Life Testing of an Irradiated Mars Flight Heritage Mechanically Pumped Fluid Loop for the Planned Europa Mission

dc.creatorFurst, Benjamin
dc.creatorBirur, Gajanana
dc.creatorCarroll, Brian
dc.creatorYavrouian, Andre
dc.creatorWarner, William
dc.creatorLewis, Donald
dc.date.accessioned2017-07-06T17:14:29Z
dc.date.available2017-07-06T17:14:29Z
dc.date.issued2017-07-16
dc.descriptionBenjamin Furst, NASA Jet Propulsion Laboratory (JPL), USA
dc.descriptionGajanana Birur, Jet Propulsion Laboratory, USA
dc.descriptionBrian Carroll, Jet Propulsion Laboratory, USA
dc.descriptionAndre Yavrouian, Jet Propulsion Laboratory, USA
dc.descriptionWilliam Warner, Jet Propulsion Laboratory, USA
dc.descriptionDonald Lewis, Jet Propulsion Laboratory, USA
dc.descriptionICES102: Thermal Control for Planetary and Small Body Surface Missions
dc.descriptionThe 47th International Conference on Environmental Systems was held in South Carolina, USA on 16 July 2017 through 20 July 2017
dc.description.abstractThe National Aeronautics and Space administration is planning to send a spacecraft to explore Jupiter’s icy moon, Europa. The baseline design for the Europa Mission spacecraft uses a mechanically pumped fluid loop as the primary thermal control system. The fluid loop design is based on the fluid loop system flown on NASA’s Mars Science Laboratory rover, Curiosity. This fluid loop system has been developed over the past two decades through the NASA Martian rover projects. However, unlike the previous Martian missions, the Europa Mission spacecraft will be exposed to high levels of ionizing radiation. The Mars heritage fluid loop has not operated in this type of environment before. In order to evaluate the effects of ionizing radiation on a Mars heritage mechanically pumped fluid loop, a test campaign was undertaken at the NASA Jet Propulsion Laboratory. A fluid loop similar to the anticipated Europa Mission fluid loop was designed and built. CFC-11 was used as the working fluid and the wetted materials were stainless steel and aluminum. The fluid in the system was exposed to between 5 and 6 Mrad of ionizing radiation during four irradiation sessions over the course of four months. Hydraulic performance of the system was monitored during and after each irradiation session. Flowrate, pressure drop and pump power consumption were continually measured. The degradation of the working fluid and containment tubing were evaluated via chemical and metallographic analyses carried out on testbed samples after each irradiation session. It was found that the hydraulic performance, fluid composition and mechanical integrity of the system were minimally affected by the radiation. This paper describes the experiment and its results.
dc.format.mimetypeapplication/pdf
dc.identifier.otherICES_2017_65
dc.identifier.urihttp://hdl.handle.net/2346/72897
dc.language.isoeng
dc.publisher47th International Conference on Environmental Systems
dc.subjectMechanically Pumped Fluid Loop
dc.subjectFluid Loop
dc.subjectThermal Control
dc.subjectIonizing
dc.subjectIrradiation
dc.subjectRadiation
dc.subjectEuropa
dc.subjectClipper
dc.subjectMars
dc.subjectCuriosity
dc.subjectMSL
dc.subjectCFC-11
dc.subjectR11
dc.subjectRefrigerant
dc.subjectCobalt-60
dc.subjectCo-60
dc.subjectgamma
dc.titleLife Testing of an Irradiated Mars Flight Heritage Mechanically Pumped Fluid Loop for the Planned Europa Missionen_US
dc.typePresentation

Files

Original bundle

Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
ICES_2017_65.pdf
Size:
1.01 MB
Format:
Adobe Portable Document Format
Description:

License bundle

Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.57 KB
Format:
Item-specific license agreed upon to submission
Description: