HyPrSpace
Company Information
Headquarters
Le Haillan, France
Year Founded
2019
Industries
Aerospace, Space Launch, Satellite, Space Transportation, Defense
What Is HyPrSpace?
HyPrSpace is a French space technology company developing hybrid rocket propulsion systems and launch vehicles. Its core technology combines solid fuel and a liquid oxidizer in a hybrid propulsion architecture designed to simplify rocket-engine construction while retaining thrust-control capabilities associated with liquid propulsion. The company is developing this technology for suborbital and orbital launch vehicles, including Baguette One and the Orbital Baguette One (OB-1).
What Does HyPrSpace Do?
HyPrSpace designs and develops rocket engines and small launch vehicles for space-access applications. Its primary focus is a patented hybrid propulsion architecture that eliminates the turbopump used in many conventional liquid rocket engines. The company is integrating this propulsion system into Baguette One, a suborbital demonstrator, and OB-1, an orbital microlauncher designed for small satellite missions.
HyPrSpace also develops launch services around different mission configurations, including dedicated, lead, and shared flights. Its R2D2 contract with CNES covers five launches carrying payloads of up to 235 kg to low Earth orbit, while the PADA1 project supports development of the OB-1 launcher and Baguette One demonstrator.
HyPrSpace Technology
HyPrSpace’s core technology is a patented hybrid rocket propulsion architecture that combines solid HDPE fuel with a liquid oxidizer. Unlike conventional liquid rocket engines that use turbopumps to move propellant, the HyPrSpace design uses a pressure-fed system with helium to pressurize the oxidizer. The company says this architecture significantly reduces the number of engine components and simplifies manufacturing and assembly.
The engine incorporates a thin annular combustion chamber designed to maintain combustion efficiency across different engine sizes. HyPrSpace has conducted full-scale Terminator engine tests at the DGA Essais de missiles facility in Gironde, including tests involving thrust levels, thrust modulation and cryogenic propellant operations.
The company also uses recycled HDPE as its solid fuel, citing its availability and lower carbon footprint. Its propulsion architecture is being developed as a scalable technology for both suborbital and orbital launch vehicles.
Why HyPrSpace Matters
HyPrSpace is relevant to the space technology landscape because it is developing an alternative approach to rocket propulsion rather than simply adapting conventional liquid or solid propulsion architectures. Its hybrid engine combines solid fuel with a liquid oxidizer while using a pressure-fed system without a turbopump, potentially simplifying the propulsion system and its manufacturing requirements.
The technology is being developed alongside actual launch vehicles, giving HyPrSpace a direct path from propulsion research to suborbital and orbital launch applications. Its partnerships and contracts with organizations including CNES and France 2030 have supported development of Baguette One and OB-1.
HyPrSpace Products & Platforms
Terminator Hybrid Rocket Engine
Terminator is HyPrSpace’s full-scale hybrid rocket engine demonstrator. The engine is based on the company’s patented propulsion architecture and has undergone full-scale hot-fire testing at the DGA missile testing facility in Gironde. Testing has included different thrust levels, thrust modulation and cryogenic propellant operations as part of the development path toward flight hardware.
Baguette One
Baguette One is HyPrSpace’s suborbital launcher and technology demonstrator. Developed through the PADA1 France 2030 project, the vehicle is intended to demonstrate HyPrSpace’s hybrid propulsion technology in flight. The company currently lists the first Baguette One flight as planned for the end of 2026.
Orbital Baguette One (OB-1)
OB-1 is HyPrSpace’s orbital microlauncher being developed for small satellite missions. The company’s R2D2 contract with CNES calls for five launches carrying payloads of up to 235 kg to low Earth orbit. HyPrSpace currently lists the first orbital flight for the end of 2027.
HyPrSpace Applications
HyPrSpace’s technology is primarily being developed for space launch and satellite deployment. Baguette One provides a suborbital platform for demonstrating the company’s hybrid propulsion technology, while OB-1 is being developed for orbital missions carrying small satellite payloads to low Earth orbit.
The company’s launch model also includes dedicated, lead and shared flights, allowing different mission configurations for customers. Its government-backed development programs and work with French defense organizations additionally place the propulsion and launch technology within a broader dual-use aerospace context.
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Frequently Asked Questions
What is HyPrSpace's hybrid rocket engine?
HyPrSpace’s hybrid rocket engine combines solid HDPE fuel with a liquid oxidizer. Its patented architecture uses pressure feeding instead of a conventional turbopump and is designed to simplify rocket propulsion systems.
What is Baguette One?
Baguette One is HyPrSpace’s suborbital launcher and technology demonstrator. It is being developed to demonstrate the company’s hybrid propulsion technology before the company proceeds with its orbital OB-1 launcher.
What is the OB-1 rocket?
OB-1, or Orbital Baguette One, is HyPrSpace’s orbital microlauncher for small satellite missions. A CNES contract calls for five launches carrying payloads of up to 235 kg to low Earth orbit.
Why does HyPrSpace use hybrid rocket propulsion?
HyPrSpace’s hybrid approach is intended to combine characteristics of liquid and solid propulsion. The company’s pressure-fed architecture removes the turbopump and reduces the number of engine components, while the liquid oxidizer allows thrust modulation.
When is HyPrSpace expected to launch Baguette One?
HyPrSpace currently lists Baguette One as ready to fly at the end of 2026. Its roadmap lists the first orbital OB-1 flight for the end of 2027. These are company-stated target dates and remain subject to development and launch readiness.
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