At 20:54 30 June 2005, Stefan wrote:
Chris Reed wrote:

And I should add that I was explaining the exercise
from memory and may
have got the speeds wrong. 90 kts is definitely over
the top for

Watch the limits: The LS 4 for example is limited to
77 knots on the winch.

As you are fond of pointing out, read the thread.

What Chris is describing is an upper air excercise
(no winch involved), Va and Vne are relevant, the max
winch speed is of no concern (personally I favour 70-75kts
as an entry speed, 60 isn't quite enough to get the
glider into the winch launch attitude, push over and
then stop the nose dropping on the horizon, 90 would
work but you'd be wasting height).

To simulate the situation which kills people (namely
spinning as a result of commencing a turn before flying
speed is regained after a cable break) you dive to
acquire speed, pull up into the winch launch attitude
then, at the appropriate moment, shout 'bang' and recover,
but check the pitch down at the normal gliding attitude
for 60kts, then immediately start a co-ordinated turn.
A Puchacz will immediately spin off this if you get
it right (the speeds are quite critical), too slow
you can't hold the nose up, too fast and it gets 'untidy'.
Trying to do this demo off a real winch launch would
hurt.