GE and Lockheed Martin have demonstrated a new rotating detonation engine ramjet design in a series of tests that show significant potential for efficiency gains. If developed into a full missile ...

This works so well that one of the key engineering problems of such engines is to design the air inlet to slow down the incoming air to subsonic speed before it heats so much that it melts the engine.

Boeing and Nammo completed their first test of the new Ramjet 155 artillery shell. Unlike conventional artillery, the new shell uses a ramjet engine to fly farther and faster. Ramjet 155 will be able ...