For two years, Whisper Aero has been quietly developing what it says will be the quietest and most efficient propulsion system on the market. Upon closing a $32 million Series A funding round last week, the company finally broke its silence to reveal some details about its ultra-low-noise thrusters.
We now know that Whisper’s proprietary propulsion system is some kind of next-generation electric ducted fan that can be scaled for applications ranging from aircraft to leaf blowers. However, Whisper isn’t ready to divulge exactly what makes its ducted fan quieter and more efficient than anything else on the market.
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