> > All problems are not show stoppers. Adopt a positive attitude.
> > Almost every idea that passes the physics test will work but
> > there may be a few problems to solve.
> >
> > One can always cool the rotary exhaust by 100 or 200 degrees F with
> > a heat exchanger and make steam. Then use the steam to drive
> > the accessories with a tiny steam engine like BMW is working on.
> >
> > Even simpler... re-injected the steam into the turbine as is commonly
> > done in power plants to cool the turbine and add to the kinetic
> > energy.
> >
> > You still have twice as much kinetic energy in the rotary
> > engine exhaust to drive the turbine than any piston engine has.
> >
> > Paul Lamar ...No rotor no motor.
>
> Paul,
> What about the six stroke, which injects water every other event.
> Apparently it doesn't take much water because of the very high
> expansion rate ( 600% if I remember correctly). The water to
> steam event also cools the engine i.e. no radiator.
> George (down under)
>
> No doubt it works.
> How are you going to deal with the rust and corrosion?
> As I understand it it takes distilled water. How much
> fuel do you need to distill water? In the US bottled water
> is more expensive than fuel at four dollars a gallon.
>
> What is the matter with proven 50 year old turbo compound
> technology? Thousands of turbo compound engines were
> built and flown.
>
> Paul Lamar ...No rotor no motor.

Paul,
Not knocking the turbo compound concept.
I wonder how soluble oil in the water would burn - must test that one.
I have no answer to distilled water costs and I guess it's dearer than

fuel

at the moment - but what about later!
We are at $1.43 a Litre here locally ( 3.6 L to the US gallon) and we are
.77 cents in the US dollar = $3.96 a US gallon.
I'm sure we have gone past the point where alternative fuels ( like
hydrogen) aren't cost effective to manufacture.
George (down under)

If you want cheap distilled water, you could use rain water. I was stewing
on water injection after I talked to a WW2 aviation mechanic who told me a
lot of the old warbirds had this feature to help w/ cooling. Freezing would
be a problem at colder temps.Also, what happens when you run out on a X
country flight?  If you use non-distilled, you'd have to worry about
mineralization.Not sure if corrosion would be a problem or not. Wouldn't the
02 you need for oxidation be used up in combustion? Since they designed this
into the engine, I guess they assumed the benefits outweighed the drawbacks.
I have never seen any data about the thermodynamic or steam engine effect
(isn't it more than 600%?).
Worth thinking about anyways.
Andy in CO


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