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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Project Closeout Report: The Surface Chemistry of Plutonium Oxide for Waste Pretreatment
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A correlation-based inversion approach for satellite-borne aerosol remote sensing
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Hermes Environment Risk Mitigation Executive System (HERMES): Applications for Safe Autonomous Aircraft Operations
This presentation discusses use of Core Flight Systems in NASA Langley Research Center's drone flight test environment for autonomy algorithms research.
Innovative 3D-printed hybrid cooling systems for thermal management of lithium-ion pouch cells
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Hygrothermal aging effects & degradation pathways of acrylate-based adhesive co-polymers for applications in high-performance flat-flex cables
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Center for High-Efficiency Electrical Technologies for Aircraft: Phase I Final Report
Under the University Leadership Initiative (ULI), the Center for High-Efficiency for Electrical Technologies (CHEETA) was established to develop and mature early-stage technologies pertaining to hydrogen-electric power and energy systems for aircraft. In particular, integration of these technologies on an aircraft system is envisioned to leverage the high specific energy content of liquid hydrogen (LH2) with fuel cell energy conversion and an electrically driven ducted fan system to provide an ultra-efficient propulsion drivetrain. For this concept, the LH2 system is not just used as an energy storage mechanism, but also as a cryogen to enable highly efficient superconducting electric systems. The end result of this concept is an integrated aircraft system with a quiet, efficient propulsion architecture that produces zero CO2, NOx, SOx, and particulate matter emissions at the vehicle level.
Separator development for a heat sterilizable battery Final summary progress report, 1 May 1966 - 15 Mar. 1967
Development and testing of vivyl polymer separator materials for sterilized silver-zinc secondary battery
Utilization of Battery Electric Buses for the Resiliency of Islanded Microgrids
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New X-ray Light Sources, Innovative Pressure Platforms, and Advances in AI: Opportunities for High-Pressure Research
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Bridging Fusion Energy and Fission Energy: Synergistic Supply Chains for Fuel and Materials
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The role of momentum transfer in the detachment front response to power transients for reactor scale tokamaks
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Mesh-based multiphysics coupling acceleration for fusion neutronics through clustering for fusion blanket applications
Accurate modeling of particle transport within fusion blankets is essential for predicting performance metrics such as heat deposition and the tritium breeding ratio (TBR). However, high-fidelity coupling of thermal fluids from computational fluid dynamics (CFD) to neutronics simulations often incurs significant computational costs due to the complexity of surface intersection calculations in Monte Carlo codes. This paper presents an accelerated multiphysics coupling method for neutronics that utilizes hierarchical agglomerative clustering to map complex material property distributions to a neutronics model. Implemented within the fusion reactor design and assessment (FREDA) framework, the method leverages existing Python packages to automate the creation of clustered geometries for OpenMC. The approach is demonstrated on a sector model of an ARC-class tokamak with an immersion molten salt blanket, and an simple geometry with varying isotopic concentrations. Results show that the clustering method significantly reduces computational burden without compromising fidelity, providing a foundation for agile iteration of neutronics simulations involving multiple coupled material properties.
Air Force standards for nickel hydrogen battery
The topics discussed are presented in viewgraph form and include Air Force nickel hydrogen standardization goals, philosophy, project outline, cell level standardization, battery level standardization, and schedule.
Universality classes of thermalization for mesoscopic Floquet systems
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Tensor Methods A Unified and Interpretable Approach for Material Design
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Development Status of 3 Battery Systems for the X-38 Crew Return Vehicle
This viewgraph presentation gives an overview of the development status of three battery systems for the X-38 crew return vehicle. Details are given on the design features, the lithium battery module, PCM composite heat sinks, carbon fibercore blocks for Qual battery, battery module base housing, heat sink characteristics, and battery qualifications.