A number of recent publications in “M-K” on the cord design racing cars and snowmobiles helped us in creating equipment and more heavy class — under the engine working volume of 2.5 cm3. Despite the fact that the published information has mostly referred to “trucks”, most of nodal solutions have been shown to be beneficial in the classroom as-2 and AM-2. Sharp weight reduction and a simultaneous simplification of the circuit and process of manufacture, the almost total absence of metal and processed by machines details helps aeromarine with “paper” beam and a kind of motor mount on three points and remain leaders in technology, accessibility of buildings and possibilities of achievement of high sports results.
Of course, the ultimate goal of creating such machines — that athletic performance — in the first place depends on the maturity and the bringing of the engine. But the model itself needs to be under a good engine. We therefore believe that the time searching for the optimal design of cars has passed (though it’s not pleasant…), and it makes no sense to build new “experimentally” when there is brought, the debugged technology and very simple technique. I would like to note that, as can be seen from the publications in the end it turned out that the aerodynamics to increase the rapidity of the models is insignificant; with satisfactory streamlining in front of the athlete-designer, there is only one task — to ensure sustainable progress for all modes.
That’s exactly what this feature of aeromodel we wanted to talk with the followers of aviamodelirovaniya. The fact is that, despite the typing scheme, in competition you can find quite a variety of focal solutions machinery. “Fuselage” — wooden dugout, fiberglass, mixed designs (although most of it is still Vileika of Kraft paper offered by the journal). Against this diversity, I have nothing, as the weight of the body on all driving performance is affected little, and here it is only important to provide rigidity for satisfactory processability. But the stabilizers… the Most common “tails” of duralumin sheet, although not as rare and solid wood or plywood options. But from the point of view of stability of the course none of the above is simply unacceptable! As most distant from a center of gravity detail, the stabilizer and the tail defines a large part of the total moment of inertia of the whole model, and this is the main characteristic vibrational stability of the device on the go.
Control line racing model snowmobiles with the engine working volume of 2.5 cm3:
1 — front point of support (ridge or pair of wheels), 2 — tail boom (tube made of Kraft paper with a thickness of about 0.8 mm), 3 — eyelet engine model 4 — engine fairing, 5 — strut engine mounts, 6 — spinner, 7 — propeller (birch), 8 — main landing gear, 9 — cord strap, 10 — screw carb adjustment, 11 — stabilizer (original version), 12 — plate with screws of fastening of the stabilizer.