@article{DachwaldCarnelliVasile2007, author = {Dachwald, Bernd and Carnelli, I. and Vasile, M.}, title = {Optimizing low-thrust gravity assist interplanetary trajectories using evolutionary neurocontrollers / I. Carnelli ; B. Dachwald ; M. Vasile}, series = {IEEE Congress on Evolutionary Computation, 2007 : CEC 2007 ; 25 - 28 September 2007, Singapore}, journal = {IEEE Congress on Evolutionary Computation, 2007 : CEC 2007 ; 25 - 28 September 2007, Singapore}, publisher = {IEEE Service Center}, address = {Piscataway, NJ}, isbn = {978-1-424-41339-3}, pages = {965 -- 972}, year = {2007}, language = {en} } @article{Wittmann2000, author = {Wittmann, Klaus}, title = {Overview of Space Operations at DLR}, year = {2000}, language = {en} } @article{DachwaldMengaliQuartaetal.2006, author = {Dachwald, Bernd and Mengali, Giovanni and Quarta, Alessandrao A. and Macdonald, Malcolm}, title = {Parametric Model and Optimal Control of Solar Sails with Optical Degradation}, series = {Journal of guidance, control, and dynamics. 29 (2006), H. 5}, journal = {Journal of guidance, control, and dynamics. 29 (2006), H. 5}, isbn = {0162-3192}, pages = {1170 -- 1178}, year = {2006}, language = {en} } @article{FunkeReckerBosschaertsetal.2011, author = {Funke, Harald and Recker, E. and Bosschaerts, W. and Boonen, Q. and B{\"o}rner, Sebastian}, title = {Parametrical study of the „Micromix" hydrogen combustion principle}, series = {10th International Symposium on Experimental and Computational Aerothermodynamics of Internal Flows, ISAIF10-049, Brussels, Belgium, 4-7 July 2011}, journal = {10th International Symposium on Experimental and Computational Aerothermodynamics of Internal Flows, ISAIF10-049, Brussels, Belgium, 4-7 July 2011}, year = {2011}, language = {en} } @article{HavermannHaertigReyetal.2002, author = {Havermann, Marc and Haertig, J. and Rey, C. and George, A.}, title = {Particle image velocimetry in mach 3.5 and 4.5 shock-tunnel flows / Haertig, J. ; Havermann, M. ; Rey, C. ; George, A.}, series = {AIAA journal. 40 (2002), H. 6}, journal = {AIAA journal. 40 (2002), H. 6}, publisher = {-}, isbn = {0001-1452}, pages = {1056 -- 1060}, year = {2002}, language = {en} } @article{SpietzSproewitzSeefeldtetal.2021, author = {Spietz, Peter and Spr{\"o}witz, Tom and Seefeldt, Patric and Grundmann, Jan Thimo and Jahnke, Rico and Mikschl, Tobias and Mikulz, Eugen and Montenegro, Sergio and Reershemius, Siebo and Renger, Thomas and Ruffer, Michael and Sasaki, Kaname and Sznajder, Maciej and T{\´o}th, Norbert and Ceriotti, Matteo and Dachwald, Bernd and Macdonald, Malcolm and McInnes, Colin and Seboldt, Wolfgang and Quantius, Dominik and Bauer, Waldemar and Wiedemann, Carsten and Grimm, Christian D. and Hercik, David and Ho, Tra-Mi and Lange, Caroline and Schmitz, Nicole}, title = {Paths not taken - The Gossamer roadmap's other options}, series = {Advances in Space Research}, volume = {67}, journal = {Advances in Space Research}, number = {9}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0273-1177}, doi = {10.1016/j.asr.2021.01.044}, pages = {2912 -- 2956}, year = {2021}, language = {en} } @article{ScholzRomagnoliDachwaldetal.2011, author = {Scholz, Christina and Romagnoli, Daniele and Dachwald, Bernd and Theil, Stephan}, title = {Performance analysis of an attitude control system for solar sails using sliding masses}, series = {Advances in Space Research}, volume = {48}, journal = {Advances in Space Research}, number = {11}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0273-1177}, pages = {1822 -- 1835}, year = {2011}, language = {en} } @article{HavermannBeylich1997, author = {Havermann, Marc and Beylich, A. E.}, title = {Performance and Limitations of the Laser-Induced Fluorescence Measurement Technique and the Established Experimental Methods for the Study of Supersonic Mixing / Havermann, M. ; Beylich, A. E.}, series = {International Journal of heat and technology. 15 (1997), H. 2}, journal = {International Journal of heat and technology. 15 (1997), H. 2}, publisher = {-}, pages = {3 -- 10}, year = {1997}, language = {en} } @article{BlomeKosbow2004, author = {Blome, Hans-Joachim and Kosbow, Michael}, title = {Perturbation of a satellite orbit by gravitational waves}, series = {Jahrbuch 2004 der Deutschen Gesellschaft f{\"u}r Luft- und Raumfahrt - Lilienthal-Oberth e.V. (DGLR)}, journal = {Jahrbuch 2004 der Deutschen Gesellschaft f{\"u}r Luft- und Raumfahrt - Lilienthal-Oberth e.V. (DGLR)}, publisher = {DGLR}, address = {Bonn}, isbn = {0070-4083}, pages = {2083 -- 2088}, year = {2004}, language = {en} } @article{GoettenFinger2020, author = {G{\"o}tten, Falk and Finger, Felix}, title = {PhoenAIX - Die modulare Transportdrohne}, series = {Ingenieurspiegel}, volume = {2020}, journal = {Ingenieurspiegel}, number = {1}, publisher = {Public Verlag}, address = {Bingen}, isbn = {1868-5919}, pages = {38 -- 40}, year = {2020}, abstract = {Die autonome, unbemannte Luftfahrt ist einer der Schl{\"u}sselsektoren f{\"u}r die Zukunft der Luftfahrt. In diesem rasant wachsenden Bereich nehmen senkrecht startende und senkrecht landende Flugzeuge (Vertical Take-Off and Landing - VTOL) einen besonderen Platz ein. Ein VTOL-Flugzeug (manchmal auch „Transitionsflugger{\"a}t" genannt) verbindet die Eigenschaft des Helikopters, {\"u}berall starten und landen zu k{\"o}nnen, mit den Geschwindigkeits-, Reichweiten und Flugdauervorteilen des Starrfl{\"u}glers. Grunds{\"a}tzlich wird die Senkrechtstart- und -landef{\"a}higkeit sowohl von zivilen als auch von milit{\"a}rischen Betreibern unbemannter Flugger{\"a}te (UAVs) gew{\"u}nscht. Trotzdem bietet der Markt nur eine geringe Anzahl von VTOL-UAVs, da qualitativ hochwertige Entw{\"u}rfe eine ausgesprochene Herausforderung in der Entwicklung darstellen. An der FH Aachen wird deshalb seit {\"u}ber 5 Jahren an der Auslegung und Analyse von solchen unbemannten VTOL Flugzeugen geforscht. Das neuste Projekt ist der Eigenentwurf einer großen, senkrechtstartenden Transportdrohne. Das „PhoenAIX" getaufte Flugger{\"a}t wird von Falk G{\"o}tten und Felix Finger im Rahmen einer EFRE-F{\"o}rderung entwickelt.