Mark wrote:

 Mike wrote:
 What if you used the energy of the exhaust to run a turbine wheel
 in the manner of a jet engine and used the power generated to run a fan

(in the manner of a turbo

 fan engine.)  That would maybe not only create a higher density

atmosphere for combustion (bleed

 air form of turbo charging.)  Blow the rest of this air over all the

radiators (oil and coolant)

 and collect their heat energy.  Then in a concentric tube with the

exhaust, duct it out the back

 directly as thrust and skip the mechanical connection to the engine all

together?  Might be

 simpler and easier.  One of the draw backs I can think of would be

fitting it in some where.  Just

 remember, if you think it has some merit, you heard it here first!  :-)

Thanks for the wonderful

 discussions and forum.  I am also glad to see someone else as interested

in turbo compounding as

 me.  Maybe these two attachments will give you some ideas as well.  The

pictures are courtesy of

 Torque Meter
 Mike Lilja

Mark wrote:
If you want pressure for suppercharging the inlet, then you will also have
heated the air making it useless for cooling radiators. If you just want to
move a large mass of air for cooling (the turbo fan idea) then you need to
gear the turbine down to drive the fan.
If you are going for a gearbox, make Paul's day and feed the HP directly
back into the e shaft.
Mark Wrathall.

 "Michael D. Lilja" wrote:

Ah, more considerations.  I am not one for supercharging.  I like the idea of turbo normalizing
better.  It keeps the air temperature down and the rated power intact.   Not to mention the
possible problems of detonation.  It may be possible to use some of Bernouli's physics to use the
faster incoming air and convert it to higher pressure air via changes in duct size diameters.
 Dick Gregory has suggested using an air transvector air amplifier to change high pressure air
into high volume air.  Maybe there is something to consider there.  I need to learn more about
those items now.  Now that that idea is about, some mental design iterations are necessary.
 Maybe, there is something to be said for some of each, a geared down fan connected via a gear box
to the engine. :-)  My intial thoughts on the subject came about from my original idea of using a
V-8 engine with its layout.  See Pauls and my pictures of the Napier Nomad motor.  It may not be
pratical for the rotary layout.  But with all the enegery going out the tail pipe it seems quite a
shame to not find a way to capture it.  There is also a lot of energy being given up by the
cooling system and I wanted to try and capture that as well.  I hope more ideas are forthcoming as
this group is great at sharing them.

Mike Lilja

Pass the cooling fluid into an exhaust heat exchanger and then through
a steam turbine. Condense, cool and recycle.

Paul Lamar

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