posted on May, 24 2022 @ 05:39 PM
a reply to:
generik
you bring up an interesting point, there is a finite(for all practical proposes) amount of He in the atmosphere. We got a lot of the He from
radioactive decay and i would guess some from the solar winds.
He is getting to be a very expensive gas, the place i went to school at used a lot of liquid He and they would NEVER just vent it off to the
atmosphere, they had an elaborate collection methods to recollect and liquify the gas, only needing top off occasionally.
that being said LTAV these days aren't like the Hindenburg with cloth skin impregnated with lacquer and aluminum but with advanced polymers and
coatings that do a pretty good job at keeping the gas in.
you could also 'cut' it with hydrogen, as we all know helium does not burn so in the event of a crash it would act like its own fire fire
extinguisher, it would displace all the oxygen like a reverse halon system.
The military sure thinks they can be used for cargo and that can be a person or a tank.
having a HALE aircraft who is only limited by crew endurance or consumables that can sit on the edge of space and for relatively a low cost seems like
a winner to me.
imagine not needing c130's or whatever to move LARGE ampounts of equipment around with no jet fuel or gas.
and even if it is only used as a mass mover in a friendly sky, the saving on gas alone would be huge.