http://www.ivorcatt.co.uk/2606.htm
http://www.ivorcatt.co.uk/x64h.htm
http://web.mit.edu/16.00/www/aec/flight.html 16 April 2016
The pressure variations of flowing air is best represented by Bernoulli's equation. .... ....
In order for an aircraft to rise into the air, a force must be created that equals or exceeds the force of gravity. This force is called lift. In heavier-than-air craft, lift is created by the flow of air over an airfoil. The shape of an airfoil causes air to flow faster on top than on bottom. The fast flowing air decreases the surrounding air pressure. Because the air pressure is greater below the airfoil than above, a resulting lift force is created. To further understand how an airfoil creates lift, it is necessary to use two important equations of physical science. [Bernouilli, not F=d/dt(mv)]
Crazy. The air does not flow over the wing, except in a wind tunnel. When an aircraft flies though air, the air is stationary.
The air does move up and down, of course. Nobody, either the Bernouilli or the Newton people, have taken proper account of this.
The air does not have horizontal momentum except in a wind tunnel.
This means wind tunnel results are bogus. Ivor Catt. 16 April 2017
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‘If you
have got anything new … you need not expect anything but hindrance from the old
practitioner even though he sat at the feet of Faraday. Beetles could do that … . But when the new views have become fashionably current,
he may find it worth his while to adopt them, though, perhaps in a somewhat
sneaking manner, not unmixed with bluster, and make believe he knew all about
it when he was a little boy!’ – Oliver Heaviside, 10 March 1893.
Preece had just stated in his 1893 IEE Presidential address: ‘I took the opportunity to formulate
the theoretical views of electricity that I had acquired at the feet of
Faraday.’
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https://en.wikipedia.org/wiki/Lift_(force)
An airfoil is
a streamlined shape that is capable of generating significantly more lift than
drag.[5] A flat plate can generate lift, but not as
much as a streamlined airfoil, and with somewhat higher drag.
There
are several ways to explain how an airfoil generates lift. Some are more
complicated or more mathematically rigorous than others; some have been shown
to be incorrect.[6][7][8][9][10] For example, there are explanations based
directly on Newton’s laws of
motion and
explanations based on Bernoulli’s principle.
Either can be used to explain lift. .... ....
As
described above, there are two main popular explanations of lift, one based on
downward deflection of the flow combined with Newton's laws, and one based on
changes in flow speed combined with Bernoulli's principle. Either of these, by
itself, correctly identifies some aspects of the lifting flow but leaves other
important aspects of the phenomenon unexplained. A more comprehensive
explanation involves both downward deflection and changes in flow speed, and
requires looking at the flow in more detail.[58]
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http://www.aviation-history.com/theory/lift.htm