Great idea (since I was thinking the same thing....but thought it was only for military so far). EAA should have records of the vendors at Oshkosh if you can remember the year(s).
Dan C

On Apr 19, 2009, at 10:46 AM, Ed Burkhead wrote:






The last times I was able to slowly go through the vendor’s buildings at Oshkosh, many years ago, there was always a display of a metal sandwich of crumpled metal. The tank would be opened and filled with this stuff then re-sealed.



The stuff allowed free, but slow, flow of fuel in the tank while only using up 3% of the volume. The tank could not gush out its fuel.



They showed video of tracer rounds being shot through the tank and, while the fuel would flow out and catch fire, it came out slowly enough that there was a small flame – no gush, no fireball.



Is this stuff still on the market? If so, does the FAA approve this for certificated planes or is it only for experimentals? Is this an option that might work instead of the bladder idea?



Ed



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