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Propeller, power assembly and aircraft

A technology for power components and propellers, applied in the field of flight, can solve the problems of poor economy and environmental friendliness of straight blades, unsatisfactory effects of noise and drag reduction, tip vortex and cavitation, etc. It is not easy to achieve. Serious injury, small stress, low resistance effect

Pending Publication Date: 2022-03-01
EHANG INTELLIGENT EQUIP GUANGZHOU CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, most of the propellers used in ordinary airplanes use straight blades, and the tip of the blade has not been specially treated, which is prone to generate tip vortex and cavitation, resulting in greater noise and increased resistance. Therefore, the economy and performance of straight blades Environmental friendliness is not good
Even partially improved propeller tips, such as adding wingtips to the tip, are not ideal for improving noise and reducing drag

Method used

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  • Propeller, power assembly and aircraft
  • Propeller, power assembly and aircraft
  • Propeller, power assembly and aircraft

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Embodiment Construction

[0049] The present disclosure will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific implementation manners described here are only used to explain relevant content, rather than to limit the present disclosure. It should also be noted that, for ease of description, only parts related to the present disclosure are shown in the drawings.

[0050] It should be noted that, in the case of no conflict, the implementation modes and the features in the implementation modes in the present disclosure can be combined with each other. The present disclosure will be described in detail below with reference to the drawings and embodiments.

[0051] Existing propeller wingtips generate greater noise and increase drag, making the propeller less efficient. At the same time, the sharp oar tip may also cause cuts to personnel.

[0052] see figure 1 As shown, according to an embodiment of the present disclosure, a prope...

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Abstract

The invention provides a propeller, a power assembly and an aircraft, relates to the technical field of flight, and aims to solve the technical problems of high noise and resistance increase caused by the fact that a wing tip of the propeller is easy to generate vortexes and cavitation bubbles. The propeller comprises a central column and at least two blades, the wing root of each blade is arranged on the central column, each blade is provided with two blade sections and a blade tip transition section, the wing root of each blade section is connected to the central column, and each blade section is provided with a windward first front edge and a first rear edge opposite to the first front edge; the wingtip transition section is a curved-surface-shaped transition section, the wingtip transition section is provided with a second front edge and a second rear edge opposite to the second front edge, the first front edges of the two blade sections are in transition connection through the second front edge, the first rear edges of the two blade sections are in transition connection through the second rear edge, and the second front edge and the second rear edge are both arc-shaped edges. The propeller provided by the invention is used in the aircraft.

Description

technical field [0001] The present disclosure relates to the field of flight, and in particular to a propeller, a power assembly and an aircraft. Background technique [0002] At present, most of the propellers used in ordinary airplanes use straight blades, and the tip of the blade has not been specially treated, which is prone to generate tip vortex and cavitation, resulting in greater noise and increased resistance. Therefore, the economy and performance of straight blades Environmental friendliness is not good. Even some improved propeller tips, such as adding wingtips to the tip, are not ideal for improving noise and reducing drag. Contents of the invention [0003] The object of the present invention is to provide a propeller, which is used to reduce the vortex and cavitation at the tip of the propeller, and reduce noise and resistance. The aircraft using the propeller can reduce the noise of the aircraft and reduce the impact on the surrounding people when flying ...

Claims

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Application Information

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IPC IPC(8): B64C11/20B64C11/18
CPCB64C11/20B64C11/18
Inventor 胡华智姜国军
Owner EHANG INTELLIGENT EQUIP GUANGZHOU CO LTD
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