The next stage of work — making the side panels. For this purpose, the balsa plate with a thickness of 2.5 mm and a length of the fuselage, and two plywood boards with a thickness of 1 mm with grooves (coinciding with the spikes spang of outow) and holes for relief. The length of these plates to half the chord of the wing. After gluing the balsa and plywood plates, mark the locations for the wing and stabilizer, and then make the appropriate cut-outs and adjust them to the desired profile. The finished side is glued to Motorama using clothespins, rubber medical bandage and epoxy glue, clothespins simultaneously pull their tail.
The upper and lower garrote made from balsa plates with a thickness of 2.5 mm. Their steam out in hot water and a gauze bandage strapped to a wooden frame, echoing the contours of the fuselage. In the finished gargrota glued polosamota, which are the same as the frames of the fuselage, cut from balsa wood with a thickness of 3 mm.
Then into the hole in the fuselage for the wing and stabilizer insert the control horns for the flaps and Elevator. Further the epoxy glue set the wing (without flaps), stabilizer and mount control system (a rocking chair with attached cables, the traction of the flaps and thrust of an Elevator). To not pull off the control horns on the ends of their hooks put on and soldered brass washers. Then glued the upper and lower gargrota. To customize the top and glued the keel. For the elegance of the model on both sides of the fuselage axis of symmetry of the wing is glued inlays (as a continuation of the wing profile).
On a pre-made wooden pig vyklevyvajut the canopy from fiberglass with a thickness of 0.1—0.2 mm in four layers. Skins, putty, customize the place of its installation on the fuselage and glued. The final stage in the construction of the fuselage — the manufacturer of the engine hood. He was recruited from the balsa plate, which is treated as the outer contour, and in such a way that the thickness of the walls amounted to 2-2,5 mm. the Finished fuselage covered with fiberglass with a thickness of 0.02 mm on a parquet varnish. If necessary, apply putty and sandpaper to bring the surface for painting.
Under landing gear at the bottom of the fuselage cut a groove into which is glued the balsa block with a thickness of 10 mm. landing gear ripped out of the dural plate (D16 or D16T), 3 mm thick, bent for to drawing and give a streamlined profile. Then mark out and drill three holes with a diameter of 3 mm under the mounting screws. The bottom of the fuselage in place, the chassis mark and drill three holes with a diameter of 4 mm and epoxy glue mount mounting fungi. Wheel main landing gear with a diameter of 44 mm, and the tail wheel is 20 mm. consists of three layers of glass, of a thickness of 0.1 mm on a pre-made matrix vyklevyvajut wheel pants. They are collected with the balsa inserts, epoxy glue after the installation of the wheels. The seams are sanded, glued a narrow strip of glass, of a thickness of 0.2 mm, and treated with putty before painting.
The fuel tank is made of tinplate with a thickness of 0.3 mm. His feature-the presence of a special penagaricano wall with six holes of 6 mm diameter. a wall to keep them in tanks large volume that is not foamed fuel. The tank is set up and fixed in the container by using pieces of foam rubber, following the alignment of the supply tube and the axis of the jet engine to its operating mode was identical in both normal and inverted flight. After final Assembly and prepare the surfaces of the model painted. The paint should be resistant to model fuel (aptenia, epoxy or polyurethane enamel).
Pilotage designed for engine “Talka” (single-channel with cross purge) working volume of 7 cm3. Propeller with a diameter of 280 mm and 140 mm step made of birch and covered with fiberglass with a thickness of 0.02 mm on a parquet varnish. Weight-rotor 320 g. If you use a different engine its weight with the screw should be in the range of 320-340 g. In this case, the offset of the center of gravity is minimal and has almost no effect on the flight characteristics of the model. In addition, for best centering of the model suggest the balsa for the wing to take with a density of 0.1—0.12 g/cm3 for the side plates of the fuselage 0,1—0,12, for gargrota 0.1, for the tail of 0.09—0.1 g/cm3.
In conclusion, the propeller must be chosen for the particular engine, which is desirable to boost. Resourceful and powerful motor is the key to successful flights. Fully equipped with fuel tank empty pilotage the cord has a mass of 1200 g. the Model is stable in horizontal flight and quite maneuverable.
V. NEDILKO, candidate master of sports, head of the aeromodelling circle dpsh them..P.Gaidar