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open channel reinforcement

An open channel, stiffener technology for chords/stringers, other household appliances, transportation and packaging, which can solve problems such as increased labor manufacturing costs

Active Publication Date: 2022-06-07
THE BOEING CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such specialized tools may result in further increases in labor as well as manufacturing costs

Method used

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Embodiment approach

[0041] 1. An open channel stiffener for reinforcing a panel, the open channel stiffener comprising a bonding flange for bonding the rib to a panel by means of an adhesive layer formed between the bonding flange and the panel , the cross-sectional shape of the rib is configured so that the shear center of the rib is substantially aligned with the centroid of the rib and the shear center is approximately aligned with the edge of the bonding layer.

[0042] 2. The reinforcing rib of clause 1, further comprising a plurality of perforations through the bonding flange, the perforations allowing wicking of adhesive into the perforations to create a mechanical interlock between the bonding flange and the panel.

[0043] 3. The stiffener of clause 2, further comprising a plurality of raised areas that texture the bonding surface of the bonding flange to provide a flow path for the adhesive between the bonding flange and the panel.

[0044] 4. A reinforcing rib according to clause 2, wh...

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Abstract

The present invention provides an open channel stiffener for reinforcing a panel, the open channel stiffener includes a bonding flange for bonding the rib to a panels to form stiffened panels. The open channel stiffener has a cross-sectional shape that aligns or substantially aligns the center of shear of the rib with the centroid of the rib and approximately aligns the center of shear with the edge of the bondline, and eliminates Demand for soft strips of radius filler. A plurality of perforations may be formed through the bonding flange to allow adhesive to wick into the perforations to create a mechanical interlock between the bonding flange and the panel.

Description

technical field [0001] The present disclosure relates generally to composite reinforced support structures, and more particularly, to low-cost open channel stiffener construction and to related methods of reinforcing composite panels, such as used in aircraft. Background technique [0002] Composite materials are used in a wide variety of applications in many different industries due to their high strength and stiffness, low weight, corrosion resistance, and other good properties. In the aerospace industry, composite materials have been widely used in the manufacture of aircraft structures and components such as aircraft ribs, spars, panels, fuselages, wings, wing boxes, fuel tanks, and empennages for aircraft structures because composite materials The material is lightweight and strong, and thus provides fuel economy as well as other benefits. For example, aircraft wing skins and spar webs and other generally flat components may be formed from stiffened composite panels in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64C1/00
CPCB64C2001/0072B64C1/06B64C3/18B29L2031/737B29C65/4835B29C65/562B29C65/72B29C66/028B29C66/112B29C66/131B29C66/21B29C66/524B29C66/532B29C66/71B29C66/721B29C66/7212B29L2031/7172B29C66/73751B29C66/73752B29C66/73755B29C66/73941B29C66/836B29C66/863B29C66/3034B29C66/72141B29C66/73756B64C3/182Y10T428/24174Y10T428/24182Y10T428/24752Y10T428/24777Y10T428/24322Y10T428/24331B29L2031/3085B29L2031/3076B29L2031/3082B29C66/02245B29C66/0246B29C65/542B29C66/02242B29C66/30325B29C66/7392B29C66/7394B29K2307/04B29K2277/10B29K2309/08B29K2063/00B29K2067/00B29K2031/00B29K2071/00B29C44/12B64C3/24B32B7/12B32B3/266B32B2605/18B32B2607/00B32B3/28B29D99/0014B29L2031/008B29L2031/001B29C65/548B29C65/546B29C66/0224B29C65/527B29C65/52B29C65/54B29C66/30321B29C66/7315B29C66/474B29C66/10B29C66/20B29C66/30322B29C66/303B64C3/185B64C3/26B29C65/48
Inventor L·R·德巴尔德M·A·迪里甘A·N·瑞恩M·拉姆纳特
Owner THE BOEING CO