Low-Erosion and Affordable Nozzles for Advanced Air-to-Air Missiles Navy SBIR FY2012.1 Sol No.: Navy SBIR FY2012.1 Topic No.: N121-014 Topic Title: Low-Erosion and Affordable Nozzles for Advanced Air-to-Air Missiles Proposal No.: N121-014-0094 Firm: UES, Inc. 4401 Dayton-Xenia Road Dayton, Ohio 45432-1894 Contact: HeeDong Lee Phone: (937) 426-6900 Web Site: www.ues.com Abstract: This Phase I SBIR program seeks a new fabrication method to produce ultra high temperature Ta-Hf-C-based composites (UHTC) with an outstanding oxidation resistance, as well as stronger (> 100 kpsi) and tougher (> 10 MPa,cm), for use as the advanced solid rocket motor applications. UES will apply a novel �Top Down�" approach to control the microstructures of the composites. This approach will produce a very unique grain structure that can offer high strength, high fracture toughness, and high oxidation resistance. Hot-pressing will be used as a means for densification during the Phase I feasibility study. In the Phase II work, a sinter/HIP process will be explored for near-net shape fabrication. Benefits: The successful completion of the Phase I program will provide the foundation needed to produce an oxidation resistant, strong and tough UHTC. In addition, a novel �Top Down�" approach will be proven to be a robust production technique for large quantities of powder. Examples of potential applications are rocket engines for space-based systems and for various DoD applications including all rocket nozzles, TPS for hypersonic flight, and other ground-based missile interceptors. Return