Electric air taxis may be exciting, but are they silent?

Photo credit: BM für Verkehr und digitale Infrastruktur licensed under CC BY-ND 2.0

by David M. Sykes, Vice Chair, The Quiet Coalition

You have to watch this very cool video on electric air taxis. It all seems very exciting, but why don’t we hear them in action?

As you may remember, I voiced my concern about two new sources of sky borne noise that were spurred by the 2018 signing of the FAA Re-Authorization Act: (1) the imminent appearance of drone-delivery services in our neighborhoods, and (2) the growing interest in all-electric vertical take off & landing air taxis. Some thought this was pure hype from Uber—an attempt to pump up their stock before their IPO awhile back. But there’s actually quite a bit of investment in technology for small, short-hop, eVTOL aircraft.

The idea’s been out there for a lifetime that small aircraft could be wheeled out of our garages, leap straight up into the air and whisk us off to…someplace besides a crowded freeway. Will regulators shut it down? Unlikely. In fact, they’re actively encouraging development of eVTOL aircraft, particularly in Europe, where, as you likely know, they pay much more attention to community noise than we do here in the U.S.

But what about the noise—not to mention the air accidents—from the burgeoning, uncontrolled growth of drone delivery services and air taxis? Yes, they’re electrically propelled, but they’re not silent.

Who cares about this? It’s time for the Congressional Quiet Skies Caucus to re-convene and get back to work. They got the FAA Re-Authorization done (that took six years), but now it’s creating new problems that nobody seems to be thinking about.

David Sykes chairs several professional organizations in acoustical science: QCI Healthcare Acoustics Project, ANSI Committee S12-WG44, the Rothschild Foundation Task Force on Acoustics, and the FGI Acoustics Committee. He is lead author of “Sound & Vibration 2.0” (Springer, 2012), a contributor to the NAE’s “Technology for a Quieter America” and the GSA’s “Sound Matters,” and co-founded the Laboratory for Advanced Research in Acoustics at Rensselaer Polytech. A graduate of UC-Berkeley with advanced degrees from Cornell, he is a frequent organizer of professional conferences in the U.S., Europe, Asia and the Middle East.

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