URC - Capillary Pressure Gradient Gas Liquid Separation

A 3-year research effort has culminated in the design and testing of a zero-g demonstration prototype. Hydrophilic (glass) and hydrophobic (Teflon) media Capillary Pressure Gradient (CPG) cartridges prepared during the second year’s work were each evaluated. Results obtained from ground testing at 1-g were compared to those obtained at reduced gravities spanning Martian (1/3-g), Lunar (1/6-g) and zero-g. These comparisons clearly demonstrate the relative strength of the CPG phenomena and the efficacy of its application in meeting NASA’s unique gas-liquid separation (GLS) requirements in non-terrestrial environments.

Click the photos below to see video captured during zero-g test flights conducted at NASA's Johnson Space Center.

Earth Gravity

Mars Gravity

Lunar Gravity

Micro Gravity

Ground test with Glass Media

Ground test with Teflon Media

Return to URC Home