New suction-cup system spins water to stick to rough surfaces
1–10 of 35 posts
Re: New suction-cup system spins water to stick to rough surfaces
#2No idea if this is actually a new idea but it's definitely new to me and I love seeing it. What a cool concept, likely to be a few applications in industry beyond spiderbots.
Re: New suction-cup system spins water to stick to rough surfaces
#3Is this the same mechanism as the immersion blender trick? (https://youtu.be/TrZyuCh9df0?t=424)
Re: New suction-cup system spins water to stick to rough surfaces
#4Pretty cool. Reminded me of what this guy is doing, he calls it "orthosonic lift": https://youtu.be/kG6vXGidQbo
Some more info: http://sciencechatforum.com/viewtopic.php?nomobile=1&f=77&t=...
I believe he has a couple of patents on the technology, but not sure he'll ever get around to making something practical with it.
Re: New suction-cup system spins water to stick to rough surfaces
#5Is this the same mechanism as the immersion blender trick? ( https://youtu.be/TrZyuCh9df0?t=424 )
No, I believe the immersion blender trick can be explained by https://en.wikipedia.org/wiki/Bernoulli%27s_principle
Whereas the suction cups in the article, use spinning water as a way to seal suction cups on rough surfaces (the water fills in crevices of rough surfaces I presume, allowing the suction cup to seal). The water is also spinning (i.e. it has an inertial force) so that it counteracts the vacuum pressure in the center of the suction cup.
Re: New suction-cup system spins water to stick to rough surfaces
#6actual paper https://aip.scitation.org/doi/10.1063/1.5129958
video 1 (response measurement): https://aip.scitation.org/doi/suppl/10.1063/1.5129958/suppl_...
video 2 (picking up block): https://aip.scitation.org/doi/suppl/10.1063/1.5129958/suppl_...
video 3 (hexapod): https://aip.scitation.org/doi/suppl/10.1063/1.5129958/suppl_...
video 4 (human climbing tiled wall): https://aip.scitation.org/doi/suppl/10.1063/1.5129958/suppl_...
video 5 (human climbing concrete wall): https://aip.scitation.org/doi/suppl/10.1063/1.5129958/suppl_...
Re: New suction-cup system spins water to stick to rough surfaces
#7Kind of similar to the reason you'd wet a suction cup before using it: the water helps plug any small air gaps. But in this version, a fan spins the water and air inside the cup, with the heavier water being forced to the edge, and any water leakage being replaced from a reservoir.
Re: New suction-cup system spins water to stick to rough surfaces
#8actual paper https://aip.scitation.org/doi/10.1063/1.5129958 video 1 (response measurement): https://aip.scitation.org/doi/suppl/10.1063/1.5129958/suppl_... video 2 (picking up block): https://aip.scitation.org/doi/suppl/10.1063/1.5129958/suppl_... video 3 (hexapod): https://aip.scitation.org/doi/suppl/10.1063/1.5129958/suppl_... video 4 (human climbing tiled wall): https://aip.scitation.org/doi/suppl/10.1063/1.51299…
The videos are great, consumes a lot less water than I imagined. Seems like most of the water is lost during the de-suction process, if they can scavenge that it could really cut the water consumption down nearly to zero.
Re: New suction-cup system spins water to stick to rough surfaces
#9China is where all the cool stuff is happening. Whereas americunts are busy worrying about which toilet should be used by whom and whether illegal aliens deserve free health care or not and how to kill some guy half way around the world because he said bad things
Re: New suction-cup system spins water to stick to rough surfaces
#10actual paper https://aip.scitation.org/doi/10.1063/1.5129958 video 1 (response measurement): https://aip.scitation.org/doi/suppl/10.1063/1.5129958/suppl_... video 2 (picking up block): https://aip.scitation.org/doi/suppl/10.1063/1.5129958/suppl_... video 3 (hexapod): https://aip.scitation.org/doi/suppl/10.1063/1.5129958/suppl_... video 4 (human climbing tiled wall): https://aip.scitation.org/doi/suppl/10.1063/1.51299…
The videos are great, consumes a lot less water than I imagined. Seems like most of the water is lost during the de-suction process, if they can scavenge that it could really cut the water consumption down nearly to zero.
If they have an additional ring around the outside of each cup, could they not suction the water back into the system?
Also, wouldnt this be easily defeatable with small dowel protruding "thorns" - or dimples, as on a golf ball - maybe alternating convex/concave dimple patterns? or other ridges?