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Ducted fan blade design

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RonL

Well-Known Member
Joined
Jan 9, 2007
Messages
502
Location
Texas
I did a search in the forum and came up with so many threads, I'm not sure how to narrow the search.

My question is based on using a prop calculator, I have obtained power and speed results for some recent post that I have made.
The input info was for a 3000 pound all up weight @ 200 MPH, air temperature 40*F @ 5000 Feet,
Prop speed 6000 RPM, The result showed around 32" prop and a power needed of 159 KW.:ponder:

Are there any calculators that have multi-blade options for input ? Three or five blades in a duct is what my mind sees as quieter and more efficient. (and yes I have a few crazy thoughts around this question, I will ease the minds and refrain from commenting, unless some really are interested:grin:)

Any help please, and thanks in advance.

Ron
 
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