Abstract: A process for 3D printing Carbon-Carbon Composite precursors and affordably pyrolyzing and graphitizing them to form structural parts suitable for aircraft primary structure (or other applications) at costs competitive with machined metal of fiber-resin parts.

Abstract: A process for storing large amounts of energy underground in existing or artificial aquifers at very large scale using deep-water, high-pressure electrolysis. The process is intended for use as large scale storage for electrical power grids. When implemented at depths greater than roughly 500 m, it provides stored energy density equal to or greater than lead-acid batteries while requiring only a pressure vessel. If the geologic structure is appropriate, the vessel may already exist naturally. Because this process does not require compression of the gas(es), when the gas(es) is expanded it become quite cold and therefore extracts heat from the atmosphere. When combined with a sustainable energy source such as wind, solar, ocean or other similar source—the entire process is endothermic. The cold gas(es) can also be used to precipitate CO2 and condense CH4 directly from the atmosphere.