I meant to add the obvious alternative to: > If you redesign it for Cryo-air, and only expand CA through > the engine itself... then that is not enough, as you will > need enormous fuel tanks, and a larger engine... BUT if you > add a turbine to the exhaust (turbo-generator, not turbo > compressor) and inject some gasoline ahead of this into the > oxygen rich exhaust, then this "staged combustion" which > Richard is talking about has added double synergy, in that > you now have much more heat to recycle for the initial > expansion.
The alternative is to this is to use a smaller standard engine, or the same engine running even leaner, but with a turbo-generator attached - and inject the CA into the exhaust ahead of the generator. This gives the full 800-1 expansion ratio. You can even use the CA to cool the engine (and provide air conditioning, of course).... Let's hear a cheer for "100 MPG by 2006" Jones
