Perry Mick wrote:

I read that in the Hollman book long ago, about ducted fans
starting to be draggy at 60mph.  That still doesn't mean they
won't work, just that they're not as efficient.  That's what
I've been trying to say all along.  I'm trading off speed for
simplicity, or reliability.  Engineering is always tradeoffs.

I just hope it's not too much speed (lost)!

--
Perry J. Mick
Mick Duckt N7XR
http://www.mickaircraft.com/duckt.htm

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