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Juno Propulsion Inc. Secures $1.4

Recently funded · $1.4M Pre-seedTechnology, Information and MediaUSView source

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Juno Propulsion Inc., a startup focused on next-generation rocket propulsion, has secured $1.4M in pre-seed funding. The company is developing systems that leverage rotating detonation combustion, an advanced method for rocket propulsion.

The investment round drew capital from a diverse group of backers, including SOSV, Hypernova, Leslie Ventures, Activate, Collab Fund, Safar Partners, and Cape Fear Ventures. This early-stage funding will support Juno Propulsion's ongoing work in the specialized field of advanced rocket engine technology.

Juno Propulsion announced a $1.4M pre-seed investment round today to fund the completion of its first flight-ready rotating detonation engine (RDE)—called Project Iris—ahead of its inaugural demo mission in 2027.

SOSV led the round, which included participation from Hypernova, Leslie Ventures, Activate, Collab Fund, Safar Partners, and Cape Fear Ventures. Better than best: Juno plans to use the funds to complete development of its Iris engine. Iris is scheduled to fly as a hosted payload onboard a Momentus satellite bus in Q1 2027, where the engine is expected to be the first commercial RDE system to prope

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