The combination of modern materials with the experience of traditional model aircraft building allows you to create a model airframe in about half an hour. At the same time, materials for a flying model can be found in almost any home or in the most ordinary stationery store. Such a glider can be a child's toy or the first simulation experience. It can be done at home with children or in a labor lesson in the primary grades of a comprehensive school.
It is necessary
- - self-adhesive paper;
- - pine lath 3x3 mm thick;
- - cotton threads # 10;
- - glue "Moment";
- - ruler;
- - square;
- - pencil;
- - scissors;
- - a sharp knife or cutter;
- - wire cutters.
Prepare slats. Two of them should be 30 cm long and one each 14 and 5 cm. Take one long strip and measure 11 cm from one end. Find and mark the middle on the second one of the same strip. Align the middle of the second rail with the mark on the first so that they are perpendicular to each other. Secure them with glue and thread. You should have a crosspiece formed by the fuselage and the spars of the future wing.
From the other end of the rail on which you laid 11 cm, measure 2 cm. On the 14 cm rail, find the middle. In the same way as in the previous case, fasten the strips perpendicular to each other with threads and glue. You have received a fuselage with stabilizer and wing spars. Make sure that the stabilizer and wing rails are on the same side of the fuselage. This glider scheme is called "Duck". The stabilizer of such an aircraft is located in front of the wing. Many modern supersonic aircraft are assembled according to this scheme.
Using a string, connect the ends of the wings to the tail of the fuselage to form an isosceles triangle. It consists of a spar and a trailing edge of the future wings. Mark a distance of 4 cm from the stabilizer spar along the fuselage and make a small notch on the fuselage rail so that you can fix a couple of turns of thread. Secure a piece of thread with a knot and coat with glue. Leave the ends of the thread about 12 cm long.
Connect the ends of the threads to the ends of the spar of the stabilizer so that you again get an isosceles triangle. Its vertical is the fuselage rail. The threads should be tight enough without sagging - this will ensure the rigidity of the structure. You have the frame of the future glider. Now you need to fit it.
Place a sheet of self-adhesive paper on the table, with the protective layer facing up. Lay the frame on it with the wing down. Trace the wing so that there is a margin of about 1 cm on the side of the spar. This edge is needed to bend around the rail. Cut the paper along the outline. Remove the protective layer and carefully place the wing on the blank. Bend the edges around the rail, remembering to cut out an extra square near the fuselage. Cover the sections of paper formed from the bottom of the glue with paper triangles and carefully smooth all the glue points.
Paste over the stabilizer in the same sequence. Then flip the model over so that the fuselage is at the bottom and the wing and stabilizer rails are on top of it. Tie a thread to the ends of the wings and pull it so that they are slightly bent upwards. This operation must be carried out very carefully so that the slats do not crack. Place a small rail 5 cm long as a spacer between the thread and the fuselage in the place where it adjoins the wing spar. Fix the rail at the junction with the fuselage and wing with a drop of glue.
The model is adjusted using test runs. It is necessary to launch it with the stabilizer forward. If the model in flight tries to lift its nose, falls on the tail and loses stability, you need to add a small weight to the nose. This can be, for example, a piece of plasticine, a paper clip, etc.If the model "sniffs" and goes into a dive, then you can slightly cut the end of the rail protruding in front. You can also add a weight to the tail of the model.