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Message
One definition of the difference between "shrouded propellor" and "ducted
fan", is the ducted fan has a duct longer than the fan diameter. My shroud was
only 24" long while the fan was 38" in diameter. For your gyro application, I
would think it would still be a shrouded propellor, as I doubt you have room for
a long duct.
Hi
Perry,
Good to hear
from you. I'm sure I'll have lots of questions if I get to the point of
trying this, but for now I'm mostly curious about the weight comparison between
fan and prop. When you changed from fan to PSRU/prop, did the plane end up
heavier?
The stock
single rotor configuration is already plagued by excess weight, so one
of my hopes was that this would reduce it some. At least the fan unit
would be a bit smaller than what you were using, so a bit lighter too. You
are also correct that I wouldn't have room for for a long enough duct to be a
"ducted fan".
Thanks,
Rusty (must
forget this long enough to finish the RV-8)
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