Fire-resistant cowls, particularly for aircraft engines
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United States of America Patent
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-
Apr 5, 1988
Grant Date -
N/A
app pub date -
Sep 2, 1986
filing date -
Jan 9, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A panel structure useful in constructing cowlings for aircraft engines includes a honeycomb core composed of glass fibers impregnated with phenol resin, an inner covering attached to an inner surface of the honeycomb core which is made of carbon fibers impregnated with phenol resin and which is porous, and an outer covering attached to an outer surface of the honeycomb core which is made of carbon fibers impregnated with phenol resin and which is leaktight. The outer covering is formed by heating the carbon fibers and phenol resin to cause polymerization while subjecting the outer covering first to vacuum and then to high pressure.
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