NASA Tech Needs

Intelligent Integrated System Health Management

Stennis Space Center is NASA’s primary center for rocket engine testing. The facilities include large test stands built for the Apollo Program that are being used to test Space Shuttle Main Engines, smaller test stands for smaller rockets and components, and a new test stand, the A3 Test Stand with capability to simulate high-altitude conditions. All test stands are complex systems that provide oxidizer, fuel, and purge fluids, often at extreme pressures and high velocities. The test stand systems must also manage cryogenic temperatures from liquid oxygen, liquid hydrogen, and liquid nitrogen, as well as high temperatures from rocket plumes. Further more, test stands include hundreds of sensors, and accurate and reliable measurement systems to obtain data that can be used in the design, validation, and certification of engines and components. Rocket engine testing is a complex and potentially hazardous operation, not unlike a spacecraft launch. Protocols and processes are followed in order to ensure readiness to test. In order to improve efficiencies and safety in test stand operations, it is crucial to develop systems that can help provide comprehensive and continuous vigilance of each element on the test stand. An ISHM system will provide this capability. Technology Needs Integrated System Health Management (ISHM) capability is fundamentally linked to the management of data, information, and knowledge (DIaK) to determine the health of a system. It is similar to having a team of experts who are all individually and collectively observing and analyzing a complex system, and communicating effectively with each other in order to arrive to an accurate and reliable assessment of its health. ISHM is a capability that is achieved by integrating DIaK that might be distributed throughout the system elements. DIaK must be available to any element of a system at the right time and in accordance with a meaningful context. ISHM Functional Capability Level (FCL) is measured by how well a system performs the following functions: (1) detect anomalies, (2) diagnose causes, (3) predict future anomalies/ failures, and (4) provide users with an integrated awareness about the condition of every element in the system and guide user decisions. The primary technologies that enable achievement of ISHM capability include: Algorithms/approaches/methodologies for anomaly detection. Approaches and methodologies for root-cause analysis to diagnose causes of anomalies. Approaches and methodologies for prediction of future anomalies. Architectures/taxonomies/ontologies that enable management of DIaK – where management implies distributed storage, sharing, processing, maintenance, configuration, and evolution. Software environments that integrate contributing technologies in a modular plug-and-play fashion, adhering to a defined architecture/ taxonomy/ontology. Standards that allow plug and play and interoperability among elements of an ISHM system. User interfaces to provide the user with integrated system awareness. Developing solutions to the primary technologies must also consider intelligence and integration. In telligence implies that a credible ISHM capability that allows systematic augmentation of that capability must be a knowledgebased system. implies that inferences and decisions about the health of any element must incorporate and reason using other elements and physical phenomena through out the system. More Information For additional information, or to discuss ideas about this concept, contact John Lansaw of Stennis Space Center at 228-688- 1962 or visit nasa@techbriefs.com.

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NASA Engineering Polymer Development Needs

There is increasing interest in lightweight and ultra-lightweight structural concepts and materials within NASA’s exploration mission and as part of efforts to develop “green” aeronautics options. Polymers and polymeric composites are important elements in design and construction of the nation’s future aircraft and spacecraft. Langley Research Center (LaRC) in particular has very active programs in development of advanced engineering polymers for use as structural components, as films or coatings, or for high-temperature or acoustic insulation.

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Technologies to Protect Crop Plants From Pesticide Damage

A company seeks technologies or “safeners” that minimize the negative impact of pesticides on crops, such as physiological or cosmetic damage. The safener must have utility on a broad combination of crops, result in no inhibition effect or other performance consequences on the active ingredient, and have a minimum two-year shelf life under varying temperatures. Possible treatments include seed coating, pharma or cosmetic ingredients, or co-formulation with an existing product. Respond to this TechNeed at: www.techbriefs.com/tn/200910c.html Email: nasatech@yet2.com Phone: 781-972-0600

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Small, Mechanical Valve for Use With Propellant Gas

A valve technology is sought that can be used with a propellant- gas-based device aimed at the consumer goods industry. The valve will be used with a canister of propellant gas, in a handheld consumer device, and needs to be small, lightweight, and low-cost. The size should be in the millimeter to centimeter range, weigh less than 5 grams, require no priming, be air-actuated, allow a flow rate between 25 mL/sec and 90 mL/sec, and be manufactured from materials that meet European Union or FDA requirements. Respond to this TechNeed at: www.techbriefs.com/tn/200910d.html Email: nasatech@yet2.com Phone: 781-972-0600

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Technology to Deposit Spray on the Underside of Crop Plants

A company seeks a technology to enable sprayable fungicides and a new additive that is compatible with current insecticides and fungicides. The technology must treat both sides of the leaves uniformly. Moreover, since spraying equipment represents a major time and cost investment from growers, the growers’ existing spraying practices must not be changed with new equipment or retrofits. The technology should not cause negative impact on the treatment product itself, or cause crop injury. Respond to this TechNeed at: www.techbriefs.com/tn/200909c.html Email: nasatech@yet2.com Phone: 781-972-0600

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Fast-Acting, Broad-Spectrum Disinfectant

A broad-spectrum pathogen disinfectant is sought that can kill Clostridium difficile (spore phase) in less than five minutes of contact time; preferably within a minute or less. A formulation that requires longer than a minute is also of interest if it can be formulated to provide ongoing protection. Ideally, the proposed solution will be “green”; that is, environmentally responsible in its formulation, manufacture, and effect on the environment after use. Metals such as copper, zinc, or silver ions cannot be part of the formulation. Respond to this TechNeed at: www.techbriefs.com/tn/200909d.html Email: nasatech@yet2.com Phone: 781-972-0600

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Hydrogen Reclamation and Reutilization

John C. Stennis Space Center (SSC) provides rocket engine propulsion testing for NASA’s space programs. Since the development of the space shuttle, every Space Shuttle Main Engine (SSME) has undergone acceptance testing at SSC before going to Kennedy Space Center (KSC) for integration into the space shuttle. The SSME is a large cryogenic rocket engine that uses Liquid Hydrogen (LH2) as the fuel. As NASA moves to the new ARES V launch system, the main engines on the new vehicle, as well as the upper stage engine, are currently baselined to be cryogenic rocket engines that will also use LH2. The main rocket engines for the ARES V will be larger than the SSME, while the upper-stage engine will be approximately half that size. As a result, significant quantities of hydrogen will be required during the development, testing, and operation of these rocket engines.

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