}, language = {de} } @article{HeiligersSchoutetensDachwald2021, author = {Heiligers, Jeannette and Schoutetens, Frederic and Dachwald, Bernd}, title = {Photon-sail equilibria in the alpha centauri system}, series = {Journal of Guidance, Control, and Dynamics}, volume = {44}, journal = {Journal of Guidance, Control, and Dynamics}, number = {5}, issn = {1533-3884}, doi = {10.2514/1.G005446}, pages = {1053 -- 1061}, year = {2021}, language = {en} } @article{Gerhardt2005, author = {Gerhardt, Hans Joachim}, title = {Physikalische Modelle f{\"u}r Brandsicherheitsnachweise = physical models for fire safety design}, series = {Kurzreferate : Hannover, 6. und 7. Juni 2005 = Proceedings / [Veranst.: VFDB, Vereinigung zur F{\"o}rderung des Deutschen Brandschutzes e.V.; iBMB, Institut f{\"u}r Baustoffe, Massivbau und Brandschutz der Technischen Universit{\"a}t Braunschweig]. Hrsg.: Dietmar Hosser}, journal = {Kurzreferate : Hannover, 6. und 7. Juni 2005 = Proceedings / [Veranst.: VFDB, Vereinigung zur F{\"o}rderung des Deutschen Brandschutzes e.V.; iBMB, Institut f{\"u}r Baustoffe, Massivbau und Brandschutz der Technischen Universit{\"a}t Braunschweig]. Hrsg.: Dietmar Hosser}, publisher = {iBMB}, address = {Braunschweig}, isbn = {3-89288-165-0}, pages = {135 -- 154}, year = {2005}, language = {de} } @article{Gerhardt1992, author = {Gerhardt, Hans Joachim}, title = {Physikalische und brandschutztechnische Grundlagen des Rauch- und W{\"a}rmeabzugs}, series = {VDI-Berichte. 983 (1992)}, journal = {VDI-Berichte. 983 (1992)}, isbn = {0083-5560}, pages = {51 -- 69}, year = {1992}, language = {de} } @article{StadlerGarveyEmbsetal.2014, author = {Stadler, Alexander Maximilian and Garvey, Christopher J. and Embs, Jan Peter and Koza, Michael Marek and Unruh, Tobias and Artmann, Gerhard and Zaccai, Guiseppe}, title = {Picosecond dynamics in haemoglobin from different species: A quasielastic neutron scattering study}, series = {Biochimica et biophysica acta (BBA): General Subjects}, volume = {1840}, journal = {Biochimica et biophysica acta (BBA): General Subjects}, number = {10}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1872-8006 (E-Journal); 0304-4165 (Print)}, doi = {10.1016/j.bbagen.2014.06.007}, pages = {2989 -- 2999}, year = {2014}, language = {en} } @article{HavermannHaertigReyetal.2001, author = {Havermann, Marc and Haertig, J. and Rey, C. and George, F.}, title = {PIV measurements in Mach 3.5 and 4.5 shock tunnel flow / Haertig, J. ; Havermann, M. ; Rey, C. ; George, F.}, publisher = {-}, year = {2001}, language = {en} } @article{HavermannHaertigReyetal.2008, author = {Havermann, Marc and Haertig, J. and Rey, C. and George, A.}, title = {PIV Measurements in Shock Tunnels and Shock Tubes / Havermann, M. ; Haertig, J. ; Rey, C. ; George, A.}, series = {Particle Image Velocimetry : New Developments and Recent Applications}, journal = {Particle Image Velocimetry : New Developments and Recent Applications}, publisher = {Springer}, address = {Berlin}, isbn = {978-3-540-73528-1}, pages = {429 -- 442}, year = {2008}, language = {en} } @article{HavermannSeilerGeorgeetal.2003, author = {Havermann, Marc and Seiler, F. and George, A. and Leopold, F.}, title = {Planar Velocity Visualization in High-Speed Wedge Flow using Doppler Picture Velocimetry (DPV) compared with Particle Image Velocimetry (PIV) / Seiler, F. ; Havermann, M. ; George, A. ; Leopold, F. ; Srulijes, J.}, series = {Journal of Visualization. 6 (2003), H. 3}, journal = {Journal of Visualization. 6 (2003), H. 3}, publisher = {-}, isbn = {1343-8875}, pages = {253 -- 262}, year = {2003}, language = {en} } @article{DachwaldBaturkinCoverstoneetal.2006, author = {Dachwald, Bernd and Baturkin, Volodymyr and Coverstone, Victoria L. and Dietrich, Benjamin and Garbe, Gregory P. and G{\"o}rlich, Marianne and Leipold, Manfred and Lura, Franz and Macdonald, Malcolm and McInnes, Colin R. and Mengali, Giovanni and Quatra, Alessandro A. and Rios-Reyes, Leonel and Scheeres, Daniel J. and Seboldt, Wolfgang and Wie, Bong}, title = {Potential Effects of Optical Solar Sail Degradation on Interplanetary Trajectory Design}, series = {Astrodynamics 2005 : proceedings of the AAS/AIAA astrodynamics conference held August 7 - 11, 2005, South Lake Tahoe, California / ed. by Bobby G. Williams. - Pt. 3. - (Advances in the astronautical sciences ; 123,3)}, journal = {Astrodynamics 2005 : proceedings of the AAS/AIAA astrodynamics conference held August 7 - 11, 2005, South Lake Tahoe, California / ed. by Bobby G. Williams. - Pt. 3. - (Advances in the astronautical sciences ; 123,3)}, publisher = {Univelt}, address = {San Diego, Calif.}, isbn = {0-87703-527-X}, pages = {2569 -- 2592}, year = {2006}, language = {en} } @article{DachwaldSeboldtMacdonaldetal.2005, author = {Dachwald, Bernd and Seboldt, Wolfgang and Macdonald, Malcolm and Mengali, Giovanni and Quatra, Alessandro A. and McInnes, Colin R. and Rios-Reyes, Leonel and Scheerers, Daniel J. and Wie, Bong and G{\"o}rlich, Marianne and Lura, Franz and Diedrich, Benjamin and Baturkin, Volodymyr and Coverstone, Victoria L. and Leipold, Manfred and Garbe, Gregory P.}, title = {Potential Solar Sail Degradation Effects on Trajectory and Attitude Control}, series = {AIAA Guidance, Navigation and Control Conference and Exhibit - AIAA Modeling and Simulation Technologies Conference and Exhibit - AIAA Atmospheric Flight Mechanics Conference and Exhibit : [San Francisco, California, 15 - 18 August 2005 ; papers]. - (AIAA meeting papers on disc ; [10.]2005,16-17)}, journal = {AIAA Guidance, Navigation and Control Conference and Exhibit - AIAA Modeling and Simulation Technologies Conference and Exhibit - AIAA Atmospheric Flight Mechanics Conference and Exhibit : [San Francisco, California, 15 - 18 August 2005 ; papers]. - (AIAA meeting papers on disc ; [10.]2005,16-17)}, publisher = {American Institute of Aeronautics and Astronautics}, address = {Reston, Va.}, isbn = {1-56347-765-3}, pages = {2 CD-ROMs}, year = {2005}, language = {en} } @article{FunkeEschRoosen2022, author = {Funke, Harald and Esch, Thomas and Roosen, Petra}, title = {Powertrain Adaptions for LPG Usage in General Aviation}, series = {MTZ worldwide}, volume = {2022}, journal = {MTZ worldwide}, number = {83}, publisher = {Springer Nature}, address = {Basel}, doi = {10.1007/s38313-021-0756-6}, pages = {58 -- 62}, year = {2022}, abstract = {In general aviation, too, it is desirable to be able to operate existing internal combustion engines with fuels that produce less CO₂ than Avgas 100LL being widely used today It can be assumed that, in comparison, the fuels CNG, LPG or LNG, which are gaseous under normal conditions, produce significantly lower emissions. Necessary propulsion system adaptations were investigated as part of a research project at Aachen University of Applied Sciences.