One of the most popular imagery that comes to mind when one thinks of helicopters is the coaxial helicopter; this is because the coaxial helicopter single-handedly brought endless new hordes of game enthusiasts and serious hobbyists into the world of RC aviation. Coaxial RC helicopter is the double-bladed helicopters whose popularity is derived from their incomparable stability when flying through the air. This makes these little babies easier to manipulate when compared to its single rotor counterpart. Coaxial RC helicopter is also extremely predictable making it safe enough to be flown within a compound, and earning it the top spot as the world's most loved indoor flier. Aside from all of these perks, they come in RTF (ready to fly) kits that make them all the more appealing.We can see RC Helicopter Working Way.
The coaxial RC helicopter owes its stability to its ability to eliminate the need for a tail rotor in its system completely. This is because the coaxial helicopter, unlike its single rotor cousin, has two rotors that are stacked on top one another, enabling the blades to rotate in opposite directions. In effect, the torque that is generated by each rotor independently is cancelled out. The outcome is that the two rotor's lifts are able to complement each other resulting in hovering ability and amazing stability.
And because it is a known fact that hovering is one of the main components that make up a helicopter's flight, a helicopter that is easier to hover makes it easier to fly. In fact, in the coaxial RC helicopter, the control of the yaw is transmuted to being a matter of slowing down or speeding up one of the rotors. Another plus that comes with a coaxial helicopter is that it has (theoretically) no need of a gyro which means that there is lesser tinkering and setting up needed to make it work properly and smoothly.
The coaxial RC helicopter, while very widely praised is not perfect, and also has some faults. One is that in order for the coaxial RC helicopter to fly, the speeds of the two rotor blades, to which it owed is aerial stability and hovering must share the same speed. This helicopter is very dependent on the synchronicity of the blades that even the slightest deviations from each other may prove to be very disadvantageous to the helicopter, so much so that it could lead to the helicopter to just keep on spinning wildly on the ground without ever being able to lift off. In essence, what gives the coaxial helicopter is enviable stability is also what gives it its difficulty in maneuvering. In addition, the rotor blades may sometimes bite into each other while in flight causing problems.
In conclusion, coaxial helicopters are here, and staying. They have easily become the favorite beginner's helicopter, and are also well loved by many experienced RC pilots. A word of caution: Even though coaxial helicopters are easier to fly than the conventional single rotor helicopters and other counterparts, they also require some time to master, and remember that their fast rotating blades may cause some serious injury. So although they are toys in essence, do not treat them as one.