International Space Station Major Constituent Analyzer On-orbit Performance

Simple item page
dc.creatorGardner, Ben
dc.creatorErwin, Phillip
dc.creatorChladek, Rache
dc.creatorMatty, Chris
dc.date.accessioned2016-07-28T19:33:09Z
dc.date.available2016-07-28T19:33:09Z
dc.date.issued2016-07-10
dc.descriptionUnited States
dc.descriptionUnited Technologies Aerospace Systems
dc.descriptionThe Boeing Company
dc.descriptionNASA
dc.description404
dc.descriptionICES404: International Space Station ECLS: Systems
dc.descriptionVienna, Austria
dc.descriptionThe 46th International Conference on Environmental Systems was held in Vienna, Austria, USA on 10 July 2016 through 14 July 2016.
dc.descriptionBen D. Gardner, UTC Aerospace Systems, USA
dc.descriptionPhillip M. Erwin, UTC Aerospace Systems, USA
dc.descriptionRachel Chladek, The Boeing Company, USA
dc.descriptionChris Matty, NASA Johnson Space Center, USA
dc.description.abstractThe Major Constituent Analyzer (MCA) is an integral part of the International Space Station (ISS) Environmental Control and Life Support System (ECLSS). It is a mass spectrometer-based instrument designed to provide critical monitoring of six major atmospheric constituents: nitrogen, oxygen, hydrogen, carbon dioxide, methane and water vapor. These gases are sampled continuously and automatically in all United States On-Orbit Segment (USOS) modules via the Sample Distribution System (SDS). The MCA is the primary tool for management of atmosphere constituents and is therefore critical for ensuring a habitable ISS environment during both nominal ISS operations and campout EVA preparation in the Airlock. This paper discusses the performance of the MCA on orbit over the past year, with particular attention to lessons learned regarding the operational life of critical components. Recent data have helped validate design upgrades to the filaments and ion pumps for a new set of orbit-replaceable units (ORUs) – upgrades that were implemented in the last several years for both production and depot overhaul units. The upgrades for the analyzer (ORU 02) are designed to increase expected lifetimes and reliability of these subsystems. Additionally, MCA has generated preliminary data for the detection of ammonia, which expands MCA capability and mission set.
dc.format.mimetypeapplication/pdf
dc.identifier.otherICES_2016_362
dc.identifier.urihttp://hdl.handle.net/2346/67689
dc.language.isoeng
dc.publisher46th International Conference on Environmental Systems
dc.subjectMass Spectrometer
dc.subjectECLS
dc.subjectMCA
dc.titleInternational Space Station Major Constituent Analyzer On-orbit Performance
dc.typePresentation

Files

Original bundle

Now showing 1 - 1 of 1
Thumbnail Image
Name:
ICES_2016_362.pdf
Size:
611.63 KB
Format:
Adobe Portable Document Format
Download

Collections

International Conference on Environmental Systems