With the creation of the first combat submarines mankind was in the hands of weapons of great destructive power. Not all naval power and did not immediately appreciated its power and the danger that it represented for shipping. However, until that time, until the sub was technically flawed and the weapons are more defensive than offensive, in the organization of any serious opposition to them by surface ships was not necessary. With this task successfully cope with any armed ship. But it did not last long. Improving submarines have left no doubt that soon they will become a serious enemy surface ships.
SENTINEL OF THE DEEP SEA
In one of the reports of competitions rocketmodeler I noted an unusual model sports class Ѕ6А famous athlete Nikolay Sergeeva from Belgorod. How many know it, and you know we have more than 30 years, never ceases to amaze his creative imagination. Was no competition, so he brought them his “brand” new. So it was this time.
Today we continue the theme begun with the publication of non-traditional polyopia supersonic fighter-interceptor MiG-25, the New development even more unusual in the choice of the prototype for the copy and overall design of the model. Today, it is about the reproduction in miniature of a legendary airplane “Voyager”, made in 1986 by flying non-stop around the globe. I hope that ego of publications will contribute to the revival of some extinct interest to the class “school” sports polycopy. It should again be noted that Voyager, like the MiG-25, only a single instance of a large number of interesting prototypes, giving modelistica up at any level.
In the magazine we told about the methods of choosing the parameters of the resonant pipes (“modelist-Konstruktor” No. 9 for 1995) for highly accelerated engines. Fulfilling the wishes of modelers, editors have been asked to continue this theme of the master of sports V. Fontecha from Cherkassy (Ukraine). As you know, at the time of opening of the exhaust window motor is formed as the shock wave represents the process of propagation of a pressure pulse with velocity V=20 sqr(T) (T — exhaust gas temperature in OK). 
The first control line aerobatic models that use the engine capacity of 3.5 — 7 cm3 modelers-athlete transferring from Junior level to senior championship… What it be? Youth as the original sample often chooses superprotein equipment of the world Champions or Europe and tries to copy it. In the absence of speciliaties on the model put serial domestic motor and… due to ignorance of technical and technological methods such copy get poor results and wasting time. The other extreme — a massive increase in checked malakhovich models. So there are “pilotazhki” with mediocre flight characteristics that don’t bring any sporting success.