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43Fw: How to make N2O from N2, O2?

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  • Abrigon Gusiq
    Sep 27, 2009
    • 0 Attachment
      Hum, ideas?


      ----- Original Message -----
      From: "mechdan" <mechdan@...>
      To: <sfconsim-l@yahoogroups.com>
      Sent: Saturday, September 26, 2009 2:58 PM
      Subject: [sfconsim-l] How to make N2O from N2, O2?

      > I've been thinking about the potential usefulness of "aeroscoop"
      > satellites which scoop up nitrogen and oxygen from the upper
      > atmosphere and use an electric thruster to counteract drag.
      > LOX is obviously a useful resource, and liquid nitrogen could
      > be useful for aeroramjet fuel (if aeroramjet technology is
      > successfully developed, of course).
      > What about nitrous oxide? Is there a good way to convert
      > nitrogen and oxygen into nitrous oxide without too much
      > hardware?
      > If so, then N2O could be useful both as an oxidizer for biprop rockets
      > (along with fuel from Earth) and as a sustainable monoprop fuel.
      > I'm also pondering the design of the aeroscoop satellite itself. In the
      > past, I've suggested a solar powered design which uses an elliptical orbit
      > for brief dips into the upper atmosphere. However, I wonder if it might
      > not be better to use a near circular orbit.
      > See, a lot of the losses involved in an electric rocket is the energy
      > required to ionize the propellant. I expect it will be made even worse
      > than usual for this application, since you don't have the choice of an
      > optimized propellant--you'll be using 80/20 nitrogen/oxygen propellant,
      > rather than something optimized for easy ionization.
      > As such, I'm thinking to avoid ionizing the propellant by using reaction
      > mass that's already ionized--namely, the intake gas. The ramscoop
      > compression heats the intake gas into hot plasma. There's not going to be
      > a more efficient time to run this reaction mass through your electric
      > thruster. Since solar power provides a constant trickle of energy, you're
      > going to want a constant duty cycle...sort of.
      > Of course, you don't actually get 24/7 power but rather 12/7 power. So
      > you could have a near circular orbit which spends the night at a higher
      > lower drag altitude.
      > Does that make sense?
      > Isaac Kuo
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