If a drone works the same as a helicopter, why are helicopters too loud and drones produce less sound even if you compare their noise with respect to their sizes? - Quora
If a drone works the same as a helicopter, why are helicopters too loud and drones produce less sound even if you compare their noise with respect to their sizes? - Quora
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If a drone works the same as a helicopter, why are helicopters too loud and drones produce less sound even if you compare their noise with respect to their sizes? - Quora
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