D Ramapriya wrote in news:7e76f9d7-32f5-4585-
:

On Jan 26, 4:12 pm, Stealth Pilot
wrote:
On Fri, 25 Jan 2008 19:15:13 -0800 (PST), D Ramapriya

wrote:

Since the CL can be altered by the wing configuration - deployment/
retraction of flaps for a given pitch, e.g., I'm not sure that the
CG
and CL need to necessarily coincide for stable flight. Also, for a
body such as an aircraft, I think the CG would theoretically be
somewhere within it while the CL is a point on the fuselage, so
their
coincidence may even be an impossibility.

Ramapriya

totally wrong.

Stealth Pilot


While the CG is unchanging - ignoring CG travel due to fuel burn and
pax moving around - the CP (CL) changes with the AoA. I think it keeps
moving forward as the AoA increases. Thus, so long as the CP (CL) is
close to the CG, stable flight should be possible and their
coincidence isn't a sine qua non.

Still all wrong?


Look, you've obviously got a narrow grasp on this, but you're all over
the place with definition. Now, to be fair, there are conflicting texts,
(lots of them) but it all works the one way.
You're trying to split hairs with a chainsaw.
In short, you've got a slim but perverted grasp of the physics but
you're not speaking the right language to learn any more here.
Go get a decent book on it if you real ywant to know and then come back
and ask again. You need to swap the chainsaw for a scalpel


Bertie