}, language = {en} } @article{KezerashviliDachwald2021, author = {Kezerashvili, Roman Ya and Dachwald, Bernd}, title = {Preface: Solar sailing: Concepts, technology, and missions II}, series = {Advances in Space Research}, volume = {67}, journal = {Advances in Space Research}, number = {9}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0273-1177}, doi = {10.1016/j.asr.2021.01.037}, pages = {2559 -- 2560}, year = {2021}, language = {en} } @article{ThomaThomessenGardietal.2023, author = {Thoma, Andreas and Thomessen, Karolin and Gardi, Alessandro and Fisher, A. and Braun, Carsten}, title = {Prioritising paths: An improved cost function for local path planning for UAV in medical applications}, series = {The Aeronautical Journal}, journal = {The Aeronautical Journal}, number = {First View}, publisher = {Cambridge University Press}, address = {Cambridge}, issn = {0001-9240 (Print)}, doi = {10.1017/aer.2023.68}, pages = {1 -- 18}, year = {2023}, abstract = {Even the shortest flight through unknown, cluttered environments requires reliable local path planning algorithms to avoid unforeseen obstacles. The algorithm must evaluate alternative flight paths and identify the best path if an obstacle blocks its way. Commonly, weighted sums are used here. This work shows that weighted Chebyshev distances and factorial achievement scalarising functions are suitable alternatives to weighted sums if combined with the 3DVFH* local path planning algorithm. Both methods considerably reduce the failure probability of simulated flights in various environments. The standard 3DVFH* uses a weighted sum and has a failure probability of 50\% in the test environments. A factorial achievement scalarising function, which minimises the worst combination of two out of four objective functions, reaches a failure probability of 26\%; A weighted Chebyshev distance, which optimises the worst objective, has a failure probability of 30\%. These results show promise for further enhancements and to support broader applicability.}, language = {en} } @article{HavermannSeilerGeorgesetal.2008, author = {Havermann, Marc and Seiler, F. and Georges, A. and Srulijes, J.}, title = {Progress in Doppler picture velocimetry (DPV) / Seiler, F. ; George, A. ; Srulijes, J. ; Havermann, M.}, series = {Experiments in Fluids. 44 (2008), H. 3}, journal = {Experiments in Fluids. 44 (2008), H. 3}, publisher = {-}, isbn = {1432-1114}, pages = {389 -- 395}, year = {2008}, language = {en} } @article{BlomeSeboldtDachwaldetal.2004, author = {Blome, Hans-Joachim and Seboldt, Wolfgang and Dachwald, Bernd and Richter, Lutz}, title = {Proposal for an integrated European Space Exploration Study}, series = {Space Debris and Space Traffic Management Symposium 2004 : proceedings of the International Academy of Astronautics Space Debris and Space Traffic Management Symposium, held in conjunction with the 55th International Astronautical Congress (IAC), October 4 - 8, 2004, Vancouver, British Columbia, Canada / ed. by Joerg Bendisch}, journal = {Space Debris and Space Traffic Management Symposium 2004 : proceedings of the International Academy of Astronautics Space Debris and Space Traffic Management Symposium, held in conjunction with the 55th International Astronautical Congress (IAC), October 4 - 8, 2004, Vancouver, British Columbia, Canada / ed. by Joerg Bendisch}, publisher = {Univelt}, address = {San Diego, Calif.}, isbn = {0-87703-523-7}, pages = {XI, 432 S. : Ill., graph. Darst.}, year = {2004}, language = {en} } @article{BlomeMashhoon1984, author = {Blome, Hans-Joachim and Mashhoon, B.}, title = {Quasi-normal oscillations of a Schwarzschild black hole}, series = {Physics Letters A. 100 (1984), H. 5}, journal = {Physics Letters A. 100 (1984), H. 5}, isbn = {0375-9601}, pages = {231 -- 234}, year = {1984}, language = {en} } @article{ChristenKowalskiBartelt2010, author = {Christen, Marc and Kowalski, Julia and Bartelt, Perry}, title = {RAMMS: Numerical simulation of dense snow avalanches in three-dimensional terrain}, series = {Cold Regions Science and Technology}, volume = {63}, journal = {Cold Regions Science and Technology}, number = {1-2}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1872-7441}, doi = {10.1016/j.coldregions.2010.04.005}, pages = {1 -- 14}, year = {2010}, abstract = {Numerical avalanche dynamics models have become an essential part of snow engineering. Coupled with field observations and historical records, they are especially helpful in understanding avalanche flow in complex terrain. However, their application poses several new challenges to avalanche engineers. A detailed understanding of the avalanche phenomena is required to construct hazard scenarios which involve the careful specification of initial conditions (release zone location and dimensions) and definition of appropriate friction parameters. The interpretation of simulation results requires an understanding of the numerical solution schemes and easy to use visualization tools. We discuss these problems by presenting the computer model RAMMS, which was specially designed by the SLF as a practical tool for avalanche engineers. RAMMS solves the depth-averaged equations governing avalanche flow with accurate second-order numerical solution schemes. The model allows the specification of multiple release zones in three-dimensional terrain. Snow cover entrainment is considered. Furthermore, two different flow rheologies can be applied: the standard Voellmy-Salm (VS) approach or a random kinetic energy (RKE) model, which accounts for the random motion and inelastic interaction between snow granules. We present the governing differential equations, highlight some of the input and output features of RAMMS and then apply the models with entrainment to simulate two well-documented avalanche events recorded at the Vall{\´e}e de la Sionne test site.