Ursa Major Expands U.S. Solid Rocket Motor Testing with New Colorado Facility

U.S. propulsion startup Ursa Major has inaugurated a new solid rocket motor (SRM) test facility in Colorado as part of a broader effort to revitalize the American defense industrial base for tactical missile and hypersonic weapon systems. The site will support development and qualification of next-generation SRMs using additive manufacturing and rapid prototyping techniques.

Strategic Context: Propulsion Bottlenecks in the U.S. Missile Ecosystem

The opening of Ursa Major’s new test site comes amid growing concern over the limited number of domestic suppliers capable of producing tactical-scale solid rocket motors—critical components for air-to-air missiles, surface-to-air interceptors, cruise missiles, loitering munitions, and hypersonic glide vehicles.

For decades, the U.S. Department of Defense (DoD) relied heavily on two prime SRM producers—Northrop Grumman (via its acquisition of Orbital ATK) and Aerojet Rocketdyne (now part of L3Harris). This duopoly has struggled to meet increasing demand from programs like JAGM (Joint Air-to-Ground Missile), GMLRS (Guided Multiple Launch Rocket System), PAC-3 MSE interceptor upgrades, and emerging hypersonic efforts such as ARRW and CPS.

The 2022 National Defense Industrial Strategy explicitly identified propulsion as a critical bottleneck area requiring urgent investment to diversify suppliers and expand capacity. In this context, Ursa Major’s expansion represents both an industrial and strategic milestone.

Facility Overview: Capabilities at the Colorado Test Site

The new test complex is located near Ursa Major’s headquarters in Berthoud, Colorado. According to company statements and public records reviewed by MiliVox Editorial Engine, the facility includes:

Dedicated horizontal static-fire test stands for tactical-class SRMs
Instrumentation for high-speed pressure/temperature telemetry
Ammunition storage bunkers compliant with DoD Explosives Safety Board (DDESB) standards
On-site integration bays for rapid motor assembly and nozzle installation

The site is designed to support both subscale prototype testing as well as full-scale static fires up to ~40 kN thrust class—sufficient for most short- to medium-range missile applications.

Ursa Major’s Approach: Additive Manufacturing Meets Tactical Propulsion

Unlike legacy prime contractors that rely on traditional cast-cure methods for SRMs—a process often taking months—Ursa Major leverages additive manufacturing (AM) techniques developed during its liquid propulsion programs (e.g., Hadley engine).

This includes selective laser sintering (SLS) for nozzle components and composite filament winding for motor casings. The company claims these methods reduce lead times by up to 80% while enabling design iterations within weeks rather than quarters.

The firm’s “Lynx” solid rocket motor family is reportedly modular across thrust classes ranging from ~5 kN up to ~40 kN. While specific customers have not been disclosed publicly due to security restrictions, industry analysts believe early contracts may support U.S. Army or Air Force Research Laboratory (AFRL) prototyping efforts tied to loitering munitions or counter-UAS interceptors.

Implications for Hypersonics and Advanced Missiles

The timing of this facility aligns with renewed Pentagon focus on fielding operational hypersonic weapons by FY2027 under programs like the Navy’s Conventional Prompt Strike (CPS), Army’s Long Range Hypersonic Weapon (LRHW), and DARPA’s Glide Breaker interceptor initiative.

While most current hypersonic boost stages use large-diameter solid boosters made by legacy primes, there is growing interest in smaller scale tactical hypersonics—such as air-launched glide vehicles or hybrid-cycle scramjet demonstrators—that require compact high-thrust motors with fast production cycles.

If validated through testing at the new site, Ursa Major’s Lynx series could serve as booster stages or kick motors in such architectures—especially where rapid iteration or low-rate initial production is needed outside traditional supply chains.

Industry Impact: Diversifying the Defense Propulsion Base

The addition of Ursa Major as a qualified SRM producer would represent one of the first credible entrants into this space in over two decades—a significant development given recent Congressional scrutiny over defense supplier consolidation.

This move echoes broader DoD efforts under initiatives like DIU’s Blue UAS framework or AFWERX Prime programs that aim to derisk non-traditional vendors through government-backed testing infrastructure.

If successful in scaling production beyond R&D quantities—and passing relevant MIL-STD qualification thresholds—Ursa Major could become a third pillar alongside Northrop Grumman and L3Harris Aerojet in supporting future missile stockpile replenishment strategies under contested logistics scenarios such as Indo-Pacific operations.