Hypr Space

France-based HyPr Space develops hybrid rocket engine (HRE) technology as well as low-cost rockets for small satellite launches. HyPrSpace has developed a patented engine architecture that involves placing the oxidizer tank inside the fuel grain tank, where combustion occurs. The redesigned architecture results in a thinner combustion chamber and a simpler engine, allowing realistic regression rates and better mixing of reactants. As of June 2024, the company was also working on developing a third propulsion technology called Hybrid–Hybrid Rocket Engines (HRE), which reportedly has the potential to incorporate both liquid and solid propulsion technologies and does not require a turbopump, a complex and expensive piece of equipment. Its products and services address a wide range of applications, from civil to defense. 

In December 2023, the company announced that it was moving forward with its Projet Agile de Developpement d'Acces à l'espace 1 (PADA1), which would support the development of its Baguette One suborbital vehicle, scheduled for a maiden flight in 2026, to launch micro satellites of up to 250 kg into orbit, as well as the detailed design of its OB-1 orbital-class launcher. The OB-1 is designed to carry payloads up to 200 kg and uses a hybrid propellant, specifically HTPB. Telespazio France and CT Ingénierie, part of the PADA1 consortium, would provide ground segment operations and systems engineering expertise, respectively.