NDLI: Hybrid composites for lh2 fuel tank structure

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Hybrid composites for lh2 fuel tank structure

Content Provider	NASA Technical Reports Server (NTRS)
Author	Johnston, Norman J. Loos, Alfred C. McMahon, William M. Grimsley, Brian W. Cano, Roberto J.
Copyright Year	2001
Description	The application of lightweight carbon fiber reinforced plastics (CFRP) as structure for cryogenic fuel tanks is critical to the success of the next generation of Reusable Launch Vehicles (RLV). The recent failure of the X-33 composite fuel tank occurred in part due to microcracking of the polymer matrix, which allowed cryogen to permeate through the inner skin to the honeycomb core. As part of an approach to solve these problems, NASA Langley Research Center (LaRC) and Marshall Space Flight Center (MSFC) are working to develop and investigate polymer films that will act as a barrier to the permeation of LH2 through the composite laminate. In this study two commercially available films and eleven novel LaRC films were tested in an existing cryogenics laboratory at MSFC to determine the permeance of argon at room temperature. Several of these films were introduced as a layer in the composite to form an interleaved, or hybrid, composite to determine the effects on permeability. In addition, the effects of the interleaved layer thickness, number, and location on the mechanical properties of the composite laminate were investigated. In this initial screening process, several of the films were found to exhibit lower permeability to argon than the composite panels tested.
File Size	292769
Page Count	12
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20040086019
Archival Resource Key	ark:/13960/t3gx98691
Language	English
Publisher Date	2001-01-01
Access Restriction	Open
Subject Keyword	Composite Materials Hybrid Composites Microcracks Thickness Honeycomb Cores X-33 Reusable Launch Vehicle Cryogenics Mechanical Properties Carbon Fiber Reinforced Plastics Composite Structures Room Temperature Failure Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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