The U.S. Navy and Marine Corps are seeking innovative solutions through the SBIR program to enhance the performance and reliability of compact rotary engines operating in marine environments. The primary objective is to develop advanced materials, coatings, and architectural modifications that address challenges such as corrosion, abrasive wear, seal degradation, and heat management, which are exacerbated by high humidity and salt exposure. These rotary engines are crucial for Unmanned Aircraft Systems (UAS) and other compact vehicles requiring efficient and durable power sources. Interested parties should prepare to submit proposals by May 21, 2025, with the opportunity opening on April 23, 2025, and further details available at the provided source link.