DIRECT TO PHASE II: Highly Loaded Grain in 2.75" Form Factor
SBIR Opportunity Analysis
The U.S. Navy, through a Direct to Phase II SBIR topic, is seeking to advance highly loaded grain propulsion technology in a 2.75-inch Mk66 rocket motor to increase range and mature the technology for military use. The work calls for an initial concept design and subsequent fabrication and testing of a prototype that includes the ballistics, insulation, nozzle, and igniter, followed by item-under-test evaluation and static firing. Key requirements include use of the Mk 66 case, CLWire ballistic software, a target of 30% higher total impulse, min-smoke or reduced-smoke propellant performance, and compatibility with existing rocket motor materials while meeting relevant thermal and mechanical environments. Offerors must provide Phase I-type feasibility documentation showing prior non-SBIR/STTR R&D, and the government will provide the motor case, HLG materials, and technical support. The application deadline is June 3, 2026 at 4:00 PM UTC.