Comparison Syma S109G vs Syma S111G

The number of control channels provided in the radio-controlled model.

Each such channel is responsible for a separate control function: the operation of the rudder, elevators, etc. For the simplest models, 2 – 3 channels are enough. Full control requires more channels. In advanced models, additional channels may be provided, the total number of which can reach 6 or more.

This category includes radio-controlled models, the design of which copies the appearance of real-life helicopters — attack, transport, search and rescue, etc. Such a design, most often, does not affect the functionality, but it gives an additional resemblance to full-size machines. This is primarily appreciated by aviation fans, however, the use of copy models is not limited to purely aesthetic moments — they can also be useful for quite practical tasks (for example, imitation of a real helicopter when shooting a movie).

General dimensions of the model. Note that the length and width are indicated only for the fuselage, excluding the main rotor. However, for ease of transportation, the blades are often made removable or folding.