This solicitation closed on June 3, 2026
View current Department of Defense opportunities →Advanced Liquid Hydrogen Storage and Employment Methodologies for Unmanned Aerial Systems
AI Overview
This STTR seeks advanced liquid hydrogen storage systems for Navy and Marine Corps unmanned aircraft, addressing the need for lightweight, high-density fuel solutions that minimize weight and volume while meeting strict safety and durability standards across various UAS platforms.
This summary is AI-generated from the official solicitation.
Key Details
Official Description
Hydrogen fuel-cell-powered air systems are becoming more prevalent in aviation [Refs 1-4]. Although compressed gaseous hydrogen has traditionally been employed to power these systems, cryogenic liquid hydrogen has recently started gaining traction [Refs 5-8]. Overall, liquid hydrogen storage provides added benefits such as reduced weight and volume compared to gaseous hydrogen storage, but there are still challenges to air vehicle integration and long-term use due to the extreme low temperature ...
Change History
Advanced Liquid Hydrogen Storage and Employment Methodologies for Unmanned Aerial Systems
Opportunity DON26TZ01-NV003 no longer available
Advanced Liquid Hydrogen Storage and Employment Methodologies for Unmanned Aerial Systems
Added 1 new Q&A clarifying that the topic is not ITAR restricted and permits foreign national participation in Phase I fundamental research efforts.
Advanced Liquid Hydrogen Storage and Employment Methodologies for Unmanned Aerial Systems
Status changed from Pre-Release to Open
Advanced Liquid Hydrogen Storage and Employment Methodologies for Unmanned Aerial Systems
Both Q1 and Q2 received identical answers clarifying that the topic is not limited to cryogenic H2 only—other hydrogen storage technologies meeting the solicitation's performance metrics and requirements will be considered.
Advanced Liquid Hydrogen Storage and Employment Methodologies for Unmanned Aerial Systems
# Summary This Q&A clarifies the scope of hydrogen storage technologies eligible for the funding opportunity, specifically whether applications are limited to cryogenic hydrogen or include other advanced storage systems meeting a volumetric density threshold of 103 g/L.
Advanced Liquid Hydrogen Storage and Employment Methodologies for Unmanned Aerial Systems
Close Date changed from 2026-04-22 to 2026-06-03
Advanced Liquid Hydrogen Storage and Employment Methodologies for Unmanned Aerial Systems
Open Date changed from 2026-03-25 to 2026-05-06
Advanced Liquid Hydrogen Storage and Employment Methodologies for Unmanned Aerial Systems
Status changed from Removed to Pre-Release
Advanced Liquid Hydrogen Storage and Employment Methodologies for Unmanned Aerial Systems
Opportunity DON26TZ01-NV003 no longer available
Advanced Liquid Hydrogen Storage and Employment Methodologies for Unmanned Aerial Systems
New opportunity: Advanced Liquid Hydrogen Storage and Employment Methodologies for Unmanned Aerial Systems
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