TY - CHAP A1 - Loeb, Horst Wolfgang A1 - Schartner, Karl-Heinz A1 - Dachwald, Bernd A1 - Seboldt, Wolfgang T1 - SEP-Sample return from a main belt asteroid T2 - 30th International Electric Propulsion Conference N2 - By DLR-contact, sample return missions to the large main-belt asteroid “19, Fortuna” have been studied. The mission scenario has been based on three ion thrusters of the RIT-22 model, which is presently under space qualification, and on solar arrays equipped with triple-junction GaAs solar cells. After having designed the spacecraft, the orbit-to-orbit trajectories for both, a one-way SEP mission with a chemical sample return and an all-SEP return mission, have been optimized using a combination of artificial neural networks with evolutionary algorithms. Additionally, body-to-body trajectories have been investigated within a launch period between 2012 and 2015. For orbit-to-orbit calculation, the launch masses of the hybrid mission and of the all-SEP mission resulted in 2.05 tons and 1.56 tons, respectively, including a scientific payload of 246 kg. For the related transfer durations 4.14 yrs and 4.62 yrs were obtained. Finally, a comparison between the mission scenarios based on SEP and on NEP have been carried out favouring clearly SEP. Y1 - 2007 SP - 1 EP - 11 ER - TY - CHAP A1 - Loeb, Horst W. A1 - Schartner, Karl-Heinz A1 - Seboldt, Wolfgang A1 - Dachwald, Bernd A1 - Streppel, Joern A1 - Meusemann, Hans A1 - Schülke, Peter T1 - SEP for a lander mission to the jovian moon europa T2 - 57th International Astronautical Congress N2 - Under DLR-contract, Giessen University and DLR Cologne are studying solar-electric propulsion missions (SEP) to the outer regions of the solar system. The most challenging reference mission concerns the transport of a 1.35-tons chemical lander spacecraft into an 80-RJ circular orbit around Jupiter, which would enable to place a 375 kg lander with 50 kg of scientific instruments on the surface of the icy moon "Europa". Thorough analyses show that the best solution in terms of SEP launch mass times thrusting time would be a two-stage EP module and a triple-junction solar array with concentrators which would be deployed step by step. Mission performance optimizations suggest to propel the spacecraft in the first EP stage by 6 gridded ion thrusters, running at 4.0 kV of beam voltage, which would save launch mass, and in the second stage by 4 thrusters with 1.25 to 1.5 kV of positive high voltage saving thrusting time. In this way, the launch mass of the spacecraft would be kept within 5.3 tons. Without a launcher's C3 and interplanetary gravity assists, Jupiter might be reached within about 4 yrs. The spiraling-down into the parking orbit would need another 1.8 yrs. This "large mission" can be scaled down to a smaller one, e.g., by halving all masses, the solar array power, and the number of thrusters. Due to their reliability, long lifetime and easy control, RIT-22 engines have been chosen for mission analysis. Based on precise tests, the thruster performance has been modeled. Y1 - 2006 U6 - https://doi.org/10.2514/6.IAC-06-C4.4.04 N1 - 57th International Astronautical Congress, 02 October 2006 - 06 October 2006, Valencia, Spain. SP - 1 EP - 12 ER - TY - CHAP A1 - Schusser, Sebastian A1 - Bäcker, Matthias A1 - Leinhos, Marcel A1 - Krischer, M. A1 - Wenzel, L. A1 - Poghossian, Arshak A1 - Wagner, Patrick A1 - Schöning, Michael Josef T1 - Sensorkonzept zur in vitro Echtzeitmessung des Degradationsverhaltens von biodegradierbaren Biopolymeren T2 - 11. Dresdner Sensor-Symposium : 9.