MLI Performance at Intermediate to Rough Vacuum Levels

This proposal aims to investigate the performance of multilayer insula􀆟on (MLI) at intermediate to rough vacuum levels, expanding beyond the conventional focus on high vacuum environments. While MLI is widely used for thermal insulation in cryogenic applications, most research has been conducted under high vacuum conditions where performance is optimal. However, many operational environments such as launch vehicles, spacecraft, and industrial cryogenics, often experience far less than ideal vacuum levels (target range of 1-1000 Microns). This study will characterize how MLI behaves in these intermediate and rough vacuum regimes, assessing its thermal performance and potential degradation. The results will provide critical data for optimizing insulation systems in real-world applications, improving system efficiency and reducing heat transfer in cryogenic storage and transportation systems operating in non-ideal vacuums. Phase I deliverables: Completed study, procurements, some testing.

Provides critical data for cryogenic system design in space and industrial applications. Improves efficiency and reliability of cryogenic insulation systems. Extended cryogenic propellant storage durations. Supports Artemis and other missions by reducing thermal losses in cryogenic transfer and storage.

This is a mature technology (TRL 7+) — the realistic path in is usually NASA's Technology Transfer Program: licensing an existing NASA patent, or a Space Act Agreement to use NASA facilities/expertise directly. NASA also runs a startup licensing program with no upfront fee for companies formed to commercialize a specific NASA technology.

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