In one of the rooms “M-K” in the report from the championship of Russia on model rockets, I noted the rocket plane category S4 Nikolay Tsygankov team in Murmansk region. I must say that the chosen scheme with a large wingspan (about 950 mm) and elongation of about 20 provides good performance as well. This contributes to the convexo-concave profile of the wing, and elliptical shape of the bearing surface when viewed from above. And external contours of the tail look perfect. All this allows to a minimum to reduce aerodynamic drag. Originally decided N. Tsygankov and the problem of drag reduction during takeoff model. He used double-folding “ears” (consoles) of the rocket and to prevent the occurrence of flutter of the fixed wing is folded in three points (instead of the usual – in two points), securing the third hook-latch on the tail boom.
Before starts models raketoplana many athletes skeptical about the flight characteristics of an aircraft N. Tsygankov. So, the coach of the Russian national team, honored master of sports Alexey Kurepin, whether in jest, whether seriously named this scheme rocket plane “provocation.” They say, will lead Tsygankov our “rocket scientists” in the wrong direction. But in my opinion, this diagram is the direction that we need to develop rakatomalala wishing to achieve success in this class. One thing I want to mention the manufacture of such models requires a careful approach to work and, of course, high technical training of the athlete-designer.
Model N. Tsygankova, I would have reacted to the so-called “Moscow” scheme. This is the folding wing and its turn for takeoff along the fuselage at 90°.
Now about the structure itself. The fuselage is made by a single technology of two elements: the nose part (body) and tail boom. Case vyklevyvajut on a cylindrical mandrel with a diameter of 7 mm. at the Beginning it is slightly heated and coated with a separating paste (“Edelvika”), Then impose “building” material. First glue one layer of glass (thickness 0.15 mm), pre-impregnated preform with epoxy resin. Giving the binder a bit to freeze, place one layer of carbon fabric, and another layer of fiberglass. After drying, the top layer carefully vyskazyvat and cut to length up to 160 mm. Similarly vyklevyvajut and the tail boom with a length of 443 mm, using a tapered mandrel having the smallest diameter of 2.5 mm. the two elements on the aluminum tube, the insert inside, with a length of 15 mm and a wall thickness of 0.5 mm with a diametrical bore for screwing the fastening screw of the wing.
On the subtle end of the beam attached tail made from balsa veneers 1.5 mm thick. First, glue the stabilizer. It elliptical shape in plan. On his left side at the rear of the cut brake with a maximum width of 26 mm. In the same place to it is fastened the rubber to deflect up for the forced landing of the model to the lower plane of the flap is glued cravings (determinator) – cut the fishing line diameter of 0.3 mm and a length of about 550 mm with a loop at the free end. Swivel flap with the stabilizer – on the sticky tape.