-11.12.2013 Y1 - 2013 SN - 978-3-9813484-5-3 SP - 174 EP - 177 ER - TY - CHAP A1 - Bäcker, Matthias A1 - Schusser, Sebastian A1 - Leinhos, Marcel A1 - Poghossian, Arshak A1 - Schöning, Michael Josef T1 - Sensor system for the monitoring of degradation processes of biodegradable biopolymers T2 - Sensoren und Messsysteme 2014 ; Beiträge der 17. GMA/ITG-Fachtagung vom 3. bis 4. Juni 2014 in Nürnberg. (ITG-Fachbericht ; 250) Y1 - 2014 SN - 978-3-8007-3622-5 SP - 1 EP - 4 PB - VDE-Verl. CY - Düsseldorf ER - TY - CHAP A1 - Altherr, Lena A1 - Conzen, Max A1 - Elsen, Ingo A1 - Frauenrath, Tobias A1 - Lyrmann, Andreas ED - Reiff-Stephan, Jörg ED - Jäkel, Jens ED - Schwarz, André T1 - Sensor retrofitting of existing buildings in an interdisciplinary teaching project at university level T2 - Tagungsband AALE 2023 : mit Automatisierung gegen den Klimawandel N2 - Existing residential buildings have an average lifetime of 100 years. Many of these buildings will exist for at least another 50 years. To increase the efficiency of these buildings while keeping costs at reasonable rates, they can be retrofitted with sensors that deliver information to central control units for heating, ventilation and electricity. This retrofitting process should happen with minimal intervention into existing infrastructure and requires new approaches for sensor design and data transmission. At FH Aachen University of Applied Sciences, students of different disciplines work together to learn how to design, build, deploy and operate such sensors. The presented teaching project already created a low power design for a combined CO2, temperature and humidity measurement device that can be easily integrated into most home automation systems KW - Building Automation KW - Smart Building KW - CO2 KW - Carbon Dioxide KW - Education Y1 - 2023 SN - 978-3-910103-01-6 U6 - https://doi.org/10.33968/2023.04 N1 - 19. AALE-Konferenz. Luxemburg, 08.03.-10.03.2023. BTS Connected Buildings & Cities Luxemburg (Tagungsband unter https://doi.org/10.33968/2023.01) SP - 31 EP - 40 PB - le-tex publishing services GmbH CY - Leipzig ER - TY - CHAP A1 - Bücking, Henrik A1 - Pfaff, Raphael A1 - Dirksmeier, Roger T1 - Sensor positioning and thermal model for condition monitoring of pressure gas reservoirs in vehicles T2 - Proceedings of the Fourth European Conference of the Prognostics and Health Management Society, Utrecht, Netherlands, 2018 Y1 - 2018 ER - TY - CHAP A1 - Bung, Daniel Bernhard T1 - Sensitivity of phase detection techniques in aerated chute flows to hydraulic design parameters T2 - 2nd European IAHR congress : 27. - 29. June 2012, München Y1 - 2012 SN - 978-3-943683-03-5 SP - Artikelkennnummer: B15 PB - Lehrstuhl u. Versuchsanst. für Wasserbau u. Wasserwirtschaft d. TU München CY - München ER - TY - CHAP A1 - Rings, René A1 - Ludowicy, Jonas A1 - Finger, Felix A1 - Braun, Carsten A1 - Bil, Cees T1 - Sensitivity Analysis of General Aviation Aircraft with Parallel Hybrid-Electric Propulsion Systems T2 - Asia Pacific International Symposium on Aerospace Technology. APISAT 2019 Y1 - 2019 ER - TY - CHAP A1 - Werner, Frederik A1 - Yoshinobu, T. A1 - Miyamoto, K. A1 - Schöning, Michael Josef A1 - Wagner, Torsten T1 - Semiconductor-based sensors for imaging of chemical processes T2 - Sensoren und Messsysteme 2014 ; Beiträge der 17. GMA/ITG-Fachtagung vom 3. bis 4. Juni 2014 in Nürnberg. (ITG-Fachbericht ; 250) Y1 - 2014 SN - 978-3-8007-3622-5 SP - 1 EP - 5 PB - VDE-Verl. CY - Düsseldorf ER - TY - CHAP A1 - Ferrein, Alexander A1 - Potgieter, Anet A1 - Steinbauer, Gerald T1 - Self-aware robots - What do we need from learning, deliberation, and reactive control? T2 - HYCAS 2009 : International Workshop on Hybrid Control of Autonomous Systems : Integrating Learning, Deliberation and Reactive Control : Pasadena, Calif., 13 July 2009 Y1 - 2009 SP - 1 EP - 5 PB - AAAI Pr. ER - TY - CHAP A1 - Bung, Daniel Bernhard A1 - Schlenkhoff, Andreas T1 - Self-aerated skimming flow on embankment stepped spillways : the effect of additional micro-roughness on energy dissipation and oxygen transfer T2 - Proceedings from first IAHR European congress : May 2010, Edinburgh Y1 - 2010 SN - 9780956595102 SP - Artikelkennnummer HSIIId PB - Heriot-Watt University, School of the Built Environment CY - Edinburgh ER - TY - CHAP A1 - Bung, Daniel Bernhard A1 - Schlenkhoff, Andreas A1 - Oertel, M. T1 - Self-aerated skimming flow on embankment stepped spillways T2 - Water engineering for sustainable environment : 33rd IAHR congress ; 9 - 14 August 2009, Vancouver, British Columbia, Canada Y1 - 2009 SN - 9789078046080 SP - 1 CD-ROM ER - TY - CHAP A1 - Ganegedara, H. A1 - Alahakoon, D. A1 - Mashford, J. A1 - Paplinski, A. A1 - Müller, Karsten A1 - Deserno, T. M. T1 - Self organising map based region of interest labelling for automated defect