On Sun, 20 Feb 2005 09:38:30 GMT, Marc Ramsey
wrote:

Raved in particular about smoothness of wing skins (smoothest he's ever
measured, and this one was several years old). Laminar flow nearly all
the way to the trailing edge, top and bottom. Measured performance less
than expected (~29:1 LD), taped on his trademark sheet aluminum wing
fillets, performance noticeably better (~31.5:1), figures more
improvement with properly designed fillets. Very impressed overall.

Did he mention possible errors in his measurement?

7 points of missing L/D compared to the manufacturer's numbers is a
universe (and looks extremely low for the Sparrowhawk's aspect ratio).


Bye
Andreas