Could military and other jet engines be made quieter?

Sep 24, 2021 | Blog, Quiet Coalition

by Daniel Fink, MD, Chair, The Quiet Coalition

Military jets are very loud. Performance, not acoustic comfort of those on the ground, is the only criterion that matters. But what if jet engines could be made quieter without decreasing performance? That would help those in the plane, those on the ground, and the structural life of the aircraft itself.

That’s the promise of research from the University of Cincinnati, reported on the American Association for the Advancement of Science’s EurekaAlert website.

Adding triangular fins to jet nozzles reduces noise 5-8 decibels, which is significant since the decibel scale is logarithmic. The engine modification could also be used in commercial jet engines.

The new technology has only been tested on scale model engines. We hope this new technology works on actual jet engines, and that it is adopted soon.

Thanks to Yishane Lee at Hearing Health Foundation for bringing this notice to our attention.

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