> > carlos noto wrote:

 > >
 > > Hello how is everyone in the group? This is a dome idea, I'm not sure if
 it
 > > works, but here I go! I'm putting a turbo charge 13b setup on my
 aerocanard,
 > > my question is, can we use a cruise propeller designed for 180 to 200 hp
 > > making over 200 MPH and over boost the engine with the turbocharger on
 take
 > > off and make it a clime propeller with the engine producing about 250 to
 270
 > > hp? sine we can dial the power on the turbocharger engine I thought that
 > > this may work. I'm about to order my propeller and I was looking for
 some
 > > comments on this issue. any comments will be gladly appreciated.
 > > thanks :)
 > >
 > > carlos noto
 > > aerocanard
 > > miami

 The basic approach has merit, but is not likely to provide quite as much
 gain
 as you envision. Wth a fixed pitch prop the take off is limited by the fact
 that the prop load is not letting your engine make full horsepower.
 Typically a 200hp engine (at speed) is bogged down to about 2/3 at
 static, to  about 120 hp. Now, if you can boost manifold pressure about
 50 percent, the torque and hp at that rpm will also go up about 50%
 to about 180, this will increase rpm (about cube root law)about
 14%, also bring hp up another roughly 14% to a bit over 200hp
 worth of take off power, Of course this is all predicated on your
 ability to really increase the boost that much, and you can handle
 the heat and stress loads. - Vance J

Nitrous oxide works for Ken Welter :-)
That rotary powered Coot leaps out of the water.

Paul Lamar

   Yes the nitrous works and the turbo should do the same thing, with
70 hp nitrous jets it will bump the tac up 1000 rpm so I am not only
gaining the 70 hp from the nitrous but what ever the extra 1000 rpm
is giving.
  Also on the twin pack I would set the pitch for cruise with the
single rotary engine and the Rotax engine would bump the tac up
another 1200 rpm for takeoff and climb out so I would think the turbo
sould do the same thing.
  Ken

 
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