Backwash Causes Lift?

Matt Whiting wrote in news:lRdOi.234$2n4.16576
@news1.epix.net:

Bertie the Bunyip wrote:
flightoffancy wrote in
news:MPG.2172e043702d7a5d989681
@news-server.hot.rr.com:

In article ,
says...

"Nope, wrong" to which claims I made?

I freely admit that my knowledge of aerodynamics is lacking. But I'm
absolutely correct about Lapin's training (or utter lack thereof, in
this case).

It's completely absurd for someone who has not studied aeronautical
engineering to stand up on a soap box and announce that the work of
several generations of aeronautical engineers is WRONG -- and that
he's
leading the charge to finding out what the facts of aerodynamics
really
are.

Lapin does this kind of thing on countless other news groups,
especially
computer science groups. He denounces decades worth of work as
inadequate or completely wrong, claims he has the right answer or
merely
wishes to find the right answer, with the result that nearly
everyone
on
the group calls him a crank. Anyone who is really an expert in the
area
he's challenging quickly figures out his meager explorations of the
subject are not worth spending any time participating in.

Lapin believes that he is here to TEACH us.

If you can find hundreds of threads started by LCL on Google groups.
He's an incorrigible usenet troll.




The downwash thing is wrong. Yes, there is some dispacemtn of air
that
causes lift, but it' only a minor contribution in the bigger scheme
of
things.

Bertie

And what about a hovering helicopter? What is holding it up?

Air?

Bertie

Matt