Proving that you can't keep a good technology down, Reaction Engines' Synergetic Air-Breathing Rocket Engine (SABRE) has a new lease on life after a British-led consortium announced Invictus, a new ...
Rotating Detonation Engines (RDE) have been flown by Venus Aerospace. They use continuous detonation waves for propulsion and provide 15% efficiency gains (in specific impulse or fuel consumption) ...