I'm sure it has a marginal effect, the drag would have to reduce average velocity somewhat, but maybe it is negligible. Or maybe the overall drag is equal to an unmodified tip due to other changes such as reduced restriction.

Because that isn't how it works. I've been working on this idea in my spare time for a patent, for months. I have the CFD models to prove it. I learned ELMER and perfected the solvers and meshing process.

It grinds my gears that they stumbled upon it, get all the credit, and apparently don't know how it actually works.

Never been scooped before. But man it doesn't feel good.