Browsing by Author "Woods, Julius"
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Item "Getter" Development for International Space Station Sabatier Assembly(51st International Conference on Environmental Systems, 7/10/2022) Yu, Ping; Woods, Julius; Corcoran, Matthew; Monje, Oscar; Finn, Riley; Perry, Jay; Kayatin, Matthew; Gavin, Lynda; Garr, John; Walker, StephanieThe Sabatier Assembly (SA) P/N SV1015510-1 was designed by Collins Aerospace to partially close the life support loop on ISS by reacting two waste gases (carbon dioxide and hydrogen) to form water (and waste methane). Waste CO2 is recovered by the Carbon Dioxide Recovery Assembly (CDRA) and waste H2 comes from the Oxygen Generation System (OGS). By recycling these waste gases, the SA reduces the need to launch excess water from earth ground. The SA was successfully launched in 2010 and remained in operation until October 2017. it had produced approximately 1081 liters of water. During the last year of operation, the Sabatier on?orbit unit began to show significant signs of degradation in the reactor which required increasingly involved procedures to restart the reaction after a shutdown. Eventually the SA was deactivated and returned to Collins for Test, Teardown and Evaluation (TT&E). In 2018, Collins performed a TT&E on the SA. TT&E results indicated that the primary source of degradation in the Sabatier system was due to contamination. In specific, the Reactor had become significantly poisoned with sulfur, silicon, fluorine, and chlorine which caused the active sites within the reactor to become inactive. Upon completion of the TT&E, a list of upgrades were recommend for a Sabatier 2.0 design. An upgraded Sabatier 2.0 system would be used to support Exploration demonstration hardware on ISS and beyond. One of the primary recommendations was to incorporate a �getter� sorbent bed. Collins has since worked with KSC, MSFC and JSC to develop the �getter� sorbent bed component for loading upstream of Sabatier reactor with a goal to provide a protection to the reactor from contamination and to extend its service life. This paper describes the joint efforts in developing a suitable Sabatier �getter�.Item Poisoning Evaluation of On-Orbit Sabatier Assembly(2020 International Conference on Environmental Systems, 2020-07-31) Carpenter, Joyce; Yu, Ping; Woods, Julius; Goberman, Daniel; Galvin, Lynda; Garr, John; Ulrich, BettyLynnThe Sabatier Assembly (SA) P/N SV1015510-1 was designed by Collins Aerospace to partially close the life support loop on ISS by reacting two waste gases (carbon dioxide and hydrogen) to form water (and waste methane). Waste CO2 is recovered from cabin air by the Carbon Dioxide Recovery Assembly (CDRA) and waste H2 comes from the Oxygen Generation System (OGS). By recycling these waste gases, this reduces the need to launch excess water, which is costly. The SA was successfully launched in 2010, and was in operation from June 2011 through October 2017. During that period of time, Sabatier produced 1081 liters of water. In 2018, the Sabatier on-orbit unit began to show significant signs of degradation in the reactor. To keep the system operating, this required increasingly involved procedures to restart the reaction after a shutdown. Eventually, the decision was made to shut down the Sabatier Assembly and to return it to Collins Aerospace for TT&E (Test, Teardown and Evaluation) with the goal of providing an upgraded system to support Exploration demonstration hardware on ISS. This paper reports the poisoning evaluation results of the catalyst reactor.