As it is clear from the name that these are helicopters which are in fact toy helicopters and are controlled by some remote which operates on radio waves.
Indeed the invention of a radio control helicopter was a huge success in this field but the question arises that what should be the power source used by these helicopters and it must not be very costly, also the fact was kept in mind that the working efficiency of radio control helicopter must not be disturbed. By the time many types of these RC helicopters had already come in the market and many new are still waiting to come. There are many types of these helicopters some of which are mentioned here like electric powered models, gasoline powered and nitro powered RC helicopters.
The most energy efficient type of these helicopters is the electric powered models. They are the most economical and use very low amount of energy. There are many types of batteries which provide power to these models; it could be nickel cadmium battery or some other kind of battery. Using this kind of helicopters you can have fun only within the limit of time through which battery provides power. If someone wants to have more fun and want to increase the enjoyment time then you must have to buy a battery which provides more energy and has longer life than you can increase your fun rate.
A gasoline powered remote controlled helicopter is known as the moderate type of helicopters. It is more efficient than those which use electric batteries as their power source. They use a mixture of fuel and organic oil as their power source. These types of helicopters have a small combustion engine which is placed in them.
One of the most efficient radio control helicopter is nitro based models. This type of RC helicopters uses a mixture of nitro-methane and organic oil as their fuel. They are the type which is the most expensive one. The advantage of this type is that they can attain much larger altitude and also can gain high speed in very short interval of time. They are not so common among people because they are expensive and they use an expensive fuel as well.
Another type of these helicopters is being invented and that type is the most efficient one, they are the gas RC helicopters. This type of helicopters is specially designed for the expert users, and only professional flyers should use them because it is much difficult to use them and dangerous also. A radio control helicopter is the best invention of the modern age and youngsters are them as hobby.
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