[ExI] A Geophysics problem
hkeithhenson at gmail.com
Wed Sep 30 02:30:57 UTC 2015
Sorry to interrupt the high culture fest.
I was explaining the electric propulsion from LEO up to GEO to someone
recently and he asked what happens to the 20-25 km/s exhaust. I
mentioned that it was well above escape velocity and he pointed out
that it's being expended in the Earth's magnetic field. That field
traps particles with a lot more energy than this exhaust. I realized
that I had no idea what would happen to the exhaust. I have asked
several people, including a PhD from Ad Astra Rockets. So far
nobody has an answer.
At peak production about 2 million tons of ionized hydrogen gets
expended between LEO and GEO every year.
It's a geophysics problem. Can you think of anyone I should ask?
Also I might note that it is hard to sell people on climate change, it
is at least that hard to sell a solution that gets humanity off fossil
fuels without crushing the economy.
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