Three-dimensional weaving composite integrally-formed rotor wing blade and manufacturing method thereof

A composite material and three-dimensional weaving technology, which is applied to propellers, aircraft parts, transportation and packaging, etc., can solve problems such as low interlayer strength, poor integrity, and inability to ensure the uniformity of blades, so as to avoid structural load-bearing stiffness and strength The effect of reducing, improving fatigue performance and damage tolerance, avoiding delamination and bond failure

Inactive Publication Date: 2015-07-29
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using this process to make blades is complicated, and the laying of carbon fiber cloth depends on manual experience, the production efficiency is low, and the uniformity between different blades cannot be guaranteed. Bonded together, the integrity is poor, the interlayer strength is low, and it is prone to delamination damage when subjected to large loads or external impacts, and cannot fully utilize the performance advantages of carbon fiber materials

Method used

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  • Three-dimensional weaving composite integrally-formed rotor wing blade and manufacturing method thereof
  • Three-dimensional weaving composite integrally-formed rotor wing blade and manufacturing method thereof
  • Three-dimensional weaving composite integrally-formed rotor wing blade and manufacturing method thereof

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Embodiment Construction

[0030] The present invention will be further described in detail with reference to the accompanying drawings and embodiments.

[0031] refer to figure 1 and figure 2 , the present invention provides a three-dimensional braided composite material integrally formed rotor blade, the root connection joint 1, the upper and lower airfoil skins 2, the load-bearing girder 3 and the metal bushing 4 of the root connection hole of the rotor blade are formed during the weaving process. One-piece construction. Such as figure 2 As shown, the braided yarn bundle runs continuously through the load-carrying girder 3 and the upper and lower airfoil skins 2, ensuring that these two components are integrally formed during the braiding process.

[0032] The present invention also provides a method for manufacturing the integrally formed rotor blade of the three-dimensional braided composite material, the specific steps are as follows:

[0033] Step 1: Paddle weaving process design:

[0034]...

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Abstract

The invention discloses an integrally-formed three-dimensional weaving composite rotor wing blade and a manufacturing method thereof. The blade mainly consists of main parts of a root connecting joint, a blade up and down wing surface skin and a bearing main beam. The overall structure of the blade adopts is integrally formed by carbon fibers through a three-dimensional weaving process, and is integrally cured through an RTM process so as to finish blade processing. Compared with the conventional laminated composite blade, the blade in the scheme does not need secondary cementing and machining, the continuity of the bearing fiber inside the blade structure is ensured, the bearing efficiency of the structure is improved, meanwhile, the advantages of the three-dimensional weaving composite are fully played, the problems of lamination and cementing failures of the laminated composite are avoided, and the fatigue property and damage tolerance of the blade are improved.

Description

technical field [0001] The invention provides a composite rotor blade integrally formed by a three-dimensional weaving process. Background technique [0002] At present, the rotor blades used by unmanned helicopters need to be preformed by laying carbon fiber unidirectional cloth or woven cloth with independent molds for the main components such as the upper and lower airfoils and the load-carrying beam, and then finally formed by bonding or co-curing. Using this process to make blades is complicated, and the laying of carbon fiber cloth depends on manual experience, the production efficiency is low, and the uniformity between different blades cannot be guaranteed. Bonded together, the integrity is poor, the interlayer strength is low, and it is prone to delamination damage when subjected to large loads or external impacts, and the performance advantages of carbon fiber materials cannot be fully utilized. The three-dimensional braided composite material uses a three-dimensi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C11/16B29C70/16B29C70/48
Inventor 胡龙陶国权
Owner BEIHANG UNIV
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