20) comprises a blade root (25), a blade tip (26) away from the blade root (25), a pressure surface (21), a suction surface (22) opposite to the pressure surface (21), and a (21) and the leading edge (24) of one side of the suction surface (22), the trailing edge (23) that is connected to the pressure surface (21) and the other side of the suction surface (22), and is formed on the tip (26) ) of the swept portion (261). The leading edge (24) extends obliquely from the blade root (25) along the spanwise direction toward the side where the pressure surface (21) is located, and inverts and inclines toward the side where the suction surface (22) is located near the blade tip (26), The swept back portion (261) extends obliquely from the front edge (24) to the rear edge (23). It also includes a power assembly and an aircraft. The propeller (100), power assembly and aircraft using the blade (20) can not only reduce air resistance, improve pulling force and efficiency, increase the follow-up distance of the aircraft and improve the flight performance of the aircraft, but also reduce the number of blades at work. The noise generated when hovering makes the aircraft quieter when hovering and improves the user experience.
Description
technical field [0001] The invention relates to the field of aircraft, in particular to a propeller, 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, a power assembly and an aircraft. [0005] A propeller according to an embodiment of the present invention includes blades. [0006] The blade inclu...
Claims
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IPC IPC(8): B64C27/467B64C27/473
CPCB64C27/467B64C27/473
Inventor 刘翊涵陈鹏邓涛
Owner SZ DJI TECH CO LTD