“Made without balsa? Then bad!” — is unexceptional opinion about aerobatic traditionally there is a perception among most athletes. Especially categorical estimate the model from the point of view of its material beginners — experienced only pilots first, to clarify, do not use fiberglass.Maybe you shouldn’t be so categorical in his judgments
only “dress for success”? Ultimately, all flight properties of the model do not depend on the used materials, the main thing — successful, from a design point of view, a well-designed power and aerodynamic configuration.
An example of this is the proposed flight, which can be collected even on the kitchen table from readily available materials.
With the introduction of new technical requirements to models-copies category S5 most preferred as a prototype steel two-stage rocket with large differences in diameters of the housings of the steps. This requirement well enough to answer the research rocket developed in the US on the basis of the accelerator anti-aircraft missiles “Nike” (“Nike-Tomogavk”, “Nike-Keygen”, “Nike-Apache” and others).
Self-propelled artillery 105mm setting M7 widely known as Priest (“Priest”). She was the main American destroyer during the Second world war and one of the most numerous, released at this time. The weapon was in service with many artillery units and all units of the armored forces of the United States. It was accepted into service in April 1942 as the M7 105mm Howitzer Motor Carriage howitzer was the end of the war “circulation” in 4316 copies.
A number of recent publications in “M-K” on the cord design racing cars and snowmobiles helped us in creating equipment and more heavy class — under the engine working volume of 2.5 cm3. Despite the fact that the published information has mostly referred to “trucks”, most of nodal solutions have been shown to be beneficial in the classroom as-2 and AM-2. Sharp weight reduction and a simultaneous simplification of the circuit and process of manufacture, the almost total absence of metal and processed by machines details helps aeromarine with “paper” beam and a kind of motor mount on three points and remain leaders in technology, accessibility of buildings and possibilities of achievement of high sports results.
For individual construction is often necessary to make processing of logs for construction of wood with different cross-sections (beams, plates, boards). Due to the large weight of logs and the lack of a reference plane such processing conventional saw and planer (without additional equipment) almost impossible to do. This task I chose the following way.
The problem of choice of the first model arises not only to beginners but to the heads of circles: what computers have to offer first came to class? After all, you need to choose one that is not so difficult to build and which will not test the patience of the young shipbuilder of his “mnogozadachnosti”. But the model should have good performance, not to stay in last place in the competition, and appearance as close as possible to this ship. All the required qualities have proposed a model-“Pramod” class EX-500 (polyopia length up to 500 mm). Its able to build even a novice athlete, working independently, without the help of the instructor.
It’s a letter to the editor. In it two leaves of sketches on the reverse side of which a short description and a few photos of the model. No return address, no signature of the author. What is it? The mystery still remains unresolved. But one thing is clear — sent material about Cordovan Aero glider will be important for athletes, both young and experienced. Proof the experts say to any of the claims from an engineering point of view is not the “fault” — all the calculations are justified! The editors decided to publish the anonymous letter. Because navarana if not the overall scheme, at least part of the individual decisions will the creators of sports technine tomorrow. We can only thank the stranger who made such an unusual gift to readers-modelers. So, we give this letter.
Good modelers! Almost all of the many sports classes they have and the same subclass designed for students. Equipment from the “juniors” easier, more accessible, and to treat her in the competition much easier than with the “older” supermodels of today.
For a start I suggest the readers-to motorists to conduct a little experiment. Once outside the town, stop by high-speed stretch of highway and watch whizzing past you cars. However, here you need not to watch but rather to listen. A quarter of an hour you will learn to distinguish aurally, the main types of cars: a sound portrait of the major role played by a characteristic noise of the flow over the body. But here comes a car with a roof rack and audio, the picture changes dramatically. The impression is that the car literally pushes through the dense unyielding environment. By the way, the impression is confirmed by experiments in wind tunnels. Purge models and full-size cars with roof racks have shown that increases dramatically the so-called Cx is the drag coefficient. But it depends on the speed and fuel consumption.
