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Composite Aircraft Joint

a composite material and aircraft technology, applied in the field of aircraft structures, can solve the problems of undesirable increase in the thickness of the entire skin panel to allow for the desired thickness of the joint with the fuselage, and the effect of increasing the thickness of the entire skin panel to achieve the desired thickness

Inactive Publication Date: 2012-11-15
THE BOEING CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This configuration enables the joint to carry higher loads with a safety factor, reducing the likelihood of performance decrease and maintaining the lightweight benefits of composite materials by strategically using metal only where necessary.

Problems solved by technology

Further, composite materials provide longer service life for various components in an aircraft.
The increase in thickness in the composite materials may be undesirable throughout the entire structure.
For example, with a skin panel made of composite materials, increasing the thickness of the entire skin panel to allow for a desired thickness for a joint with a fuselage may be undesirable.
The increased thickness of the entire skin panel may increase the weight of the aircraft and / or may reduce performance.

Method used

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Embodiment Construction

[0026]Referring more particularly to the drawings, embodiments of the disclosure may be described in the context of aircraft manufacturing and service method 100 as shown in FIG. 1 and aircraft 200 as shown in FIG. 2. Turning first to FIG. 1, an illustration of an aircraft manufacturing and service method is depicted in accordance with an advantageous embodiment. During pre-production, aircraft manufacturing and service method 100 may include specification and design 102 of aircraft 200 in FIG. 2 and material procurement 104.

[0027]During production, component and subassembly manufacturing 106 and system integration 108 of aircraft 200 in FIG. 2 takes place. Thereafter, aircraft 200 in FIG. 2 may go through certification and delivery 110 in order to be placed in service 112. While in service 112 by a customer, aircraft 200 in FIG. 2 is scheduled for routine maintenance and service 114, which may include modification, reconfiguration, refurbishment, and other maintenance or service.

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Abstract

A method and apparatus comprises a first number of layers of a composite material for a wing, a second number of layers of the composite material for the wing, and a metal layer located between the first number of layers and the second number of layers in the wing. The metal layer has a first thickness at a first area configured to receive a number of fasteners and a second thickness at a second area.

Description

BACKGROUND INFORMATION[0001]1. Field:[0002]The present disclosure relates generally to aircraft and, in particular, to structures in aircraft. Still more particularly, the present disclosure relates to a composite joint in an aircraft.[0003]2. Background:[0004]Aircraft are being designed and manufactured with greater and greater percentages of composite materials. Some aircraft may have more than 50 percent of their primary structure made from composite materials. Composite materials are used in an aircraft to decrease the weight of the aircraft. This decreased weight improves performance features, such as, for example, without limitation, payload capacities and fuel efficiencies. Further, composite materials provide longer service life for various components in an aircraft.[0005]Composite materials are tough, light-weight materials, created by combining two or more dissimilar components. For example, a composite material may include fibers and resins. The fibers may be in the form ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B64C1/26B32B3/26B32B3/00B32B37/12B64C3/20
CPCB29C70/088B29C70/865B29K2705/00B29L2031/3085Y10T156/10B64C3/26Y02T50/433Y10T428/24612B64C1/26Y02T50/40
Inventor KAJITA, KIRK BENFRISCH, DOUGLAS ALLEN
Owner THE BOEING CO