}, language = {en} } @article{GoettenHavermannBraunetal.2019, author = {G{\"o}tten, Falk and Havermann, Marc and Braun, Carsten and Gomez, Francisco and Bil, Cees}, title = {RANS Simulation Validation of a Small Sensor Turret for UAVs}, series = {Journal of Aerospace Engineering}, volume = {32}, journal = {Journal of Aerospace Engineering}, number = {5}, publisher = {ASCE}, address = {New York}, issn = {1943-5525}, doi = {10.1061/(ASCE)AS.1943-5525.0001055}, pages = {Article number 04019060}, year = {2019}, abstract = {Recent Unmanned Aerial Vehicle (UAV) design procedures rely on full aircraft steady-state Reynolds-Averaged-Navier-Stokes (RANS) analyses in early design stages. Small sensor turrets are included in such simulations, even though their aerodynamic properties show highly unsteady behavior. Very little is known about the effects of this approach on the simulation outcomes of small turrets. Therefore, the flow around a model turret at a Reynolds number of 47,400 is simulated with a steady-state RANS approach and compared to experimental data. Lift, drag, and surface pressure show good agreement with the experiment. The RANS model predicts the separation location too far downstream and shows a larger recirculation region aft of the body. Both characteristic arch and horseshoe vortex structures are visualized and qualitatively match the ones found by the experiment. The Reynolds number dependence of the drag coefficient follows the trend of a sphere within a distinct range. The outcomes indicate that a steady-state RANS model of a small sensor turret is able to give results that are useful for UAV engineering purposes but might not be suited for detailed insight into flow properties.}, language = {en} } @article{GerhardtKramer1992, author = {Gerhardt, Hans Joachim and Kramer, C.}, title = {Rauch- und W{\"a}rmeabzug - physikalische Grundlagen und Anwendungen}, series = {vfdb-Zeitschrift. 41 (1992), H. 2}, journal = {vfdb-Zeitschrift. 41 (1992), H. 2}, isbn = {0042-1804}, pages = {49 -- 54}, year = {1992}, language = {de} } @article{GerhardtKonrath2003, author = {Gerhardt, Hans Joachim and Konrath, Bernd}, title = {Rauchableitung in unterirdischen Verkehrsanlagen. M{\"o}glichkeiten und Hinweise zur Ausf{\"u}hrung.}, series = {vfdb-Zeitschrift. 52 (2003), H. 2}, journal = {vfdb-Zeitschrift. 52 (2003), H. 2}, isbn = {0042-1804}, pages = {59 -- 65}, year = {2003}, language = {de} } @article{Gerhardt2003, author = {Gerhardt, Hans Joachim}, title = {Rauchableitung und deren Effektivit{\"a}t in der 4. Elbtunnelr{\"o}hre}, series = {tunnel - Internationale Fachzeitschrift f{\"u}r unterirdisches Bauen (2003)}, journal = {tunnel - Internationale Fachzeitschrift f{\"u}r unterirdisches Bauen (2003)}, isbn = {0722-6241}, pages = {19 -- 28}, year = {2003}, language = {de} } @article{GerhardtSchmidtJung2002, author = {Gerhardt, Hans Joachim and Schmidt, G. and Jung, G.}, title = {Rauchversuch in einem Hochregallager}, series = {Bautechnik. 79 (2002), H. 6}, journal = {Bautechnik. 79 (2002), H. 6}, isbn = {0932-8351}, pages = {414 -- 417}, year = {2002}, language = {de} } @article{GerhardtJungSchmidt2002, author = {Gerhardt, Hans Joachim and Jung, G. and Schmidt, G.}, title = {Rauchversuch in einem Hochregallager. Die aerodynamisch wirksame {\"O}ffnungsfl{\"a}che f{\"u}r den Rauchabzug in Hochregallagern und ihr Einfluss auf die L{\"o}scharbeiten der Feuerwehr}, series = {vfdb-Zeitschrift. 51 (2002), H. 1}, journal = {vfdb-Zeitschrift. 51 (2002), H. 1}, isbn = {0042-1804}, pages = {21 -- 25}, year = {2002}, language = {de} } @article{Blome2000, author = {Blome, Hans-Joachim}, title = {Raumfahrt - zwischen Himmel und Erde}, series = {Technologien f{\"u}r das 21. Jahrhundert / [red. Leitung: Birgit Strackenbrock ...]}, journal = {Technologien f{\"u}r das 21. Jahrhundert / [red. Leitung: Birgit Strackenbrock ...]}, publisher = {Brockhaus}, address = {Leipzig [u.a.]}, isbn = {376537945X}, pages = {572 -- 679}, year = {2000}, language = {de} } @article{Blome2001, author = {Blome, Hans-Joachim}, title = {Raumfahrt und Exploration des Kosmos}, series = {Mensch, Leben, Schwerkraft, Kosmos : Perspektiven biowissenschaftlicher Weltraumforschung in Deutschland ; Berichtsband einer Klausurtagung vom 20. - 22.10.2000 in Stuttgart-Hohenheim/Birkach / Hinrich Rahmann ... (Hrsg.). [Ausgerichtet von der Deutschen Gesellschaft f{\"u}r Luft- und Raumfahrt medizin]}, journal = {Mensch, Leben, Schwerkraft, Kosmos : Perspektiven biowissenschaftlicher Weltraumforschung in Deutschland ; Berichtsband einer Klausurtagung vom 20. - 22.10.2000 in Stuttgart-Hohenheim/Birkach / Hinrich Rahmann ... (Hrsg.). [Ausgerichtet von der Deutschen Gesellschaft f{\"u}r Luft- und Raumfahrt medizin]}, publisher = {Heimbach}, address = {Stuttgart}, isbn = {3-935380-03-8}, pages = {80 -- 105}, year = {2001}, language = {de} } @article{Bullerschen1990, author = {Bullerschen, Klaus-Gerd}, title = {Rechenmodelle zur Stromverdr{\"a}ngung in ein- und mehrphasigen elektrischen Leitungen komplexer Geometrie}, series = {Elektrow{\"a}rme International, Edition B (Industrielle Elektrow{\"a}rme). 48 (1990), H. 4}, journal = {Elektrow{\"a}rme International, Edition B (Industrielle Elektrow{\"a}rme). 48 (1990), H. 4}, isbn = {0340-3521}, pages = {199 -- 210}, year = {1990}, language = {de} } @article{DachwaldMengaliQuartaetal.2007, author = {Dachwald, Bernd and Mengali, Giovanni and Quarta, Alessandro A. and Circi, Christian}, title = {Refined Solar Sail Force Model with Mission Application / Giovanni Mengali ; Alessandro A. Quarta , Christian Circi ; Bernd Dachwald}, series = {Journal of Guidance, Control, and Dynamics. 30 (2007), H. 2}, journal = {Journal of Guidance, Control, and Dynamics. 30 (2007), H. 2}, isbn = {0162-3192}, pages = {512 -- 520}, year = {2007}, language = {en} } @article{Mertens1998, author = {Mertens, Josef}, title = {Required technologies for supersonic aircraft}, series = {Fluid dynamics research on supersonic aircraft : this report is a compilation of the edited proceedings of the special course on "Fluid dynamic research on supersonic aircraft" held at the Karman Institute for Fluid Dynamics (VKI) in Rhode-Saint-Genese, Belgium, 25-29 May 1998}, journal = {Fluid dynamics research on supersonic aircraft : this report is a compilation of the edited proceedings of the special course on "Fluid dynamic research on supersonic aircraft" held at the Karman Institute for Fluid Dynamics (VKI) in Rhode-Saint-Genese, Belgium, 25-29 May 1998}, publisher = {Research and Technology Organization}, address = {Neuilly-sur-Seine}, isbn = {92-837-1007-X}, pages = {5.1 -- 5.16}, year = {1998}, language = {en} } @article{SmithKotliarLammertynetal.2020, author = {Smith, Wayne and Kotliar, Konstantin and Lammertyn, Leandi and Ramoshaba, Nthai E. and Vilser, Walthard and Huisman, Hugo W. and Schutte, Aletta E.