Currently in the world wide development and steady recognition of the electrics — RC aircraft with electric motors. In particular, this is due to the creation of and access to medalistki market a wide range of DC motors (with capacity from 25 to 1500 W under its own weight from 60 to 700 grams), Nickel-cadmium batteries of special power series (capacity at low weight without damage to give currents up to 150 A and fast charge currents up to 10 A), as well as special electronic control elements (with small dimensions and mass, switching currents up to 150 A).
THE DYNAMICS OF THE RESONANCE EXHAUST PIPES
The use of the resonance of the exhaust pipes on the engine all model classes allows us to dramatically improve athletic performance competitions. However, the geometrical parameters of the pipes are determined, usually by trial and error, since to date there is no clear understanding and clear interpretation of the processes occurring in these gas-dynamic devices. But in the few sources of information on this subject are contradictory findings, which have an arbitrary interpretation.
THE “LONG” COIL
Industry now available good double wire with PVC insulation, which occupies when winding on the bobbin a little space. So there is no need to do cumbersome carrying, about which the magazine wrote some time ago. However, the idea Tihonovich from Kharkov (“modelist-Konstruktor” No. 10 of 1985) good. So I decided to develop it further, making the appropriate changes.
BEE OPERATING
Among the ills that await center agriculture, varroa — it is far not on last place. This is called invasive disease mite that in all stages of development a parasite on the body of worker bees, Queens and drones, and brood.
CAPACITOR — IRON
In many household electric appliances — iron, tiles, fireplaces — still Dating nichrome spiral in ceramic insulators. These insulators are fragile and a spare in the sale does not occur. To replace a broken suggest using tubular ceramic capacitors CTC or CT-1. It is only necessary to remove pin pliers the ends, and thinner the Read more…
GLIDING CAR…
Curious views accompany this anipa everywhere. And no wonder — too unusual looks drown it in the car… a boat on wheels. We are talking about a vehicle that exists so far in a single copy— planing of the amphibian Triton. It was built by a man who, it would seem, very Dalen. D. T. Kudryachev not constructor, and a professional musician for a long time akademicheskom worked in the Moscow musical theatre named after K. S. Stanislavsky and V. I. Nemirovich-Danchenko.
NORTH LAGUNA
There are few enthusiasts, capable in difficult conditions to undertake the construction of a homemade car. To undertake and perform the scope of work for the design, construction and debugging, which forces only the factory design Bureau. Especially such a vehicle which offers the readers the author from Tyumen A. A. KLUNK (see photo on the cover of “Modeller-designer” No. 10 of 1996). His Laguna looks attractive even with the abundance of the streets cars of the most modern brands. The local wits say about the creation of his countryman: “Car? “Nine”? “Carlotta”? No, guys, hand-job!”
CHOOSING A FIREPLACE
Fireplaces are among the oldest heating equipment used for heating homes. Archaeological excavations indicate that the outdoor fireplace with a fume collection device used by people in 820 g. the Tradition to celebrate the New year in a country house may not be new, but is becoming more popular. Blizzard already piled up around a solid snow, and the frost painted the Windows with their mysterious floral patterns and inside, warm and cozy. And, of course, the Christmas mood special, if the house has a fireplace. Fireplace is now not uncommon: many companies offer a variety of design, even all kinds of electric simulate. But how can be compared with them even the most simple, do not have any known heating device, made with their own hands.
THE DAY CAN NOT SEE, NIGHT BED
Write your magazine since 1978 and I find it very interesting and useful. Responding to the call of the editors to be not only readers, but also active authors, decided to write to you and about your experience.
GLIDER “CD”
This svobodnymi glider — simple, durable, reliable and moderately “volatile” — was created as a training. It was assumed that newcomers in the process of its manufacture and operation will quickly master techniques of the work with the model aircraft materials and will gain the skills to adjust and run the model. However, tests have shown that among its advantages is joined by terrific “volatility” on the level of specialized osakryl models championship.
