We can safely say that the interest of model aircraft to jet technology continued unabated ever. Until recently, however, attempts to create flying machines with jet propulsion was only occasional, experimental and research character. Of course, affected by the absence of these turbojet engines in model performance (on the serial production of the isolated supercomplex samples seriously can not speak).
We offer modelers design developed and successfully tested Czechoslovak athletes. The basis for its design was the model class F1E, with which the author is an engineer Ow. Valens was in the recent past, the champion of Czechoslovakia. New electrolyser, named “Mamba” (the African name of a small moving extremely poisonous snakes), helped Czechoslovak athlete to become a gold medalist of the national championship and in the class FSR. At the same VL. Valenta believes that despite the specialization of a new model for long races, it has preserved the “hereditary information” and can be successfully used in the RC electric class F1E. It is enough just to increase the number of batteries and to install a more powerful motor. Basically the same option (FSR) applied a set of twenty Nickel-cadmium batteries of the Japanese firm “Tamiya” and the engine the “Mabuchi 540”.
Among the priority directions of search to achieve the best results in athletes performing in class gliders F1-A, now in a special place is dinamalar — because of its effectiveness and opening new possibilities. And the point here is not only to guarantee additional 10-15 metres in height at the start, immediately after disengagement of a rail. Provide diametrom growth lead to qualitative changes in the tactics of the competition, greatly expanding the possibility of falling in the thermals. Because every additionally recruited a meter of height increases the influence of ascending streams.
An example of a creative approach to the creation of modern sports self-similar techniques can be aircar class AC-2 motor with a working volume of 2.5 cm3. Extremely simple, but thought out to the last detail, the design speed has allowed its Creator, student of the Kharkiv school of Constantine Chistova three times to climb on the highest step of the podium at the “high” competition in this class. It should be noted that reached the championship of the USSR 204,731 speed km/h was actually a record and at the same time… unattainable. K. Chistov, the result not only exceeded to date, but even the barrier of 200 km/h is not yet amenable to young athletes.
To design and manufacture a racing car that would satisfy all the requirements of the sport today — Oh, how difficult! To do this, the athlete has to be both a competent designer, and technologist, and specialist in materials science, and machine operator-universal.
Even on these racing yachts there is a continuous struggle to reduce weight. It is known that any extra pounds at least for a little bit but increases hydrocortisone fragile vessel due to the precipitation and growth of the wetted surface of the hull. And when it comes to model and conditions, it is already possible to say that relief even ten grams is the achievement.
Is it possible to attract novice modelers that have passed the basics of learning sportsmanship, to build championship models class FSR? Some leaders of the groups say that is impossible: first, boys are required to accumulate a solid experience; others argue that such experience is much faster is in the process of making championship machines.
The problem of noise of operation of internal combustion engines exist in all types of modeling. The modelers of the upper boundary of the acceptable level of noise has long been accepted 80 dB (when exceeding this value the result immediately canceled) have increasingly measured the noise of the flying machines, especially RC, are cases of control “of holosystolic” of micromachines and the competition of avtomodelistov. Performance requirements for noise suppression tougher every year, probably close to the time when the point of maximum noise will be introduced in the competition rules for all classes.
Meditating and finding equipment for the new sports season, we decided to stop on tested, proven for many years solutions. Sacrilega scheme is not too large wingspan; horizontal tail with stabilizatory part and Elevator… However, the latest publication in the “M-K” made us much more attentive to the consideration of the moments of inertia, and therefore the maximum relief of the tail section, respectively, projected for a very short bow, load-bearing engine. With the usual for pilotaggio measurements was “obladis” — because in the design model, greatly influenced by the shape and length of the nose of the fuselage. However, this problem we managed to solve due to the unusually long chassis fairings. With them the model is not only advantageous to look at the ground, but in flight is not inferior in the perception of long-nosed cars. Benefit appearance and is the simplest closure of the plant verhneraspolozhennyh shields (in the bottom of the engine is completely open), and a large spinner.
Since 1987, entered into force new “Rules for flying sports in the USSR”. Changed and technical requirements for model rockets. So, in the category B4 (model raketoplana) one of them says: “In the case of models with a flexible wing of the planning part should be more than 50% of the starting mass of the model”. As practice shows, the innovation did not deter the athletes from the construction of miniature gliders, forced to look for new ways of their technical improvement. In our opinion, taking into account the new requirements are a very promising model with Delta wing, designed by athletes from the Moscow city Ramenskoye A. Levin and I. Prikhodko.