Anduril, Raytheon Complete Static Fire Test of Highly Loaded Grain Solid Rocket Motor

Anduril Industries and Raytheon completed a static fire test of an advanced solid rocket motor under contract with the Air Force Research Laboratory Munitions Directorate.

The test validated a heavy-wall motor built by Anduril using a highly loaded grain (HLG) design derived from technology at Naval Air Weapons Station China Lake.

The HLG configuration increases propellant volume inside the motor case, raising specific impulse and overall motor performance; those gains translate into longer range for air-to-air weapons.

Raytheon’s Advanced Technology team provided technical oversight during development and testing, and the program ran in partnership with AFRL’s Munitions Directorate.

Anduril said the static fire supports efforts to rebuild U.S. solid rocket motor manufacturing capacity after opening a full-scale SRM production facility in Mississippi in August 2025, backed by more than $75 million in private funding.

The validated HLG design can enable air-launched weapons with greater range and sustained performance; the companies and AFRL did not release production timelines, quantities, or specific weapon integration details.