The readers of our magazine are familiar according to previous publications the name of the Moscow designer-lover of Alexander Abramov. Despite his advanced age (he is now 85 years old), he continues to be active creative activity. In his home lab many layouts, working models and full-scale models of various mechanisms, including engines. Alexander invented and built dozens of them. Many of the designs are unusual and contain original ideas. But the author does not jealously protect their technological innovations from third-party curious look, but rather generously shares with all who show interest in its development. So this time, inventing and testing a few new arrangements, Alexander makes some of them to the reader’s judgment.
THE MOTORS ON THE PALM
Of all classes and types of rocket parachute patterns category S3 the most “ancient”. At the dawn of the emergence and development of rocket modeling one of the criteria of the competition was the duration of the flight. At that time it was a simple and straightforward comparative characteristics of flying model rockets. By the way, today the flight is the determining factor the benefits and performance of model rockets with a parachute. And watch the in-flight model with a large beautiful dome — fun.
In the GDR skiing designed the lift with a drum on which is wound a pull cable. To do the same, you will need a moped engine with a working volume of 50 cm3, its exhaust transmission from the motor car, homemade rope drum and band brake to it.
A bit of history. I’m 48 years old. Twenty years ago with his younger brother built a sled “Idea-2” — material about him was published in the “Modeller-designer” №11 for the year 1991. Later, when I was Director of Заводоуковскоq station of young technicians under my supervision in her circles were made around 20 such structures with different bike engines of Soviet manufacture. I must admit that the construction of the snowmobile largely contributed to assigning me to this position.
Garden cart with a wide, roomy basket and grates to build sides for a variety of work in the garden, on the plot. However, every one dealing with the earth, primarily digging, is engaged in planting, sowing. The cart is easily adapted to perform these functions: to collect on its basis the processor, combining a number of tech or other operations. Of course, you will get a non-motorized unit that is designed for your own power.
models of gliders classes A1 and A2 must satisfy three requirements — stiffness, strength and low weight. The best results are obtained by the use of tapered thin-walled fiberglass or balsa tubes. But the technology of manufacturing these beams is difficult. Our proposed design is much simpler, the material for it is available to everyone. Despite its simplicity, such a beam is well proven in operation.
In the old days tresses are able to sharpen many, although it is not easy: before you bring the blade up to the ringing of the sharpness of the grindstone, it beat with a special hammer on a rounded anvil. Now, few people know the art of hitting. And it would be necessary. For example, in collective farm “Progress”, sponsored our Cuto, in the time of haymaking on the fringes of the forest and other uncomfortable for the Parking the grass mowed manually. KOs, of course, a lot, and the old man who knows how to discourage them, a few units do not have until the new dawn, the bot came to us farmers to help mechanize the process.
For years, the rubber motor due to its ease of use and low cost were the main engine modelers. But now, with the abundance of micro-motors boat and car with rubber motor find its ardent supporters, as evidenced, in particular, and editorial mail. Among your questions, dear readers, the most frequent two. So T zavgorodnego from Volgograd, E. Shcherbina from Semipalatinsk, A. Zhdanov of Moscow and other interested in how to calculate the number of turns of the rubber motor to maximize its energy, and what is its maximum energy efficiency.
It is hard to imagine the competition without rocketmodeler launches RC models. It is, along with the competitions models-copies, quite an interesting spectacle, including from a sporting point of view. Of course, impressive for the beauty of the start of the model rocket—glider with a rocket motor and control its flight using radio signals.