Shares of Caterpillar, the maker of mining and construction machinery, are up more than 30% since year-end, making it the biggest contributor to the Dow Jones Industrial Average. WSJ’s Jonathan Weil ...

Jet engines are among the most complex technologies in the world. Only a handful of countries, including the United States, ...

The Rolls-Royce UltraFan could be the powerplant of choice for next-generation aircraft.

Thirty years ago, GE Aerospace transformed commercial aviation with a material swap that most ...

Aerial firefighting helicopters ingest significant volumes of airborne particles, and operators are advised to conduct periodic “compressor washes” to remove the contaminants from the compressor.