[AR] Re: Portland State Aerospace Society
- From: Henry Spencer <hspencer@xxxxxxxxxxxxx>
- To: arocket@xxxxxxxxxxxxx
- Date: Mon, 25 Apr 2016 23:45:50 -0400 (EDT)
On Mon, 25 Apr 2016, David Weinshenker wrote:
(That said, a lot of rockets have used aluminum tanks for ethanol,
without difficulties that I know of.)
Is ethanol even particularly corrosive to aluminum in the first place?
"Particularly", perhaps not, but slightly, yes. Enough to be a concern on
prolonged exposure, anyway -- I believe it's an issue in substitution of
bioethanol for gasoline as a vehicle fuel. I'd expect that much depends
on details like the exact alloy and the water content of (and other
impurities in) the ethanol.
Henry
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