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A kind of preparation method of composite material driver

A composite material and composite material tube technology, which is applied in the field of composite material actuator preparation, can solve the problems of complex structure of intelligent wings, insufficient induced strain, short stroke, etc., so as to improve comprehensive efficiency, reduce structural complexity and weight, The effect of driving efficiency improvement

Active Publication Date: 2020-11-13
AVIC BASIC TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The structure of smart wings using conventional material structures / mechanisms is relatively complex, generally heavy, and requires very novel design concepts and ideas
Adaptive structures using smart materials, such as piezoelectric ceramics applied to helicopter intelligent rotors and shape memory alloys applied to engine compressor blades, have the advantages of relatively simple structure and high degree of integration, which can greatly reduce structural weight , but the disadvantage is that the induced strain generated by it is usually not large enough, the power is small and the stroke is short, and the efficiency is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] T300 (1k) carbon fiber tow is selected and woven into a circular tubular fiber preform by a three-dimensional braiding machine. The mold diameter is 12mm, the fiber braiding angle is ±30°, and the thickness is 0.5mm. The resin film infiltration process is used to compound the fiber preform and the silicone rubber film and complete the curing. After demoulding and repairing, metal pipe joints are installed at both ends to obtain a shortened composite material driver. When in use, compressed air is used as the driving medium, and the compressed air is filled into the composite material tube, and the composite material driver can produce different shortening deformations by adjusting the pressure of the compressed air.

Embodiment 2

[0026] Select T300 (6k) carbon fiber tow and Kevlar-29 aramid fiber tow, and weave them into a circular tubular fiber preform through a three-dimensional braiding machine in equal proportions. The mold diameter is 15mm, the fiber braiding angle is ±85°, and the thickness is 1mm. . The castable polyurethane is injected into the fiber preform by resin vacuum injection process and solidified. After demolding and repairing, metal pipe joints are installed at both ends to obtain an elongated composite driver. When in use, compressed air is used as the driving medium, and the compressed air is filled into the composite material tube, and the composite material driver can produce different elongation and deformation by adjusting the pressure of the compressed air.

Embodiment 3

[0028] Dyneema SK60 ultra-high molecular weight polyethylene fiber from DSM Company in the Netherlands is selected, and it is woven into a circular tubular fiber preform by a three-dimensional braiding machine. The diameter of the mold is 20mm, the fiber braiding angle is ±70°, and the thickness is 1mm. The resin film infiltration process is used to compound the SBS thermoplastic elastomer film and the fiber preform and complete the curing. After demoulding and repairing, metal pipe joints are installed at both ends to obtain an elongated composite material driver. When in use, use hydraulic oil as the driving medium, fill the hydraulic oil into the composite material tube, and adjust the pressure of compressed air to achieve different elongation and deformation of the composite material driver.

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Abstract

The invention belongs to the technical field of composite materials, and relates to a preparing method for a composite material driver. The composite material driver is in a circular tubular shape, and high performance fiber is adopted as a reinforcing body and thermoplastic elastomer or cross-linked rubber are adopted as resin matrix, functions of elongation and shortening can be realized under excitation of pressure, and applying to structures such as intelligent wings of a variant aircraft is achieved. An intelligent structure driven by the adopted composite material driver is high in integration degree, compared with pure mechanical hinging, structure complexity and the weight are reduced, and the driving efficiency is improved; compared with intelligent materials, technical maturity is high, the driving power and strain are large, and response is fast; and the mechanical property and the driving power of the composite material driver are significantly superior to the mechanical property and the driving power of a traditional manual muscle driver, comprehensive advantages are obvious, and the composite material driver is an ideal candidate structure unit for developing a deformational structure of an intelligent aircraft.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and relates to a preparation method of a composite material driver. Background technique [0002] In the field of aviation, the intelligent deformable aircraft is a multi-purpose, multi-morphic aircraft, which can be adaptively deformed according to the needs of the flight environment and combat missions, so as to exert the optimal flight performance of the aircraft. The key part of the intelligent deformable aircraft technology is the intelligent wing technology. Through the structural integration design, the intelligent wing manufactured has no hinges, no front and rear edge gaps, and the surface of the wing maintains continuous and smooth changes, which can reduce the complexity of the mechanism and reduce the Airflow loss, significantly improving the lift-to-drag ratio, reducing the weight and flight cost of the aircraft, and improving the overall performance of the aircraft. [...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64F5/10
CPCB64F5/10
Inventor 邓华高军鹏安学锋闫丽包建文
Owner AVIC BASIC TECH RES INST