Method of Making Core-Stiffened Structure

a core-stiffened structure and core material technology, applied in the direction of lamination, chemistry apparatus and processes, vehicle components, etc., can solve the problems of core material being pushed laterally along the tool surface, affecting the manufacture of large-celled composite structures, and affecting the quality of core materials

Inactive Publication Date: 2019-11-28
TEXTRON INNOVATIONS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

Enables the utilization of large-celled honeycomb cores by inhibiting skin protrusion and reducing lateral movement, thereby improving the manufacturing process and structural integrity of core-stiffened composite structures.

Problems solved by technology

Thus, while core-stiffened structures made from larger-celled honeycomb core 101 weigh less than similar structures made from small-celled honeycomb core 101, the manufacture of large-celled composite structures has been limited.
Some typical core materials are subject to moisture absorption or corrosion resulting from trapped moisture within the core.
Such a scenario includes the risk of the core material being pushed laterally along the tool surface.

Method used

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  • Method of Making Core-Stiffened Structure
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  • Method of Making Core-Stiffened Structure

Examples

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Embodiment Construction

[0022]Illustrative embodiments of the present application are described below. In the interest of clarity, not all features of an actual implementation are described in this specification. It will of course be appreciated that in the development of any such actual embodiment, numerous implementation-specific decisions must be made to achieve the developer's specific goals, such as compliance with system-related and business-related constraints, which will vary from one implementation to another. Moreover, it will be appreciated that such a development effort might be complex and time-consuming but would nevertheless be a routine undertaking for those of ordinary skill in the art having the benefit of this disclosure.

[0023]In the specification, reference may be made to the spatial relationships between various components and to the spatial orientation of various aspects of components as the devices are depicted in the attached drawings. However, as will be recognized by those skilled...

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Abstract

A method of making a core-stiffened structure includes the steps of providing a honeycomb core having an adhesive disposed on first and second surfaces thereof, providing a first skin and a second skin, and assembling the first skin, the second skin, and the honeycomb core to form the core-stiffened structure. The method further includes the steps of curing the core-stiffened structure and inhibiting at least one of the first skin and the second skin from protruding into at least one cell of the honeycomb core during the step of curing the core-stiffened structure.

Description

[0001]This application is a divisional of U.S. patent application Ser. No. 15 / 050,564, filed 23 Feb. 2016, titled “Method of Making Core-Stiffened Structure,” which is a divisional of U.S. patent application Ser. No. 13 / 521,367, filed 10 Jul. 2012, titled “Method of Making Core-Stiffened Structure,” both of which are incorporated herein for all purposes.1. FIELD OF THE INVENTION[0002]The present application relates in general to the field of core-stiffened structures.2. DESCRIPTION OF RELATED ART[0003]Composite structures often comprise honeycomb core disposed between and adhesively bonded to an inner skin and an outer skin. One example of such honeycomb core is a honeycomb core 101, shown in FIG. 1. Generally, honeycomb core 101 includes a plurality of cells 103 (only one labeled for clarity) defined by cell walls 105 (only one labeled for clarity). Each of the plurality of cells 103 exhibits a width W. Typically, the plurality of cells 103 have substantially the same width W but, ...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): B32B37/14B32B7/12B32B3/12
CPCB32B37/146B32B7/12B32B37/12B32B3/12B32B37/1284B32B2250/40B32B2605/18
InventorHETHCOCK, JR., JAMES D.NUNN, JR., KENNETH E.MAY, CARL A.
OwnerTEXTRON INNOVATIONS