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), a combined-cycle engine that takes off in jet mode, seamlessly transitions into ramjet/scramjet operation to reach hypersonic speeds, and then employs rocket mode to break into space.
A conventional rocket does not utilize atmospheric air and consumes most of its fuel during the initial ascent phase, thus requiring massive discarded boosters. In contrast, our technology begins as airbreathing, enabling a far more efficient initial climb to altitude and velocity without discarded boosters, significantly reducing mission cost and logistics.
Redefining access to space
Designed for dynamic versatility, APEX is at the core of our plan to redefine how we access space.
We envision a truly reusable spaceplane capable of taking off from a runway, reaching hypersonic speeds in airbreathing mode, and then transitioning seamlessly into rocket mode to exit the atmosphere — all using the same engine.
This approach will not only significantly 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.
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