}, title = {Retinal vessel caliber and caliber responses in true normotensive black and white adults: The African-PREDICT study}, series = {Microvascular Research}, volume = {128}, journal = {Microvascular Research}, number = {Article 103937}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0026-2862}, doi = {10.1016/j.mvr.2019.103937}, year = {2020}, abstract = {Purpose Globally, a detrimental shift in cardiovascular disease risk factors and a higher mortality level are reported in some black populations. The retinal microvasculature provides early insight into the pathogenesis of systemic vascular diseases, but it is unclear whether retinal vessel calibers and acute retinal vessel functional responses differ between young healthy black and white adults. Methods We included 112 black and 143 white healthy normotensive adults (20-30 years). Retinal vessel calibers (central retinal artery and vein equivalent (CRAE and CRVE)) were calculated from retinal images and vessel caliber responses to flicker light induced provocation (FLIP) were determined. Additionally, ambulatory blood pressure (BP), anthropometry and blood samples were collected. Results The groups displayed similar 24 h BP profiles and anthropometry (all p > .24). Black participants demonstrated a smaller CRAE (158 ± 11 vs. 164 ± 11 MU, p < .001) compared to the white group, whereas CRVE was similar (p = .57). In response to FLIP, artery maximal dilation was greater in the black vs. white group (5.6 ± 2.1 vs. 3.3 ± 1.8\%; p < .001). Conclusions Already at a young age, healthy black adults showed narrower retinal arteries relative to the white population. Follow-up studies are underway to show if this will be related to increased risk for hypertension development. The reason for the larger vessel dilation responses to FLIP in the black population is unclear and warrants further investigation.}, language = {en} } @article{WittmannFeuerbacherUlamecetal.1999, author = {Wittmann, Klaus and Feuerbacher, B. and Ulamec, S. and Rosenbauer, H. (u.a.)}, title = {Rosetta Lander - In Situ Characterisation of a Comet Nucleus}, series = {Acta Astronautica. 45 (1999), H. 4-9}, journal = {Acta Astronautica. 45 (1999), H. 4-9}, isbn = {0094-5765}, pages = {389 -- 395}, year = {1999}, language = {en} } @article{WittmannUlamecFeuerbacheretal.1997, author = {Wittmann, Klaus and Ulamec, S. and Feuerbacher, B. and Rosenbauer, H. (u.a.)}, title = {Rosetta Lander - In Situ Investigation of a Cometary Nucleus}, series = {Lunar and Planetary Science. 28 (1997)}, journal = {Lunar and Planetary Science. 28 (1997)}, isbn = {0270-9511}, pages = {1461 -- 1462}, year = {1997}, language = {en} } @article{Gerhardt1999, author = {Gerhardt, Hans Joachim}, title = {RWA-Einbau in Geb{\"a}udew{\"a}nden}, series = {Brandschutz in {\"o}ffentlichen und privaten Geb{\"a}uden (1999)}, journal = {Brandschutz in {\"o}ffentlichen und privaten Geb{\"a}uden (1999)}, pages = {46 -- 48}, year = {1999}, language = {de} } @article{LasaiKolmWahleetal.2000, author = {Lasai, Sven and Kolm, Heiko and Wahle, Michael and Pohl, Reiner}, title = {Schwingungsanalyse von Subsystemen mit Hilfe der Simulation}, series = {Automobiltechnische Zeitschrift - ATZ}, volume = {102}, journal = {Automobiltechnische Zeitschrift - ATZ}, number = {4}, isbn = {0001-2785}, pages = {266 -- 270}, year = {2000}, language = {de} } @article{Finger2016, author = {Finger, Felix}, title = {Senkrechtstarter: FH-Absolvent wird f{\"u}r Transportdrohne ausgezeichnet}, series = {campushunter: das etwas andere Karrieremagazin - Wintersemester 16/17}, journal = {campushunter: das etwas andere Karrieremagazin - Wintersemester 16/17}, number = {17. Regionalausgabe Aachen}, publisher = {Campushunter Media}, address = {Heidelberg}, issn = {2196-9426}, pages = {116 -- 117}, year = {2016}, language = {de} } @article{BuehlerChristenKowalskietal.2011, author = {B{\"u}hler, Yves and Christen, Marc and Kowalski, Julia and Bartelt, Perry}, title = {Sensitivity of snow avalanche simulations to digital elevation model quality and resolution}, series = {Annals of Glaciology}, volume = {52}, journal = {Annals of Glaciology}, number = {58}, publisher = {Cambridge University Press}, address = {Cambridge}, isbn = {1727-5644}, pages = {72 -- 80}, year = {2011}, abstract = {Digital elevation models (DEMs), represent the three-dimensional terrain and are the basic input for numerical snow avalanche dynamics simulations. DEMs can be acquired using topographic maps or remote-sensing technologies, such as photogrammetry or lidar. Depending on the acquisition technique, different spatial resolutions and qualities are achieved. However, there is a lack of studies that investigate the sensitivity of snow avalanche simulation algorithms to the quality and resolution of DEMs. Here, we perform calculations using the numerical avalance dynamics model RAMMS, varying the quality and spatial resolution of the underlying DEMs, while holding the simulation parameters constant. We study both channelized and open-terrain avalanche tracks with variable roughness. To quantify the variance of these simulations, we use well-documented large-scale avalanche events from Davos, Switzerland (winter 2007/08), and from our large-scale avalanche test site, Valĺee de la Sionne (winter 2005/06). We find that the DEM resolution and quality is critical for modeled flow paths, run-out distances, deposits, velocities and impact pressures. Although a spatial resolution of ~25 m is sufficient for large-scale avalanche modeling, the DEM datasets must be checked carefully for anomalies and artifacts before using them for dynamics calculations.}, language = {en} } @article{KowalskiMcElwaine2013, author = {Kowalski, Julia and McElwaine, Jim N.}, title = {Shallow two-component gravity-driven flows with vertical variation}, series = {Journal of Fluid Mechanics}, volume = {714}, journal = {Journal of Fluid Mechanics}, publisher = {Cambridge Univ. Press}, address = {Cambridge}, isbn = {0022-1120}, pages = {434 -- 462}, year = {2013}, language = {en} } @article{HavermannEndeSeileretal.2005, author = {Havermann, Marc and Ende, H. and Seiler, F. and Schwenzer, M.}, title = {Shock tunnel measurement of the interaction amplification factor for a hot gas side jet in a supersonic cross flow / Havermann, M. ; Ende, H. ; Seiler, F. ; Schwenzer, M.