On Oct 9, 6:00 pm, Le Chaud Lapin wrote:
On Oct 9, 6:15 pm, Randy Poe wrote:

(2) Conservation of momentum (for every action there's
an equal and opposite reaction) says that you can't push
up from the inside. You'll create a counter force pushing
down.

Finally, someone speaks reason.

Now all we need to do is see that the jar might as well be a the
volume of a wing, and the same principle applies.

Not possible to have air on inside of wing pushing up against
underside of top of wing without having same said air pushing downward
on overside of bottom part of wing.

-Le Chaud Lapin-

Shoot. And here we used to help the 150 off the ground on a hot
day by pushing up on the ceiling, and if the wind was calm we'd blow
on the windshield, too. Are you saying we were wasting our time?

Seems to me there was ONE guy who talked about the air inside
the wing, but you implied that there were "people" that believed the
air inside had something to do with lift. Not honest about things,
trying to make us all look as ignorant as Mx, or trying to raise your
reputation by finding others to step on. It won't work.

MX and someone else talked about wings with no camber. He was
referring to a sheet of plywood with no curvature and was out to
lunch, as usual, but symmetrical wings have no camber. Camber is the
difference between the chord line and the centerline of the airfoil,
he http://www.av8n.com/how/htm/airfoils.html#toc56 scroll
down to Figure 3.12. Or this one:
http://www.centennialofflight.gov/es...ils/TH13G2.jpg

It would help if these "experts" used the correct terminology so the
rest of us misguided pilots knew what they were talking
about.

Dan