As promised, here is part 1 of our series on motor and propeller theory. Part 1 covers the coil magnet model, Kirchhoff's law for a motor, Back EMF, Kv, Kt, and motor efficiency.

By the end of the first video, you should really understand why is a motor is inefficient and the relation between electrical power, heat and mechanical power. The motor model is constructed part by part. I tried making this series different by giving a lot of examples while being backed by a solid theoretical background. We have more tutorials on our website. If you have any question or comment, my colleague and I will answer questions!

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  • So what is the ultimate takeaway to maximize flight time?

    an Airship...:)

  • Thanks a lot!

  • It is very nice Charles! it is a very nice explanation.

  • Wow fantastic video! Thanks for making it.
  • Great video Charles. I am patiently awaiting the next installment :)

  • @Bjorn: We are going to get to that! There is no unique solution, but there are bad solutions!

  • So what is the ultimate takeaway to maximize flight time?

    Thanks for the tutorial btw :)

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