"jon" wrote in message
ups.com...
: On 11 Okt, 22:49, "Androcles" wrote:
: "CWatters" wrote in message
:
: ...
: :
: : "mike regish" wrote in message
: ...
: : I think that the shape of the wing simply allows for a greater range
of
: : angles of attack. A sheet of plywood would providelift, but only at
a
: : very
: : precise and small angle of attack.
: :
: : The airfoil shape allows the wing to
: : provideliftthrough a much larger range of angles of attack.
: :
: : Well sort of.
: :
: : Thick wings do tend to operate over a wider range of angles than thin
: wings
: : but most subsonic wing sections will work from 0 to 10 degrees or
more.
: It's
: : above 12 or 15 degrees that the section becomes more critical.
: :
: : A conventional wing section with camber can produce +veliftat zero
: degrees
: : AOA.
: :
: : The zeroliftangle (the angle at which noliftis produced) is actually
: : negative on many conventional sections.
:
: Ever heard ofBernoulli?
: Try this demonstration:
: http://www.youtube.com/watch?v=KCcZyW-6-5o
: A Tomahawk cruise missile uses its wings as a control surface more
: than forlift. Straight and level is useful for the computer programmer.
: He thinks that way.
: http://www.youtube.com/watch?v=19XXTArAGaM
:
:
: All aircraft fly due to wings Angle of Attack (AOA).

Tell it to a bumble bee (BB).