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Electric drones are clean, convenient, light, and have found seemingly infinite commercial and personal uses, but even the best of them can’t fly more than 45 minutes before needing a recharge. So why not use a gas-powered engine instead?
Electric Drones Lack Energy Density
Lithium-ion batteries are the most energy-dense commercial batteries in existence. Thanks to their ability to back energy into a small space, we have laptops, smartphones, and other devices that can last for hours or even days in some cases while offering high-performance levels. Electric car ranges have also been steadily climbing to the point where they are practical for almost all daily driving uses.
Yet, lithium-ion batteries have an energy density 100 times less than gasoline! So instead of having enough power for 30 minutes of flight, you’d have enough energy for 50 hours of flight! That doesn’t account for the engine’s extra weight, but even then, you’re looking at a massive increase in flight endurance.
Gas-Powered Drones in the Real World
Most gas-powered drones are still ultimately electric;…
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