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- From: juan@nuala.hal.COM (John Thompson Reynolds)
- Newsgroups: sci.space
- Subject: Re: Aluminum as Rocket Fuel?
- Message-ID: <1hsfvsINN115@nuala.hal.COM>
- Date: 30 Dec 92 15:41:48 GMT
- References: <C01vE9.HsF.1@cs.cmu.edu>
- Sender: juan@hal.COM
- Distribution: sci
- Organization: HaL Computer Systems, Inc.
- Lines: 30
-
-
- In article <C01vE9.HsF.1@cs.cmu.edu>, 0004244402@mcimail.com (Karl Dishaw) writes:
- |> I dug into my notes from Aero/Astro project lab, we tried to make a
- |> fuel feeder for an aluminum/oxygen rocket:
- |>
- |> Isp = 118 sec (after accounting for loss due to solid particles)
- |> Must run oxidizer-rich since Al2O3 is a solid.
- |> Main hazard--oxygen getting into Al storage tank.
- |>
- |> I'd love to see some info on the Wickman project. The Isp is too low to
- |> be really useful, but it would be great for circularizing orbits on mass
- |> driver-launched payloads, or maybe cheap transport on the lunar
- |> surface.
-
- Thanks for the info.
-
- My thoughts were along the line of constructing a hollow cylinder of
- powdered aluminum, into which you would pump LOX at a controlled rate.
- The Aluminum particles might need to be held in some sort of a matrix
- material, both to keep them in place, and to prevent the buildup of an
- Aluminum Oxide casing. I wonder what the effective Isp of Aluminum laced
- epoxy is?
-
- I seem to remember a somewhat similar design which pumps LOX into a tube of
- rubber? To stop the "engine", stop the flow of LOX.
-
- Obviously such a design would only be useful in a vacuum, and is probably
- no more reusable than an SRB.
-
- John Reynolds
-