I haven't tried this manuever myself. I'd be a bit hesitant
due to the airspeed errors in some aircraft in a sideslip, and
the need for excellent airspeed control for ensured success.
Additionally, I suspect the correct airspeed varies enough
with weight that this is another factor to consider, and
is a little beyond the scope of the PPG.

Of course I will try it for fun, but for students I wouldn't
like to have them practicing this solo (when the weight is very different).
I remember trying this in the Katana DA-C1 by not using
flaps, and that the airspeed control needed meant one was at
well less than 1.3 x Vs1...

In article ,
CV wrote:

Andreas Maurer wrote:
I bet that this FAA examiner has never done that either in a modern
glider with an L/D over 30 - otherwise he's know that it's going to
take a runway of *at least* 6.000 ft and a sideslip to *very* low
altitude to be able to land without using the airbrakes.

Considering the L/D is increased by ground effect, even doubled
according to some, you have a point.

But even with an L/D of 1:80, if you sideslip to 1 m off the
ground you'll only float 80 m, about 260ft, from there, and
quite a bit less with a headwind.

Agreed that the precision needed to slip it down that low
is probably too much to ask of someone just about to get their
licence, but it does not sound too crazy as an exercise at
a more experienced level. In case you get it wrong you should
of course be ready to abort and pull the brakes well before
there is any danger of going off the far end.

Cheers CV



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Mark J. Boyd