Oh, the effective energy density of even the best battery chemistries is an order of magnitude less than the useful energy density of combustion engine aircraft? Just compensate by getting *extremely* good aerodynamic efficiency.
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Replying to @Robotbeat @SizeMichael and @willPS21
We can reach a lift to drag ratio of over 70:1 with modern sailplanes. That's approximately an order of magnitude better than a Cessna, which is 8 or 9.
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