Anyone interested in the history of armored vehicles is well known that highly characteristic feature of the external appearance of the German tanks since 1943 was an anti-magnetic coating of armor — so-called “zimmerit”. Originally this coating was intended only for the Eastern front, but soon became an integral part of all tanks of the Wehrmacht. “Zimmerit” with a rather complex chemical composition, in simplified form, is represented as a mixture of latex with cement. The idea of such a coating is rather controversial, since the magnetic mines were used only by guerrillas, and after application the tank was still “clean” place (rollers, tracks, etc.). In the end mine was “to stick” and to railway platform, and downhill equally flew echelon with tanks, as with the “Cimmeria”, and without it. But nevertheless, the Germans did it quite costly.
HOW TO MAKE “ZIMMERIT”
With all the advantages of fiberglass hulls for model rockets the traditional process of production is highly labor-intensive and unsound. Meanwhile, the conversion gave the modelers a new and very interesting material is heat resistant fiberglass gasket STP-4. It is used widely and, having a small official shelf life, often charged and often goes to the shops “Junior technician” or “Do it yourself”.
Developed in the circle of aircraft modeling
In the manufacture of sailboats on a small scale a lot of work goes into the production of the most likely guys-putenkov. A method of simplified simulate these parts and nosing integral from a single piece of metal. The use of a special mandrel (Fig. 1) allows to achieve good results both in accuracy and in appearance.
We offer cordovano-pilotando design developed in the model aircraft kraine Industrial syut Perm city under the leadership of K. Minkova. It is designed for engine KMD-2,5 and has a detachable wing, stabilizer and fin, which greatly simplifies the transport of the model and its repair. “Pilotage” is designed for those who have sufficient experience in modeling and wants to possess elegant and functional sports equipment.
Aware that in the modern mass automodelisme in a very objective and not very reasons there is a critical situation to the attention of athletes, club Directors, and especially the workers of the Federation of auto modeling sport of Russia unusual material. It is dedicated to the development of a new concept (hopefully, very promising!) class car — unmanaged vetrogonov.
Present to the readers a model rocket class S1B (altitude) with a total impulse of engines to 5 N·s allowed A. Mityureva for a number of years show high sports results (1990— second place at the world Cup, 754 m; 1991— first place in the match USSR—USA, 860 m; 1992—second place at the world Cup, 787 m; 1993— first place on European championship, 1178 m). It should be noted that such good results have been achieved thanks to, among other things, and specially designed engines designed by A. Sparia.
Unbeatable the development of composite and “duralumin” technology in the championship class expense of building a traditional Р2С, n unfortunately has a negative side. First of all it concerns the mass popularity of time. The fact that the technology which provides the elite group unikalnye results, not tan available in regular krukowski conditions. In Patni to apply the techniques of the masters also do not necessarily guarantee expected performance and technical data in connection with many subtleties at all stages of model generation. Moreover, starting from the selection of raw materials, adhesives, technologies, tooling and ending with the balancing and debugging machines, originally designed under a single superdigital. Important is the problem of the scarcity of the same materials and adhesives.