Across France, small but ambitious space companies are racing to field their own rockets, betting that nimble micro-launchers can win back ground lost to American and Asian rivals — and one name keeps coming up: Latitude.
France’s answer to the micro-launcher race
For years, European launch activity meant Ariane, Vega and long political debates in Brussels. That era is changing fast. France is now backing a wave of “NewSpace” start-ups that build smaller, cheaper rockets aimed at the booming small-satellite market.
One of the most closely watched projects is Latitude’s Zephyr Launcher, a compact, two-stage rocket designed to lift a few hundred kilograms into low orbit. If all goes to plan, the first flight could take off as early as 2026 from Europe’s Kourou spaceport in French Guiana.
France sees micro-launchers as a way to regain sovereign access to space for small satellites, without depending on foreign rockets or shared rides.
That ambition reflects a broader geopolitical shift. The United States has SpaceX and Rocket Lab. China multiplies its private launch companies. Even smaller European states such as Germany and the UK now have their own micro-launcher hopefuls. Paris does not want to watch from the sidelines.
Latitude and the Zephyr Launcher
Latitude, based in Reims and founded in 2019, positions Zephyr as a workhorse for operators of CubeSats and mini-constellations. The firm targets customers that want a dedicated ride to orbit instead of secondary payload slots on big rockets.
What Zephyr is designed to do
Zephyr stands about 20 metres tall and uses a classic pairing of kerosene and liquid oxygen (LOx) as propellants. Seven 3D-printed “Navier” engines power the first stage, while a vacuum-optimised version pushes the upper stage through the thin air above 100 kilometres altitude.
- Payload to low Earth orbit: roughly 200 kg
- Payload to sun-synchronous orbit: about 80 kg
- Two-stage, expendable configuration at first
- Launch options from Kourou (French Guiana) and SaxaVord (Scotland)
That capacity targets a specific niche: small satellite operators that need flexible schedules and tailored orbits, for instance for Earth observation, Internet of Things constellations or rapid technology demonstrations.
Latitude wants Zephyr to offer “small, simple, frequent” access to orbit, trimming the waiting times and complex logistics that plague shared launches.
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Backed by France’s “France 2030” investment plan, Latitude aims to scale up sharply. The company plans a 25,000 m² factory near Reims capable of building up to 50 Zephyr launchers per year by the end of the decade, if demand justifies it.
Inside the icy heart of a rocket: the turbopump
Behind every launch vehicle sits a set of components that never appear on glossy posters. Among the most critical is the turbopump, a compact machine that forces huge quantities of propellant into the engine at high pressure.
Why this hidden part matters
In Zephyr’s Navier engines, the turbopump sucks in the kerosene and liquid oxygen, compresses them, and feeds them to the combustion chamber with precise flow rates. Any instability can trigger dangerous oscillations or flameout.
Latitude entered a key phase of development in December 2025, when engineers began extensive tests of the oxygen turbopump with real liquid oxygen. Until then, they had focused on mechanical behaviour and simpler fluids. LOx testing represents a tougher challenge.
Liquid oxygen is stored at about –183 °C. At those temperatures, metal shrinks, oil thickens and tiny gas bubbles can tear hardware apart.
The battle against cavitation
The main enemy during cryogenic tests is cavitation: the formation of gas bubbles when pressure or temperature fluctuates inside the pump. Those bubbles collapse violently, damaging blades and inducing vibrations that can doom a mission.
Latitude’s engineers monitor a series of parameters in real time during each test run:
- flow stability through the pump
- outlet pressure and pressure spikes
- structural response to extreme cold
- sealing between liquid oxygen and lubricants
To cut risk, the team initially runs the LOx turbopump alone, without sending kerosene RP-1 through a second pump. Fewer variables mean a clearer understanding of what the oxygen hardware is doing, and faster iterations.
Test, tweak, repeat
Every hot-fire or flow test generates a flood of data: temperature gradients, transient regimes, vibration signatures, pressure drops and efficiency curves. Latitude’s Fluid & Propulsion Systems unit digests this information to refine geometry, materials and manufacturing processes.
On the back of those campaigns, the company has already frozen a “flight-ready” turbopump design, now being integrated directly into a Navier combustion chamber for full engine testing on a dedicated stand. That step moves Zephyr from component qualification towards full-system validation.
Latitude: from French start-up to industrial player
Latitude has grown quickly since its founding by Stanislas Maximin, Kevin Monvoisin and Ilan Saidi-Bekerman. What started as a small project is turning into a substantial industrial effort.
The company now counts around 180 employees and has raised roughly €50 million from investors and public schemes. It operates an 8-hectare test centre at Vatry in north-eastern France, where engines, turbopumps and structures undergo repeated stress campaigns.
