Browsing by Author "Hofmann, Peter"
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Item 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, PierreANITA2 (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.Item ANITA2 on its way now to ISS - Latest results and developments of the multicomponent ISS Air Analyser(46th International Conference on Environmental Systems, 2016-07-10) Stuffler, Timo; Hofmann, Peter; Honne, AtleThe advanced ISS air monitor ANITA2 follows the European precursor mission ANITA1, which in 2007 an 2008 successfully operated on 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 dynamics in manned space cabins atmosphere and became an important decision and working basis for responsible space agencies. The advantages of the ANITA type instruments are high time resolution, high accuracy and precision in the measurement data and no consumables with the exception of moderate electrical power. The spectrometer relies on optical analyses with an Fourier Transform Infrared spectrometer. For stable operations with good detection limits the gas to be analysed is regularly flushed into a gas cell and brought back into the cabin after the measurement. At the time of the conference the phase1 of the next generation ANITA2 development has already started with a goal of an instrument flight on ISS by 2019. To keep within this development schedule, critical subsystems have been bread boarded in two earlier ESA technology programs. Beside a significant reduction in size, mass, volume and power consumption, ANITA2 will show improved characteristics in gas analysis sensitivity of at least one order of magnitude compared to ANITA1. To achieve this, sophisticated analysis S/W plays again an important role for the overall instrument performance. Applying non-linear analysis methods the system calibration is very important for the final overall instrument characteristics. ANITA2 represents a precursor system for crewed CIS lunar exploration missions and in the future also for missions to Mars and Moon. The paper gives a status report on the instrument BB activities and analysis software developments giving an outlook into the future programmatic. The work described is performed under contract of ESA.