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Old Aug 09, 2007, 12:38 AM
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Quote:
Originally Posted by canard addict
Would internal mounting be a problem and also if we had a large opening in the nose,how would the rush of air do in one of my square cross sectional fuselages with battery, switch and ESC mounted inside?
What I have read is that the inlet area should ideally be around 90% of the x-section area at the fan. The same source also suggest the exit point should also be around 90% of the x-section area at the fan except fast models can apparently benefit from smaller exit area such as 80 - 90%. I also read that clean flow around the inlet area and ducts is needed for good efficiency, since too much turbulence will affect the fan performance and can produce more noise, similar to what can happen with pusher props. Again, I don't have first hand experience, so hopefully others can contribute their experiences.

Quote:
Originally Posted by canard addict
I picture a glider such as the Gentle Lady made into a canard with a Canardly type rudder mounted on a hardwood flat piece extending from the fuselage top. It would be for sport flying since it probably could not climb at a fast rate. Charles
To be honest, I'd keep the EDF for faster models, since I think for a glider you'd get more useful thrust and better efficiency with one or two motors stuck on pods. Twins motors and folding props on wing mounted nacelles is another possibility. Its just a pity that twin brushless motors will need two ESCs.
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