Aerodynamic lift- A real problem

[Nerys]

I was wrong about nothing ONLY YOU are wrong.

pressure DOES NOT EQUAL LIFT.

pressure applied under SPECIFIC CONDITIONS can RESULT IN LIFT.

a teardrop DOES NOT CONTAIN THE CONDITIONS NEEDED TO RESULT IN LIFT.

period. End of discussion.

[Christ]

If you say so, buddy. I ended the discussion for myself at least, last night, when I made the last post I made in this thread.

I'm still waiting for you to show a single example that can be verified by source of your idea of the universal application of Newton's Laws being correct. I challenge that you can't provide any evidence other than your opinion. (By definition, if you can't prove it, it's opinion. I don't care what you've observed, because you haven't recorded and quantified it.)

[winkosmosis]

The problem here is people not being on the same page.

[Christ]

I'm on page 11. Where are you?

[MadisonMPG]

Originally Posted by Christ

I'm on page 11. Where are you?

I saw that coming from a mile away.

[Nerys]

"I'm still waiting for you to show a single example that can be verified by source of your idea of the universal application of Newton's Laws being correct."

what the hell is this? "QUOTE" from me what you want verified please. I have seriously no clue what you are talking about.

universal application of newton's laws being correct? I don't even know what that is intended to MEAN ? and I never said anything about newton's laws anyway.

WHAT are you talking about?

lets start with some basics

LIFT

39. Aeronautics. the component of the aerodynamic force exerted by the air on an airfoil, having a direction perpendicular to the direction of motion and causing an aircraft to stay aloft.

[Christ]

Originally Posted by MadisonMPG

I saw that coming from a mile away.

Surely, you did.

[winkosmosis]

Originally Posted by Christ

I'm on page 11. Where are you?

3. I set it to show 40 posts per page.

[Christ]

Nerys -

In all your "studies" on the effects of aerodynamics on a shape, have you ever come across the name Leonard Euler?

[Christ]

Lets use your example of an airfoil, even though it's not a 3 dimensional representation of the shape in question. Maybe this example will help you understand that lift is not solely an upward force.

The blades of an airplane propeller are shaped roughly like airfoils. Those blades, turning, create a differential force across themselves, which you probably refer to as "thrust", since it normally moves a plane forward, or in a direction parallel to the ground.

If that same plane were to accelerate vertically, perpendicular to the ground, those prop blades have now achieved lift. They're lifting the plane. How, in this sense, do lift and thrust differ?

Directionality. A matter of perception only. Forces are, in some cases, directly interchangeable with each other. If you follow the theorem of either Bernoulli's Principle, or Newton3, both of which explain aerodynamic lift, thrust, and several other effects which require differential pressure, lift is equal to the amount of thrust created in ANY DIRECTION.

Lift, in it's general use, which is apparently what you're referring to, is upward motion.

This is probably where we're getting mixed up. You're using terminology that my cousins in grade school understand, while I'm using terminology that requires at the very least, a basic understanding of physics and fluid mechanics.

I mean no disrespect by this, I'm only trying to figure out where the wall in our communication is.