Magnetically Coupled Helium Recirculation Fan (MCHRF) Navy SBIR FY2009.1 Sol No.: Navy SBIR FY2009.1 Topic No.: N091-054 Topic Title: Magnetically Coupled Helium Recirculation Fan (MCHRF) Proposal No.: N091-054-0011 Firm: Orbital Technologies Corporation (ORBITEC) Space Center, 1212 Fourier Drive Madison, Wisconsin 53717-1961 Contact: Chris St.Clair Phone: (608) 229-2727 Web Site: www.orbitec.com Abstract: ORBITEC proposes to develop the Magnetically Coupled Helium Recirculation Fan (MCHRF), a fan for the recirculation of cryogenic helium gas for shipboard High-Temperature Superconductor Deguassing (HTSDG) systems. The MCHRF will eliminate the mechanical penetration required for the recirculation function by driving the fan with magnetic forces from a tightly packaged integral motor assembly contained entirely within the vacuum space. This will simplify the design of the associated insulation system, eliminate the potential for any gas leaks along a shaft penetration, and minimize the heat load associated with the fan. Because of these simplifications, it will also dramatically reduce the cost associated with the recirculation function. Benefits: The Navy will be the initial primary customer for the MCHRF. Assuming that the HTSDG program is successful in revolutionizing the technology used to degauss Navy ships, ORBITEC anticipates a significant demand for MCHRF units as the new systems are deployed widely. Beyond the specific Navy application, the MCHRF technology could prove useful for other applications requiring the recirculation of a low-density cryogenic coolant. Obvious examples include other emerging technologies which require the use of high-temperature superconductors, and which will therefore need some type of circulating coolant. Other examples could include specialized laboratory or research applications. Return