During the Second world war working on jet engines were in Germany on a broad front. They are ahead in this area all of the country and was able to convey in the production of two types of TRD – Ju-YuMO 004 and BMW 003. Equipped with their first jet aircraft – the Me 262, he 162 and ar 234 was the undoubted success of the German scientists and engineers. These aircraft were successful and widely known, but the design idea was not on, and the command of the Luftwaffe in July 1944, announced a competition for the creation of the fighter, who had the best flight and operational data than the Me 262, and is able to replace him.
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-Models of missiles doesn’t need to be. Do them and run interesting. Special, with nothing comparable to the excitement you experience the designers of such models, participating with them in competitions. In our country there are competitions copies missiles on high, and the realism of the flight. It must be borne in mind when designing future models.
In the last quarter of the last century the world was swept by a wave of invention of new muscular vehicle on the basis of a Bicycle received in our country the name “velomobile”. New modern technology and materials gave the chance to the enthusiasts of environmentally-friendly personal transport is easy, comfortable and fast enough.
When repairing machinery, especially agricultural, are quite common and at the same time melomakarouna operations cutting of sheet iron, and the manufacture of cardboard strips with holes. Often these works are performed with hand tools that does not provide neither the productivity nor quality.
The proposed device allows you to charge any rechargeable batteries with voltage from 1.2 to 15 V and a nominal capacity of from 0.05 to 20 A·h and can be widely used in radio, car owners and even users of electronic equipment. The device is a charger (current stabilizer), which uses a pulse-frequency regulation, which eliminates the need for bulky heat sink from the control transistor.
The words of the comic song “Without water — and neither the amplitude and no syudy” actually turn out to be quite a serious statement. Where there is water — less and hassle. Where it is not, on the extraction of water is necessary to take care of yourself. Especially large volumes of water need in the summer at the cottage, in the garden, the garden, as many plants require regular watering, because to rely on the timely drop of rain at least naive.
The legend says, Aphrodite was born from sea foam. Of course, it’s just a beautiful tale. But these days, many amazing things are born from the foam due to the marvelous chemistry. Foam — expanded polystyrene or polyvinyl chloride. In the poison if you can find other materials having a similarly low specific gravity and of such limitless possibilities, how this frozen foam.