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Performance requirements for near-term interplanetary solar sailcraft missions (2002)
Dachwald, Bernd ; Seboldt, Wolfgang ; Häusler, Bernd
Solar sailcraft provide a wide range of opportunities for high-energy low-cost missions. To date, most mission studies require a rather demanding performance that will not be realized by solar sailcraft of the first generation. However, even with solar sailcraft of moderate performance, scientifically relevant missions are feasible. This is demonstrated with a Near Earth Asteroid sample return mission and various planetary rendezvous missions.
Navigation technology for exploration of glacier ice with maneuverable melting probes (2016)
Kowalski, Julia ; Linder, Peter ; Zierke, Simon ; von Wulfen, Benedikt ; Clemens, Joachim ; Konstantinidis, Konstantinos ; Ameres, Gerald ; Hoffmann, Ruth ; Mikucki, Jill A. ; Tulaczyk, Slawek M. ; Funke, Oliver ; Blandfort, Daniel ; Espe, Clemens ; Feldmann, Marco ; Francke, Gero ; Hiecker, S. ; Plescher, Engelbert ; Schöngarth, Sarah ; Dachwald, Bernd ; Digel, Ilya ; Artmann, Gerhard ; Eliseev, Dmitry ; Heinen, Dirk ; Scholz, Franziska ; Wiebusch, Christopher H. ; Macht, Sabine ; Bestmann, Ulf ; Reineking, Thomas ; Zetzsche, Christoph ; Schill, Kerstin ; Förstner, Roger ; Niedermeier, Herbert ; Szumski, Arkadiusz ; Eissfeller, Bernd ; Naumann, Uwe ; Helbing, Klaus
The Saturnian moon Enceladus with its extensive water bodies underneath a thick ice sheet cover is a potential candidate for extraterrestrial life. Direct exploration of such extraterrestrial aquatic ecosystems requires advanced access and sampling technologies with a high level of autonomy. A new technological approach has been developed as part of the collaborative research project Enceladus Explorer (EnEx). The concept is based upon a minimally invasive melting probe called the IceMole. The force-regulated, heater-controlled IceMole is able to travel along a curved trajectory as well as upwards. Hence, it allows maneuvers which may be necessary for obstacle avoidance or target selection. Maneuverability, however, necessitates a sophisticated on-board navigation system capable of autonomous operations. The development of such a navigational system has been the focal part of the EnEx project. The original IceMole has been further developed to include relative positioning based on in-ice attitude determination, acoustic positioning, ultrasonic obstacle and target detection integrated through a high-level sensor fusion. This paper describes the EnEx technology and discusses implications for an actual extraterrestrial mission concept.
IceMole - a maneuverable probe for clean in-situ analysis and sampling of subsurface ice and subglacial aquatic ecosystems : extended abstract / SCAR Open Science Conference 2012, Session 29: Advancing Clean Technologies for Exploration of Glacial Aquatic Ecosystems (2012)
Dachwald, Bernd ; Mikucki, Jill A. ; Tulaczyk, Slawek ; Digel, Ilya ; Feldmann, Marco ; Espe, Clemens ; Plescher, Engelbert ; Xu, Changsheng
The ”IceMole“ is a novel maneuverable subsurface ice probe for clean in-situ analysis and sampling of subsurface ice and subglacial water/brine. It is developed and build at FH Aachen University of Applied Sciences’ Astronautical Laboratory. A first prototype was successfully tested on the Swiss Morteratsch glacier in 2010. Clean sampling is achieved with a hollow ice screw (as it is used in mountaineering) at the tip of the probe. Maneuverability is achieved with a differentially heated melting head. Funded by the German Space Agency (DLR), a consortium led by FH Aachen currently develops a much more advanced IceMole probe, which includes a sophisticated system for obstacle avoidance, target detection, and navigation in the ice. We intend to use this probe for taking clean samples of subglacial brine at the Blood Falls (McMurdo Dry Valleys, East Antarctica) for chemical and microbiological analysis. In our conference contribution, we 1) describe the IceMole design, 2) report the results of the field tests of the first prototype on the Morteratsch glacier, 3) discuss the probe’s potential for the clean in-situ analysis and sampling of subsurface ice and subglacial liquids, and 4) outline the way ahead in the development of this technology.
Development and testing of a subsurface probe for detection of life in deep ice : [abstract] (2011)
Dachwald, Bernd ; Xu, Changsheng ; Feldmann, Marco ; Plescher, Engelbert ; Digel, Ilya ; Artmann, Gerhard
We present the novel concept of a combined drilling and melting probe for subsurface ice research. This probe, named “IceMole”, is currently developed, built, and tested at the FH Aachen University of Applied Sciences’ Astronautical Laboratory. Here, we describe its first prototype design and report the results of its field tests on the Swiss Morteratsch glacier. Although the IceMole design is currently adapted to terrestrial glaciers and ice shields, it may later be modified for the subsurface in-situ investigation of extraterrestrial ice, e.g., on Mars, Europa, and Enceladus. If life exists on those bodies, it may be present in the ice (as life can also be found in the deep ice of Earth).
In-situ biological decontamination of an ice melting probe : [abstract] (2010)
Digel, Ilya ; Leimena, W. ; Dachwald, Bernd ; Linder, Peter ; Porst, Dariusz ; Kayser, Peter ; Funke, O. ; Temiz Artmann, Aysegül ; Artmann, Gerhard
The objective of our study was to investigate the efficacy of different in-situ decontamination protocols in the conditions of thermo-mechanical ice-melting.
Solar Sailing Kinetic Energy Impactor (KEI) Mission Design Tradeoffs for Impacting and Deflecting Asteroid 99942 Apophis (2006)
Dachwald, Bernd ; Kahle, Ralph ; Wie, Bong
Solar Sail Trajectory Optimization for the Solar Polar Imager (SPI) Mission (2006)
Dachwald, Bernd ; Ohndorf, A. ; Wie, Bong
Potential Solar Sail Degradation Effects on Trajectory and Attitude Control (2005)
Dachwald, Bernd ; Seboldt, Wolfgang ; Macdonald, Malcolm ; Mengali, Giovanni ; Quatra, Alessandro A. ; McInnes, Colin R. ; Rios-Reyes, Leonel ; Scheerers, Daniel J. ; Wie, Bong ; Görlich, Marianne ; Lura, Franz ; Diedrich, Benjamin ; Baturkin, Volodymyr ; Coverstone, Victoria L. ; Leipold, Manfred ; Garbe, Gregory P.
Multiple Rendezvous and Sample Return Missions to Near-Earth Asteroids Using Solar Sailcraft (2003)
Dachwald, Bernd ; Seboldt, Wolfgang ; Richter, L.
Solar Sail Trajectory Optimization for Intercepting, Impacting, and Deflecting Near-Earth Asteroids (2005)
Dachwald, Bernd ; Wie, Bong
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