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Liquid oxygen liquid acquisition device bubble point tests with high pressure lox at elevated temperatures
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Jurns, John M. Hartwig, Jason W. |
| Copyright Year | 2011 |
| Description | When transferring propellant in space, it is most efficient to transfer single phase liquid from a propellant tank to an engine. In earth s gravity field or under acceleration, propellant transfer is fairly simple. However, in low gravity, withdrawing single-phase fluid becomes a challenge. A variety of propellant management devices (PMD) are used to ensure single-phase flow. One type of PMD, a liquid acquisition device (LAD) takes advantage of capillary flow and surface tension to acquire liquid. The present work reports on testing with liquid oxygen (LOX) at elevated pressures (and thus temperatures) (maximum pressure 1724 kPa and maximum temperature 122K) as part of NASA s continuing cryogenic LAD development program. These tests evaluate LAD performance for LOX stored in higher pressure vessels that may be used in propellant systems using pressure fed engines. Test data shows a significant drop in LAD bubble point values at higher liquid temperatures, consistent with lower liquid surface tension at those temperatures. Test data also indicates that there are no first order effects of helium solubility in LOX on LAD bubble point prediction. Test results here extend the range of data for LOX fluid conditions, and provide insight into factors affecting predicting LAD bubble point pressures. |
| File Size | 1134398 |
| Page Count | 18 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20110014531 |
| Archival Resource Key | ark:/13960/t1ng9n40v |
| Language | English |
| Publisher Date | 2011-06-08 |
| Access Restriction | Open |
| Subject Keyword | Propellants And Fuels Data Acquisition Liquid Rocket Propellants Solubility Capillary Flow High Temperature Single-phase Flow Propellant Tanks Helium High Pressure Bubbles Pressure Vessels Interfacial Tension Liquid Oxygen Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
