Browsing by Author "Liverud, Anders"

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ANITA2 Flight Model Development - A Status Report of the Multicomponent ISS Air Analyser
(47th International Conference on Environmental Systems, 2017-07-16) Stuffler, Timo; Hofmann, Peter; Stettner, Armin; Seurig, Roland; Gisi, Michael; Honne, Atle; Kaspersen, Kristin; Bakke, Kari; Thielemann, Jens; Liverud, Anders; Witt, Johannes; Hovland, Scott; Laurini, Daniele; Rebeyre, Pierre
ANITA2 (Analysing Interferometer for Ambient Air) follows the European precursor mission ANITA1, which in 2007 and 2008 successfully operated on the ISS for 11 months. ANITA1 delivered information on the air conditions analysing in parallel 32 of the most important trace gases in the cabin atmosphere. The data have shown the benefits of in-situ measurements in a manned space cabin atmosphere. The advantages of the ANITA type instruments include high sensitivity, accuracy, precision and time resolution of the measurement data. The spectrometer relies on optical analyses with a Fourier Transform Infrared spectrometer. In 2016 OHB System and SINTEF were awarded the contract to develop the ANITA2 flight model by ESA, following some years of bread boarding of critical subsystems. The new system is characterised by a significant reduction in mass, volume and power consumption, as well as an improved characteristics in gas analysis sensitivity. The novel, sophisticated analysis S/W is further improved, employing statistical and non-linear calibration and analysis methods. As for ANITA1, the programme is planned to be a joint ESA/NASA project. It is also a stepping stone into the future, as a precursor system for manned exploration missions, e. g. to Mars and the Moon. The paper gives a progress report on the instrument development activities and will highlight status and achievements. The work described is performed under contract of the European Space Agency ESA.
ANITA2 Flight Model Development – First ground test results of the Trace Gas Analyser for the ISS (and beyond)
(48th International Conference on Environmental Systems, 2018-07-08) Stuffler, Timo; Stettner, Armin; Seurig, Roland; Gisi, Michael; Honne, Atle; Kaspersen, Kristin; Bakke, Kari; Thielemann, Jens; Liverud, Anders; Witt, Johannes; Hovland, Scott; Laurini, Daniele; Rebeyre, Pierre
ANITA2 (Analysing Interferometer for Ambient Air) follows the European precursor mission ANITA1, which delivered information on the air conditions analysing in parallel 33 of the most important trace gases on-board ISS in the cabin atmosphere in 2007 and 2008. The data have shown the benefits of in-situ measurements in a manned space cabin atmosphere. The advantages of the ANITA type instruments include high sensitivity, accuracy, precision and time resolution of the measurement data. The gas analyser relies on optical analyses with a Fourier Transform Infrared spectrometer. In 2016, OHB System and SINTEF were awarded by ESA the contract to develop the ANITA2 flight model. The new system is characterised by a major reduction in mass, volume and power consumption, as well as improved characteristics in gas analysis sensitivity. The novel, sophisticated analysis SW is further improved, employing statistical and non-linear calibration and analysis methods. As for ANITA1, the programme is planned to be a joint ESA/NASA project. It is also a stepping stone into the future, as a precursor system for manned exploration missions, e.g. to Mars and the Moon. The paper presents the newly developed and built optomechanical components of the new ANITA2 instrument. It also presents the fully operating optical BB, featuring flight-light build components, and includes the first measurement results. The work described is performed under contract of the European Space Agency ESA.
ANITA2 Trace Gas Analyser for the ISS - Flight Model Finalisation, Ground Test Results, and ANITA-X for future exploration missions
(50th International Conference on Environmental Systems, 2021-07-12) Gisi, Michael; Pfeiffer, Lukas; Stettner, Armin; Seurig, Roland; Wahle, Markus; Honne, Atle; Kaspersen, Kristin; Bakke, Kari; Thielemann, Jens; Liverud, Anders; Witt, Johannes; Rebeyre, Pierre; Hovland, Scott; Laurini, Daniele; Stuffler, Timo
The ANITA2 (Analysing Interferometer for Ambient Air) instrument is a trace gas analyser designed to operate on-board the ISS to monitor the cabin atmosphere. ANITA2 is capable of detecting more than 30 of the most important trace gases in parallel. The advantages of an ANITA type instruments include high sensitivity, accuracy, precision and time resolution of the measurement data, as well as no consumption except electrical power and no production of waste. This makes ANITA also a stepping-stone into the future, as a precursor system for crewed stations, bases, and exploration missions, including the (Deep-Space) Gateway and to/on the Moon and Mars. During the last year, the Flight Model of ANITA2 was successfully integrated and functionally tested. At the time of writing, ANITA2 will soon enter the phase of gas calibration measurements, followed by the building of a complete calibration and an extensive test campaign, applying multi-gas mixtures. This paper presents the state of the FM as well as results of the very successful test campaign, including optical performance, vibration, audible noise, and EMC tests. In addition, an overview of ANITA-X for future exploration missions is presented. As of the current planning, ANITA2 will be ready for flight late in the summer 2021.
ANITA2 Trace Gas Analyser for the ISS - Flight Model Finalization and ground test results
(49th International Conference on Environmental Systems, 2019-07-07) Gisi, Michael; Stettner, Armin; Seurig, Roland; Pfeiffer, Lukas; Stuffler, Timo; Honne, Atle; Kaspersen, Kristin; Bakke, Kari; Thielemann, Jens; Liverud, Anders; Witt, Johannes; Rebeyre, Pierre; Laurini, Daniele; Hovland, Scott
The ANITA2 (Analysing Interferometer for Ambient Air) instrument is a trace gas analyser, designed to operate onboard the ISS and to monitor the cabin atmosphere. Within the last 2 years, significant progress has been made towards realizing the flight instrument, including the flight-like design, manufacturing, and functional testing of the opto-mechanical components, as well as further development of the gas analysis methods. ANITA2 will deliver information on the air conditions, analysing in parallel more than 30 of the most important trace gases in the cabin atmosphere. The advantages of the ANITA type instruments include high sensitivity, accuracy, precision and time resolution of the measurement data, as well as no consumption except electrical power and no production of waste. The novel, sophisticated analysis software is further improved, employing statistical and non-linear calibration and analysis methods. Thus, detailed, continuous, and quasi real time information on the cabin air quality becomes available. ANITA2 is also a stepping stone into the future, as a precursor system for crewed stations, bases, and exploration missions (Gateway, Moon, Mars...) where bringing local gas samples to earth for analysis is not feasible. Therefore the availability of local gas analysis capabilities for a wide range of substances is a key requirement. The paper gives an overview of ANITA2. This includes the overall system concept and design as well as details about sub-systems. The current Optical Breadboard is shown and described, which contains all opto-mechanical components of ANITA2 in a flight-like design. In addition, the main results of the very successful performance testing of the Optical Breadboard are presented. These tests showed a robust, high optical quality at various conditions. ANITA2 has successfully passed PDR in June 2018 and will be ready for flight and start-up on the ISS in 2020. The Flight Model manufacturing started beginning of 2019.