For more than 70 years, scientists and engineers have been baffled by the thunderous roar of jet engines — a problem that has ...

Whatever other qualities they may possess, jet fighters are not known for their quiet engines. They could soon become considerably less noisy without any loss in performance, though, thanks to a ...

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 ...