In our journal No. 10, 1985 was first told about the devices of a new class of FSR-N and the rules of the competition. Judging by reader’s mail article attracted the attention of many modelers — they opened alluring prospects of design search in the not yet clamped by the technical requirements of the class. And now, when for the first “sighting” of the competition, we can safely predict: the adherents of a new kind of ship modelling will be many. According to authoritative experts, the class FSR-N promises to be one of the most popular in a large family of motor RC.
CLASS FSR, THE OPTION OF “HYDRO”
It is not similar to any of the existing transfer machines. Outside no wheels, caterpillars — not at all friction parts, gland seals. Only the bottom constituting an elastic pad, flexible: can be bent, forming a traveling wave. Wholehog designed and built by the Lipetsk engineer Yu. V. by Arpinum. Projection wanaheda given at different phases of movement. The kinematics of this machine are not very easy to understand. At first glance it seems that, even raised ka solid surface, it does not budge, no matter how much I ran her to the bottom of the wave. In fact it is not.
Today our story is about the original high-speed input developed in the circle of children’s club “Iskatel”. Designed for the most advanced scheme, it contains a number of technical innovations that may be of interest to experienced athletes. Cord hydroplane class A1 favorably known development the lack of scarce or toxic in the materials — balsa, glass and carbon fiber reinforced plastics, which gives the possibility of recommending the model for the building even in the school clubs shipmodelbuilding. The use of standard domestic engine CSTOM KRAS ensures the implementation of fitness standards on the level of a first level up to the candidate master of sports.
Model of champion of the USSR in 1986 in the class S4B V. Lunichkina is the result of work on improvement of the gliders with a flexible slat. Speaking with such devices, the Kazakh sportsman became the winner of many competitions.
“School” model class F2D — further development of the schematic published in “M-K” № 7, 1986 in the article “Record holder… simplicity.” Indigenous improvements of the characteristics of the new device was able to achieve, preserve the unique simplicity of the power unit (which rivals and assigned to our bouzoukis the name “schematic”). This primarily refers to the stability of the start and the behavior of the model in the maneuver on the windward side of the flight hemisphere.
“No, this simply cannot be!” — these or similar words — “the standard reaction” athletes of any rank. And calls it the mention of flight models, three years under construction in our group. When the interlocutors know that this is not about celebarty superoperator, and about the training, though consisting of a dozen pine parts… then the faces can be read only undisguised distrust.
Attract the attention of athletes and spectators time the model is tailless. Most of them presented in the traditional competition “Experiment” in recent years, has a wing to direct the sweep and power system tractor or pusher propeller. However, this scheme has a number of inherent disadvantages. So, with the engine in front of the wing there is a need for additional balancing weight for balancing the tail model, the tail boom has to greatly increase to ensure a sufficient efficiency of the vertical stabilizer. And when using a power plant with pusher propeller there is a significant probability of hitting the hands of the athlete during the spinning propeller when starting Tierney.
…Lined up at the edge of the pond, the boys tensely listened to the pre-launch countdown seconds. In the right hand each refined model of aeropittura, left index finger slightly trembling, touching ready to spin the propeller. Finally, the command: “Start!” Engines do not fail young athletes; almost all microSD rush to the opposite shore. And what is happening in the ranks of the fans!
Continuous improvement of engines and circuits cord boat allows them to develop increasingly high speed. Along with the design changes and the appearance of the apparatus Particularly dramatic changes have undergone recent high-speed model with aerodigestive. But in the class A1 scheme over many years remains, essentially, unchanged. Most athletes prefer to speak with a reliable traditional pattern: vertical location of the engine at the main building, equipped with two additional floats. The most careful attention is paid to Moto installations.
In the “M-K” No. 4 in 1983 was about a cord of car-class copies of “rally”, developed under the direction of E. Voronin. The design proved so simple and reliable that are built on published drawings of a micro-Skoda is not the first time, always steadily showing high results. I especially want to mention the original and again is extremely simple in scheme and execution of the automatic control (hold set) speed.