Uploaded July 2026 | Updated September 2026, 5 days ago

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Modern commercial jet engines are among the most refined pieces of engineering ever developed. They are quieter, more fuel-efficient, and dramatically cleaner than the engines that powered earlier generations of airliners. So in this video, we take a look at why Boeing introduced engine chevrons, how they reduce noise, why they also reduce engine efficiency, why Airbus refused to adopt the technology, and why Boeing itself eventually decided to abandon the design on its newest aircraft.

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