Composite Truss Panel Having Fluted Core

a composite truss panel and core technology, applied in the field of composite structures, can solve the problems of difficult use of composite materials for fuel tanks, laminated fluted design, and the need to carry the required compression and shear load, and achieve the effects of reducing weight, buckling, bending, and increasing the overall structural properties of the truss panel
US20110300343A1Inactive Publication Date: 2011-12-08THE BOEING CO
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
THE BOEING CO
Publication Date
2011-12-08
Estimated Expiration
Not applicable · inactive patent

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Abstract

A composite truss structure employs a sandwich-in-sandwich construction in which a composite fluted core is sandwiched between two facesheets, and at least one structural foam stiffener is sandwiched within the core or between the facesheets and / or the core.
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Description

BACKGROUND INFORMATION1. FieldThis disclosure generally relates to composite structures, and deals more particularly with a sandwich-in-sandwich composite truss panel having a fluted core, as well as a method for making the truss panel.2. BackgroundAerospace vehicles typically require lightweight structural members that maximize payload carrying capacity and mission capabilities. For example, launch and space exploration vehicles often make use of composite materials in areas such as heat shields, nose cones and payload fairings in order to reduce weight while satisfying performance requirements. In order to further reduce vehicle weight, additional components such as cryogenic fuel tanks used to store pressurized propellants may be fabricated from composite materials. However, the use of composite materials for fuel tanks is challenging because of the severe environmental conditions to which the components of the tank may be subjected, as well as possible chemical incompatibilities...

Claims

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