Tuesday, April 15, 2014

why wont my mini rc helicopter fly outside?




Neil J


no its not the wind. im talking about the copter doesnt react to the remote like it does inside. outside theres more of a delayed reaction. tell me why is that?


Answer
It is because your helicopter most likely uses infrared technology.
So when flying outside...
It does work, but the signal is just shortened. The range of an IR signal is usually limited to around 30 feet or less. Infrared, also called optical control or opti-control, requires line-of-sight, that is, the LED on the IR transmitter must be pointing at the IR receiver in order to work. It doesn't see through walls. Depending on the strength of the IR signal and interference from sunlight or other infrared-transmitting devices, the range may be shortened. These limitations make IR unsuitable for RC vehicles intended for long-range flight, outdoor racing, and other activities where it may be difficult to stay in range and within line-of-sight.
So... now you know... Let me explain what you might see when you go outside and try. When you go out, you will try to fly your helicopter. It will work, but after a while, itll start flying by itself, and youll lose contorl. It will work, its just that your range is incredibly shortened.

Now, if your helicopter had an antenna on it, and it isnt using infrared technology, then it is most likely due to interference. but I doubt it.
Does your remote look like this:

http://www.crazysales.com.au/products_pictures/15/1539_10601_F.jpg

something like that with a red thing on top? If yes, I answered your question properly.

How does a Mini RC Helicopter work?




Chaz


I understand the tail rotor on a "typical" rc or real life helicopter is used to counteract the torque of the main shaft propeller, but that is not the case on a mini helicopter. The rear blade is set up horizontally (controlling pitch), so how does the helicopter stay steady (question 1) and secondly, how does it rotate left and right...this just boggles my mind! Its an small RC Hog Heli w/ two main rotor blades btw.


Answer
The 2nd rotor goes counter to the main rotor, which cancels out the torque. To make it turn left or right the counterrotating 2nd rotor is either slowed down to make it turn one way...or sped up to make it turn the other way.

The helicopter can only hover when both rotors are counterrotating to each other the same speed. Vary the speed at all of one of the rotors and then the counterrotating forces are no longer equal and the heli turns in the direction of the lacking torque




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