Inside a jet engine, temperatures soar beyond the melting point of the very metal that holds the machine together. So how does it stay intact? Engineers use advanced materials, hollow blades, and ...

The engine is set to launch on the Boeing 777X in 2027.

The idea of a hybrid-electric engine for supersonic aircraft may elicit a similar initial response, but there is some very firm engineering logic behind it. Put simply, conventional supersonic engines ...