Chastnoe OKHRANNOE PREDPRIYATIE developing a security system that includes unmanned aerial vehicles, capable in case of an attack on the client’s property to raise the alarm to call the guards and collect the footage from the crime scene.
PENDULUM WITH ZAMOSTOTSKIY
The proposed machine is designed primarily for disposal of dilapidated wooden buildings on the wood. Because of the many nails sticking out everywhere, this waste material can not afford a chainsaw “Friendship”, and therefore worth a few pennies. Cheapness, of course, attracts. Stops other: than and how to cut this here, bristling with “raviel” a conglomeration of old boards, beams, logs?
CATAMARAN FOR FOUR
For water hikes inflatable catamaran has a number of advantages over the kayak. It is high reliability, great stability, with satisfactory maneuverability, increased permeability of the rapids sections, low weight, comfort, and convenience for boarding and alighting. In the end, the benefits outweigh the known disadvantages of a catamaran — high windage hull with the crew and low speed when driving on the oars. Propose a simple design of a catamaran, which used available materials.
A SIMPLE PLANER
Our journal has been published many designs of the plane. Basically, they are similar: there is a welded casing with base plate and mounted on the housing of the drive motor with the cutter shaft. However, in each case, the specific components and materials, its dimensions and peculiarities of manufacture. And most importantly — experience that can be used by others, why would we give you another post.
GLUE WILL NOT DRY UP
How carefully any work with glue in a tube, still the hole is clogged by dried particles. And even cover somewhere of the sunset, you will not find. Simple device eliminates these problems — a wooden stand with a stud to which the tube “nakalyaetsya” his hole in between works.
THE SECOND COMING OF THE “HYBRIDS”
The emergence of nuclear submarines dramatically changed the balance of forces at sea, not only between countries but also between classes of ships. Indeed, hunters submarines could easily reach speeds sufficient to prosecute his opponent in a submerged position. However, nuclear reactors combined with a new hull shapes were allowed to reach 30 knots and more, available to only the destroyers. Of course, followed by the construction of modern anti-submarine ships, but the advantage is pretty solidly moved to the sources of underwater threats. Lack of range of sonar allowed the submarines in time to escape a dangerous situation. However, as always in the history of arms, and they were equally unpleasant opponent. They became anti-submarine helicopter, which had a huge advantage in speed and the view from the height, especially when using the sonar reentry, which in this case does not prevent the noise of the screws.
RECUMBENT: LET’S HIT THE ROAD!
In the late 70-ies in the press, especially in the journal “modelist-Konstruktor”, wrote a lot about velomobiles. Was presented designs of various authors. Some argued that a new form of transport, which in the future will press not only a bike but a car. However, nothing happened. Why? A simple answer to this question is difficult. Will only Express some thoughts.
THE TAMING OF THE RAINWATER
My new house is all good, but there is no drain. From the roof pours on the Foundation, and the wind and walls. Shop gutters with brackets and especially the elbow pipe with funnel of its kind “inspire a quiet longing”. I do not want to spoil their good looks at home.
I decided to do my own thing.
“TREATS” TIN
Temporarily use a broken ski will be able, to use the method shown here to restore it. Take a suitable strip of sheet metal, with a hammer tight “bandage” fracture and secure the plate with small nails. This ski long, but will serve.
CHANGE ROUND TO OVAL
A letter from our reader V. Zasyadko prompted the idea to go back to the old idea of replacing the round sprocket of the bike Ellipso, which leads to the alignment torque generated by the efforts of the cyclist when pedaling. According to cyclists, the idea deserves attention, and the embodiment of her life — not too time consuming even at home. The recommendations V. Zasyadko calculation ellipse-tion of stars and of its manufacturing technology.
