They say, miracles do not happen. And yet… take a Look sometime in a spare moment in the yard of the house № 11 on the 2nd passage Schukinskaya in Moscow and you will see the real miracles! They appear in this courtyard, along with a surprisingly moving gray-haired man, surrounded by a motley bunch of kids. Opening a small neat shed near the athletic fields, the white-haired man pulls out a one after another some absolutely fantastic machines. One of them resembles a long bench, to which the front, back and sides with attached wheels from scooter; the other, also four, very similar to the old armored car; the third with a motorcycle wheel in front and a propeller at the rear — no matter what is not similar, because such machines do not exist.
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Svobodnaya “out of fashion”. Especially young modelers. What is the reason? Perhaps, in the length and lack of entertainment competition? And maybe the disadvantages of the method of manufacture of models of this type? In fact, if in the first year of studies in the clubs, build conceptual models, the second — planned complex fuselage model. That’s why the need to create a new expense of building a traditional class of models for modelers working in the groups the second year, is dictated by life itself.
The it equipment in the school yard does not present great difficulties and would not require much cost. Students are having such a station will be able to conduct geophysical or meteorological observation, and study various natural phenomena and their relationship. It will have to make only a few simple instruments and tools.
Say, in the Urals during the difficult years of chaos after the civil war an artificer built a car where everything was wooden, even the engine. However, if the wizard so the echo legendary as Leskov’s Levsha, here the use of wood instead of metal in the most important nodes in modern machinery: rolling mills, tractors, cranes, harvesters — not a legend, but a reality of our days.
“For the treatment of infield has decided to replace the tiller internal combustion engine electric. Already got polutoraterabaytny the motor. But it is three phase. How to connect to the network, where only one phase and “my best”?
Boeing Vertol Company was founded in August 1940 by F. PIASECKI, who became the chief designer and Chairman of the Board of the company. During her activities released more than 2,500 aircraft twin-screw longitudinal schema. The first helicopter of the company PV-1 single-rotor design was built in 1943. The first twin-screw PV-3 (prototype of future HRP-1 and H-21), designed by request of the U.S. Navy, took to the air in March 1945.
The idea is to make two-cylinder engine came to us with the son, that is, from want. In times of General scarcity in the economy was necessary for some vehicles to have the house and farmstead to provide those without something to exist person in the Russian hinterland is simply impossible. This is the wood, hay, building materials, which had to bring. Plowing and treatment of the infield in the required quantities without the technology, too, was unbearable.
English automobile firm Triumph, founded in 1901 in Coventry Austrian immigrant Siegfried Betmenom until 1923 was manufacturing motorcycles. The first car company became TRIUMPH 10/12НР with engine capacity of 1393 cm3, for the first time in England equipped with brakes with hydraulic operation In 1928 there was a slight SUPER SEVEN with engine capacity of 747 cm3, 1932 — SCORPION 12/16НР with a 6-cylinder engine working volume of 1203 cm –3.
Viewers living in areas of new buildings high-rise buildings and besides, near the television station, I recommend to get a homemade antenna-loop. It works reliably even when the so-called “strong reflections” television signals and preventing screen ghosting of the image.
For the computer control various devices and objects I propose to use the method of pulse width modulation (PWM) is equally successful when working with different PCs: Intel-80286 to Pentium latest modifications. Perhaps, the only condition — the presence of a free com port. The relationship with him is up to 200 m can even be done through conventional telephone wires, no protection against the electromagnetic effects of the environment. In the transition to the more sophisticated, shielded lines of the “range” computer control with PWM increases.