Orbital Baguette One
HyPrSpace
OB-1 is HyPrSpace's orbital micro-launcher under development in France, using a turbopump-free hybrid rocket engine to deliver up to 235 kg of payload to low Earth orbit.
Key figurescomparable across the catalogue
- Payload capacity
- 235 kg
Normalised to common units so this product can be compared with others in its category. The supplier's own wording is below.
As published by the supplier
- Height
- ~16 m
- Propulsion
- Hybrid rocket engine ('Terminator'): solid HDPE fuel grain + liquid oxidizer, helium-pressurized, turbopump-free
- Engine thrust (demonstrator)
- ~100 kN
- Payload to LEO
- Up to 235-250 kg
- Target orbit
- LEO, up to ~400 km altitude
- Key customer/contract
- CNES R2D2 contract (~€50M, 5 launches up to 235 kg to LEO)
- Flight heritage/status (mid-2026)
- No orbital flight yet. PDR completed Nov 2024; Terminator engine hot-fire test campaigns completed July and Dec 2024; suborbital Baguette One demonstrator flight planned H1 2026; first orbital OB-1 flight targeted late 2027
About
Orbital Baguette One (OB-1) is an orbital micro-launcher being developed by the French startup HyPrSpace (Bordeaux, founded 2019). The vehicle is built around HyPrSpace’s proprietary ‘Terminator’ hybrid rocket engine, which combines a solid HDPE fuel grain with a liquid oxidizer and a helium pressurization system, eliminating the need for a turbopump. OB-1 stands roughly 16 metres tall and is designed to place payloads of up to 235-250 kg into low Earth orbit, targeting the responsive/small-satellite launch market and France’s strategic autonomous access to space. Development has been supported by CNES’s R2D2 contract (~€50 million) and a €35M PADA1 consortium project. As of mid-2026, OB-1 has not flown: HyPrSpace completed a Preliminary Design Review in November 2024 and full-scale ‘Terminator’ engine hot-fire test campaigns in July and December 2024. The company’s near-term milestone is a suborbital demonstrator flight of the related ‘Baguette One’ vehicle (targeted for the first half of 2026), followed by a ‘Ground Toaster’ full flight-ready engine test (Q4 2026) ahead of OB-1’s planned maiden orbital flight, targeted for late 2027.
Documentation
No public datasheet yet — request the datasheet / ICD from the supplier.