>From Rob Hart 
-----Original Message-----
If a reasonable performance single seat glider, backed by a worldwide
comp system, was available at a good price, then I think the idea would
work. The design should also include a one man rig trailer and (if
possible) provision for self launching (as I too think that this will
dominate the future of gliding).

Reasonable performance is of course in the eye of the beholder. My
thoughts are 40:1 or better max L/D, but with a modern aerofoil giving a
good performance at 80 kts.
---------------------------

There are a number of problems with Rob's suggestion:  Any _new_ std class
glider design costs about the same amount to produce from scratch regardless
of performance.  Manufacturers try to get the most bang for buck by really
working the last few percent of performance from their designs.  By
'downgrading' the performance of a new design, you will not get a cheaper
aircraft.  This was demonstrated by the H205 Club Libelle and similar
aircraft.

Self launchers, whilst presenting many advantages, only serve to keep the
acquisition cost up.  Compare the cost of a new ASK-21 to the ASK-21 Mi and
similar self launching types to non-self launching types.

The solution to this is to take an existing design (proven and popular) eg
H201 Std Libelle and make that the aircraft for a single design comp across
the world.  With the original design effectively paid for, all you need to
cover are the production costs and a small % profit to the manufacturers.
With a licencing agreement, several manufacturers can feed demand and help
keep the cost down (supply vs demand here).

As a personal aside, I am keen to arrange an 'Ozzie Libelle' regatta at some
stage in the next few years for all Libelles - Club, Std and Open including
perpetual individual trophies and perhaps prize money for the winners in the
three types.

Anthony



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