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Device for attaching a hollow part

A hollow and component technology, applied in the field of aircraft engines, can solve problems such as difficulty in fastening hollow components

Inactive Publication Date: 2014-06-25
GERAKL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, while these flexible fastening tabs are great for fastening larger sized parts together, they are difficult to use for fastening smaller sized hollow parts

Method used

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  • Device for attaching a hollow part
  • Device for attaching a hollow part
  • Device for attaching a hollow part

Examples

Experimental program
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Effect test

Embodiment Construction

[0023] The invention proposes an assembly comprising at least one fastening device, one or more hollow parts, and one or more structural parts, the hollow part and the structural part being made of metallic or composite material.

[0024] figure 2 Shown is an exhaust assembly 200 for a helicopter engine comprising an exhaust cone 210 and a convergent nozzle 220 coaxially secured to the exhaust cone by three arms 230 body 210. The exhaust cone 210 and the nozzle 220 are made of composite material. However, one or even both of these two parts may be made of metallic material. The arm portion 230 is made of thermal structural composite material, in particular CMC material.

[0025] In a known manner, CMC material components consist of fiber reinforcements made of refractory fibers (carbon fibers or ceramic fibers) and densified by a ceramic matrix, in particular made of carbides, nitrides, refractory oxides etc. Typical examples of CMC materials are C-SiC materials (carbon f...

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PUM

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Abstract

The invention relates to a attachment device (240) for attaching a hollow part consisting of two opposing walls to at least one structural part. The device includes a one-piece body (241) made of a metal material and having two main surfaces (242, 243) extending longitudinally between first and second ends (244, 245) of said body. Each main surface (242; 243) includes a bearing portion (2420; 2430) in the vicinity of the first end (244) of said body, which bearing portion is intended to be pressed against an inner surface of one of the two walls of the hollow part, each bearing portion (2420; 2430) comprising an attachment opening (2421) for receiving an attachment member. The bearing portions (2420; 2430) are separated from one another by a slot (246) extending from the first end (244) of said body (241) to a predetermined depth in said body.

Description

Background technique [0001] The present invention relates to the fastening and integration of hollow parts, in particular but not limited to hollow parts made of composite material, within an assembly comprising one or more parts, to which the hollow part is to be fastened, For example aircraft engines. [0002] Figure 1 shows a nozzle 100 for a helicopter engine having an exhaust cone 110 on which a tapering nozzle 120 is coaxially mounted by means of three arms 130, each arm The portion 130 is formed by a hollow body 131 , said arms being evenly distributed between the cone 110 and the nozzle 120 . The exhaust cone 110, the nozzle 120 and the arm 130 are all made of a composite material, such as a ceramic matrix composite (CMC) material. Each arm 130 is secured first at one end thereof to the outer wall of the exhaust cone 110 via two corner tabs 132 integrally formed with the main body 131 of the arm, and second at its other end via Corner tabs 133 integrally formed with...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02K1/04F02K1/80F02D9/04F23R3/18F01D25/28
CPCY02T50/672F01D9/042F05D2260/30F02K1/04F02K1/80Y02T50/673F23R3/20F23R3/283F23R3/60F01D25/28F05D2230/642Y02T50/60Y10T403/33F02K1/822
Inventor M·安德洛埃P·迪克罗
Owner GERAKL