For many years the rules of competition flying-th activities of the International Federation of air sports is a category microrocket with authorityrules descent. At the time, the athletes were given this technique a lot of attention, then about her for some reason for a long time seemed to be forgotten. However, there is now a surge of new interest in rotochutes—so among modelers athletes call missiles with authorityrules descent.
Wanting to help the designers to keep up with resurgent directions, rich in possibilities of technical research and creativity, as well as answering letters from readers, the editors offer an interesting model of rotachute master of sport of the Tyumen region Vladimir Menshikov. Recognizing the sophistication of the model, it should be noted that still it is under development. So for all you followers of the flying sports, this scheme can serve not only as materials for copying, but as a starting point to create even more sophisticated designs.
We offer to your attention the model of the class bear is made by traditional technology and a little different from equipment championship classes, BSA and BBA. Structurally it can be divided into three parts: the rotor, the motor unit and fairing.
The rotor is made in the following way. On the mandrel 30 0 mm molded fiberglass cylinder with a length of 190 mm. torched on both edges and is cut lengthwise into three equal pieces. Thus obtained segments-fold. To each of them on the inside for rigidity stick two frame structural element, and the bottom mounted, Bal-pink “crackers”. The latter serve as a kind of adapter inserted in the cage propulsion unit in preparing the model to run. At their lower ends are mounted sectors balsa, forming together a circular frame. It protects segments-fold (rotor blades) from burnout during actuation of the lifting charge mrad.