Diesel aircraft engines promise lower fuel burn and cheaper operating costs at a time when every gallon and every kilogram matter in the air. Yet as manufacturers push these powerplants into more ...

Researchers at Perm National Research Polytechnic University have developed an innovative sound-absorbing structure that effectively reduces aircraft engine noise.

Even if you can ignore the sounds of crying babies and booming pilot announcements, airplanes can be loud. That’s usually due to another constant noise that you may not notice when settling into a ...

Hot-wire measurement setup for a BLI configuration, featuring a ducted fan installed adjacent to a curved airframe surface. The setup enables high-resolution velocity field analysis to uncover the ...

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 ...

Engine chevrons have become a defining feature of modern aircraft, but do they really pose a problem for performance?

The newest jets promise efficiency and luxury, but hidden trade-offs lurk beneath the shiny exterior.