Thanks ghurd. I've been having trouble trying to visualize the aerodynamics of the blade, now I have more to think about. I can't quite get my head wrapped around the relative wind hitting the airfoil on the bottom (very high AoA) then the transition to rotational motion with a frontal relative wind. Sometimes I think I have a grasp of it then it slips away. It's the transition that gets me. It'll click eventually. At least now I know what people are talking about.
jlt: I saw that on the "other" site. Seems like a pretty good trick. Any drawbacks to cutting the groove? I don't have any welding equipment though I can silver solder using propane, and I have a broken band saw blade laying around that I was going to repair, though that's a very high carbon content. I think I've read of problems with high carbon steel laminates.
You know a plane must be moving forward (relative to the air) to lift off, right?
Lets say it takes 50mph to create enough lift to lift/take off.
If the plane is on an aircraft carrier moving 25MPH, then only need 25MPH more speed?
But if the plane has 55MPH wind straight up from the bottom, then it is a different story.
It is not the transition, it is the AoA.
Yes, I know I didn't explain it worth a hoot.
"paper clip video"
Lets see if I understand what you are saying...
Without the claw, the flux is NOT shorted (can't argue with that).
And the paper clip hangs.
WITH the claw, you can no longer hange the paper clip.
Looks like WITH the claw has less flux in the disk, and the only place that flux has to go around is through the claw.
Since it only has a path through the claw to go around (in the video), then the flux
IS shorted through the claw.
Since it
IS shorted through the 'claw', then there is less flux in the coil
Since there IS less flux in the coil, then there IS less voltage, and less power.
The claws are helping to direct the magnatism to a shorted condition, which makes no power.
It is not going through the back side of the plate, it is simply wasted in the "claws".
If the paper clip sticks, then the disks are not thick enough.
Making the magents less effective (shorting their flux) so a paper clip will not stick is like cutting the legs off a sprinter so he will not run as fast. Sure, he will not run as fast, but that doesn't make him more efficient.
I had a guy tell me his solar panel was not working as well as it should. The problem, as he explained it, was the wire was too fat. It took too much power to push electric through that fat wire, and skinney wire was easier to push power through, he said, because the power didn't need pushed through so many pounds of wire.
His explaination made sense to him. It was totally incorrect, but it made sense to him.
He did not understand what he was doing.