Stellar Alpina reported completing eight detonative hotfires of Engine 0, its first rotating detonation rocket engine, within 82 days of incorporation. The Duebendorf company built and commissioned the test infrastructure itself and said footage from the campaign showed up to five stable detonation waves.
Alongside the ground tests, the company announced CHF 3.5 million in pre-seed funding, approximately USD 4.5 million, led by Founderful with participation from LP&E and strategic investors. The financing supports further engine development for movement between orbits.
