HyPrSpace Successfully Completes Two Engine Test Campaigns at DGA Essais de missiles in Gironde

Two Full-Scale Tests to Confirm the Performance of Our Terminator Engine

We reached a major milestone with the successful completion of two hybrid rocket engine test campaigns—just a few months apart—at the DGA Essais de missiles site in Saint-Médard-en-Jalles (Gironde). The goal of these Terminator engine tests was to verify that our hybrid propulsion system performs in line with predictive theoretical models. These successes also validate the transition from prototype to a full-scale operational version, providing experimental proof of the technology’s reliability and performance.

During both campaigns, we carried out multiple test firings, each with specific objectives — varying thrust levels, thrust modulation, data acquisition systems, and more — all with an incremental, test-and-learn approach. A third campaign is already in preparation, with new testing parameters planned.

Hands-On Training for Future Launcher Operations

These test campaigns provided us with critical hands-on experience in operating an engine using cryogenic propellants. They form a key part of our roadmap toward the inaugural flight of Baguette One — our suborbital demonstrator scheduled for 2026 — and OB-1, our orbital microlauncher.

Next steps will include integrating the liquid oxygen (LOX) tank, adding a thrust vector control (TVC) system, and conducting firings under simulated flight conditions. These strategic developments bring us significantly closer to our goal: delivering a space access solution that is more competitive, more flexible, and more sustainable.