On Tue, 3 Nov 2009 08:27:44 -0800 (PST), Udo wrote:

Andreas,
are they still using the ASW 25 airfoil on the EB 29?
Udo

Hi Udo,

I don't think so - the wing (same as EB-28) is said to be completely
new (it's got a different planform than the ASH-25 wing, the airbrakes
being on the inner wing) and each part of the wing is significantly
lighter than on the 25. It's interesting that the roll rate of the
EB-28 is nearly twice as fast as on the ASH-25, despite its larger
wing span.


However, the main advantage of the EB-28 was/is its higher wing
loading compared to a stock ASH-25 - since the much smaller ASH-31 is
not significantly inferior to the current open class gliders I dare to
predict that the EB-29's airfoils are slightly inferior to th latest
Schleicher airfoils used on the ASG-29, ASH-310 and ASH-31.

On the other hand... aspect ratio and wing loading rulez - and this is
where the EB-29 excels.

Exciting times if you happen to need to invest 400.000 bucks...




Bye
Andreas