The solicitation seeks submissions for prototype metrology and predictive modeling to understand transient wave propagation and coupled behavior in compressible liquids. It requires coordinated experimental diagnostics and physics-based computational modeling, with a nine-month feasibility phase followed by a nine-month proof-of-concept option. Selected projects may receive an Other Transaction for Prototype award capped at $995,000; required abstracts are due November 3, 2026, and full proposals are due December 14, 2026, at 4:00 p.m. ET.