Composed at the end of the Second world war on Stalin’s personal order long-term plan of development of the Navy (see “modelist-Konstruktor” No. 6 in 2002) were struck by its size. It is now clear that at that time in our country, which is emerging from a difficult period of its history, was hardly the strength to carry out such an ambitious plan in full. But, most importantly, the point of this expensive program was a bit, because the main rival in the struggle for world domination, the United States already had a huge fleet to catch up, which quantitatively is not possible. The most far-sighted political and military leaders of our country understood that it is necessary to find a principally new solution that would compete with America on the oceans.
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In December 1976 the American helicopter firm Sikorsky was announced as the winner of the competition to design a multi-purpose tactical transport helicopter for the US army to replace the UH-1. The firm submitted a helicopter S-70 (UH-60), which made its first flight two years earlier in October 1974. Then the machine became the basis of the production program of the company. All the years of serial production built more than 1000 copies.
The principle of operation of my proposed homemade svetvincenat “Whelan” is forced Ventilation of the Lamp bulb and heat the bottom of the room with warm air by sending heat to the floor, which is the “waste” of the light source. Moreover, the “Whelan” cleans the air from dust. And the lifespan of the lamp filament is thus significantly increased.
The proposed model is made by the known, so-called “Moscow” scheme. Its main feature is folding the rotary wing. It is made of balsa plate with a thickness of 3.5 mm. the Center section — size 340×65 mm, ears length 140 mm — trapezoidal shape. All three elements of the wing shaped and edged for rigidity along the contour of the fake rails. The width of the front edge of 2.5 mm, the rear is 3.5. The connection of the center section and “ears” swivel, silk strips of 12 mm width, glued on the bottom. From the top, at a distance of 20 mm from the axis of rotation, affixed the hooks, wire, allied with a diameter of 0.5 mm for hanging rubber bands return “ears”. Where you touch the rubber bands to the plane of the wing are reinforced with celluloid overlays. On the center section of the fixed back two hooks. One, closer to the center, the left half for the elastic return of the wing, the other on the right, closer to the edge— thread for the fixing of the wing during takeoff.
The scientific organization of labor, rational layout and equipping of workplaces is an important reserve for increasing productivity and improving product quality. Not casually the Exhibition of achievements of national economy of the USSR, devoted to MUSIC, always attract the attention of specialists in various sectors of the economy, including young innovators, participants of all-Union review NTTM.
Carrier-based fighter BREWSTER F2A Brewster company was the first fighter monoplane taken into service by the Navy of the United States. Designed in 1937, the beginning of the Second world war he was already considered outdated. Japanese aircraft were superior to it in flight characteristics and firepower. However, the plane was successfully used not only in the US but in other countries, and its combat use by the pilots of the Finnish F2A puts in one number with the most outstanding fighters of the Second world war.
My thyristor voltage regulator (THREE) is easy in manufacture and adjustment, linearity regulation and high power output — 200 watts without heatsink and 1000 watt radiator cooling area 50 cm2.
Probably not be an exaggeration to assume that at least half of the permanent readers of the “Modeller-designer” wants to make their own car. In the following constructions as the power unit it is proposed to use a rear axle of the scooter with all its nodes completely and without alterations.
In automotive publications many legends about the origin of the name MERCEDES and the famous three-rayed star, crowning the radiators of the cars of this brand. However, most historians of technology agree that the three-rayed star symbolizes the Union of the three founders of Daimler-Motoren-Gesellschaft, the designers Gottlieb Daimler, Wilhelm Maybach and the businessman Emil Elinika. And the name MERCEDES was awarded in 1901 the first truly successful car company, appeared at the insistence of Lineka, whose daughter was named Mercedes.
A variety of machines are used to evaluate sports competitions. Automatic light displays have become commonplace at hockey games and at competitions of figure skaters and boxers, weightlifters, and gymnasts. It is usually complicated electronic device.
