In the journal “modelist-Konstruktor” was published an article by a teacher from the city of Severodvinsk Vladimir Arkhipov, dedicated to the manufacture of plastic fine-grained cylindrical gears for motor car, ship and plane models on the example of gear made of polyethylene with the basic settings of m = 0.8 mm and z = 8. Continuing the theme, the author offers the readers a mold similar to the previous one, but with one fundamental difference — it is designed for making small batches of disc gears with the end location of the tooth.
PLATE WITH TEETH
Not so long ago in the journal “modelist-Konstruktor” was about the simplest model of a glider made from a conventional packaging corrugated Board material although not aeromodelling, but it is durable, tough and light. By the way, a square meter of corrugated Board with a thickness of 3 mm has a weight of only 400 g, respectively, the density of this material is only 0.13 g/cm3! Experiments have shown that the durable and lightweight corrugated cardboard is well suited for creating flying models. Needed only in the cutting and processing of corrugated Board to consider some of its features and to use a knife-cutter, literally honed to razor sharpness, otherwise cut lines get ragged.
MODEL No. 1. This design is a continuation of work on improving the model, which is described in “M-K” (No. 1, 1972). For better aerodynamics it is applied to a fuselage of circular cross-section. The keel has a swivel mechanism to provide a forced descent. The screw diameter is increased to 556 mm, which contributes to the duration of the flight motor and improves the dynamic
Room models of small size. Simple in design and in manufacture. Material for their construction can serve as dry stubble and any weed, its structure is similar to a stalk of wheat. As the adhesive used enamel or plain nail Polish. Of tools enough to have scissors, pliers and a razor blade from a safety razor.
The aircraft we design and build do not have booths in them, and the pilot’s seat. Yes, and they do not need aircraft with a five-meter wingspan and three-kilogram payload. “But then it’s not a plane, but only a model,” you say. I do not agree. Coming out of the walls of our body SLE-manned planes and helicopters — are real, and the tasks before them are very serious.
It’s been over a decade since then, as avtomodelisty decided to make your sport all season and came up with kordovye model of the sleigh. Now, perhaps, it is difficult to name the author, the first such model: the necessity of introducing the lessons of the circles simple, affordable design that would combine the speed of production and the possibility to use the internal combustion engine, would the creative scope for the budding modeller and, moreover, would not be just “educational” (like, say, contour resonators), was clear to many.
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.
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.
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.