If you get a round plastic trash can and bungee cord a square of thick rubber material to the top and cut a hole on the bottom the can about 8-9 inches in diameter it can blow harder when you punch the top. You can see smoke rings if you fill the trash can with fog from a machine through the hole in the bottom and then punch the top. Awesome.
I have an original Whamo-O Air Blaster, it's great! I used to have the cannon version, wish I still did! Spud gave it to me... right out of a production lot crate!
I bought one of these at Universal Studio's in Orlando, FL a few years ago. They work really good and are capable of projecting a ring of air quite some distance. Still have it and it works great.
it would have been a much more effective presentation to fire it across a room at say, vertical blinds or something. That would have better illustrated the concept of this. But hey, that's me . . .
@Lamboragon They are not complex concepts, they are simple concepts with complex math. Also the younger a person is the easier it is for them to learn concepts. Like teaching your baby to speak 13 languages, its almost impossible for and adult.
@gijsoerlemans1992 it's not that, further away the angle causes the vortex to cross the paper closer TO the paper and as you know these vortex generator can be felt a long way away. The closer she moved the generator to the paper the further the vortex was away from the paper. I think about the only way to test is to use smoke to actually be able to tell the point of contact and adjust accordingly.
I wonder if the results would be more dramatic if the opening of the vortex cannon were off the desk. Maybe try making it level with the surface instead of pointing downwards.
@derman077 I agree; shooting 1/2 vortex ring straight over the paper might give a better result. Which is then very similar to my curved vortex lift experiments (see my newer videos).
Lift is thrust really, lift is just a word for thrust pointing away from gravity. Anyway, in this case I'm talking about the force on the white paper, not about the blue vortex ring generator (toy). The vortex ring travels over the paper, and its lower pressure center causes thrust, is what I think is happening.
I'm not sure about the energy efficiency relative to say the coada effect for example, but I can imagine a vortex ring could generate more thrust for the same amount of power, because of the efficiency of a vortex (guessing again). How to test this... that ain't easy.
I suppose it is conceivable that the rolling stability of an air ring could somehow be applied to make a better coanda saucer. it would require more thought and perhaps simulation to be more than a guess though. maybe rings could be pulsed down on a cone..
the idea of the coanda saucer is to create a low pressure area on top of the disc thereby creating lift. that is achieved by running air out to the sides which sucks air down above. if a vertex could spread out on the surface instead it might work better. but probably not
Maybe. I know of the coanda effect. A ring vortex can have the tendency to stick to a solid surface, and maybe it can bring more air mass into the flow. But what I find more interesting, is the core of the vortex that has less pressure, which is what we want on top.
how do you know what youtube is?
TorcheredSole 2 weeks ago
Bernoulli at work
jakethewhale 2 weeks ago
Need a physics lesson?
dshackelford76 3 weeks ago
My Friend Suggested That We Blow Our Farts At Each Other With Those. We Did. It Was Awesome.
emersondavis 3 weeks ago
that's a funny looking kitchen
nick199009 3 weeks ago
Grandma! OMG your so embarrassing!!!
DarknessF1lms 1 month ago
uhhhhhhhhhh...... zzzzzzzzzzzzzzzzzzzz
Kimikoramirez 1 month ago
Ad smash your back doors in xx
ryanclarke65 1 month ago
are you high `?
Gigagonzales 2 months ago
WOW! Now I ask myself why I ever played video games. That's awsome! *Sarcasm off"
VoidTroopiez 2 months ago
you should be a physics student !
happyrancher 2 months ago
WTF
agutingiuntoli 2 months ago
Girl power LOL
infospot100 2 months ago
Why Is my librarian Using a Air gun? LOL
Hamradioismyhobby 2 months ago
Fill it with fog, I did that with mine, it was awesome.
Thesportyowl 2 months ago
HOW THE **** DID I COME HERE FROM PAINTBALL VIDS =P
borntobeawesome12 3 months ago
who does this?
JeffGordonFanForLife 3 months ago
you made tht for tht????????
LukeAndJema 3 months ago
I think this lady has finally observed the Kutta effect.
*Surprised.*
sudoLinux666 3 months ago
If you get a round plastic trash can and bungee cord a square of thick rubber material to the top and cut a hole on the bottom the can about 8-9 inches in diameter it can blow harder when you punch the top. You can see smoke rings if you fill the trash can with fog from a machine through the hole in the bottom and then punch the top. Awesome.
22Wish22 4 months ago
I have an original Whamo-O Air Blaster, it's great! I used to have the cannon version, wish I still did! Spud gave it to me... right out of a production lot crate!
doceigen 4 months ago
Nothing works like a good ol Whamo Airblaster.
