Whisper Aero Raises $32 Million for Ultraquiet Electric Ducted Fans
Whisper Aero, a Tennessee start-up, spent the last two years developing a propulsion system that it says is quieter and more efficient than any other. Now it has finally revealed part of its secret: electric ducted fans.
A drone equipped with Whisper Aero's electric ducted fan is pictured in flight.
Whisper Aero validated its low-noise propulsion system in flight using a 55-pound demonstrator drone equipped with a 10-pound electric ducted fan. (Photo: Whisper Aero)

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