PIPE RESONANCE

PIPE RESONANCEIn 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).

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AND SCREW

Wooden parts are often connected by screws. However, this connection is not always acceptable if you are dealing with blanks, for example made of chipboard, which in this case pipetted or crumble, especially under high load conditions. In these cases it is better to use a technique used in the furniture industry: in one part Read more…

MANAGED YACHT “SOFKA”

CONTROLLED YACHT

We offer the modelers designed by athletes from the Czech Republic. It is simple in design, does not require scarce materials to build, has the original technology of housing and very good on-the-go. The manufacture of this mini-yacht will not present difficult even for inexperienced athletes. Those who have already accumulated some experience in composing the frames of the hull with the subsequent sheathing plywood, can reproduce the design in accordance with their habits. Before starting work you must perform a projection of the body in natural size on thick paper and cut them out. The obtained templates are used when marking pieces of foam thickness of 38-40 mm, which are then cut with a seam allowance of about 1 mm. In the plate of the foam forming the upper part of the body, perform the opening of the cockpit, which will be subsequently pasted the details of the cabins. Both the foam parts are joined with glue such as casein or PVA. After drying the binder, the billet is processed on the side view.

CONTROL LINE AEROBATIC

CONTROL LINE AEROBATICThe 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.

TABLE FOR EVERY TASTE

CLASSIC, BUT WITH A PREFIX. The main advantages of this Desk is a classic style includes not only the large useful surface, but also increased the capacity of the cabinets. There are additional “secret”: in the top drawer of the right Cabinet hidden pull-out auxiliary tabletop support on which you can install, for example, a typewriter, a box of file Cabinet or lay the drawing tools.