About us
Lexion is a mechanical and aerospace engineering R&D company based in Greece, driven by a philosophy of free thinking, creativity, and a deep commitment to redefining what is possible.
We approach every challenge through the lens of fundamental physics and core engineering logic to create radically innovative designs. By working from first principles, we engineer novel, tailored solutions that are not bound by existing technologies and carry disruptive potential across both emerging and established industries.
While Lexion engages in a broad spectrum of cutting-edge technologies, our primary focus is on developing next-generation hypersonic propulsion systems — an initiative supported by the European Space Agency through its Business Incubation Centre.
Proprietary Technology
The crown jewel of Lexion is the APEX (Airbreathing Pulsed EXplosions) engine, a fundamentally new energy conversion system that utilizes detonation events. It marks a paradigm shift in high-power applications, offering both rapid response and exceptional adaptability across a wide range of operating conditions. Designed for dynamic versatility, APEX is at the core of our vision to redefine how we access space.
We envision a truly reusable spaceplane capable of reaching hypersonic speed in airbreathing mode, then transitioning seamlessly into rocket mode to exit the atmosphere. This approach will not only drastically reduce the cost per kilogram to orbit, but also enable a new kind of launch infrastructure that more closely resembles an airport, allowing for frequent, flexible, and low-complexity operations.
Emerging Sectors
Our development strategy for the APEX engine is centered around spaceplane propulsion, while also exploring the potential of the same core technology across selected sectors.
Spaceplane
Conventional rockets do not utilize atmospheric air, so they require multiple stages to reach orbit. An APEX-powered spaceplane performs much of its ascent in airbreathing mode and reaches orbit in a single, fully reusable stage — radically reducing cost of satellite launches and enabling flexible operations.
Maritime & Shipping
As environmental regulations tighten in ports, vessels increasingly rely on a secondary low-emission system alongside a conventional combustion engine for cruising. An APEX-based propulsion system replaces this dual setup with a single adaptive engine that delivers full power during ocean cruise, while seamlessly switching to a fully clean operating mode upon entering regulated zones.
VTOL Aircraft
In the rapidly expanding VTOL sector, electric propulsion is often favored for its responsiveness. However, limitations such as low energy density and long recharge times become evident as aircraft scale up. APEX is well-suited for aerial platforms like drones and air taxis, as it combines dynamic control with the power and endurance of combustion.
Energy Cogeneration
APEX can serve as the core of next-generation cogeneration units that utilize hydrogen produced via renewable sources and stored during periods of energy surplus. Its fast response and broad power range make it ideal for re-injecting electricity into the grid during peak demand, while simultaneously generating hot water or steam for industrial or other uses—maximizing overall efficiency.
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