The idea is to use the wind power to travel across the icy spaces of the winter Binala I have cherished for a very long time. Even tried to develop a special Buer, tested his design on models. But the final decision was made when I heard that a similar trip was made in 1982, the band of the Moscow Berestov. We have set ourselves a task: to pass a frozen lake, with its southern tip to the North. A preliminary analysis of the conditions of the voyage showed that the ice, along with open spaces on the lake meet and snowy places. In addition, the ice surface is not always perfectly smooth, although there are literally mirror sites. And another thing: often the ice is broken stenovymi with cracks, paths with high piles of ice — hummocks.
The width of these cracks in extreme cold reaches several meters. Finally, and most unpleasant to travel under sail in the winter “glorious sea” weather conditions are calm, which happens at times on the lake in March, and his complete opposite — a Gale-force wind at any time of the year in which the movement under sail in the Buer is more difficult.
In short, before the constructor of the glider Valery asulym was tasked to make easy and robust sailing, convenient for transportation by any transport that can be quickly disassemble and re-assemble, simple to manufacture and operate, capable of carrying athlete along with 50 kg of cargo across the ice at a wind speed of 3…20 m/s and heavy snow, with the wind 8…20 m/s.
I must say that Valery coped brilliantly with this task. Based on designs he took Buer “Tetra”, which at the time was described in the journal “modelist-Konstruktor” (No. 1 2 in 1980). Of course, “Tetra” was substantially revised, and as a result we got quite an interesting design.