Letara raises $16 million pre-Series A to build hybrid rocket engines
Letara
Japanese propulsion startup Letara closed a ¥2.6 billion ($16 million) pre-Series A round for its hybrid rocket engine technology.
what happened
Letara, a Hokkaido University spinoff, closed a ¥2.6 billion ($16 million) pre-Series A round led by Headline Asia, JIC Venture Growth Investments, and Incubate Fund, with additional Japanese and US investors including SMBC Venture Capital, Mitsubishi UFJ Capital, and Mitsui Sumitomo Insurance Venture Capital, per Payload. Letara builds hybrid engines using plastic-based HTPB fuel and an oxidizer, developing both spacecraft thrusters and a scalable launch-class engine from the same combustion core.
why it matters
Letara is one of several Japanese propulsion startups chasing cheaper, safer engine technology for both smallsat launch vehicles and in-space maneuvering, an area where launch providers and satellite operators alike are short on domestic supply options outside the US.
for who
Smallsat launch vehicle developers and satellite propulsion buyers
signal-to-noise
quick facts
- Companies
- Letara
- Category
- financial
- Impact
- notable
- SNR
- 4 / 5
- Event date
- 2026-08-20
- Published
- 2026-08-21 17:27 UTC