Wind turbine Project

googlehead

Hi Guys,
I have a project to hand in before xmas. Basically I have to design a
connector for a Wind turbine Blade. ie the Blade root, the one that connects to the hub. for this I have to come up with original ideas, so I cannot use another current of previous blade root connector. I have to come up with a few designs and work from their.

so far I have the light bulb connector.( the one with the threads), but I don't want to use this as it some others are using it already.Here are a few things that I am trying to take into account with each design

Interaction with other parts
Tightness(play)
Cohesion
Slippage
Dry Friction
Shear
Cost

Any inputs is really appreciated, even if you think it is silly! I am trying to
brainstorm. so every little helps

thanks you.

bnt

One thing that jumps out, to me, is that the angle of attachment is critical, since it affects the performance of the blade. Assuming three blades, all three have to be accurate (the right angle) and precise (the same for all three), otherwise the turbine will not perform. correctly. That rules out any kind of screw-in connection, IMHO - how do you ensure the correct alignment?

Running with the "light bulb" idea, what about a bayonet connection? Push, twist & lock.