How the Boeing 737 MAX, 747-8, & 787 Dreamliner's engines create problems no other modern jet faces

Designed to reduce noise, nacelle chevrons ultimately proved to be more bad than good.
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Why can’t the Boeing 747-8 be powered by any other engine type?

Breaking from the variants that came before it, theBoeing 747-8 is exclusively powered by the General Electric GEnx-2B turbofan, a close relative of the GE engine powering the popular Boeing 787 ...