Ocean-deployed sensor systems, including seabed-mounted profiling systems, are pivotal for a multitude of applications ranging from national security to monitoring the dynamics of marine environments and climate change. These systems traditionally rely on batteries for power, which poses significant limitations due to space constraints and the finite energy densities of batteries. Regular maintenance to recharge or replace these batteries is not only costly but also logistically challenging and risky.
The BLUE program proposes a revolutionary solution to this problem by developing an onboard device capable of converting marine biomass into simple fuels, which are then converted into electrical power. This approach aims to provide ultra-long endurance and high payload capacity to remote, ocean-deployed sensor systems, significantly reducing the need for maintenance and the associated risks.
Dr. Leonard Tender, the BLUE program manager, explains, "It is our hypothesis that the energy requirements of many ocean-deployed systems can be met by the development of an onboard device that converts marine biomass into simple fuels and then converts those fuels into operational power."
The 30-month program will involve initial efforts focused on characterizing microscopic marine biomass for electrical power generation, identifying key environmental features to achieve program goals, and developing processes for biomass conversion to electrical power. Additionally, strategies for the capture and mass transport of biomass through conversion will be developed to enable up to one year of continuous power generation. A critical component of the program will be conducting a comprehensive ecological and environmental impact analysis to ensure system safety.
Engagement with U.S. government and defense stakeholders, along with appropriate regulatory authorities, is planned to ensure the safety and efficacy of the developed technologies. Teams will also consult with experts on ethical, legal, and societal implications to address any related concerns. An independent verification and validation team will conduct an environmental assessment of biomass consumption within the first three months of the program.
"Achieving battery-level power persistently and while fully submerged would be a game changer," Tender added, highlighting the transformative potential of the BLUE program.
Interested parties are encouraged to refer to the Broad Agency Announcement solicitation available on SAM.gov for program details and instructions for submitting proposals. Through the innovative use of marine biomass, the BLUE program stands to offer a sustainable, low-impact solution to the energy challenges facing ocean-deployed sensor systems, marking a significant step forward in the pursuit of sustainable ocean energy technologies.
Related Links
Defense Advanced Research Projects Agency
Water News - Science, Technology and Politics
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