A new antidote for noisy airports: Slower planes

An MIT scientist has discovered a simple way to battle the airplane noise that’s become a major nuisance in several cities: Slow the planes down. It turns out engines aren’t the major culprit anymore. New airplanes are much quieter. It’s the “whoosh” that big airplanes make racing through the air. Computer models suggest slowing departures by 30 knots would reduce noise on the ground significantly. Flights will last a few seconds longer, and airlines will burn a few more gallons of fuel. But “hundreds of thousands of people would get some reduction and for tens of thousands, it would go from problematic to not problematic,” says John Hansman, an aeronautics professor and director of the International Center for Air Transportation at the MIT. <br/>
Wall Street Journal
https://www.wsj.com/articles/a-new-antidote-for-noisy-airports-1520429994
3/7/18