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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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Primary zinc-silver oxide battery - separator material, construction, and prototype cell evaluation
Effect of radiation on nickel-cadmium battery electrodes
Test of electrochemical cell and local action mechanisms of wet cell battery for space probe applications
Dry tape battery concept - cathode and anode research, energy densities, tape cell preparation, and supporting research
Silver-cadmium secondary battery energy storage system using vented cells for manned orbital spacecraft
Fabrication and test of polyethylene base material for heat sterilization resistance and for battery separators in silver-zinc alkaline cell
Computer methods for collection, reduction, correlation, and analysis of spacecraft nickel-cadmium battery test data
Highly conductive nonaqueous electrolytes for high energy battery
Gamma radiation effects determined on silver and zinc battery electrodes and silver-cadmium cells
High capacity nonaqueous secondary battery development - lithium deposition and cycling, ionic solvation, cathode construction and discharge efficiency, and solvent purification
Zinc-silver oxide battery design for improved and activated charge retention, voltage control, and temperature stability
Development and testing of vivyl polymer separator materials for sterilized silver-zinc secondary battery
Design of silver oxide-zinc battery of limited cycle life with no degradation in discharge voltage characteristics
High energy anode and cathode development, electrolyte encapsulation, tape activation, and parasitic operation techniques for dry tape battery concept
Cell discharge measurements for dry tape battery couple - anode and cathode development in aqueous and nonaqueous electrolytes
High capacity nonaqueous secondary battery - synthesis and electrochemical studies of dialkyl and diary beryllium compounds, organoberyllium complex salts, and other complex salt solutions
Existing state-of-the-art wavefront sensing and control setups for the imaging of exoplanets utilize two high-actuator count flat deformable mirrors (DMs) to control both phase and amplitude aberrations. One of the objectives of the Exoplanet Spectroscopy (ExoSpec) project at Goddard Space Flight Center (GSFC) is to improve upon this regime through the development of parabolic deformable mirrors (PDMs), which can address several of the key limitations in existing setups. Specifically, the need for flat DMs to be located in conjugate pupil planes drives unique packaging challenges that can be overcome by allowing the off-axis imaging elements to be controllable as well. In addition, simulations show that the use of deformable powered elements will increase the overall controllable bandwidth, up to 35% over 5-12 lambda/D. To pursue this effort, the ExoSpec group has begun testing a first-generation parabolic DM, which is already informing a second generation design. This paper will provide a comprehensive update on its characterization, including influence function measurements, linearity analysis, closed-loop wavefront control performance, and thermal stability assessment.
This report describes work performed for the JPL/NASA Deep Space Network (DSN). Progress is presented on DSN supporting research and technology, advanced development and engineering, and implementation, and DSN operations which pertain to mission-independent or multiple-mission development as well as to support of flight projects. Each issue contains a description of the functions and facilities of the DSN.