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Joa Harrison wrote:
Thanks for the links. I checked them out and didn't find quite what I'm after though. I'm more interested in typical prop forces in flight and what the standards for design are. Not so much for static design but more for determining fatigue limits. I assume there's some practical standards out there that are used for certified prop manufacturers.
Joa
I've got some information at home, but it basically boils down to design a propeller that can withstand the centrifugal forces, and the lateral forces will take care of themselves. The theoretcal maximum thrust from a propeller is somewhere in the range of 4lbs/Hp. With a tuned rotary that will be something on the order of 600-800lbs. Centrifugal forces range in the order of tens of tons.
Other than that, you can use the station forces that Betpat will give you in a classic cantilever arm analysis. Verify that the prop material you're looking at will give you a sufficient safety factor (I believe 4 is used for props?), and you're on your way.
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