99--TECHNOLOGY TRANSFER OPPORTUNITY - ACTIVE FLOW EFFECTORS FOR NOISE ANDSEPARATION CONTROL

NASA Langley Research Center in Hampton, VA solicits interest from companiesinterested in obtaining license rights to commercialize, manufacture and market thefollowing technology. License rights may be issued on an exclusive or nonexclusive basisand may include specific fields of use. THE TECHNOLOGY: NASA has developed a novel approach for active jet nozzle flow effectors, or chevrons,based upon shape memory alloy hybrid composite (SMAHC) technology. The concept involvesembedding pre-strained SMA actuators on one side of the chevron neutral axis in order togenerate a thermal moment and deflect the structure out of plane when heated. The forcedeveloped in the host structure during deflection and the aerodynamic load are used forreturning the structure to the retracted position. The NASA chevron design is highlyscalable and versatile, and easily affords active and/or autonomous (environmental)control. Prototype chevrons at 1:9 scale have been built and tested, including thermalcycling tests, repeatability tests, and tests with representative flow conditions at NASALangley. All aspects of the chevron performance were found to be very repeatable,including closed loop performance of the chevron tip to prescribed positions whileimmersing into and retracting from the flow.To express interest in this opportunity, please respond to Sean Sullivan at: NASA LangleyResearch Center, 17 West Taylor St., Mail Stop 218, Building 1212, Room 110 Hampton,Virginia, E-mail: [email protected], or phone: 757-864-5055. Please indicate thedate and title of the FBO notice and include your company and contact information.Contracting Office Address: NASA Langley Research Center17 West Taylor Street, Mail Stop 218Building 1212, Room 110Hampton, VA 23689-2199Primary Point of Contact: Sean SullivanNASA Langley Research [email protected]: 757-864-5055