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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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The goal of this project will be to establish manufacturing processes for PEM electrolyzers in Rochester, New York capable of producing 5GW of PEM electrolyzer stacks per year, while achieving the cost, production and performance targets.
This dataset contains the raw data of "Large moiré superstructure of stacked incommensurate charge-density waves", Nature Materials, 2025
Stage-stacking technique for predicting over-all performance in multistage axial flow turbojet compressor using interstage-air bleed
Multiple or stacked detectors and single fixed detector - improved X-ray vidicon, operation of flat plate Geiger counter, electronic readout system, and Seeman-Bohling focusing camera
Multiple or stacked detectors and single fixed detector to detect and record X-ray diffraction spectrum without utilizing mechanical scanning mechanisms
Torodial ring welded to the vent stack outlet prevents static discharges which ignite combustible gases in a venting system. The ring inhibits the flow of current by removing the cause of turbulence characteristics of a sharply defined vent exit.
Hydrogen vent flare stack performance in adverse weather conditions
Reliability assessment test program for determining capabilities and limitations of 2 kw hydrogen-oxygen fuel cell stacks
Structural stability analysis and buckling modes of Apollo S-4B forward skirt, instrument unit, and spacecraft lunar module adapter /Apollo short stack/
Stacked, vertically polarized collinear arrays of independently fed omnidirectional antennas for flight testing Doppler radar aircraft warning system
Stacking fault energy determination, discussing impurities influence in equilibrium dimensions distortion of extended nodes in titanium carbide
Combustion characteristics and safety factors for hydrogen diffusion flames in flare stack operations
Control of nitrogen dioxide in stack emission by reaction with ammonia
Device has been designed and developed for igniting nonrecoverable combustible gases and sustaining combustion of gases evolving from various gas vent stacks. Igniter is superior to existing systems because of simplicity of operation, low cost fabrication, installation, operational and maintainability features, and excellent reliability in all phases of required operations.
The development of an acid base gas-phase reaction system which utilizes anhydrous ammonia as the reactant to remove nitrogen dioxide from hydrazine-nitrogen tetroxide rocket combustion exhaust is reported. This reaction reduced NO2 levels in exhaust emissions so that the resulting stack emission is completely white instead of the earlier observed typical reddish-brown coloration. Preliminary analyses indicate the importance of reaction time and ammonia concentration on removal efficiency and elimination of the health hazard to individuals with respiratory problems.
An electrode suitable for use in an electrochemical cell is described. The electrode is composed of a porous conductive support with a bonded stack of pieces of thin corrugated nickel foil where the corrugations are oriented approximately perpendicular to the sides of the electrode and form an array of passages through the electrode. Active material such as cadmium hydroxide or nickel hydroxide is uniformly distributed within the passages. The support may comprise also a piece of thin flat nickel foil between adjacent pieces of the corrugated foil, forming a barrier between the passages formed on each side of it. Typically the corrugations in the odd corrugated layers are oriented at a small angle from the perpendicular in one direction and the corrugations in the even corrugated layers are oriented at a small angle from the perpendicular in the opposite direction.
Raman scattering by SO2 in an electrical generating plant stack plume has been observed using an optical radar system. Good qualitative agreement is evident between SO2 backscatter intensity and the plant's electrical power output.
System consists of ultraviolet vidicon tube, interference and color filters, ultraviolet telephoto lens, monitor, and waveform analyzer to extract information from video scene, stack plume viewed against sky. System will view SO2 and any other element which absorbs light at wavelength used.