Repeated attempts to rework expense of building a traditional model helicopters RC, as it was with model airplanes and gliders, were unsuccessful. This is because model helicopters, free flight, built according to a single-ended or coaxial circuits with rotating engines, do not have what is called a case. Simply put, they have neither the nose nor tail. Therefore, any movement for them, all except “up” and “down” is the direction forward. And control of the direction of motion of the model helicopter without orientated in space of body and the speed control of the movement, is impossible without swashplate. His on free-flying and so-called timer helicopters and no.
THE SPOON ON THE BUCKET
Well mixed mortar is quite a heavy mixture, which is difficult to work with. To give greater plasticity, the builders introduced it with various additives, such as clay. Work becomes easier, but decreases the strength of concrete. Craftsmen have found a compromise. Enough mixing to add to the solution… washing powder. Just one spoon of Read more…
Modern engineering makes high demands on the materials, and they, in turn, to the machining tools. Not by chance all the exhibitions NTTM necessarily demonstrates the new development of young innovators dedicated to solving these problems taking into account the specifics and requirements of each specific production, and often cross-sectoral in nature.
Indeed, the proposed chair for the hallway is not just folding, but almost entirely flat, as folded, becomes almost equal to the thickness of the four panels, from which his legs (or rather — bearing panels). This is achieved in that all the components of the chair are interconnected is not a traditional fasteners. a hinge node-based piano loops.
Laureate of Lenin Komsomol prize of student scientific-technical society of the Moscow higher technical school named after N. E. Bauman is one of the oldest in the country. Founded in 1903 N. E. Zhukovsky, the NTO over the years of its existence gave the careers of many famous aircraft designers, scientists, inventors. Good memories most of them left their intended course of development of the NTO, areas for further research, which over time has gained followers, United in independent laboratories, student research centers. Thus, in particular, in 1949, in the scientific and technical society has a new creative division of student design Bureau, which from the very first days of its existence began to work closely with the production, scientific-research institutes. With the expansion of subjects, which was engaged by SKB, it created all new laboratory, a new student design teams.
In the CSC-306 MAI constructed several devices with the power electrical system, but to talk seriously about the problem of creating a workable small elektroleta became possible only after supervising the Department has developed a unique brushless DC motor. It is characterized by light weight, high (95%) efficiency, and specific energy parameters 3-6 times higher than the corresponding characteristics of a known commutator motors.
The new school year came into its own. In every school where there is a technical club, these days his head — teacher, physics, mathematics, and sometimes any other object, certainly asks the question: how to make your content work group members on what direction to guide the initiative and creative guys?
Model airplanes still did not pay attention to a very promising engine, liquefied gas C02. But the simplicity of manufacture and operation make it much more affordable than compression and glow engines. In addition, it does not pollute the air and silent in operation. With this engine (Fig. 1) can operate a variety of aircraft weighing up to 100 g From one canister to siphon the tank (Fig. 2) can be refilled twice.