Whisper Aero claims radical advance in quiet, efficient electric jets

Whisper Aero says its electric aircraft propulsion systems are "20% more efficient and 100x quieter than anything else on the market." They're designed for drones, planes and possibly eVTOLs, and there's also a funky-looking concept plane.

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https://newatlas.com/aircraft/whisper-aero-quiet-electric-propulsion/