Hughes XV-9 tested hot-cycle propulsion with tip-jet rotors in the 1960s, proving the concept but facing noise and fuel ...

Rolls-Royce and easyJet have successfully run a modern jet engine on 100% hydrogen through a full simulated flight cycle at NASA’s Stennis Space Center, marking an aviation first. The four-year ...

It is easy to admire an aircraft in flight, gliding across the sky, but far harder to imagine the furnace within—jet engines, ...

There's no argument that helicopters are not the same as jets. From their vertical lift to their hovering abilities, helicopters serve a purpose uniquely their own. But that doesn't mean they aren't ...