[AR] Re: Hydrogen and oxygen used as pressurizing gasses
- From: "John Stoffel" <john@xxxxxxxxxxx>
- To: arocket@xxxxxxxxxxxxx
- Date: Sat, 12 Dec 2015 22:35:32 -0500
"rcktman" == rcktman <<dmarc-noreply@xxxxxxxxxxxxx>(Redacted sender
"rcktman" for DMARC)> writes:
rcktman> If gaseous H2 has absorbation bands in the IR, then tailoring
rcktman> the IR output of the heaters so the gas heats--and the liquid
rcktman> does not--has the potential to keep pressure up while
rcktman> minimizing boil off. The point here is that for a 2-4 minute
rcktman> burn one should design for a non-equilibrium state as between
rcktman> the gas and the liquid; stratify the gas, not the liquid.
It seems to me that the amount of energy required to run those IR LEDs
to head the Hydrogen gas is a non-trivial amount, and the batteries
(or generator hung off the turbopump shaft) is also a non-trivial
amount of weight.
And do IR LEDs even exist with that narrow and fixed bandgap? And
what about the waste heat from the LEDs? Does that get added into the
tank, or are the feedlines embeded around them for a little heat
exchang support?
Seems like alot of hassle and potential for boom when testing with
gaseous Hydrogen and you have a spark somewhere. Of course any spare
sparks will cause things to go boom.
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