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Composite material air propeller and preparation die and preparation method thereof

An air propeller, composite material technology, applied in propeller, transportation and packaging, aircraft parts and other directions, can solve the problem of large induced resistance, and achieve the effect of reducing induced resistance, beneficial to application and development, and easy to manufacture

Inactive Publication Date: 2013-08-21
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The propeller is like a rotating wing, and the speed is the highest at the tip of the propeller. Ordinary propellers do not have a tip structure that functions like a winglet, and the induced resistance is relatively large.

Method used

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  • Composite material air propeller and preparation die and preparation method thereof
  • Composite material air propeller and preparation die and preparation method thereof
  • Composite material air propeller and preparation die and preparation method thereof

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Embodiment Construction

[0025] The present invention will be specifically introduced below in conjunction with the accompanying drawings and specific embodiments.

[0026] figure 1 It is the overall schematic diagram of the composite material air propeller of the present invention; figure 2 for figure 1 Schematic diagram of the enlarged local structure of part A of ; image 3 for figure 1 B-B direction sectional view; Figure 4 It is a schematic diagram of the split structure of the composite material air propeller of the present invention.

[0027] Such as Figure 1-Figure 4 Shown: composite material air propeller, including upper wall plate 1 and lower wall plate 2, in this embodiment, the material of the upper wall plate and lower wall plate is carbon fiber composite material, of course, it can also be boron fiber composite material . The upper and lower surfaces of the upper wall plate 1 are respectively the outer surface of the upper wall plate and the inner surface of the upper wall pla...

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Abstract

The invention relates to a composite material air propeller and a preparation die and a preparation method thereof. The composite material air propeller comprises an upper wall plate and a lower wall plate, wherein the upper surface and the lower surface of the upper wall plate are respectively an upper wall plate outer appearance surface and an upper wall plate inner appearance surface; the upper surface and the lower surface of the lower wall plate are respectively a lower wall plate inner appearance surface and a lower wall plate outer appearance surface; the upper wall plate outer appearance surface and the upper wall plate inner appearance surface are fixedly connected with each other through peripheral glue to form a composite material air propeller whole body; and a cavity is formed inside the composite material air propeller whole body. The composite material air propeller is of a split type structure, and the composite material air propeller is hollow; therefore, the composite material air propeller is simple in structure, easy to manufacture, low in cost and light in weight and has the structural characteristic that the tip is bent up, so that the inducing resistance of the composite material air propeller is greatly reduced; and the composite material air propeller is very favorable for application and development of multi-rotor-wing aircrafts.

Description

technical field [0001] The invention relates to a composite material air propeller and its preparation mold and preparation method, more specifically relates to a multi-rotor aircraft propeller and its preparation mold and preparation method, and belongs to the technical field of flying devices. Background technique [0002] At present, multi-rotor aircraft (aircraft model or UAV) mainly use solid plastic propellers or solid carbon fiber composite propellers. The diameter of such propellers is small, and such propellers with large sizes are heavy and heavy, so they are not suitable for multi-rotor aircraft. . Traditional larger-diameter composite material propellers generally have a complex structure, usually consisting of skins, girders, filled foam (or honeycomb), counterweight supports, and counterweights, which are difficult to manufacture and costly, and weigh more than solid propellers Light, but the weight is still not suitable for multi-rotor aircraft. Usually, whe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C11/00B64C11/24B29C69/00B29C43/36
Inventor 潘荣华昂海松武震旭
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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