Swiss Students Test 20,000-Detonation-Per-Second Rotating Rocket Engine

A team of ETH Zurich students from the ARIS Pegasus project tested a rotating detonation rocket engine powered by propane and liquid oxygen, achieving stable detonation waves at up to 20,000 per second in a nighttime test at Dübendorf Air Base. The milestone underscores growing international interest in rotating detonation propulsion, which could improve fuel efficiency and payload capacity for future space missions, though it demands advanced materials and ultra-fast fuel injection. The project highlights collaborative, iterative student research and places Switzerland among a small group pursuing RDRE demonstrations.