On Aug 24, 8:47*pm, Martin Gregorie
wrote:
On Tue, 23 Aug 2011 21:07:57 -0700, Bruce Hoult wrote:
100 knots is certainly on the slow side. 120 is much better. That gives
you an expected (120/5)^2 - 100 = 476 ft to play with.

Agreed, but mine is not a B series, so that's just over Vne, so I can't
see a good reason for intentionally going there outside an emergency in a
42 year old glider. 110 kts maybe, but thats 384 ft with 50kt pushover -
still pretty marginal.

Wikipedia says the Std Libelle has a 250 km/h (135 knot) Vne. Is that
incorrect?

That's a B series.

Mine is earlier (balsa wing skins, top & bottom airbrakes, s/n 82) the BGA
data sheet quotes 119kts for Vne. *All other limiting speeds apart from
Vne are the same for both original and B series.

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

I have pics of 201 Libelles doing low finishes... with the wing tips
drooping noticeably. I don't know if the wing is twisting or just has
a bunch of washout to begin with, but it doesn't look happy going that
fast. And that was brand new.

-Evan Ludeman / T8