Technology
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Why Hybrid Propulsion?
The space industry is changing fast. Two major trends are shaping its future:
‍First, launch is no longer just for national governments. Private companies like SpaceX have dramatically lowered the cost of reaching orbit. Now, countries around the world are racing to build their own rockets, recognizing space access as a strategic priority. The demand for safe, fast, and affordable launch has never been higher.
But there’s a problem: rocket engines are still risky and outdated. Most use either solid fuel, which can explode if triggered accidentally, or complex liquid systems that are expensive, heavy, and prone to leaks and combustion. These legacy engines still suffer regular failures.
Second, the cost of launching satellites has dropped—and launches have skyrocketed. Tens of thousands of satellites are planned over the coming decade. Each one needs propulsion to get to its correct orbit, stay there, avoid space debris, and safely deorbit. Electric propulsion is efficient, but far too slow for many real-world needs.
Chemical propulsion is still essential for speed, responsiveness, and control. But here too, current systems have big problems. Most use dangerous toxic fuel or bulky, complex liquid bipropellant systems that drive up cost and size.
Letara’s Hybrid Solution
Letara builds hybrid chemical propulsion systems that solve the problems of both traditional rocket and spacecraft engines.Hybrid propulsion is the subcategory of chemical propulsion that utilizes the combustion of a solid (state) fuel, and liquid (or gaseous state) oxidizer for creating a propulsive force. Since solid fuels are inherently non-toxic, non-flammable, and non-explosive, hybrid propulsion is the safest type of chemical propulsion.

We use plastic as fuel, making our systems dramatically safer, simpler, and more affordable.
Our patented ignition system delivers stable, high thrust performance, even in space, using low power and repeatable restarts. And because our fuel can be 3D printed into custom shapes, development and mass production are fast and flexible.
Letara’s engines combine the thrust of chemical propulsion with the safety and scalability the industry needs.
They are built for both launch vehicles and in-space platforms—from CubeSats to large satellites and beyond.
This is not a small improvement.
It is a step change in how we power movement in space.
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Camui Technology
At the core of Letara’s propulsion innovation is Camui rocket engine technology, a patented grain design that maximizes combustion efficiency in hybrid rocket engines. By leveraging alternating fuel segments and oxidizer ports, this patent enables stable thrust, improved scalability, and enhanced safety which make it ideal for both atmospheric and in-space applications.
What Makes Letara’s Technology Unique
We hold core patents and deep expertise in the critical technologies that make hybrid propulsion truly viable:
Ignition SystemÂ
Enables safe, repeatable engine start/stop with lower power and throttling.
Regenerative cooling
Support long, stable burns without overheating and nozzle erosion.
Scalability and Flexibility
Our engines can be integrated onto cubesats, OTVs, or full launch systems.

