3 or more rotor blades ???

Mayfield

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Oct 30, 2003
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Avondale, Arizona
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Hatz Classic Bi-plane
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Fusion Copter is about to learn the hard way that criss-crossed see-saw rotors don’t work. Cracked hubs/blade roots.
Hi Chuck,

Is it predictable where the cracks will begin in the hub/blade root?

Surely Fusion is attaching strain gauges of some type to at least understand the magnitude of the bending loads.
 
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j4flyer

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Joined
Apr 7, 2004
Messages
250
Location
Woodland, Ca
Chuck do you have and would you post a couple of photos of the rotorhead ? I’m impressed, I would like to see what it looks like. I’m not thinking of building one, it’s just something I find very interesting.
 

C. Beaty

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Apr 16, 2004
Messages
10,006
Location
Florida
Hi Chuck,

Is it predictable where the cracks will begin in the hub/blade root?

Surely Fusion is attaching strain gauges of some type to at least understand the magnitude of the bending loads.
The cracks generally start in the attachment region; blade to hub.
Part of the problem results from the stresses being internal to the paired rotors and not producing external vibrations.
 

C. Beaty

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Apr 16, 2004
Messages
10,006
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Florida
Chuck do you have and would you post a couple of photos of the rotorhead ? I’m impressed, I would like to see what it looks like. I’m not thinking of building one, it’s just something I find very interesting.
there's a picture at the end of the film clip in my post #49
 

j4flyer

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Joined
Apr 7, 2004
Messages
250
Location
Woodland, Ca
I thought the video ended. Must have been buffering , sorry. Not really, I get to watch it again haha

Ok I watched it all. The rotorhead detail at the end was exactly what I hoped to see. I found it a fascinating piece of machine work. It appeared to work very well. If I may be so bold to ask, why aren’t we seeing more Beaty three blade heads and systems out there ? Your product looks to be light years ahead of present designs. I hope to see you flying it again. I can’t believe something that special is tucked away.
 
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