}, series = {Shock Waves : Proceedings of the 24th International Symposium on Shock Waves Beijing, China July 11-16, 2004 / edited by Z. Jiang}, journal = {Shock Waves : Proceedings of the 24th International Symposium on Shock Waves Beijing, China July 11-16, 2004 / edited by Z. Jiang}, publisher = {Springer}, address = {Berlin}, isbn = {978-3-540-22497-6}, pages = {113 -- 118}, year = {2005}, language = {en} } @article{ThomaRavi2019, author = {Thoma, Andreas and Ravi, Sridhar}, title = {Significance of parallel computing on the performance of Digital Image Correlation algorithms in MATLAB}, pages = {1 -- 17}, year = {2019}, abstract = {Digital Image Correlation (DIC) is a powerful tool used to evaluate displacements and deformations in a non-intrusive manner. By comparing two images, one of the undeformed reference state of a specimen and another of the deformed target state, the relative displacement between those two states is determined. DIC is well known and often used for post-processing analysis of in-plane displacements and deformation of specimen. Increasing the analysis speed to enable real-time DIC analysis will be beneficial and extend the field of use of this technique. Here we tested several combinations of the most common DIC methods in combination with different parallelization approaches in MATLAB and evaluated their performance to determine whether real-time analysis is possible with these methods. To reflect improvements in computing technology different hardware settings were also analysed. We found that implementation problems can reduce the efficiency of a theoretically superior algorithm such that it becomes practically slower than a suboptimal algorithm. The Newton-Raphson algorithm in combination with a modified Particle Swarm algorithm in parallel image computation was found to be most effective. This is contrary to theory, suggesting that the inverse-compositional Gauss-Newton algorithm is superior. As expected, the Brute Force Search algorithm is the least effective method. We also found that the correct choice of parallelization tasks is crucial to achieve improvements in computing speed. A poorly chosen parallelisation approach with high parallel overhead leads to inferior performance. Finally, irrespective of the computing mode the correct choice of combinations of integerpixel and sub-pixel search algorithms is decisive for an efficient analysis. Using currently available hardware realtime analysis at high framerates remains an aspiration.}, language = {en} } @article{WahleWeber2002, author = {Wahle, Michael and Weber, M.}, title = {Simulationsmodell zur Darstellung der Eigenschaften von Fahrzeug-Stoßd{\"a}mpfern bei beliebiger dynamischer Belastung, Simulationsmodell f{\"u}r Stoßd{\"a}mpfer}, year = {2002}, language = {de} } @article{DachwaldWi2007, author = {Dachwald, Bernd and Wi, Bong}, title = {Solar Sail Kinetic Energy Impactor Trajectory Optimization for an Asteroid-Deflection Mission}, series = {Journal of Spacecraft and Rockets. 44 (2007), H. 4}, journal = {Journal of Spacecraft and Rockets. 44 (2007), H. 4}, isbn = {0022-4650}, pages = {755 -- 764}, year = {2007}, language = {en} } @article{DachwaldSeboldtLaemmerzahl2008, author = {Dachwald, Bernd and Seboldt, W. and L{\"a}mmerzahl, W.}, title = {Solar Sail Propulsion: An Enabling Technology for Fundamental Physics Missions}, series = {Lasers, Clocks and Drag Free Control : Exploration of Relativistic Gravity in Space / by Hansj{\"o}rg Dittus ..., eds. - ( Astrophysics and Space Science Library ; 349)}, journal = {Lasers, Clocks and Drag Free Control : Exploration of Relativistic Gravity in Space / by Hansj{\"o}rg Dittus ..., eds. - ( Astrophysics and Space Science Library ; 349)}, publisher = {Springer}, address = {Berlin [u.a.]}, isbn = {978-3-540-34376-9}, pages = {379 -- 398}, year = {2008}, language = {en} } @article{DachwaldWie2005, author = {Dachwald, Bernd and Wie, Bong}, title = {Solar Sail Trajectory Optimization for Intercepting, Impacting, and Deflecting Near-Earth Asteroids}, series = {AIAA Guidance, Navigation and Control Conference and Exhibit - AIAA Modeling and Simulation Technologies Conference and Exhibit - AIAA Atmospheric Flight Mechanics Conference and Exhibit : [San Francisco, California, 15 - 18 August 2005 ; papers]. - (AIAA meeting papers on disc ; [10.]2005,16-17)}, journal = {AIAA Guidance, Navigation and Control Conference and Exhibit - AIAA Modeling and Simulation Technologies Conference and Exhibit - AIAA Atmospheric Flight Mechanics Conference and Exhibit : [San Francisco, California, 15 - 18 August 2005 ; papers]. - (AIAA meeting papers on disc ; [10.]2005,16-17)}, publisher = {American Institute of Aeronautics and Astronautics}, address = {Reston, Va.}, isbn = {1-56347-765-3}, pages = {2 CD-ROMs}, year = {2005}, language = {en} } @article{DachwaldOhndorfWie2006, author = {Dachwald, Bernd and Ohndorf, A. and Wie, Bong}, title = {Solar Sail Trajectory Optimization for the Solar Polar Imager (SPI) Mission}, series = {AIAA Guidance, Navigation, and Control Conference \& Exhibit - AIAA Atmospheric Flight Mechanics Conference \& Exhibit - AIAA Modeling and Simulation Technologies Conference \& Exhibit - AIAA/AAS Astrodynamics Specialist Conference \& Exhibit : [21 - 24 August 2006, Keystone, Colorado ; papers]. - (AIAA meeting papers on disc ; [11.]2006,19-20 )}, journal = {AIAA Guidance, Navigation, and Control Conference \& Exhibit - AIAA Atmospheric Flight Mechanics Conference \& Exhibit - AIAA Modeling and Simulation Technologies Conference \& Exhibit - AIAA/AAS Astrodynamics Specialist Conference \& Exhibit : [21 - 24 August 2006, Keystone, Colorado ; papers]. - (AIAA meeting papers on disc ; [11.]2006,19-20 )}, publisher = {American Institute of Aeronautics and Astronautics}, address = {Reston, Va.}, isbn = {1-56347-802-1}, pages = {2 CD-ROMs.}, year = {2006}, language = {en} } @article{DachwaldSeboldt2003, author = {Dachwald, Bernd and Seboldt, Wolfgang}, title = {Solar sailcraft of the first generation mission applications to near-earth asteroids}, year = {2003}, language = {en} } @article{DachwaldSeboldt2003, author = {Dachwald, Bernd and Seboldt, Wolfgang}, title = {Solar sailcraft of the first generation technology development / Seboldt, Wolfgang ; Dachwald, Bernd}, year = {2003}, language = {en} } @article{DachwaldKahleWie2006, author = {Dachwald, Bernd and Kahle, Ralph and Wie, Bong}, title = {Solar Sailing Kinetic Energy Impactor (KEI) Mission Design Tradeoffs for Impacting and Deflecting Asteroid 99942 Apophis}, series = {AIAA Guidance, Navigation, and Control Conference \& Exhibit - AIAA Atmospheric Flight Mechanics Conference \& Exhibit - AIAA Modeling and Simulation Technologies Conference \& Exhibit - AIAA/AAS Astrodynamics Specialist Conference \& Exhibit : [21 - 24 August 2006, Keystone, Colorado ; papers]. - (AIAA meeting papers on disc ; [11.]2006,19-20 )}, journal = {AIAA Guidance, Navigation, and Control Conference \& Exhibit - AIAA Atmospheric Flight Mechanics Conference \& Exhibit - AIAA Modeling and Simulation Technologies Conference \& Exhibit - AIAA/AAS Astrodynamics Specialist Conference \& Exhibit : [21 - 24 August 2006, Keystone, Colorado ; papers]. - (AIAA meeting papers on disc ; [11.]2006,19-20 )}, publisher = {American Institute of Aeronautics and Astronautics}, address = {Reston, Va.