"patrick timony" wrote in message om...

What about clouds. I've heard that some clouds weigh 500,000 pounds.
They are probably held together by surface tension.

You need to spend a little time doing some research rather than guessing
your principles of physics. Clouds are not "held together" at all.

The roiling motion of clouds I bet is related to undulation for propulsion.

Nonsense.

If ailerons are so great then why don't birds have them? For that
matter why don't any animals have wheels? Because wheels try to
pretend friction doesen't exist and end up not being able to account
for their actions:

The above is complete nonsense. Wheels don't "pretend" anything.
And you seem to be completely ignorant of what wing warping is.
Wing warping is not propulsion or lift. It's a control mechanism,
as are ailerons. It's not flapping.

How many times did you go around Mr. Wheel? I
don't know.

"I don't know" is a fairly good description of you knowledge of everything.


But when the trailing edge of the fixed wing warps the net movement is
down and forwards - so there is a tiny bit of propulsion backwards.

We call that drag (adverse yaw). But you can warp the wings on the Wright flyer
and it's not going anywhere. It's not "flapping"

Clouds lift themselves and they don't have any propulsion.

Clouds do not lift themselves.