Hmm, Nitish, this seems highly simplified. Although it is nowhere near my area of expertise, I suggest that the lift a helicopter or a quadcopter gets is in respect to the size of the rotors and their speed so they are very similar.
There doesn't really seem to be any complexity for even rotor numbers (e.g. standard helicopter) but uneven rotor numbers seem to introduce some (solved) complexity.
Gandhimathi, you can buy quadcopters or helicopters (min 2 rotors) at any toy store.
A helicopter is highly efficient, highly agile, have higher mechanical complexity but lesser electric and electronic complexity but on the other hand a quadcopter is lesser efficient, lesser agile having less mechanical complexity but having high electric or electronic complexity.
In general and simple words we can say that a quadcopter gets its lift and thrust by 4 rotors but a helicopter is gets it lift and thrust by single rotor.
Regards,
Nitish
Hmm, Nitish, this seems highly simplified. Although it is nowhere near my area of expertise, I suggest that the lift a helicopter or a quadcopter gets is in respect to the size of the rotors and their speed so they are very similar.
There doesn't really seem to be any complexity for even rotor numbers (e.g. standard helicopter) but uneven rotor numbers seem to introduce some (solved) complexity.
Gandhimathi, you can buy quadcopters or helicopters (min 2 rotors) at any toy store.
From my little knowledge a Quad copter would have four motors. If it has 8 motors it would be called octo-copter and so on. A helicopter has only two. Although I'm not 100% sure all the multicopters I had seen have a circular symmetry. As for the applications most current quads seem to be quite small and in the RC category. I currently have two quad copters and use them for automated tracking applications. The main advantage of the quads over helicopter are the maneuverability. You have lot of control and they are more stable.
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