It would seem that all has been investigated in this technically simple class of models, as F2D (combat model aircraft). But no, from time to time there are new developments designed to bring to perfection, if not the entire structure of the apparatus as a whole, at least the main nodes. Today we bring to the athletes is very innovative solution to this important hub, as the wing tip. If other aeromodelling classes when rendering first tackle the issues of aerodynamics, the “bouzouki” is much more important than their minimal weight and the ability to effectively combine the front and rear of the power zone of the frame together. The latter factor is important not only in extreme situations. At the same time provided a good connecting construction of the said belts, and wingtips will be significantly easier and the whole power structure as a whole.
Traditionally ending on modern machines (regardless of the “flying wing” or polosamota scheme with imposed horizontal tail) are glued together in a T-shaped profile, two balsa plates with average chord near the wing tips of about 200 mm. There are many other ways but the most common due to simplicity, manufacturability, reliability, and used by athletes for more than two decades.
However, it seems that he was more than a worthy competitor. The essence of design of a novelty — almost… the complete rejection zakonopacheny nodes as such. The proposed modifications to the front and rear of the power zone-the edge of the frame of the wing are brought together and tied a small scarf of thin plywood top and bottom wing and struts of fake plates with a thickness of 2 mm from the intermediate ribs. Thus greatly increase frame strength — now a power contour of the wing is a very tight triangle, and is pliable, a ladder of ribs, the tips and edges.
Of course, this design has its disadvantages. So, with the existing limitation of the scale up to 1000 mm triangle causes a sensitive loss of bearing area near the ends of the consoles. However, it’s not terrible — if you want the area restored to the standard borders by increasing the trailing edge or the elongation of the Central rib (last admission many athletes directly associated with improved maneuverability “bouzouki” and reduce “hysteria” of her behavior in the maneuvers). There is another point in favor of the new solution. It had already been agreed the possibility of reducing mastela it is not necessary to translate it into the rate model. After all, there is another good use of these surplus — improving traction characteristics of the plant. This is achieved through slight modification of the propeller by increasing its diameter or slightly reduced geometrical step. In any case, this change will give a slight increase in flight speed with the tape speed reduction without the tape, and (most importantly) significantly reduce the slowdown when executing the series of sharp maneuvers in battle.