ChilesGreen 4 months ago
who new
MrBriandenning 5 months ago
I bought one of these at Universal Studio's in Orlando, FL a few years ago. They work really good and are capable of projecting a ring of air quite some distance. Still have it and it works great.
it would have been a much more effective presentation to fire it across a room at say, vertical blinds or something. That would have better illustrated the concept of this. But hey, that's me . . .
thebakerman1 5 months ago
@Lamboragon They are not complex concepts, they are simple concepts with complex math. Also the younger a person is the easier it is for them to learn concepts. Like teaching your baby to speak 13 languages, its almost impossible for and adult.
astrialkil 7 months ago
coanda effect? its a freaking airzooka stop taking all the fun out of it
banditthetheif 7 months ago 2
where did you buy that air/gun? i had one but it broke and i wish i could get a new one... what is it called?
chanjongjung 7 months ago
@chanjongjung It's an airzooka, and totally fun to play with. And I don't get payed for saying that.
Trebseig 7 months ago
airzooka
kanerampage 3 months ago
@chanjongjung try going to think geek dot com!
JustCallmeLawson 2 months ago
@chanjongjung you can buy them at thinkgeek(.)com
bumblebee561 2 months ago
OMG! STOP HURTING THAT PAPER!!! STOP IT!!! :(
ramslak 9 months ago 37
@ramslak Never! We will continue until all the paper has left the Earth! Bwhahaha (mad professor laughing)
Trebseig 9 months ago 12
@Trebseig NOOOOOOOOOOOOOOOOOOOOOOOOOOOOoooooooooooooooooooooooo!!!!!
(falls on knees reaching for the sky, while a single tear slides down my paper-mache mask)
ramslak 9 months ago
um, placing it closer to the paper actually makes it seem LESS impressive...
gijsoerlemans1992 11 months ago 11
@gijsoerlemans1992 Indeed, it seems to do less at that closest distance -But I didn't measure forces.
Trebseig 9 months ago
@gijsoerlemans1992 it's not that, further away the angle causes the vortex to cross the paper closer TO the paper and as you know these vortex generator can be felt a long way away. The closer she moved the generator to the paper the further the vortex was away from the paper. I think about the only way to test is to use smoke to actually be able to tell the point of contact and adjust accordingly.
jacktheripped 4 months ago
I wonder if the results would be more dramatic if the opening of the vortex cannon were off the desk. Maybe try making it level with the surface instead of pointing downwards.
derman077 11 months ago
@derman077 I agree; shooting 1/2 vortex ring straight over the paper might give a better result. Which is then very similar to my curved vortex lift experiments (see my newer videos).
Trebseig 9 months ago
???????????
uhrmann42 11 months ago
You got this from COSI!!!!
smartsoldier132 1 year ago
That was rather anti-climactic...
percheron1654 1 year ago 24
Air guns. :)
DDRsensation 2 years ago
How do you mean thrust in this case?
smad333 2 years ago
@ smad333
Lift is thrust really, lift is just a word for thrust pointing away from gravity. Anyway, in this case I'm talking about the force on the white paper, not about the blue vortex ring generator (toy). The vortex ring travels over the paper, and its lower pressure center causes thrust, is what I think is happening.
Trebseig 2 years ago
are you sure a vortex creates more lift or are you just guessing?
DanFrederiksen 2 years ago
@ DanFrederiksen
I'm not sure about the energy efficiency relative to say the coada effect for example, but I can imagine a vortex ring could generate more thrust for the same amount of power, because of the efficiency of a vortex (guessing again). How to test this... that ain't easy.
Trebseig 2 years ago
I suppose it is conceivable that the rolling stability of an air ring could somehow be applied to make a better coanda saucer. it would require more thought and perhaps simulation to be more than a guess though. maybe rings could be pulsed down on a cone..
DanFrederiksen 2 years ago
What do you expect from pulsing vortex rings on a cone?
Trebseig 2 years ago
the idea of the coanda saucer is to create a low pressure area on top of the disc thereby creating lift. that is achieved by running air out to the sides which sucks air down above. if a vertex could spread out on the surface instead it might work better. but probably not
DanFrederiksen 2 years ago
Maybe. I know of the coanda effect. A ring vortex can have the tendency to stick to a solid surface, and maybe it can bring more air mass into the flow. But what I find more interesting, is the core of the vortex that has less pressure, which is what we want on top.
Trebseig 2 years ago
@DanFrederiksen Pretty much the same exact idea behind airplane wings too.
MrAwsome514 1 year ago