Japanese Space Startup Letara Expands Beyond Satellite Thrusters with $16M
Japan is making a massive push to build its domestic space industry, pouring billions into development and easing defense export restrictions. This national strategy aims to create a homegrown aerospace sector with startups that can compete globally.
Sapporo-based Letara is perfectly positioned to capitalize on this momentum. The company, which develops hybrid rocket systems for spacecraft, has just secured ¥2.6 billion (~$16 million) in new funding to expand its ambitions far beyond its original focus on small satellite thrusters.
Letara’s Plan for Hybrid Rocket Systems
The fresh capital injection allows Letara to develop large rocket systems for space, defense, and security markets. The round was co-led by Headline Asia, JIC Venture Growth Investment, and Incubate Fund, with strategic participation from NES Corporation, Toyoda Gosei, and Frontier Innovations—an investment fund backed by JAXA, Japan’s space agency.
“With this round, we will go beyond demonstrating that thruster in space,” said co-CEO Shota Hirai. “We plan to explore a much wider set of use cases across both the space domain and the defense and security domain, and to develop and propose hybrid rocket systems suited to each of them.”
Solving the Hybrid Rocket Challenge
Letara’s core technology addresses three longstanding problems that have limited hybrid propulsion: generating sufficient thrust, maintaining consistent performance, and controlling combustion.
The company’s hybrid rocket design keeps solid fuel separate from the liquid oxidizer. Rather than using expensive paraffin wax, Letara employs inexpensive, widely available materials like plastic and rubber as solid fuel. Their proprietary manufacturing process mixes, shapes, and compresses these materials to ensure reliable ignition and consistent burning.
The result is a system that delivers more thrust with less waste than traditional hybrid rockets.
Market Opportunity and Competition
The global hybrid rocket propulsion market presents significant opportunity. Projections show it expanding from $848 million in 2024 to $2.6 billion by 2032—a compound annual growth rate of 15%.
However, Letara faces competition from several players advancing hybrid rocket technology, including Japan’s Interstellar Technologies, China’s Galactic Energy, South Korea’s InnoSpace, Singapore’s Equatorial Space, Germany’s HyImpulse, and Australia’s Gilmour Space.
From Academic Roots to Commercial Ambition
Letara emerged from Hokkaido University, where co-CEOs Landon Thomas Kamps and Shota Hirai researched rocket propulsion. They believed hybrid rockets’ relative safety and simplicity could make them useful beyond traditional space programs as private companies entered the industry.
The company spun out of Hokkaido University in 2020, initially focused on satellite thrusters. Since then, the global propulsion market has become increasingly crowded as demand for launch and defense capabilities grows.
Now, Letara is actively pursuing defense contracts and launch services, positioning itself to compete with Japanese startups and international players.
“Large spacecraft need high thrust propulsion as well, especially when they need to go from LEO to GEO and get through the high radiation Van Allen belt quickly,” said Hirai. “And of course, there is insane growing demand for launch vehicles.”
Target Markets and Next Milestones
Letara targets satellite makers, operators, launch companies, and governments. The company sees commercial satellites as its biggest market for in-space propulsion, while government demand for hybrid rocket systems grows, particularly in Japan.
The company has already secured orders from rocket and satellite companies as well as the Japanese government, though it declined to disclose contract values.
A key upcoming milestone is an in-orbit firing test with an overseas partner, which Letara views as critical for commercialization. The company also needs to establish repeatable manufacturing processes with quality controls and a reliable supply chain for fuel and tanks to support production at scale.
Looking ahead, Letara noted that using recycled plastic as fuel is “very much a possibility” with its hybrid technology, though more testing and development would be required.
With fresh funding and expanded ambitions, Letara aims to become a significant player in the evolving global space economy.
