Has "levitation" been used in the past to create flying machines?

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Offline erickejah

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Is it true that levitation was used in the mid-40's to create flying machines by the Germans? 


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« Last Edit: 22/01/2009 09:01:46 by chris »

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Offline MonikaS

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--------
I tried installing Jesus on my Scientific Method and I got a Blue Screen of Eternal Damnation.

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Offline DoctorBeaver

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No.

Succinct and 100% accurate reply
Fledgling science site at http://www.sciencefile.org/SF/content/view/54/98/ needs members and original articles. If you can help, please join.

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Offline Chemistry4me

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I have no idea what you are getting at erickejah [???] [???].
Maybe you should watch a bit less TV [:)][::)]

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Offline Karsten

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Probably not.
I got annoyed with looking
at my own signature

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Offline Karsten

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And look below - an ad for Levitation Secrets!
I got annoyed with looking
at my own signature

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Offline erickejah

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 [:o]Ok Thanks; I agree that I need to stop watching History channel. [:D] [:D]

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Offline Chemistry4me

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Yes indeedy! [;)]

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Offline erickejah

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Anyways, how does the concept of levitation develops [???]

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lyner

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It's a magical idea with great appeal. If you ignore the fact that it would involve a brand new force to be discovered, it's a great idea.

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Offline erickejah

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brand new force to be discovered
I guess is our work to discover it now  [8D].

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Offline Chemistry4me

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Yeah, whatever...

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Offline Don_1

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This is a very up-lifting thread.
If brains were made of dynamite, I wouldn't have enough to blow my nose.

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Offline LeeE

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I believe that there have been a few attempts at making non-direct thrust air vehicles, which by virtue of the aerodynamic principle used, makes the craft look like flying saucers, and which would also seem to levitate as they do not use direct-thrust to fly.

Lift, in an aircraft wing, is generated by airflow over the top of the wing, which in turn creates a low pressure region above the wing.  The relatively greater air pressure below the wing then tries to equalise the pressure by moving towards the low pressure region and in doing so carries the wing with it.  In conventional aircraft the airflow over the wing is created by moving the wing through the air, hence the need for runways to take off and land, but the scheme used in the non-direct thrust aircraft is to move the air over the lifting surface instead.

These designs of vehicle have no wings and instead the craft generally resembles the upper half of a flattened sphere, with a raised central hub, post, or pillar on, or in which the engines are mounted.  Air is then drawn from above the craft and blown across the upper surface of the craft to create the low pressure region.  Thrust and directional control is achieved by differential airflow.

Afaik, no one has yet managed to make a successful craft using this principle however, even though the idea seems to be sound.  The greatest problem, iirc, is maintaining a laminar flow across a large enough proportion of the lifting surface to generate sufficient lift.

I'm sure these things have a proper name but I can't remember it atm.
...And its claws are as big as cups, and for some reason it's got a tremendous fear of stamps! And Mrs Doyle was telling me it's got magnets on its tail, so if you're made out of metal it can attach itself to you! And instead of a mouth it's got four arses!

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Offline erickejah

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wow, tx for that LeeE, is like my 1st class of aerodynamics. btw ur form of explaining theories is very good. [:D]