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by morsch
1735 days ago
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They don't say how/where they measured, so the figures are basically worthless. 65-70 dB(A) seems on the low end of consumer unmanned quadcopters[1], e.g. "Maximum sound pressure level for fast flyover at 15 m height: 62 dB(A)" for a DJI Phantom 2 weighing less than 2kg. If they managed to get into that range for a vehicle that must weigh many hundreds of times more, I guess that'd be very impressive. [1] https://www.mdpi.com/1660-4601/18/11/5940 |
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