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Sloped corner radius fillers to reduce the risk of delamination in laminated stringer assemblies

A technology of inclination angle and radius, applied in the direction of thin material processing, aircraft parts, chords/stringers, etc., can solve the problem of adding extra weight to the aircraft, achieve the effect of large operating load and enhanced joint ability

Active Publication Date: 2016-09-28
THE BOEING CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, adding extra weight to the aircraft is not desirable

Method used

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  • Sloped corner radius fillers to reduce the risk of delamination in laminated stringer assemblies
  • Sloped corner radius fillers to reduce the risk of delamination in laminated stringer assemblies
  • Sloped corner radius fillers to reduce the risk of delamination in laminated stringer assemblies

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Experimental program
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Embodiment Construction

[0030] This article describes techniques for using oblique angle radius fillers to enhance joining capabilities and reduce the risk of delamination in stringers. By using the technology and concepts presented in this article, compared with the existing stringers using conventional rectangular radius fillers, the stringer bar-shaped members can bear greater out-of-plane (lead) load by using inclined corner radius fillers, Without layering.

[0031] In the following specific embodiments, reference is made to the drawings that constitute a part of a specific embodiment or example and are shown in an illustrative manner. Referring now to the drawings, in which like reference numerals denote similar elements throughout several drawings, a technique for enhancing the joining ability and reducing the risk of delamination of the skin-stringer assembly using the inclined angle radius filler according to various embodiments will be described .

[0032] figure 2 A perspective view of a wing...

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PUM

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Abstract

This article describes the techniques used to enhance joint capability and reduce the risk of stringer delamination using slope angle radius fillers. Beveled corner radius fillers (302A, 302B) for enhanced bondability include top (303A, 303B) and bottom (305A, 305B) surfaces separated by thickness. The radius filler also includes a radius contact side (304A, 304B) having a cutting edge radius (307A, 307B) sized to match the radius of the web joint of the stringer. The radius filler also includes a pair of opposing non-parallel sides (306A, 308A, 306B, 308B) extending at an acute angle from the radius contact side and a rear side (310A, 310B) shorter than the radius contact side.

Description

Technical field [0001] The field of the present disclosure generally relates to radius fillers. In particular, the field of the present disclosure relates to oblique angle radius fillers that reduce the risk of delamination of laminated stringer assemblies. Background technique [0002] The aircraft wing box provides the structural core for the aircraft wing. The wing box includes a series of rib sections spaced longitudinally apart and connected to one or more spars and stringers extending the length of the wing box. The stringer is used to attach the wing skin or outer layer of the wing to the rib section of the wing box. The stringer may structurally support the wing skin and transfer the skin load to the internal structure of the wing. In the manufacture of carbon fiber reinforced plastic (CFRP) stringers, each stringer may be made of multiple structural parts or members that are cured and / or bonded together to form the stringer. [0003] For example, as shown in FIG. 1, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64C3/18B64C3/26
CPCB64C3/182B64C3/187B64C3/26Y10T428/24174Y10T428/24479Y10T428/24488Y10T29/49826
Inventor H·权D·P·墨菲K·B·李
Owner THE BOEING CO
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