Re: HydroDynamic Lifting=BS

Ewoud Dronkert <[EMAIL PROTECTED]> wrote in message news:<[EMAIL PROTECTED]>...
> On Mon, 1 Dec 2003 01:19:04 -0000, Julian MacBride wrote:
> >> wings of aircraft are designed such that the air has to travel a
> >> greater distance around the upper face than the lower side - thus lift
> >> is generated above the wing surface 'pulling' the thing upwards.
> > 
> > the speed of air travel over the top surface of the wing is greater than the
> > underside, and consequently the air pressure is lowered in relation to the
> > surrounding atmosphere. rather than "pulling" upwards, this results in the
> > wing being pushed upward into the region of lowered pressure.
> 
> Sure, that is one (part of the?) theory. But then how can planes fly
> upside down?

Check out <http://www.av8n.com/how/htm/airfoils.htm> Section 3.8,
"Inverted Flight..."

Bill