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.
Public Design Bureau
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!”
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.
FOLDABLE MOTO – CULTIVATOR
When creating mechanical prepolitical, tillers and other small tools, the tinkerers are facing a number of problems: from the study of kinematics (reliability, compactness, and originality of technical solutions), acquisition for the planned machines of the nodes of parts (cheap motor, for example) and ending with the Assembly and debugging of the whole structure. How to overcome the most common difficulties and become the owner of a quite workable tiller, is published below material.
RECUMBENT RECORDS
The term recumbent, all wheeled vehicles muscle-powered, is used in our country since the mid-1970s On the recumbent Vita Kharkiv J. Stepchenko, as the first swallow of a new kind of vehicles, “M-K” told in No. 7 of 1976. The rest of the world so-called practical design intended for passenger transport and provided with a casing-body.
FOR A SAILBOAT SKIING
When going on a long journey, skier, usually relying only on its own strength. However, it is possible to summon the wind, erecting for this purpose a sailing ship. To collect such towing is a snap, using weapons from the sail Board mast, hicok-wishbone and sail with a set of lat However, all this can be made independently. To start work conveniently with wheels, pre-arranging a couple of cameras from the truck or wheeled tractor, their dimensions will depend on the size of wheel hubs and wheels.
EASY, AND THE FARM WILL FIT
A zealous owner-samodelka all always there. Even his mini-tractor at times there, not to mention the mower-threshers, other motorcycle and electropolishing. And that’s very understandable with this equipment really is never ever lost. A worthy place is occupied, helping to maintain the farm in good condition, manual tools and simple (but highly effective in fact) fit. Some of them, the magazine has told its readers. Basically, it was more design and technical solution “for the garden” (“modelist-Konstruktor” № 6’91, 9’93, 5’95). The following publication on a makeshift structures, the scope of which focus on a personal farmstead. They are made from so-called scrap materials, “home” technology accessible and understandable to any beginner. At the lowest cost possible to get the maximum result.
“VIRTULA” EVERY DENT
Elementary simple, ultra-reliable and very good running kachestva distinguished for the attention of young avtomodelistov development. This technique is extremely necessary for the NAC are beginning their career in the technical work malchishek, and for the more experienced, for whom this model may serve not only kachestve simulator, but also as a debugging stand for testing engines and new nodal solutions.
LET THE WIND
The wind has always been a symbol of impermanence, and attempts to transform its energy into electrical energy has led often to results that are not very encouraging. Indeed, everything you expect from the source of electrical energy stability: clicked the switch and turned on the light. And the wind, alas, changeable. However, to make it a reliable source of electricity possible, to use already well developed scheme with intermediate energy storage battery.
