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...leaving the train station at 12 o'clock....

Quote:

Originally Posted by cockerpunk (Post 11831260)

i mean you edited out the part about pressure distributions. its clear you have an ax to grind with me from PARF and didnt read the post and/or dont care what i said.

this is the post which clearly says that pressure distribution is the important thing when computing lift:

"net doward throw is a simplified answer, and not a true determiner. useful, but not the be all end all determiner. lift is a force, a force is generated by pressure over an area. you can generate a pressure differential with the shape of the wing, or with the angle of the wing, but both methods create a pressure differential, higher on the bottom, lower on the top (until stall)."

bolded for emphasis.

either you didnt read it, or you didnt care and decided to lie about my post.

:rolleyes:

Yes, you included the part about pressure, but only after you reinforced "downward throw" twice. And THEN you said "its about pressure distribution, not "down flow" - My focus was about that inconsistency of yours.

Quote:

Originally Posted by island911 (Post 11831175)

Why is it going faster? Because it's getting pushed forward faster by the leading edge?

I mean, the air is still until the plane flies into it. The air is going to be pushed forward and up by the top side of the wing. :cool:

If the wing is going to work, the pull down of any deflected air back into the vacuum created on the top of the wing has to be dominant over the upwards deflection. I'm sure it's fairly easy to design a wing that doesn't pull the air back down. It'll have bad aerodynamics and will fail to do its job. They put the ones that work on planes.

Sent from my SM-G988B using Tapatalk

Quote:

Originally Posted by island911 (Post 11831270)

...leaving the train station at 12 o'clock....
:rolleyes:

Yes, you included the part about pressure, but only after you reinforced "downward throw" twice. And THEN you said "its about pressure distribution, not "down flow" - My focus was about that inconsistency of yours.

no, i didnt. i minimized downward flow twice. and explicitly stated it was not the correct answer.

"net doward throw is a simplified answer, and not a true determiner. useful, but not the be all end all determiner. lift is a force, a force is generated by pressure over an area. you can generate a pressure differential with the shape of the wing, or with the angle of the wing, but both methods create a pressure differential, higher on the bottom, lower on the top (until stall)."

emphasis added.

like its very clear you didnt read the post and decided to attack me over your failure to read the post.

I have this nightmare..... I'm sitting in the middle seat with Island on one side, CP on the other....

I think to myself .... but out loud....

"I wonder what makes this airplane fly?"

They better serve hard liquor or else :D!

Quote:

Originally Posted by KC911 (Post 11831389)

this is what happens when people get emotional/political over basic science. :rolleyes:

he just read the first sentence of my post, because we disagree politically, he stopped there, assumed it was wrong, and then attacked me for what he thinks i posted. and now he has to figure out a way to mis-read my very clear post to make it reasonable to conclude that i said literally the exact opposite of what i said.

the secret is that i just did basic unit analysis. lift is a force, and forces are computed using pressures over areas. therefore the lift generated is based on pressures. now those pressures can be achieved several different ways (as i detailed), and that can be based on having a "down flow" and even is most often created by having a "down flow" (ie AoA) but that does not mean that downflow computes the lift accurately. it doesn't. because lift is based on pressure.

mjohnson, I hope you have learned what you needed to know about lifties:D

I am going to close this because the airplane has taken a dirt road...what a place. This was a thread on aerodynamics FTLOG.

BTW, my partner has an MS from Stanford in Aero...I just got off the phone with him.

He can help!