how does having a wing shaped like this lead to a pressure differential? it's not like air can be compressed on one side or move faster on one side just because of the shape causing displacement, right?
>>16554666>I can’t open an intro book on fluid dynamics and do my own calculations
Every shape creates a pressure differential. It's just about finding the shape that minimizes drag in the same orientation that maximizes the pressure differential.
>>16554669what's a good intro book to fluid dynamics?
>homework thread
one side exchanges more photons than the other and that differential causes an anti-gravity effect.
>>16554666>expecting a rational explanationit’s alien technology. our reverse engineers can only guess at the different configurations.
>>16554666By creating low pressure zone on the top to throw air downward
>>16554673>. It's just about finding the shape that minimizes drag in the same orientation that maximizes the pressure differential.I feel like theres more to this than maximizing the L/D ratio. Airplanes use many profiles, not just the one with the highest L/D. What else matters, stability at many speeds, air density and attack angles?
>>16554739Dunno. I never studied fluid dynamics.
>>16554674An Introduction to Fluid Dynamics
>>16554666It ahs nothing to do with the pressure difference between the top and bottom. The wing angle and control surfaces are just set make the air go under the wing.Take a look at ship propellers and ask yourself why the blades don't have a weird asymmetrical cross section
>>16554669>fluid dynamicsEverything you know about reality is wrong-warm summer evening in ancient Greece.https://youtu.be/QKCK4lJLQHU
>>16554972...as...I review this video again he refers to it as fluid, because he is wrong, as its clearly labeled aero dynamics, as fuilds are maximally dense, while aeros are dynamically dense.Idiots, everywhere everyone is in all ways wrong about everything, always. Fuck this planet.
>>16554669No idea about the current situation but when I was a kid, pretty much every general science museum had a display with various airfoils in it where you pressed a button and it pushed lightly dyed water through the chamber so you could see the currents created.
I felt firsthand how wings work in the air by dragging my hands in water as a kid, you can literally create small bubbles underwater behind your hand if you move fast enough.
>lead to a pressure differentialone side has a different length. i wonder retard. you can just google it retard.
>bottom flat>top has a hole in iti wonder how it leads to a pressure differential retard
>>16555049keep wondering, genius
>>16555035>you can literally create small bubbles underwater behind your hand if you move fast enough.Did you move your hand at 100 m/s?
>>16554762>air deflected down>wing (and airplane) go upits that simple
>>16554666"Pressure" is an absurd idea. If there is such a things as a movement from "high pressure" to "low pressure" (God only knows how even this much is supposed to happen), then why has the state of total pressure resolution, i.e. total "low pressure", not been achieved?
Pressure is mathematical garbage just as energy or temperature.The true reason is that there is a momentum exchange between air molecules and the wing
>>16555135>"Pressure" is an absurd ideaIt's the average normal force on a fluid element. That's not absurd.
>>16555119Have you never been in a swimming pool?
>>16555213Yes, and there wasn't any cavitation or boiling
>>16555218try going faster next time
>>16555235I routinely swim 15 m/s because I'm white
>>16555245a little more effort and you may begin to experience some flow separation
>>16554666∆p=1/2d(∆v)2
>>16554731https://m.youtube.com/watch?v=QKCK4lJLQHU&pp=ygUXQm9laW5nIGVuZ2luZWVyIGxlY3R1cmU%3D
>>16554666By being moved forward through the air with some angle of attack.
>>16554976If you assume incompressibility they are literally identical. And incompressibility is a safe assumption up to Mach 0.3, or even Mach 0.7 for some applications.