}, isbn = {1-56347-802-1}, pages = {1 -- 20}, year = {2006}, language = {en} } @article{DachwaldSeboldt2005, author = {Dachwald, Bernd and Seboldt, W.}, title = {Solar Sails for Near- and Medium-Term Scientific Deep Space Missions / W. Sebolt ; B. Dachwald}, series = {In-space propulsion : edited book of proceedings of the 10-IWCP, the 10th International Workshop on Combustion and Propulsion held in Lerici, La Spezia, Italy, 21-25 September 2003 / [ed.: Luigi T. DeLuca]}, journal = {In-space propulsion : edited book of proceedings of the 10-IWCP, the 10th International Workshop on Combustion and Propulsion held in Lerici, La Spezia, Italy, 21-25 September 2003 / [ed.: Luigi T. DeLuca]}, publisher = {SP Lab, Politecnico di Milano}, address = {Milano}, pages = {getr. Z{\"a}hlung . Ill.}, year = {2005}, language = {en} } @article{DachwaldSeboldt2008, author = {Dachwald, Bernd and Seboldt, W.}, title = {Solar Sails — Propellantless Propulsion for Near- and Medium-Term Deep-Space Missions / W. Seboldt ; B. Dachwald}, series = {Advanced Propulsion Systems and Technologies, Today to 2020 / Claudio Bruno (ed.) ... - (Progress in Astronautics and Aeronautics Series ; 223)}, journal = {Advanced Propulsion Systems and Technologies, Today to 2020 / Claudio Bruno (ed.) ... - (Progress in Astronautics and Aeronautics Series ; 223)}, publisher = {AIAA}, address = {Reston, Va.}, isbn = {978-1-56347-929-8}, pages = {460 S.}, year = {2008}, language = {en} } @article{PeloniCeriottiDachwald2016, author = {Peloni, Alessandro and Ceriotti, Matteo and Dachwald, Bernd}, title = {Solar-sail trajectory design for a multiple near-earth-asteroid rendezvous mission}, series = {Journal of Guidance, Control, and Dynamics}, volume = {39}, journal = {Journal of Guidance, Control, and Dynamics}, number = {12}, publisher = {AIAA}, address = {Reston, Va.}, issn = {0731-5090}, doi = {10.2514/1.G000470}, pages = {2712 -- 2724}, year = {2016}, abstract = {The scientific interest for near-Earth asteroids as well as the interest in potentially hazardous asteroids from the perspective of planetary defense led the space community to focus on near-Earth asteroid mission studies. A multiple near-Earth asteroid rendezvous mission with close-up observations of several objects can help to improve the characterization of these asteroids. This work explores the design of a solar-sail spacecraft for such a mission, focusing on the search of possible sequences of encounters and the trajectory optimization. This is done in two sequential steps: a sequence search by means of a simplified trajectory model and a set of heuristic rules based on astrodynamics, and a subsequent optimization phase. A shape-based approach for solar sailing has been developed and is used for the first phase. The effectiveness of the proposed approach is demonstrated through a fully optimized multiple near-Earth asteroid rendezvous mission. The results show that it is possible to visit five near-Earth asteroids within 10 years with near-term solar-sail technology.}, language = {en} } @article{WittmannBewersdorffGoerleretal.1993, author = {Wittmann, Klaus and Bewersdorff, A. and G{\"o}rler, G.P. and Otto, G.}, title = {Solidification of silver-germanium alloys in an amorphous matrix aboard the space station Mir}, series = {Acta Astronautica. 29 (1993), H. 7}, journal = {Acta Astronautica. 29 (1993), H. 7}, isbn = {0094-5765}, pages = {547 -- 552}, year = {1993}, language = {en} } @article{GrundmannDachwaldGrimmetal.2015, author = {Grundmann, Jan Thimo and Dachwald, Bernd and Grimm, Christian D. and Kahle, Ralph and Koch, Aaron Dexter and Krause, Christian and Lange, Caroline and Quantius, Dominik and Ulamec, Stephan}, title = {Spacecraft for Hypervelocity Impact Research - An Overview of Capabilities, Constraints and the Challenges of Getting There}, series = {Procedia Engineering}, volume = {Vol. 103}, journal = {Procedia Engineering}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1877-7058}, doi = {10.1016/j.proeng.2015.04.021}, pages = {151 -- 158}, year = {2015}, language = {en} } @article{GazdaMaurischat2020, author = {Gazda, Quentin and Maurischat, Andreas}, title = {Special functions and Gauss-Thakur sums in higher rank and dimension}, publisher = {De Gruyter}, address = {Berlin}, pages = {26 Seiten}, year = {2020}, language = {en} } @article{Blome1999, author = {Blome, Hans-Joachim}, title = {Sternstunden der Astronomie Extraterrestrische Grundlagenforschung}, series = {Kultur und Technik. 23 (1999), H. 1}, journal = {Kultur und Technik. 23 (1999), H. 1}, isbn = {0344-5690}, pages = {18 -- 27}, year = {1999}, language = {de} } @article{GerhardtRudolph2000, author = {Gerhardt, Hans Joachim and Rudolph, M.}, title = {Steuerungsstrategien f{\"u}r Fensterbet{\"a}tigungen von Hochh{\"a}usern. Nat{\"u}rliche L{\"u}ftung}, series = {HLH - Heizung, L{\"u}ftung, Klima, Haustechnik. 51 (2000), H. 9}, journal = {HLH - Heizung, L{\"u}ftung, Klima, Haustechnik. 51 (2000), H. 9}, isbn = {1436-5103}, pages = {48 -- 52}, year = {2000}, language = {de} } @article{MatheisRoethWagner2005, author = {Matheis, Anton and R{\"o}th, Thilo and Wagner, Manfred}, title = {Studentenprojekt "Capro" - eine virtuelle Sportwagenstudie "Vision 2015"}, year = {2005}, abstract = {Design- und Karosseriebaustudenten der FH Aachen entwickeln gemeinsam mit externen Fachleuten unter Einsatz virtueller Entwicklungswerkzeuge ein Konzept f{\"u}r einen Sportwagen}, subject = {Karosseriebau}, language = {de} } @article{HennPolaczek2007, author = {Henn, Gudrun and Polaczek, Christa}, title = {Studienerfolg in den Ingenieurwissenschaften}, series = {Das Hochschulwesen : HSW ; Forum f{\"u}r Hochschulforschung, -praxis und -politik}, volume = {55}, journal = {Das Hochschulwesen : HSW ; Forum f{\"u}r Hochschulforschung, -praxis und -politik}, number = {5}, issn = {0018-2974}, pages = {144 -- 147}, year = {2007}, language = {de} } @article{EschSalberWoltersetal.2002, author = {Esch, Thomas and Salber, Wolfgang and Wolters, Peter and Geiger, Jos{\´e} and Dilthey, Jochen}, title = {Synergies of variable valve actuation and direct injection}, series = {Direct injection SI engine technology 2002 : [SAE 2002 world congress, Detroit, Michigan, USA, March 4 - 7, 2002].