In gardens and orchards, dachas and school grounds — wherever there is a need to treat a small area of land, widely use universal blocks (UMB). Including homemade, are often created with maximum use of standard components and parts. One of these structures was developed and successfully tested in the case of members Ceadir-Lunga syut under the leadership of Vladimir Konstantinov.
(Model-a copy of the R-17). In October 1950, S. P. Korolev, the former at that time Chief designer of the Department of NII-88, involved in the ballistic long-range missiles, appealed to the government to develop a new missile to replace the obsolete P-1 was created, as you know, on the basis of the German V-2 (A-4). The proposal was supported, and in November 1951 a draft design was completed.The new missile was supposed to be more “simple and cheap to manufacture and easy to operate”. It was planned to use designed for anti-aircraft missiles V-300 liquid-propellant rocket engine operating on nitric acid and kerosene tractor with pressurization fuel supply system.
Free energy wind always encouraged and designers-professionals and enthusiasts-homebrew to many attempts of its use. However, it was not so easy because of the “swampy” nature of the source. It should be noted that at present there are many wind turbines of various designs, capable of operating with high efficiency and effectively accumulate energy in the most convenient form of energy. However, the production of such wind farms on their own – a rather difficult task.
Many farmers dream of a mini-tractor. It can be purchased in the store or do it yourself. But the benefits of a mechanical assistant would only be the case if it comes with tools that allow to mechanize agricultural work. One of such tools — a homemade trailed two-row potato-planter, which will be discussed.
