Comments by "TotalRookie_LV" (@TotalRookie_LV) on "Real Engineering"
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Fuel also has another big advantage besides power density, that batteries don't have - it gets spent, which means aircraft gets lighter and lighter during the flight.
So, IMO, batteries are not the answer, we got to find a way to turn either electricity produced or renewables (or both) into some form of fuel. Hydrogen... it seems as an obvious choice - produce electricity, use it to produce hydrogen out of water, but storing hydrogen, especially for a long time, is a pain in a particular body feature and a whole set of problems in it's own, thus very unlikely hydrogen is the answer.
Maybe another provisional option to save fuel and diminish pollution would be use of electrically powered assisted take-off systems for civilian aircraft. Big not carrier type catapults - too complicated, too much investment into airport infrastructure. Maybe some sort of electric tug planes that would take regular planes to cruise altitude near airport and then leave.
P.S. Also - restrict flights for overweight persons! Give discounts to midg.. vertically challenged persons! XD
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