Highly Compact Supersonic Cruise Missile (SSCM) Engine Inlet
Navy SBIR FY2012.1


Sol No.: Navy SBIR FY2012.1
Topic No.: N121-028
Topic Title: Highly Compact Supersonic Cruise Missile (SSCM) Engine Inlet
Proposal No.: N121-028-0013
Firm: Combustion Research and Flow Technology, Inc.
6210 Kellers Church Road
Pipersville, Pennsylvania 18947-1020
Contact: Neeraj Sinha
Phone: (215) 766-1520
Web Site: www.craft-tech.com
Abstract: As air vehicle speeds increase, air breathing engine and inlet technology follow through concurrent supersonic performance requirements. The recent ability to build smaller supersonic engines has established a void in small air vehicle inlet capability. A solution to decrease the overall footprint of supersonic inlets within next-generation Supersonic Cruise Missiles (SSCMs) is desired. SSCMs, like the Next Generation TOMAHAWK (NGT), are under consideration in response to Prompt Global Strike (PGS) requirements, which characterize engagement time with Time-Critical-Targets (TCTs). Conventional inlet design is limited to classical shapes for the supersonic portion of the inlet (i.e., rectangular or half/full axisymmetric) due to the use of semi-empirical codes that are restricted to this limited set of possible shapes; and, are limited to lofting the subsonic diffuser downstream of the terminal shock to meet the required average Mach number at the compressor face. CRAFT Tech will address the limitations of conventional design techniques with an innovative three-dimension design methodology based on computational fluid dynamics and multi-variant design optimization that will produce inlets that meet more stringent requirements for compact designs.
Benefits: The tool being developed under this program combines high fidelity CFD models with design optimization to produce a design environment that can address many more constraints and produce a design with a higher level of confidence in predicted performance and operability. Specifically being developed for high speed missile inlets, an area that has significant interest, the framework lends itself to broader fluid dynamic components like fuel injectors, combustor shapes, and nozzles. The commercialization plan is to market the tool and / or our services to DoD programs and contractors that are engaged in high speed missile development. The successful completion of this program will provide demonstrated capability that will be directly applicable to these activities. Moving beyond the missile community, the design environment will be marketed to a broader fluid dynamic component community that has need for enhanced design capability.

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