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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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Cost comparison of perlite and multilayer aluminum foil relective insulation in liquid hydrogen storage dewars for M-1 engine
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Tensile tests in high pressure hydrogen on various steels, discussing strength and ductility of notched and unnotched specimens
Hydrogen maser frequency shift due to atomic collisions with deformable storage bulb surface
Production of slush hydrogen for nuclear rocket propulsion testing
Jacketed multilayer insulation system design, fabrication and compression testing for liquid hydrogen storage tank
Tensile tests on welded plates of three grades of steel indicate an appreciable decrease of tensile strength and ductility of notched specimens and a decrease in ductility of unnotched samples. Surface cracking, evident in unnotched specimens, is conducive to breakdown in tensile strength and ductility.
Hydrogen maser wall shift measurement, using flexible storage bulb for accuracy improvement
Computer analysis of thermal characteristics of liquid hydrogen storage vessel on moon - thermal conductivity of insulation, solar absorptance and emittance ratio, and vessel characteristics
Advanced aircraft concepts that use non-traditional aviation energy storage methods such as batteries or cryogenic hydrogen are in development and expected to enter regular service at airports worldwide within the next decade. The energy needs for these aircraft may quickly overwhelm the existing energy infrastructure at airports, particularly at smaller and more remote facilities. Without energy upgrades, these airports will not be able to host these advanced vehicles, but without the advanced vehicle traffic, these airports will not have the rationale or funding to build up their energy infrastructure. The Airports as Energy Nodes (ÆNodes) activity, a collaboration between the National Aeronautics and Space Administration (NASA) and the National Renewable Energy Laboratory (NREL), was executed to understand and model the energy needs that advanced aircraft concepts may levy on these smaller airports, determine cost-effective approaches to enhance the airport energy infrastructure, and demonstrate the enhanced resilience of these energy infrastructure upgrades to the airport and surrounding community via “digital twin” simulation at relevant energy and dynamic time scales. The ÆNodes team also investigated future reference aircraft designs and materials to enable cryogenic hydrogen storage for aircraft. The ÆNodes team conducted analysis at two U.S. airport partner sites — Winchester Regional Airport in Winchester, Virginia, and Tweed/New Haven Airport in New Haven, Connecticut. The goal of this partnership was to develop data and reference infrastructure designs that could accommodate advanced aircraft in the future at these airports while also enhancing the resiliency of the energy supply to the surrounding airport community, which could be used to capture funding to enable the infrastructure upgrades. Over the course of the study, a method was developed to estimate air traffic requiring advanced energy services over the course of a year using a mix of historical data and companion studies on advanced aircraft transportation networks. The study has concluded at NASA but continues at NREL, who will develop a final report discussing the energy infrastructure upgrades and digital twin results. Preliminary results indicate that unrestricted adoption of advanced battery-electric aircraft may double traffic at these airports and increase peak daily power usage by an order of magnitude, while increase electricity energy needs by a factor of two to four. The infrastructure upgrades necessary to accommodate these increased energy needs could be used to provide enhanced energy services to the airport community to offset the cost and increase the utility of the upgrades, which will be described in the NREL final report.
Payload optimization factors for orbital storage of liquid hydrogen, considering payload cost of agitation, tank pressure, pressurant weight, etc
Payload optimization factors for orbital storage of liquid hydrogen, considering payload cost of agitation, tank pressure, pressurant weight, etc
Hydrogen maser construction and operation design principles emphasizing microwave cavity, low magnetic field, hydrogen storage and maser tuning techniques
Radioisotopic propulsion systems for solar probes or deep space missions considering lightweight tankage, liquid hydrogen storage, etc
Functional and environmental testing of 6000 psig, 3/4-inch shutoff valve for venting high pressure gaseous hydrogen storage bottles
Data tables for optimal thermal protection of liquid hydrogen storage in nuclear interplanetary spacecraft
Structural failures of high pressure, gaseous hydrogen storage tanks for M-1 engines
Hydrogen environment embrittlement causes failure of hydrogen storage vessels at and below design pressures of 5000 to 6000 psi. Investigation of thirty-five alloys determines their susceptibility to such embrittlement.