A hypersonic cruise missile must do more than briefly reach an extreme speed. It ...

American researchers are finally getting a real-time view inside one of the most unforgiving propulsion systems in service, the solid-fuel ramjet, and the payoff could be missiles that fly farther on ...

Such an engine is 25% more efficient than a conventional engine, allowing it to be much more compact and lighter. It can also operate at subsonic speeds and the design allows it to modify itself so it ...

The compact, liquid-fuelled ramjet engine uses a novel combustion technology called rotating detonation that offers significantly improved efficiency for high-speed flight at Mach 5 and beyond. Engine ...