At 02:18 20 September 2010, ContestID67 wrote:
But what is the advantage of the motor in the tail? I can think of
one disadvantage - you can't retract it.

A perfectly sensible configuration for an electric motorglider, saves the
weight and complexity of the retraction mechanism, negligible drag with
the propeller blades folded back. The only surprise (to me, anyway) is
that this setup hasn't shown up on any non-solar electric motorgliders,
yet...

Marc