4 ms·
Toroidal propellers turn your drones and boats into noiseless machines
- nailer 4y agoSaving you some time: skip the first video, go straight to the second.
- discordance 4y agoSecond video: https://youtu.be/b9a40Rs5CxE https://youtu.be/b9a40Rs5CxE
- mkl 4y agoRelated discussion from a couple of months ago: https://news.ycombinator.com/item?id=33949895 https://news.ycombinator.com/item?id=33949895 (156 comments).
- kibwen 4y agoThat was only for the boat prop design, this is the first I've seen of the infinity propellers for drones, which at least look extremely cool.
- jbay808 4y agoFrom that article: > 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?
- number6 4y agoI guess we will see them in Ukraine
- olliej 4y agoLow content article imo - much more a marketing piece (though at least isn’t trying to pretend it is not)
- rom-antics 4y agoThis video has a noise comparison for the drone propellers at 1:11 https://twitter.com/MITLL/status/1611438712683958306 https://twitter.com/MITLL/status/1611438712683958306
- Torkel 4y agoWow. Anyone making these for drones yet? This will be big.
- s1artibartfast 4y agoYou see any reporting on the loss of efficiency due to the different design?
- paulcole 4y agoAs 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?
- Waterluvian 4y agoMy 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.
- ge96 4y agoWonder if it helps with seaweed issues
- Gravityloss 4y agoA 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-blended-winglets/ https://www.aviationpartners.com/aircraft-winglets/types-ble...
- ricardobeat 4y agoSince their other winglet designs are on modern Boeing airplanes, there must be a reason for that.
- ballenf 4y agoCould they make these out of a stiff silicone? Seems more doable than with a traditional prop.
- JoeAltmaier 4y agoDidn't read much but look like they could foul pretty solidly.
- metadat 4y agoIs there anywhere you can buy these for a DJI mini 3 or Mavic Pro? I wonder if someone is already 3D printing this design in a compatible format.
- kmlben65 4y agocan 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)?
- amai 4y agoSee this discussion one day ago: https://news.ycombinator.com/item?id=34558670 https://news.ycombinator.com/item?id=34558670
- amai 4y agoHow do they compare to https://en.m.wikipedia.org/wiki/Rim-driven_thruster https://en.m.wikipedia.org/wiki/Rim-driven_thruster ?