Sapporo's Letara raises $16 million to scale hybrid rocket propulsion

Sapporo-based space tech startup Letara has raised ¥2.6 billion (approximately $16 million) to expand its hybrid propulsion technology. The funding marks a strategic pivot for the company as it moves from small satellite components toward larger rocket systems for the space, defense, and security sectors.

The pre-Series A round was co-led by Headline Asia, JIC Venture Growth Investment, and Incubate Fund. Letara, which was spun out of Hokkaido University in 2020 by co-CEOs Shota Hirai and Landon Thomas Kamps, utilizes a hybrid rocket design. This architecture combines a liquid oxidizer with solid fuel made from plastic-based materials, specifically HTPB.

A Strategic Shift in Scale

Until now, Letara has focused primarily on developing thrusters for small satellites. The company is now leveraging its new capital to scale this technology for larger applications. According to co-CEO Shota Hirai, the funding allows Letara to move beyond space-based demonstrations and explore a broader set of use cases across the space domain and the defense and security sectors.

This expansion is supported by existing commercial momentum. Letara has already secured orders from the Japanese government as well as various rocket and satellite companies, although the specific financial values of these contracts remain undisclosed.

The Domestic Aerospace Push

Letara's growth coincides with a broader strategic effort by the Japanese government to cultivate a robust domestic aerospace sector. This national push has been characterized by billions of dollars in investment and a loosening of restrictions regarding defense exports, creating a more favorable environment for private space firms.

In this landscape, Letara faces competition from other domestic players, such as Interstellar Technologies, as well as an increasingly crowded international field featuring firms from the U.S., Germany, Australia, Singapore, South Korea, and China.

Implications for Space Access

The shift toward large-scale rocket systems allows Letara to target high-value opportunities, including Low Earth Orbit (LEO) to Geostationary Orbit (GEO) transit and government defense contracts. The use of low-cost, plastic-based fuels is particularly significant; if successfully scaled, this approach could substantially lower the cost of space access and introduce more sustainable fuel options, such as the use of recycled plastics.

Future Outlook

As Letara enters the defense and security markets, the industry will be watching to see if its hybrid propulsion can maintain efficiency and reliability at a larger scale. While the company has proven its concept with smaller thrusters, the transition to full-scale rocket systems represents a significant engineering leap that will determine its ability to compete with established global aerospace giants.