Anonymous at Sat, 18 Jan 2025 02:28:26 UTC No. 16554669

>>16554666
>I can’t open an intro book on fluid dynamics and do my own calculations

Anonymous at Sat, 18 Jan 2025 02:31:38 UTC No. 16554673

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.

Anonymous at Sat, 18 Jan 2025 02:35:00 UTC No. 16554674

>>16554669
what's a good intro book to fluid dynamics?

Anonymous at Sat, 18 Jan 2025 03:05:59 UTC No. 16554702

>homework thread

Anonymous at Sat, 18 Jan 2025 03:06:05 UTC No. 16554703

one side exchanges more photons than the other and that differential causes an anti-gravity effect.

Anonymous at Sat, 18 Jan 2025 03:10:09 UTC No. 16554708

>>16554666
>expecting a rational explanation
it’s alien technology. our reverse engineers can only guess at the different configurations.

Anonymous at Sat, 18 Jan 2025 03:48:41 UTC No. 16554731

>>16554666
By creating low pressure zone on the top to throw air downward

Anonymous at Sat, 18 Jan 2025 03:54:49 UTC No. 16554739

>>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?

Anonymous at Sat, 18 Jan 2025 03:58:03 UTC No. 16554742

>>16554739
Dunno. I never studied fluid dynamics.

Anonymous at Sat, 18 Jan 2025 04:19:17 UTC No. 16554756

>>16554674
An Introduction to Fluid Dynamics

Anonymous at Sat, 18 Jan 2025 04:23:09 UTC No. 16554762

>>16554666
It 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

Cult of Passion at Sat, 18 Jan 2025 10:48:54 UTC No. 16554972

>>16554669
>fluid dynamics
Everything you know about reality is wrong-warm summer evening in ancient Greece.

https://youtu.be/QKCK4lJLQHU

Cult of Passion at Sat, 18 Jan 2025 10:53:52 UTC No. 16554976

>>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.

Anonymous at Sat, 18 Jan 2025 11:10:03 UTC No. 16554979

>>16554669
No 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.

Anonymous at Sat, 18 Jan 2025 12:15:48 UTC No. 16555035

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.

Anonymous at Sat, 18 Jan 2025 12:24:08 UTC No. 16555047

>lead to a pressure differential
one side has a different length. i wonder retard. you can just google it retard.

Anonymous at Sat, 18 Jan 2025 12:25:58 UTC No. 16555049

>bottom flat
>top has a hole in it
i wonder how it leads to a pressure differential retard

Anonymous at Sat, 18 Jan 2025 12:26:41 UTC No. 16555051

>>16555049
keep wondering, genius

Anonymous at Sat, 18 Jan 2025 13:40:32 UTC No. 16555119

>>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?

Anonymous at Sat, 18 Jan 2025 13:56:37 UTC No. 16555131

>>16554762
>air deflected down
>wing (and airplane) go up
its that simple

Anonymous at Sat, 18 Jan 2025 14:08:27 UTC No. 16555135

>>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?

Anonymous at Sat, 18 Jan 2025 14:15:06 UTC No. 16555138

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

Anonymous at Sat, 18 Jan 2025 14:26:38 UTC No. 16555148

>>16555135
>"Pressure" is an absurd idea
It's the average normal force on a fluid element. That's not absurd.

Anonymous at Sat, 18 Jan 2025 16:13:00 UTC No. 16555213

>>16555119
Have you never been in a swimming pool?

Anonymous at Sat, 18 Jan 2025 16:18:38 UTC No. 16555218

>>16555213
Yes, and there wasn't any cavitation or boiling

Anonymous at Sat, 18 Jan 2025 16:44:27 UTC No. 16555235

>>16555218
try going faster next time

Anonymous at Sat, 18 Jan 2025 16:52:41 UTC No. 16555245

>>16555235
I routinely swim 15 m/s because I'm white

Anonymous at Sat, 18 Jan 2025 16:56:34 UTC No. 16555250

>>16555245
a little more effort and you may begin to experience some flow separation

Anonymous at Sat, 18 Jan 2025 17:00:01 UTC No. 16555254

>>16554666
∆p=1/2d(∆v)2

Anonymous at Sat, 18 Jan 2025 19:54:43 UTC No. 16555456

>>16554731
https://m.youtube.com/watch?v=QKCK4lJLQHU&pp=ygUXQm9laW5nIGVuZ2luZWVyIGxlY3R1cmU%3D

Anonymous at Sat, 18 Jan 2025 20:40:02 UTC No. 16555511

>>16554666
By being moved forward through the air with some angle of attack.

Anonymous at Sat, 18 Jan 2025 20:44:19 UTC No. 16555513

>>16554976
If 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.