A small group of us in BARCS are trying to get the class introduced into the UK, initially as a class for a postal event - and if this grows then we hope to encourage local, regional and national events.
Flights are flown in 9 minute 'slots' with a 6 minute maximum and spot landing bonus. Launch is via a standard bungee and towline which should get the model to about 80-90 metres before release. Models must be built from wood (predominantly) with composite materials allowed for the boom, tail and wing mounts, wing spars and wing joiner. EPP, other foam or moulded flying surfaces are excluded.
I am planning to build an own design glider, named 'Mad Hatter'.
The wing section is the well proven Mark Drela AG35. This uses 10x0.5mm Carbon Fibre caps over 10mm wide balsa 'webs' (in reality the spar) and 6x0.6mm caps in the tip panels. No Kevlar thread spar winding will be needed in this model, it does not have to carry the load of a winch launch.
I am getting quite interested in carrying out stability predictions and using my spreadsheet I have the following: