Exclusive: Stellar Alpina Raises $4.5M to Build Rotating Detonation Engines

Stellar Alpina Raises CHF 3.5M to Build Detonation-Based Propulsion for Mobility After Launch

The Zurich-based startup is developing compact rotating detonation rocket engines (RDRE's) to make movement between orbits faster, smaller, and more efficient. Just 82 days after incorporation, Stellar Alpina completed Europe's first known commercial RDRE hotfire campaign, turning a deep-tech concept into tested hardware at exceptional speed. The CHF 3.5 million, approximately USD 4.5 million pre-seed round is led by Founderful, Switzerland's le…

Zurich’s Stellar Alpina raises €3.8 million to build detonation-based propulsion for in-space mobility

Stellar Alpina, a Zurich-based SpaceTech startup developing compact rotating detonation rocket engines (RDREs) to make movement between orbits faster, smaller, and more efficient, has secured €3.8 million (CHF 3.5 million) in a pre-Seed funding round.  The round was led by Founderful, with participation from LP&E and selected strategic investors from the DeepTech ecosystem. “The space economy is moving beyond the question of access to orbit. The…

Exclusive: Stellar Alpina Raises $4.5M to Build Rotating Detonation Engines

A European propulsion startup is trying to bring a new kind of thrust to the market. Switzerland’s Stellar Alpina announced today that it raised a CHF3.5M ($4.5M) pre-seed funding round to support the development of rotating detonation rocket engines (RDRE). These engines can offer more efficient in-space mobility compared to traditional chemical propulsion systems—at least in theory. Founderful led the round, joined by fellow Swiss VC LP&E. Sha…