Composite Cryogenic Hydrogen Insulated Lightweight Lined Storage (C-CHILL)

Dynovasrsquo; Composite Cryogenic Hydrogen Insulated Lined (C-CHILL) Storage system provides a novel solution that specifically addresses NASArsquo;s call for technologies enabling a liquid hydrogen compatible composite tanks for reusable systems such as spacecraft, surface systems, and hydrogen aircraft for long-duration storage of liquid hydrogen. The system is designed to be 25%-60% lighter than traditional tanks by using a Type IV COPV inner tank with carbon nanotube impregnated resin overwrap which improves structural toughness and micro-cracking resistance. nbsp;This solution was developed based on previous technologies that have a proven track record for cryogenic storage, and advances in composites to achieve long-duration cryogenic fluid storage and new technologies involving cryogenic storage systems, specifically addressing the unique mission requirements for cryogenic hydrogen compatibility with composite construction, however the modular nature of the C-CHILL system allows it to be modified for storage of various alternative cryogenic materials. nbsp;The C-CHILL system will be demonstrated at TRL 6 in Phase II via sub/full scale operation of key elements of the system, including a polymer permeation liner, carbon composite filament wound CNT resin impregnated overwrap, vacuum jacketed thermal insulated outer tank structure, and low CTE metallic vacuum sealed port interface components. All systems are designed for the lunar environment at cryogenic temperature ranges.nbsp;Dynovas will support burst, leak, vacuum, permeation, fatigue, and pressure qualification testing in cryogenic environments, and assembly and acceptance testing within its state-of-the-art space composite structure development and manufacturing facility. The Phase I successfully fabricated a scale model of the C-CHILL system, with demonstrations of several key technologies to achieve a feasible design for a cryogenic storage,nbsp;to be further developed to a full scale model in Phase II.