# Stellar Alpina

**Source:** https://www.startuphub.ai/startups/stellar-alpina
**Profile type:** Startup

> Developing compact rotating detonation rocket engines (RDREs) for faster, smaller, and more efficient in-space mobility.

## About

Stellar Alpina is a SpaceTech startup based in Zurich, Switzerland, focused on developing compact rotating detonation rocket engines (RDREs). Their technology aims to revolutionize in-space mobility by making movement between orbits faster, smaller, and more efficient. The company's engines leverage detonation waves, a supersonic combustion process, to extract more energy from propellant compared to traditional deflagration methods. This leads to smaller, lighter, and higher-performance engines with fewer mechanical components. Stellar Alpina's solutions are designed to address the growing needs of the space economy for orbital transfers, repositioning of assets, in-space servicing, assembly, and future deep-space infrastructure. They have successfully commissioned test infrastructure and completed a significant engine test campaign with their first RDRE, Engine 0, marking a key milestone in Europe.

## Key facts

- **Slug:** stellar-alpina
- **Location:** Zurich, Switzerland
- **Founded:** 2026-01-01 00:00:00
- **Operating status:** Active
- **Total funding:** $4M
- **Sectors / tags:** Aerospace, Space Technology, Propulsion Systems, Deep Tech

## Frequently asked

### What does Stellar Alpina do?

Stellar Alpina is a SpaceTech startup based in Zurich, Switzerland, focused on developing compact rotating detonation rocket engines (RDREs). Their technology aims to revolutionize in-space mobility by making movement between orbits faster, smaller, and more efficient. The company's engines leverage detonation waves, a supersonic combustion process, to extract more energy from propellant compared to traditional deflagration methods. This leads to smaller, lighter, and higher-performance engines…

### What is Stellar Alpina's revenue?

StartupHub estimates Stellar Alpina's annual revenue at $1.6M (range $564K to $2.4M, 33% confidence), based on comparable companies in the sector.

### What is Stellar Alpina's valuation?

StartupHub estimates Stellar Alpina's effective valuation at $14.6M (range $9.5M to $22.8M, 24% confidence), based on comparable companies in the sector.

### How much funding has Stellar Alpina raised?

Stellar Alpina has raised a total of $4M in funding. The most recent round on record is Pre-Seed.

### Where is Stellar Alpina headquartered?

Stellar Alpina is headquartered in Zurich, Switzerland.

### When was Stellar Alpina founded?

Stellar Alpina was founded in 2026.

### What industry does Stellar Alpina operate in?

Stellar Alpina operates in Aerospace, Space Technology, Propulsion Systems, Deep Tech.

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