Ursa Major and the Air Force Research Laboratory successfully completed a flight demonstration of the Draper liquid rocket engine on January 27, 2026, using the Affordable Rapid Missile Demonstrator. The project, which progressed from contract to flight-ready status in eight months, utilizes additive manufacturing to produce complex engine components for mass-producible strike capabilities. Ursa Major, headquartered in Colorado with additional facilities in Youngstown, Ohio, previously secured $100 million in Series E funding in November 2025 to scale its propulsion production. CEO Chris Spagnoletti confirmed the engine is throttleable and storable, leveraging design heritage from the company's Hadley liquid rocket engine.

This demonstration highlights the integration of metal additive manufacturing into defense supply chains to reduce lead times for high-performance propulsion systems. By utilizing 3D printing to consolidate parts and accelerate iteration cycles, Ursa Major competes directly with traditional aerospace manufacturers that rely on legacy casting and machining processes. The ability to move from design to flight in under a year addresses a critical bottleneck in the defense industrial base, where rapid acquisition models are increasingly prioritized over long-cycle development programs. This shift reflects a broader trend of utilizing AM to achieve cost-effective scalability in the hypersonic and missile propulsion sectors.

For Ursa Major, the immediate priority is transitioning from successful flight demonstration to consistent, high-rate production of the Draper engine. Buyers and defense stakeholders should evaluate the repeatability of these 3D printed components under sustained operational loads to ensure they meet stringent aerospace certification standards. Future success depends on maintaining quality control across the Youngstown manufacturing site while scaling output to meet the Air Force's demand for affordable, mass-producible deterrents.