Izhevsk is widely known in Russia as one of the centers of the masters on the hardware and gunsmiths. And, in spite of “perestroika”, the city tries not to lose centuries of acquired knowledge and traditions and raise worthy successors. One of the enthusiasts of this noble cause — Ruslan V. Cherepnev, teacher of additional education of young technicians “planet”. Along with his students he developed and produced many original and useful designs that have repeatedly won prizes at Republican competitions of technical children’s clubs.
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Aerial bombs are divided into three types: primary, secondary, and special assignments. The first are high-explosive, fragmentation, armor-piercing, incendiary, and some others, the second is luminous and warm (they promote more successful use of bombs main destination). Finally, the flash bombs, the so-called practical bombs, smoke and other employees for special tasks, refer to the third mind.
To maximize flight time Svobodnaya model championship class, usually try to use large angles of attack. However, flying often becomes unstable due to the disruption of flow from the wing. To address this shortcoming, Leningrad Antonov an S. Matveev developed and tested in practice a system of slotted wing.
The owners of private houses or villas are often faced with the need to prepare concrete solutions. Mix in certain proportions water, gravel and cement — a simple matter, but very time-consuming, requiring considerable time and physical strength. And if you want to carry large volumes, the process of preparation of concrete or mortar becomes hard work.
This call is present in many emails of designers bikes. “Somehow, browsing in the library of old magazines “M-K”, I came across a design velocipede with manual transmission. From that day, I had only one thought — to do”, — says Sergey Titarenko from the city of Nevinnomyssk in Stavropol region.
These sleds, perhaps, the most simple design, gather them literally in half an hour. For the manufacture of snegopada will need straight grained boards 30 mm thick (200X1200); two strips — one section 50X60 mm and a length of 560 mm, and the other 30X50 mm and a length of 560 mm, and a sheet of plywood with a thickness of 3-4 mm (620X1240).
Training control line model airplane. The fate of each Antonov an-certovica has its first model. As a rule, later he gets the ironic name of “three stick — two string”, which in fact, it is quite true because of its very simple design.
In the old days (but not so far) rarely does the farm did without such household storage, like a cellar or basement. The latter name reveals its structure: deep in the ground and lined on top of the ground room in which were stored grain and other supplies, and various belongings.
In his letter to the editor a resident of the village of Blagoveschenka of Altai Krai V. N. Ermakov calls himself a regular and faithful reader of our magazine. However, Viktor’s being modest — he is not only a reader but also an active author, “Model construction”. For nearly 20 years Viktor regularly shares with readers his innovations and technical creativity. But his ardent and constant passion aerotekhnika, in particular snowmobiles and engines to them.
Profile “CRD-2”. Developed in 60-ies of the Western European model airplanes especially for rezinomotornaya models. This profile is also recommended for glider models of a class “A-1”.