identification in large sewer pipe image collections T2 - The 2012 International Joint Conference on Neural Networks (IJCNN) : 10 - 15 June 2012, Brisbane, Australia ; [part of the] 2012 IEEE World Congress on Computational Intelligence (IEEE-WCCI 2012) Y1 - 2012 SN - 978-1-4673-1490-9 PB - IEEE CY - Piscataway, NJ ER - TY - CHAP A1 - Müller, Karsten A1 - Krug, R. T1 - Selektive Inspektion als Grundlage für Betrieb, Unterhalt und Sanierung T2 - Schriftliche Fassungen der Vorträge zur 3. Tagung "Entwicklungen in der Kanalisationstechnik" : am 2. und 3. September 1999 in Köln Y1 - 1999 SP - 10/1 EP - 10/8 CY - Köln ER - TY - CHAP A1 - Bung, Daniel Bernhard A1 - Schlenkhoff, Andreas T1 - Selbstbelüftete Gerinneströmungen auf Treppenschussrinnen T2 - Talsperren im Wandel : 15. Deutsches Talsperrensymposium ; Beiträge zur Tagung am 14. bis 16. April 2010 im Eurogress Aachen Y1 - 2010 SN - 978-3-8322-9043-6 SP - 39 EP - 47 ER - TY - CHAP A1 - Michel, P. A1 - Zilligen, H. A1 - Rosin, J. A1 - Butenweg, Christoph T1 - Seismisches Verhalten pfahlgegründeter Tankbauwerke T2 - Erdbeben und bestehende Bauten : 14. D-A-C-H Tagung 20.08. - 21.08.2015, ETH Zürich. (Dokumentation / SIA ; D 0255) Y1 - 2015 SN - 978-3-03732-060-0 SP - 181 EP - 188 PB - SGEB CY - Zürich ER - TY - CHAP A1 - Schmitt, T. A1 - Butenweg, Christoph T1 - Seismische Einwirkungen auf erdverlegte Rohrleitungssysteme – Parameterstudie T2 - Erdbeben und bestehende Bauten : 14. D-A-C-H Tagung 20.08. - 21.08.2015, ETH Zürich. (Dokumentation / SIA ; D 0255) Y1 - 2015 SN - 978-3-03732-060-0 SP - 199 EP - 206 PB - SGEB CY - Zürich ER - TY - CHAP A1 - Renault, Philippe A1 - Butenweg, Christoph A1 - Mistler, Michael T1 - Seismic vulnerability assessment system for bridges T2 - Proceedings of the Tenth International Conference on Civil, Structural and Environmental Engineering Computing : [Rome, Italy, 30. August - 2. September 2005] / ed. by B. H. V. Topping Y1 - 2005 SN - 1-905088-00-0 SP - 1 EP - 14 PB - Civil-Comp Press CY - Stirling ER - TY - CHAP A1 - Kuhlmann, Wolfram A1 - Butenweg, Christoph A1 - Lopez, Marijen A1 - Fernandez, Sebastian T1 - Seismic vulnerability assessment of the historic Aachen Cathedral T2 - Conference proceedings / 13th World Conference on Earthquake Engineering [Vancouver, British Columbia, Canada, August 1 - 6, 2004] / [hosted by CAEE/ACGP, Canadian Association for Earthquake Engineering] Y1 - 2004 SP - 1 EP - 14 PB - CAEE CY - Vancouver ER - TY - CHAP A1 - Churilov, Sergej A1 - Dumova-Jovanoska, Elena A1 - Butenweg, Christoph ED - Adam, Christoph ED - Heuer, Rudolf ED - Lenhardt, Wolfgang ED - Schranz, Christian T1 - Seismic verification of existing masonry buildings and strengthening with reinforced concrete jackets T2 - Proceedings - Vienna Congress on Recent Advances in Earthquake Engineering and Structural Dynamics 2013 (VEESD 2013) N2 - A methodology for assessment, seismic verification and strengthening of existing masonry buildings is presented in this paper. The verification is performed using a calculation model calibrated with the results from ambient vibration measurements. The calibrated model serves as an input for a deformation-based verification procedure based on the Capacity Spectrum Method (CSM). The bearing capacity of the building is calculated from experimental capacity curves of the individual walls idealized with bilinear elastic-perfectly plastic curves. The experimental capacity curves were obtained from in-plane cyclic loading tests on unreinforced and strengthened masonry walls with reinforced concrete jackets. The seismic action is compared with the load-bearing capacity of the building considering non-linear material behavior with its post-peak capacity. The application of the CSM to masonry buildings and the influence of a traditional strengthening method are demonstrated on the example of a public school building in Skopje, Macedonia. Y1 - 2013 SN - 978-3-902749-04-8 N1 - Vienna Congress on Recent Advances in Earthquake Engineering and Structural Dynamics, Vienna, Austria, Paper No. 523 13. D-A-CH Tagung ; Vienna, Austria, 29. - 30. August 2013 http://hdl.handle.net/20.500.12188/15830 (Error - Cannot Connect to Server) ER -