Space Shuttle Trace Gas Analyzer

Details Space Shuttle Trace Gas Analyzer Space Shuttle Trace Gas Analyzer

Aug 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975sshm.meett....d&link_type=abstract

AAS, AIAA, IEEE, ORSA, and IMS, Meeting on Space Shuttle Missions of the 80's, Denver, Colo., Aug. 26-28, 1975, AAS 13 p.

Computer Science

Gas Analysis, Gas Chromatography, Mass Spectrometers, Space Shuttles, Spacecraft Contamination, Trace Contaminants, Electrochemical Cells, Flight Safety, Outgassing, Toxic Hazards, Viking Lander Spacecraft

Scientific paper

A Trace Gas Analyzer (TGA) with the ability to detect the presence of toxic contaminants in the Space Shuttle atmosphere within the subparts-per-million range is under development. The design is a modification of the miniaturized Gas Chromatograph-Mass Spectrometer (GCMS) developed for the Viking Mars Lander. An ambient air sample is injected onto the GC column from a constant volume sample loop and separated into individual compounds for identification by the MS. The GC-MS interface consists of an effluent divider and a silver-paladium separator, an electrochemical cell which removes more than 99.99% of the hydrogen carrier gas. The hydrogen is reclaimed and repressurized without affecting the separator efficiency, a feature which enables a considerable weight reduction in the carrier gas supply system.

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