On Mon, 18 Aug 2003 10:37:27 +0100, Martin Gregorie
wrote:

On Mon, 18 Aug 2003 13:21:46 +1000, Mike Borgelt
wrote:

On Sun, 17 Aug 2003 21:34:19 +0100, Martin Gregorie
wrote:

On 17 Aug 2003 17:12:58 GMT, Ian Cant
wrote:

Martin,=20

I just can't resist a good argument.

Sorry, but your vector diagram as described gives AOA with sign =
reversed.

I must respectfully disagree. If you fly into a rising airmass from a
neutral or sinking one your instantaneous sinking speed is reduced by
the vertical velocity of the new air mass - hence the reduced AOA.
As Eric pojnted out you mean *increased* AOA until at equilbrium.

Mike Borgelt