> Greg reasoned that if he could reduce or even eliminate these tip vortices, it should lead to a quieter, more efficient drone. His light bulb moment came on a dog walk when the idea of a tipless blade, that loops round to rejoin the propeller hub like a strip of twisted ribbon, first popped into his head.
> It took a further seven years of intensive research and development, substantial investment, 23 worldwide patents and a switch in focus from drones to boats before Sharrow Engineering unveiled its first production propeller
It seems that Sharrow was initially trying to tackle drones, but found boat props to be a lower-hanging fruit. This all makes me wonder who has priority on the patent -- MIT, or Sharrow?
As someone who grew up doing a lot of outdoor activity, I assumed part of the fun of owning a drone and/or motorboat was annoying the shit out of the people around you?
My family cottage is on a lake about 4km end to end. It’s the perfect size for some water skiing, tubing, swimming, fishing. But some maniac has one of those boats with four outboard engines lined up and zips across it in seconds. Insanely loud. Just awful.
A company called Aviation Partners developed and licensed winglets. They developed the spiroid winglet that is a loop at the end of the wing, claiming increased efficiency over plain winglets. No takers so far, first tested 30 years ago. https://www.aviationpartners.com/aircraft-winglets/types-ble...
can those be used in very high flow channel conditioner / ventilation or is usual wheel blowers more efficient?
or external unit of split ac system to pack more radiator surface in less space(i understand the higher power comsumpion of it)?
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[ 2.2 ms ] story [ 57.5 ms ] thread> Greg reasoned that if he could reduce or even eliminate these tip vortices, it should lead to a quieter, more efficient drone. His light bulb moment came on a dog walk when the idea of a tipless blade, that loops round to rejoin the propeller hub like a strip of twisted ribbon, first popped into his head.
> It took a further seven years of intensive research and development, substantial investment, 23 worldwide patents and a switch in focus from drones to boats before Sharrow Engineering unveiled its first production propeller
It seems that Sharrow was initially trying to tackle drones, but found boat props to be a lower-hanging fruit. This all makes me wonder who has priority on the patent -- MIT, or Sharrow?
https://twitter.com/MITLL/status/1611438712683958306
This will be big.
I wonder if someone is already 3D printing this design in a compatible format.