"Dudley Henriques" dhenriques@noware .net wrote in message
hlink.net...
snip
This should read "Lift is the component of aerodynamic force perpendicular
to the relative wind.", and not "opposes". My error in presentation.
DH

Hello Dudley,

Nicely stated,

Are we not really looking at two different concepts of lift here?

A - The aerodynamic resultant reaction of an airfoil pulling air downward.

B - The flight physics teaching concept that an aircraft (in unaccelerated
flight) must generate a force (lift, thrust ,drag) that balances its
(apparent) weight.

ISTM that A is the description of the dynamics of motion through a fluid
and B is the description of the dynamics of motion of a mass. The fact
that the mass is moving through a fluid makes it a complex problem that is
straining our definitions, and perhaps is more of a problem of conceptual
semantics.


In regards to "not AGAIN", here in Canada we have an ongoing debate on
Quebec nationalism/referendum that we wags refer to as the "neverendum".

regards,