Public Design Bureau
“SLALOM” SLALOM
SKIING IN THE SAIL
The desire to ski “with the wind” makes us resourceful athletes to invent a new sport: racing on skis towed behind a motorcycle (skijoring), boat and even horse. Today, it seems we are on the verge of “opening” another form of skiing-a tow sport where the athlete has to match the skills of the skier with the ability to manage a sailboat on the tires with very low pressure. Such towing is already popular among fans of winter tourism, as they allow us to travel long distances without special effort on the part of the athlete.
THE WEATHER CONDITIONS AT THE START
Assigning the date of the training and competition of air or rocketmodeler, to provide almost everything: minutes to paint the starts of models of various classes, to provide participants with food and accommodation, provide them with transport service… the Only thing that it is impossible to foresee is the weather. However, the weather factors equally affect all participants, and the advantage is given to one who has knowledge of the conditions of the zone flying, pony manius physical basis of weather processes and their ability to make a competent assessment.
ONE WAY IS DIFFERENTIAL
RUBBER-ENGINE CHAMPIONS
SHOWER FOR CAM
AIR BENDS
GARDEN MINI
Amateur designers sometimes even adulthood may surprise the naive, and young, on the contrary, thoughtful and original solutions. And as an interesting personality, whose signature is a brief article describing the construction.
PIPE RESONANCE
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).