In recent years, Amateur designers snowmobiles somehow forgotten about the ski-tracked vehicle whose design is thoroughly worked out by dozens of manufacturers in hundreds of models, and prefer a more simple and universal to all-terrain vehicles on low pressure tires. However, from time to time enthusiasts snowmobile equipment design and classic motonarty, creating a simple and functional design. A typical example is the ski-track snowmobile “Polar wolf”, designed by Igor Galkin.
The unenviable fate of people unable to move on their own. Simplifies their lives only a specialized vehicle — a wheelchair. It allows to drive up to the bookshelf or the window, go to the balcony, finally, just to stretch my muscles. Of course, you can buy a modern wheelchair factory production. However, I think it is not affordable for everyone. And especially the disabled.
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.
