High Efficiency Lined Pressurized – Gas Storage (HELP-GAS)

Dynovas’ High Efficiency Linerless Pressurized Gas Storage (HELP-GAS) system is specifically designed to deliver a gaseous hydrogen storage system for UASs that stores compressed hydrogen at greater than 7% weight efficiency for maximum expected operating pressures (MEOPs) between 350 bar and 700 bar. Additionally, the HELP-GAS system reduces the cost of hydrogen storage systems by reducing or eliminating the liner and allowing the use of standard or even low-cost carbon fibers not traditionally seen in Type I-IV pressure vessels due to the weight and performance constraints. Overall, Dynovas’ HELP-GAS technology achieves greater than 12 wt% of GH2 storage masses greater than 200g at a 25%+ reduction in overall cost for low quantity productions seen for UAS applications. The HELP-GAS system leverages four (4) technologies to achieve weight and packaging efficiencies: (1) Type IV pressure vessel configuration, (2) utilizing matrix additives to reduce microcracking and increase pressurization cycles capability, (3) utilization of the pressure vessel as part of the structure of the UA, and (4) utilization of non-traditional geometries to increase the spatial utilization of the integrated pressure vessel system. These four innovations, when combined, will allow spatial utilization and weight efficiencies greater than the Type IV pressure vessels currently being utilized in hydrogen fuel cell systems. When realized, Dynovas’ HELP-GAS system will provide the Navy with the capability to utilize hydrogen fuel cell powered propulsion in applications that were previously not possible. The Dynovas team has over 20 years of filament wound pressure vessel heritage developing novel pressurized storage and rocket motor case solutions. Based on Dynovas’ heritage in developing pressure vessels, the output of the Phase II base program will be a prototype design that has attained technology readiness level (TRL) 5 for the desired performance. The proposed Phase II option program will identify further weight savings opportunities for the HELP-GAS system and conclude validation testing on a prototype article bringing the HELP-GAS system to TRL 6. Results of the prototype testing along with further weight reduction efforts will ensure success when transitioning to Phase III. The Phase II base combined with the Phase II option will serve to ready the HELP-GAS system for ultimate attainment of TRL 7+ in Phase III and beyond.