Aeronaut's Comments
I don't think this is a demonstration of lift/drag/thrust. I haven't had a chance to get the fans out of the attic to try this yet but I think they created a vortex around the plane. The fan is blowing a toroid, so there's actually a stable high pressure (low velocity) zone in the middle. Sometimes in department stores you'll see a fan pointed upwards with a beach ball floating in the low velocity region. For the more powerful fans they point the fan off the vertical. I think the clever thing here is the video used two horizontal fans and figured out how to create a stable zone in the middle with enough updraft to keep the plane aloft. That would explain why the fans don't point directly at each other. Or could be faked. I have to try it out.
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I believe this is an old medical device used to bleed a patient. I forget if it was just used to bleed a boil or if it was used to create cuts to attach leaches. I think I remember seeing this in Williamsburg, VA.
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Sounds pretty cool. Thanks.
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At NYU, after years of the Violet as a nickname, someone dressed up as a Violet. The school then adopted the Bobcat