X-Mozilla-Keys:                                                                                 
Al Gietzen wrote:

Howdy,

    I seriously thinking of building a Cozy Mark IV, and of course
powered by a rotory. The plans are for a 200 kt plane with a Lycoming
O-360 180 hp engine. Is it feasible to push this plane 250 - 300 kts
reliably with a rotory?

    Any comments would be appreciated.

Thanks,
Lurker Richard

Lets not forget that the speed of an aircraft will increase by pretty close
to the cube root of the ratio of horsepower.  I don't know the performance
numbers on a Cozy, but probably 180 kts with 180 hp is not too optimistic.
To get it going 250kts will take about 500 hp, and 300 kts, just over 800
hp.  To go those speeds you have to seriously reduce drag, use different
airfoils, or fly really high with turbocharged engine.

Al Gietzen

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