Wing tank liner
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United States of America Patent
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-
Nov 16, 1999
Issued Date -
N/A
app pub date -
Jun 4, 1996
filing date -
Oct 22, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A liner for aircraft fuel tanks which limits the amount of fuel that can be spilled in the event of a crash. The liner is made of neoprene rubber with nylon reinforcing threads or other light-weight flexible material and is suspended within the fuel tank from a frame or from the tank itself. In normal operation the liner in effect floats in the fuel and is not subject to major stresses during flight since it does not carry the weight of the fuel. The liner can be retrofitted into existing aircraft with only minor modifications to the internal hardware in the tanks. It includes a valve in its discharge port that is either fully open for normal use, or is fully closed by the pilot when a crash is inevitable. The entire system (i.e. liner, frame, valves, etc.) is very small and lightweight, thereby adding minimal weight and fuel capacity loss penalties. The system can reduce the spillage from a ruptured wing tank by as much as 98%.
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