Engine torque / power / work / electronic power conversion / actions?
I read about how the work and torque / power / work / etc engine power. I am wondering how I could apply it to an electronic motor. For example, I have a RC helicopter with a brushless motor 4000kv. it is somehow possible to convert the kv books or other form of measurement? otherwise it would be the right way to measure the torque / power / Work / power? Any help would be great:) Cheers
Kv is constant on the RPM unloaded from a brushless DC motor at the top (and non-RMS) voltage on the coils connected son (the back-EMF). For example, a 5700 Kv motor, supplied with 11.1 volts, will run at 63,270 rpm nominal. By Lenz's law, an engine will create a back-EMF proportional to the speed of rotation. Most of the ESC does not boost the voltage of the battery. Once the engine is running so fast that the back-EMF is equal to or greater than the battery voltage, it is impossible for the ESC to "accelerate" the engine, even in the absence of load. Kv is the voltage constant (capital-K, V index), not to be confused with the kilovolt, whose symbol is kV (lower-case k, capital V). http://en.wikipedia.org/wiki/Brushless_motor Kv_rating # This is not much help with a torque or power. The best way to get power is to estimate or measure current and voltage, and the use of the rule of power: power · ? = · Power efficiency figure Current ? is probably 90% or so for a brushless DC motor.
T-Rex RC Helicopter, Kyle Stacy Pilot, justgofly 450TH Motor
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