Bi-directional substrate design for aircraft escape slide airbeams
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United States of America Patent
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Issued Date -
Feb 9, 2006
app pub date -
Aug 5, 2005
filing date -
Aug 9, 2004
priority date (Note) -
Abandoned
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Abstract
A coated, bi-directional substrate design for an aircraft escape slide airbeam, where the longitudinal strength and hoop strength of the substrate and the coating applied thereto are optimized to the application. Less than 45% of the total substrate fiber content is in the longitudinal direction of the substrate, and the longitudinal strength of the substrate is approximately 50% of the hoop strength. The substrate is constructed of nylon, polyester, aramid, para-aramid or liquid crystal polymer fibers, and either polyurethane coatings and adhesives or polyether polyurethane coatings and adhesives. The warp yarns are less than 1/2 the denier of the fill yarns and are woven in groups of 2 or more yarns to improve the tear strength of the fabric in the warp direction.
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