Flying baby dolls.... the Coanda effect in action

Flying balls were fun until I discovered there were all sorts of other objects that can be levitated in a stream of air that are much more interesting and challenging. To begin I followed a few simple rules: 1. objects cannot be supported by strings, 2. touch other surfaces, 3. objects must be able to be supported in airstream for at least 15 seconds. In this video, shop vacs or an air compressor provides the air stream to fly these babies. In previous videos I have flying carrots, cucumbers, spoons, footballs, pigs, to name a few. In a future I hope to post additional interesting household objects that I never expected would work.

this video is a reposting of a previous video that included copyrighted music. It has been removed from this version

[guyguy]

“The air flow follows the curve of the baby’s head” is a hilarious sentence

[ncot_tech]

So if it's the general curved shape of the head that makes this work, how strong would the air stream need to be for this to work on a real baby?

Hypothetically speaking, for science research purposes only, of course.

[SievertSchreiber]

Thank you mr. Yeany for another great science lesson!

[MeppyMan]

Hmm. I’m bald, I just need a powerful enough compressor, and hope it doesn’t scalp me 😂

[BBG]

Excellent, I knew nothing of the Coandă effect until I was building the Hughes NOTAR helicopter back in the 1980s. Wish all teachers taught like you, keep up the great work.

[projekt_official]

Everytime you post a video about this, it blows my mind that it works. Thanks for sharing, Bruce!

[hunterboat]

Thank you Bruce. Master Class as always

[hptfalcon]

Imagine a demonic doll hovering as a Halloween prop. Now that would be cool!

[JuergenW.]

What a brilliant experiment. Thanks for the video.

[Isaac-]

Will you put on neck brace and helmet and try this on yourself? If too heavy get bigger helmet.

[crazykittenvideos]

My kids are too heavy now, I’d need a real high pressure air line! 😂

[lightdark]

Can you upgrade the air supply and get a real baby to float?

[notsurt]

Anyone got a real baby to lend the man?

[colleenforrest]

Could a vehicle be made that can generate a coanda effect large enough to hold itself in the air?

[joopi]

I trying to do that experiment at home to show it to my children, but i don't get a Baby Doll to a float. What pressuere did you use and what size of jet?

[DanFrederiksen]

it's so strange that it's stable.

[icebluscorpion]

Hey Bruce, could you show this phenomenon with an accurate human body like a Action figure where the proportion are right/accurate? A Barbie Doll is not accurate enough with that large Hydrocephalus head 😂

[MushookieMan]

That's 'cursed' as the kids say