X-Mozilla-Keys:                                                                                 

Richard Ramsey 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

It is always a bad idea to push an airplane beyond what the designer
says is the VNE. You risk control system flutter for one thing.
Flutter is quickly followed by structural failure of some sort.

Paul Lamar

John Slade wrote:

Richard,
I'm building a Cozy MkIV. I'm finishing off the wings after less than 9
months of building. Details of progress at http://kgarden.com/cozy . I'm
seriously considering a rotory to power it. Last night I attended a
presentation by Tracy Cook in Ft Lauderdale which only served to make the
idea even more interesting. I expect a Mazda 13B will more than adequately
replace the 0-360 Lycosauraus, but I'm not expecting more than 200kt from
it. As for 250 - 300kt - I agree with Paul, but this IS the experimental
catagory. If you want to try for 300kt (maybe with a 3 rotor), go ahead.
Please let me know how it works out :).
Regards,
John Slade Cozy MKIV #757

 
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