By powering spinning propellors with hydraulics instead of electricity, this drone massively boosts its range.
day batteries and electric motors will be up to the task of powering all the vehicles we rely on: from carseven planes, but the current reality is that gasoline and other fossil fuels are much higher density fuel sources than batteries and can power motors and engines much longer with considerably less weight.
So why are there no quadcopters with tiny gas motors powering the individual rotors when the skies are full of gas-powered planes crisscrossing the globe? The problem is that gas-powered engines can’t be as precisely controlled as electric motors, and being able to immediately and accurately adjust the rotation speed of each rotor on a quadcopter is essential to stable and controllable flight.
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