The big picture: Zurich-based space technology startup Stellar Alpina secured €160,000 from Venture Kick to advance its compact rocket engine technology for in-space propulsion.
Why it matters:
- Orbital mobility: As space access increases, satellites and spacecraft require more frequent orbital changes, repositioning, and deep-space travel, which conventional engines often limit due to weight and complexity.
- Efficiency gains: Stellar Alpina’s rotating detonation rocket engines (RDREs) promise smaller, lighter, and more efficient propulsion, critical for extending mission capabilities and reducing launch costs.
- Future infrastructure: This technology could enable more robust in-space infrastructure, supporting everything from satellite servicing to ambitious deep-space exploration missions.
How it works:
- RDRE technology: Stellar Alpina develops rotating detonation rocket engines (RDREs) that use continuously rotating, supersonic combustion waves to generate thrust.
- Compact design: This approach aims to significantly improve engine efficiency while reducing the overall size and complexity compared to traditional rocket engines.
- Versatile applications: The technology is designed for various in-space maneuvers, including orbital transfers, satellite repositioning, inspection, and propulsion for future deep-space vehicles.
The catch: While RDREs offer significant theoretical advantages, the practical challenges of developing and qualifying them for spaceflight are substantial. The nascent in-space propulsion market is also becoming increasingly competitive, with numerous startups vying for limited contracts and funding in a capital-intensive sector.
Key Facts
- Company: Stellar Alpina
- Amount: €160K
- Investor: Venture Kick (lead)
- Founders: Rick Röthlisberger, Simi Y. Wespi, Victor Elliesen, Patrick Egli
- Announced: 2026-09-04
- Sector: Space Technology
- Headquarters: Zurich, Switzerland
