[AR] Re: GH2 pressurization
- From: George Herbert <george.herbert@xxxxxxxxx>
- To: arocket@xxxxxxxxxxxxx
- Date: Mon, 2 Aug 2021 15:26:46 -0700
On Aug 2, 2021, at 1:02 AM, Peter Fairbrother <peter@xxxxxxxxxx> wrote:
On 01/08/2021 23:07, roxanna Mason wrote:
But a small amount of air/oxygen won't make an explosive mixture even with
GH2 which has a lower explosive limit of ~ 4%.
It's the upper explosive limit of 74% hydrogen by volume which matters - so
up to 26% air is, theoretically, safe...
Keep in mind that UEL/LEL are canonically listed at an assumed 1 atmosphere.
That doesn’t necessarily mean things can’t burn or detonate in similar
fractions at higher pressures. You’ll need to check conditions along a flight
and ground test evolving pressure and constituents conditions range.
-George
Sent from my iPhone
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