When landscaping a backyard or suburban area, as well as in the construction of which other individual object is constantly required to fill the fossa and sinuses soil, which needs to be sealed. Inevitable hronotropony work, and quite a large volume, for example in the preparation of the base for the concrete floor in the structure, the backfill soil into the cavities of the trench during the construction of Foundation etc. in the production of these works need a weapon impact as a tamper.
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Description a three-wheeled tandem, published in the journal (№3, 1979), I liked inherent in it the idea to tandem bike of the usual single, without making major changes to the original design. But the proposed version was not very satisfied: still frame of the second bike had undergone the unwanted interference. I wanted to find a way of articulation, that when there is no need to tandem it was possible to restore the bike to original form.
Little micro-car BMW ISETTA. This has happened more than once. Crest of the economic crisis, the Great depression or the post-war ruin — and instead of the heavy limousine with big motors car company suddenly started to produce a compact and inexpensive cars that are in high demand from impoverished buyers. The result is a miniature sidecar pulled from the verge of bankruptcy that created them, car companies, and they, in turn, pulled out of the crises and the country’s economy.
Four-engine airliner Britannia started to be developed on the instructions issued in 1946, for long-haul flights to the outskirts of the British Empire. Originally it was going to equip with piston engines, but in 1949 they were replaced TVD “Proteus”. The first prototype flew on 16 August 1952 mass production of the Britannia was carried out between September 1954, However, forced landing in Uganda in operational trials in March 1956 delayed the introduction of the aircraft on regular routes. The first flight from London to Johannesburg, the plane made 1 Feb 1957
Our correspondent met with the President of the hang gliding Federation of sports of the USSR Evgeny N. Yelizarov and asked to tell about the development of this technical sport in the country.
Among the many electronic devices a special place is occupied by a simple acoustic alarms, sensors which thanks to its versatility can be used in the home is almost unlimited: from security systems to automated switches or as parts of more complex devices activated by noise (acoustic) impact. For example, warning of high levels of noise in the room (now such devices is becoming more important). As a special case, acoustic sensors can be used even in the foci, for example, on a Christmas tree, when the words “Christmas Tree!” will automatically turn on the light garlands.
