Flingwing207,
This invention consists of two functions, which interface with each other.
The first function is a hub spring. A definition can be seen
here. The heading of the definition is a link to a full page on the subject. This full page has excerpts by Nick and Lu from a thread on PPRuNe a couple of years ago.
The second function is the constant velocity joint. This is where 'the going gets tough and the tough get going'. Probably going to another thread. This rotor must be thought of as a teetering rotor; a rotor without individual flapping and lead/lag hinges on each blade.
On a 2-blade teetering rotor, when the tip-path-plane is not aligned with the mast-plane the rotor-mast assembly will experience a cyclical Coriolis effect and a Hooke's joint effect. The mathematics for the cyclical Coriolis and for the Hooke's joint are different, but they both come to the same answer. If the Hooke's joint is then replaced by a Constant Velocity Joint, the Hooke's joint effect and the Coriolis effect will both disappear.
Test question: Since Captain Hooke and Mistress Coriolis are one and the same, does this make them/it a transvestite?
If the rotor hub and its blades are tipped 10-degrees, there is no Coriolis effect. This is because the constant velocity joint causes the rotor hub to think that the mast has tilted 10-degrees as well.
To put it in different words; by putting a constant velocity joint between the rotorhead and the mast, the mast doesn't know if the rotorhead is tilted or not, and the rotorhead doesn't know if the mast is tilted or not. For all intent and purpose, the helicopter could be hovering and a hovering helicopter does not experience Coriolis effect.
The nut and bolt stuff is on.
OTHER: Mechanical - Joint
Hope this is clear.
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Ascend Charlie,
"How about some droop stops?"
Hopefully, droop stops will not be required. The blades do not independently flap. The whole three (or more) blade rotor 'teeters' as a unit. The function of the hub springs is to resist this teetering on the ground and to put a moment on the mast when the disk teeters during flight.
Dave J