On Mon, 21 Jan 2013 12:45:35 -0800, volkerappel69 wrote:

I am just investigating what I can do to my Libelle. I won my first comp
after 12 years in it without any modifications. I have added boundry
layer fences between flaps and alierons (climbs better) and am currently
fitting a low canopy, and will add a flap-fuselage teflon seal as soon
as it gets warm enough to work outside.

From your comments I guess you're flying an H.301. I fly an H201, so I am
uncertain if the following will help you:

My 201 has a full span turbulator in the underside of the wing, placed
just in front of where the undercambered section starts. Subjectively, it
improves the high speed polar and the BGA agree, because it adds 1 to the
BGA handicap (from 89 to 90). It is an easy and cheap modification to
make. Glasfaser (www.streifly.de) support this modification, so ask them
if it will work on your glider.

Glasfaser also supply and fit wing root fairings and will know the EASA
rules about fitting them.


--
martin@ | Martin Gregorie
gregorie. | Essex, UK
org |