Browsing by Author "Maiwald, Frank"
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Item Calibration and Performance of the Spacecraft Atmosphere Monitor, an Air Constituent Monitor for Human Spaceflight(2023 International Conference on Environmental Systems, 2023-07-16) Darrach, Murray; Bae, Byunghoon; Fu, Dejian; Garkanian, Vachik; Homer, Margie; Kidd, Richard; Jung-Kubiak, Cecile; Kraus, Hannes; Maiwald, Frank; Madzunkov, Stojan; Malone, Charles; Nikolic, Dragan; Rais-Zadeh, Mina; Simcic, Jurij; Tillmans, Tina; Zhong, FangThe Spacecraft Atmosphere Monitor (S.A.M.) is a miniaturized gas chromatograph mass spectrometer (GC/MS) instrument for monitoring the cabin atmosphere for human spaceflight missions. The first Technology Demonstration Unit (TDU1) operated successfully aboard the International Space Station (ISS) from August 2019 to July 2021. The second unit, TDU2, will be delivered to ISS in 2023. While on-station, TDU2 will continuously monitor the major atmospheric constituents and, on command, perform analysis of the cabin atmosphere for trace organic volatiles. The S.A.M. TDU2 uses the same quadrupole ion trap mass spectrometer (QITMS) sensor as in TDU1, but includes a MEMS preconcentrator, gas chromatograph, and microvalve system. Its miniature, ruggedized form factor allows the S.A.M. to be aisle-deployed to monitor the cabin in different locations and during activities such as exercise and sleep.Item Status and Results of the Spacecraft Atmosphere Monitor Technology Demonstration Instrument(51st International Conference on Environmental Systems, 7/10/2022) Darrach, Murray; Madzunkov, Stojan; Bae, Byunghoon; Kidd, Richard; Maiwald, Frank; Malone, Charles; Nikolic, Dragan; Belousov, Anton; Zhong, Fang; Simcic, Jurij; Homer, Margie; Gonzales, Marianne; Garkanian, Vachik; Lopez, Valeria; Jung-Kubiak, Cecile; Rais-Zadeh, Mina; Krause, Hannes; Tillmans, TinaThe Spacecraft Atmosphere Monitor (S.A.M.) is a miniaturized gas chromatograph mass spectrometer (GC/MS) instrument that is being developed for monitoring the cabin atmosphere for human spaceflight missions. The first Technology Demonstration Unit (TDU1) operated successfully aboard the International Space Station (ISS) from August 2019 to July 2021, exceeding its 1 year planned operational lifetime. The TDU1 continuously monitored the ISS cabin atmosphere for the major constituents. In June 2020 the TDU1 was also reconfigured at the request of the ISS vehicle office and successfully determined that there was no benzene leaking into the ISS atmosphere. The technology demonstration unit #2 (TDU2) is scheduled to be deployed on the ISS in 2022. While on-station, TDU2 will continuously monitor the major atmospheric constituents as well as trace organic volatiles. The S.A.M. TDU2 uses the same quadrupole ion trap mass spectrometer (QITMS) sensor as in TDU1, but includes a MEMS preconcentrator, gas chromatograph, and microvalve system. Its miniature, ruggedized form factor allows the S.A.M. to be aisle-deployed to monitor the cabin in different locations and during activities such as exercise and sleep. The operational performance of TDU1 and the current status of TDU2 will be discussed.Item Update on the Spacecraft Atmosphere Monitor Technology Demonstration Project(2020 International Conference on Environmental Systems, 2020-07-31) Darrach, Murray; Madzunkov, Stojan; Kidd, Richard; Bae, Byunghoon; Zhong, Fang; Simcic, Jurij; Malone, Charles; Belousov, Anton; Belousov, Anton; Maiwald, Frank; Gonzales, Marianne; Homer, Margie; Diaz, Ernesto; Moore, Bradley; Nikolic, Dragan; Purcell, Richard; Oyake, Amalaye; Tillmans, Tina; Reichenbach, KelseyWe report on the scientific and engineering progress for the second technology demonstration unit (TDU2) of the Spacecraft Atmosphere Monitor (S.A.M.). The S.A.M. TDU2 is a compact gas chromatograph mass spectrometer (GCMS) for monitoring both the trace volatile organics and the major constituents in the astronaut cabin atmosphere. Progress on the micro electro-mechanical systems (MEMS) gas chromatograph is detailed, showing sensitivity and selectivity of the TDU2 analytical measurements. The TDU2 capabilities for monitoring the cabin air major constituents is also detailed, highlighting improvements from the first S.A.M. TDU instrument.