Latitude’s strategy is to keep key technologies in-house, from 3D-printed engines to cryogenic turbopumps, rather than relying on a fragmented supply chain.
French institutions have helped. The national space agency CNES and the European Space Agency provided early technical support and funding. France 2030 money accelerated the industrialisation phase, including turbopump production lines and new test capabilities.
A crowded NewSpace ecosystem
Latitude is not alone. Around 150 private French space companies were active by 2023, supporting more than 2,000 jobs. Micro-launchers alone mobilise several hundred engineers and technicians, a figure that would have looked ambitious just a decade ago.
These players span multiple segments, as shown by a snapshot of key French NewSpace firms:
| Actor | Focus | Key activity |
| ArianeGroup / MaiaSpace | Reusable mini/micro launchers | Developing Maia, a reusable rocket intended to complement Ariane 6. |
| Latitude | Micro-launchers | Zephyr Launcher for small satellites and constellations. |
| HyPrSpace | Hybrid launchers | Baguette One, a hybrid-propulsion rocket for small payloads. |
| Exotrail | Electric propulsion, in-orbit services | Compact electric thrusters and manoeuvre services for satellites. |
| ThrustMe | Nanosatellite propulsion | Miniature electric thrusters widely used by global operators. |
| Loft Orbital | “Satellite as a service” | Shared satellite platforms hosting multiple payloads. |
| Kinéis | IoT constellations | Nanosatellites for global connected objects and data collection. |
| Prométhée Earth Intelligence | Earth observation | Low-cost, responsive imaging constellations. |
| The Exploration Company | Space transport, capsules | Reusable capsule concepts for orbital logistics. |
| Unseenlabs | Maritime surveillance | Radio-frequency detection of ships at sea. |
| Anywaves | Space antennas | Miniaturised antennas for telecoms and observation satellites. |
| Hemeria | Platforms and nanosats | Satellite buses and equipment for constellations. |
| Aldoria | Space traffic awareness | Tracking orbital debris and managing congestion. |
| Spartan Space | Lunar infrastructure | Concepts for habitats and systems on the Moon. |
State agencies act less like central planners and more like anchor customers and technology providers. CNES, for instance, shares hundreds of patents and software bricks that start-ups can reuse to build commercial products faster.
Why micro-launchers matter strategically
For France, micro-launchers carry more than commercial promise. They touch on national security and industrial autonomy. Without local rockets, military and civil operators must rely on foreign launchers, whose schedules and policies can shift overnight.
Dedicated small rockets also change how satellites are deployed. Rather than bundling dozens of payloads onto one big vehicle, operators can send up smaller groups or even single satellites on short notice. That flexibility helps intelligence, climate monitoring and emergency-response missions.
In a crisis, the ability to launch a few reconnaissance or communications satellites on demand can shape political and military options.
The business case is not guaranteed, though. Micro-launch providers compete fiercely on price, reliability and frequency. Many will fail. Latitude’s bet is that owning its critical technologies — like Navier engines and turbopumps — will keep costs under control and reduce delays when hardware needs redesign.
Key terms and practical scenarios
Cryogenics, LOx and cavitation in plain language
Liquid oxygen, or LOx, becomes liquid only when cooled to around –183 °C. At that point, it behaves like a very cold, very dense fluid. Rocket designers use it because it stores more oxygen in a smaller tank and burns cleanly with kerosene or hydrogen.
Cavitation happens when local pressure in the fluid drops so low that tiny vapour bubbles form. When those bubbles collapse, they create micro-shockwaves that chip away at metal surfaces. In a turbopump, that can eat into blades, shift clearances and eventually cause catastrophic failure.
To prevent that, engineers control pump speed, inlet pressure and temperature margins, and they shape the pump’s internal passages with high precision. Test stands often include transparent sections and dense instrumentation to watch for early warning signs.
How Zephyr might be used day to day
Imagine a European Earth-observation firm that needs to replace two ageing satellites in a 500-kilometre, sun-synchronous orbit. Instead of waiting a year for a slot as a secondary passenger on a heavy rocket, it books a dedicated Zephyr mission out of Kourou. The company chooses the exact orbital plane and timing, synchronised with its existing constellation.
Or picture a defence agency needing rapid launch of a surveillance CubeSat over a specific region. A micro-launcher gives planners a shorter response time, provided regulatory and range safety processes move just as quickly.
If Latitude reaches its target of dozens of rockets per year, such scenarios could become routine within France and across Europe. The country would move from watching the micro-launcher race to shaping its outcome, one icy turbopump test at a time.