Tag Archive: quiet aircraft

The EU wants quiet, fuel-efficient airplanes sooner

Photo credit: Airbus

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

Some encouraging news this week from the BBC on the EU’s effort to develop quiet, fuel-efficient aircraft engines. Here’s how the BBC summarizes the situation:

Modern jets aren’t nearly as noisy as their predecessors from a couple of decades ago, but they still make quite a racket on landing or takeoff. If your house is close to the airport that’s bad news. Electric motors are a lot quieter, so they could allow more night flights, especially in airports close to city centres. And of course, there’s the question of emissions. Electrified aircraft, like hybrid cars, should be cleaner than conventional models.

If you live near an airport or beneath a glide path, you’re certainly wondering how soon “quiet” aircraft might appear, right? Well, according to the BBC, so do Airbus and it’s partner Siemens, as the BBC writes that “[t]he firms want to fly a demonstrator version of the plane by 2020, with a commercial application by 2025.”

If that’s not soon enough for you then get in touch with your Congressional representative and tell him/her that you want them to support the work of the Congressional Quiet Skies Caucus and the National Quiet Skies Coalition.

In addition to serving as vice chair of the The Quiet Coalition, David Sykes chairs several professional organizations in acoustical science: The Acoustics Research Council, American National Standards Institute Committee S12, Workgroup 44, The Rothschild Foundation Task Force on Acoustics, and the FGI Acoustics Working Group—a partner of the American Hospital Association. He is the lead author of “Sound & Vibration 2.0 (2012, Springer-Verlag), a contributor to the National Academy of Engineering report “Technology for a Quieter America,” and to the US-GSA guidance “Sound Matters”, and co-founded the Laboratory for Advanced Research in Acoustics (LARA) at Rensselaer Polytechnic Institute. He recently retired from the board of directors of the American Tinnitus Association. A graduate of the University of California/Berkeley with graduate degrees from Cornell University, he is a frequent organizer of and speaker at professional conferences in the U.S., Europe, Asia, and the Middle East.

Quiet aircraft coming to an airport near you?

Photo credit: Pedro Aragão licensed under CC BY-SA 3.0

By David Sykes, Vice Chair, The Quiet Coalition

People who live near airports have struggled with noise for over 50 years. The first attempts to address this problem began in 1967, literally 50 years ago! But frankly, there’s been more progress on this issue outside the U.S., where, for example, the World Health Organization has addressed the burden of disease from environmental noise and the European Union has established night noise guidelines for Europe.

Meanwhile, here on American soil, the struggle continues with groups like the Congressional Quiet Skies Caucus and regional Quiet Skies groups experimenting with different approaches. A variety of strategies have been tested with varying success: petitions, fines, law suits, noise curfews, legislation, even complete airport shutdowns. Every American community that has confronted this issue realizes it’s a tough, long, uphill battle against powerful regulatory agencies and corporations that are more committed to commerce than to public health and welfare.

So, why can’t Boeing or somebody just make a quiet aircraft?

Actually they can—that is, the EU conglomerate Airbus canand already does. And the world’s largest passenger airplane, also made by Airbus–the A380–is the quietest both inside and out. So this isn’t a technological problem. Rather, aircraft engineers, manufacturers (other than Airbus), and the airlines that buy their planes, don’t seem to care about the impact of their products on those on the ground.

Interestingly, the quiet jet engine on the Airbus A320neo is made by the American company Pratt & Whitney.

Hooray! So why don’t U.S. airlines buy the A320neo equipped with its quiet jet engines? Wouldn’t this help to address the aircraft noise problem?

Good question.

For U.S. residents there’s also this good news: a new NASA program to develop quiet electric aircraft was recently announced, but the quiet electric aircraft are small propeller craft, so this is the kind of innovation you’ll see at smaller local airports in a few years.

What about helicopters? Can they make quiet helicopters too? The answer is yes again. Quiet, electric helicopters are also in development.

Conclusion? Maybe “technology substitution”–which works in other sectors–is the uniquely American way out of this dilemma.

At any rate, government-funded research and development (R&D) efforts by NASA and Pratt & Whitney demonstrate that somebody is listening! And in typical American fashion, it appears we will invent our way out of the airport noise mess by convincing the government to accelerate funding of both public and private sector R&D—from which entrepreneurs and business titans will reap rewards later.

At The Quiet Coalition and our host, Quiet Communities, we believe that local and regional anti-noise groups might have greater success if, in addition to the other strategies they’re already trying, they also emphasize “technology substitution.” This approach has worked well in cities and towns on issues like:

– leaf blowers and lawn mowers (convince your parks and recreation department to buy electric!);
– motorcycles (get them off Harleys and onto quieter electric motorcycles);
– appliances (the best-selling dishwasher these days is made in Germany and has become very popular worldwide because it’s quiet);
– air conditioning equipment (the best-selling household air-conditioning equipment is the quiet kind from Korea called “mini-splits” that were engineered to be quiet); and
– outdoor concerts (where wireless headsets are replacing noisy outdoor concert venues).

So our tech-driven American approach to “progress” may eventually get us to a quieter end-state—but the emphasis is on eventually.

In the meantime, until quieter times arrive, those of us who live near airports will have to either continue wearing earplugs or maybe experiment with the new “smart earbuds” that are now available.

And don’t forget the final option: move to a quieter neighborhood where your house isn’t underneath a flight path! Because you might have to wait a while before the above solutions arrive.

David Sykes chairs/co-chairs four national professional groups in acoustical science: The Acoustics Research Council, ANSI S12 WG44, The Rothschild Foundation Task Force on Acoustics, and the FGI Acoustics Working Group. He is also a former board member of the American Tinnitus Association, co-founded the Laboratory for Advanced Research in Acoustics (LARA) at Rensselaer Polytechnic Institute, served as lead-author of “Sound & Vibration 2.0 (2012, Springer-Verlag), and was a contributor to “Technology for a Quieter America” (2011, National Academy of Engineering). A graduate of the University of California/Berkeley with graduate degrees from Cornell University, he is a frequent organizer of and speaker at professional conferences in the U.S., Europe, Asia, and the Middle East.