At 14:48 30 January 2004, Todd Pattist wrote:
Pete Zeugma wrote:

Before
this I always thought that the blades did not appear
to be fully clear of the wing slot.

When blades are fully clear of the wing slot, you have
to be
certain that air loads will not flex them sufficiently
to
prevent them from re-entering the wing slot.

Dug out a photo i took on decent in the discus I fly
so you can see the extent of full travel of a schempp-hirth
airbrake. The blades are clear of the slot, as designed
to be.

http://uk.f2.pg.photos.yahoo.com/ph/...l?.dir=/glidin
g&.dnm=Save0018.jpg

link should work, hopefully!


I presume the
modification you made (if that's what it was) was in
accordance with factory recommendations. I know some
Grobs
had this problem, and the fix was to limit airbrake
throw
specifically to prevent the blades from clearing their
slots, thereby ensuring they could not lock the brakes
open.
Todd Pattist - 'WH' Ventus C
(Remove DONTSPAMME from address to email reply.)