Unraveling the story behind the C-5 Galaxy's unforgettable acoustic signature.

A breakthrough study has revealed why emerging electric aircraft engine technology sounds so annoying -- and how to fix it. A breakthrough study has revealed why emerging electric aircraft engine ...

NASA's Glenn Research Center has been an integral part of the nation's mission to reduce aircraft engine noise for over 70 years. The center's journey in quieting jet engines has evolved into a ...

NASA and aerospace industry partners are flight testing new technologies to see if they can make aircraft quieter. Scalloped edges on engine exteriors and toboggan-like fittings on landing gear are ...