| Popis: |
Multiple propellant management devices (PMD) can be utilized within a propellant tank in space to deliver single-phase fluid to the engine in low gravity. One type of PMD, a liquid acquisition device (LAD) uses capillary flow and surface tension for acquiring liquid. This paper presents bubble point data for isopropyl alcohol (IPA), liquid nitrogen (LN2) and liquid oxygen (LO2) for stainless steel Dutch Twill Screens with mesh sizes of 325x2300 and 200x1400. The paper also presents IPA, LN2, and LO2 screen channel outflow data for a stainless steel Dutch Twill screen with a mesh size of 200x1400. LN2 and LO2 bubble point data were found to be scalable from IPA values. Differential pressure across a screen channel during IPA, LN2, and LO2 outflow was found to be repeatable and correlated well with liquid hydrogen (LH2) data previously acquired. These tests represent the first known non-proprietary effort to collect LAD data in LO2. |
