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Alpha Impulsion

Toulouse startup developing an autophage rocket engine, which burns its own fuel-tube structure as it runs, for a small launcher called Grenat and an in-space thruster called Opal.

Products, by altitude

Low Earth orbit · 160–2,000 km

  • In development

    Opal

    Satellite thruster that burns its own structure as fuel

Launch · From the pad to orbit

  • In development

    Grenat

    Planned rocket that burns its own body as fuel

Government awards

DateAgencyProgramAmount
Jan 2026European Commission (DG DEFIS)Prize for Game-Changing Innovation for European Launch SolutionsEUR 950K⁠1

Milestones

  • May 2025 Ran a 17-second static fire at Agen Airport of what it called the largest autophage rocket engine in the world. Company statement⁠2

Sources

  1. I3P (Politecnico di Torino incubator)Feb 2, 2026
  2. European SpaceflightJun 11, 2025

Updated Oct 22, 2026 · How we source facts · Suggest a correction