}, journal = {Direct injection SI engine technology 2002 : [SAE 2002 world congress, Detroit, Michigan, USA, March 4 - 7, 2002].}, publisher = {Society of Automotive Engineers}, address = {Warrendale, Pa}, isbn = {0-7680-0961-8}, pages = {45 -- 53}, year = {2002}, language = {en} } @article{Havermann2006, author = {Havermann, Marc}, title = {Systematic Shock Tube Experiments on Vortex Ring Generation and Propagation / Havermann, M. ; Kainuma, M. ; Takayama, K.}, series = {Shock waves : proceedings of the 25th International Symposium on Shock Waves-ISSW25, July 17 - 22, 2005, Bangalore, India / ed.: G. Jagadeesh}, journal = {Shock waves : proceedings of the 25th International Symposium on Shock Waves-ISSW25, July 17 - 22, 2005, Bangalore, India / ed.: G. Jagadeesh}, publisher = {Universities Pr.}, address = {Hyderabad}, isbn = {978-81-7371571-6}, pages = {1141 S.}, year = {2006}, language = {en} } @article{MaurischatPerkins2020, author = {Maurischat, Andreas and Perkins, Rudolph}, title = {Taylor coefficients of Anderson generating functions and Drinfeld torsion extensions}, number = {Vol. 18, No. 01}, publisher = {World Scientific}, address = {Singapur}, doi = {10.1142/S1793042122500099}, pages = {113 -- 130}, year = {2020}, abstract = {We generalize our work on Carlitz prime power torsion extension to torsion extensions of Drinfeld modules of arbitrary rank. As in the Carlitz case, we give a description of these extensions in terms of evaluations of Anderson generating functions and their hyperderivatives at roots of unity. We also give a direct proof that the image of the Galois representation attached to the p-adic Tate module lies in the p-adic points of the motivic Galois group. This is a generalization of the corresponding result of Chang and Papanikolas for the t-adic case.}, language = {en} } @article{WittmannUlamecFeuerbacheretal.1995, author = {Wittmann, Klaus and Ulamec, S. and Feuerbacher, B. and Rosenbauer, H.}, title = {Technical Challenge, Scientific Thrill: A Long Term Lander on an Active Comet}, series = {Lunar and Planetary Science. 26 (1995)}, journal = {Lunar and Planetary Science. 26 (1995)}, isbn = {0270-9511}, pages = {1431 -- 1432}, year = {1995}, language = {en} } @article{BreitschuhGraberHagemannetal.2003, author = {Breitschuh, S. and Graber, S. and Hagemann, Hans-J{\"u}rgen and Hemdt, A. vom and Schmitz, G{\"u}nter}, title = {Telematiklabore mit LabVIEW in der Ingenieurausbildung}, series = {Virtuelle Instrumente in der Praxis : Messtechnik, Automatisierung ; Begleitband zum Kongress VIP 2003 / Rahman Jamal ; Hans Jaschinski (Hrsg.).}, journal = {Virtuelle Instrumente in der Praxis : Messtechnik, Automatisierung ; Begleitband zum Kongress VIP 2003 / Rahman Jamal ; Hans Jaschinski (Hrsg.).}, publisher = {H{\"u}thig}, address = {Heidelberg [u.a.]}, isbn = {3-7785-2908-0}, pages = {458 -- 464}, year = {2003}, language = {de} } @article{WittmannFortezza1992, author = {Wittmann, Klaus and Fortezza, R.}, title = {Telescience opportunities in the precursor flights}, series = {Space Technology - Industrial and Commercial Applications. 13 (1992), H. 2}, journal = {Space Technology - Industrial and Commercial Applications. 13 (1992), H. 2}, isbn = {0892-9270}, pages = {221 -- 226}, year = {1992}, language = {en} } @article{SeefeldtDachwald2021, author = {Seefeldt, Patric and Dachwald, Bernd}, title = {Temperature increase on folded solar sail membranes}, series = {Advances in Space Research}, volume = {67}, journal = {Advances in Space Research}, number = {9}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0273-1177}, doi = {10.1016/j.asr.2020.09.026}, pages = {2688 -- 2695}, year = {2021}, language = {en} } @article{BohnFunkeGier1999, author = {Bohn, D. and Funke, Harald and Gier, J.}, title = {Temperature jet development in a cross-over channel}, series = {Third European Conference on Turbomachinery - fluid dynamics and thermodynamics : : 2 - 5 March 1999, Royal National Hotel, London, UK / organized by the Energy Transfer and Thermofluid Mechanics Group of the Institution of Mechanical Engineers (IMechE); with support and sponsorship from European Commission / Vol. B.}, journal = {Third European Conference on Turbomachinery - fluid dynamics and thermodynamics : : 2 - 5 March 1999, Royal National Hotel, London, UK / organized by the Energy Transfer and Thermofluid Mechanics Group of the Institution of Mechanical Engineers (IMechE); with support and sponsorship from European Commission / Vol. B.}, publisher = {Professional Engineering Publ.}, address = {Bury St. Edmunds}, pages = {671 -- 680}, year = {1999}, language = {en} } @article{BecretGrossenTrillaetal.2007, author = {B{\´e}cret, P. and Grossen, J. and Trilla, J. and Robinson, A. and Bosschaerts, W. and Funke, Harald and Hendrick, P.}, title = {Testing and numerical study of a 10 kW hydrogen micro combustor}, series = {International Workshop on Micro and Nanotechnology for Power Generation and Energy Conversion Applications <7, 2007, Freiburg, Breisgau> ; PowerMEMS ; 7}, journal = {International Workshop on Micro and Nanotechnology for Power Generation and Energy Conversion Applications <7, 2007, Freiburg, Breisgau> ; PowerMEMS ; 7}, pages = {367 -- 370}, year = {2007}, language = {en} } @article{RobinsonRoennaFunke2007, author = {Robinson, A. E. and R{\"o}nna, Uwe and Funke, Harald}, title = {Testing of a 10 kW diffusive micro-mix combustor for hydrogen-fuelled micro-scale gas turbines}, series = {International Workshop on Micro and Nanotechnology for Power Generation and Energy Conversion Applications <7, 2007, Freiburg, Breisgau> ; PowerMEMS ; 7}, journal = {International Workshop on Micro and Nanotechnology for Power Generation and Energy Conversion Applications <7, 2007, Freiburg, Breisgau> ; PowerMEMS ; 7}, pages = {225 -- 228}, year = {2007}, language = {en} } @article{Gerhardt2005, author = {Gerhardt, Hans Joachim}, title = {Teures Bauen durch starre Genehmigungspraxis}, series = {Der Bausachverst{\"a}ndige : Zeitschrift f{\"u}r Bausch{\"a}den, Grundst{\"u}ckswert und gutachterliche T{\"a}tigkeit. 1 (2005), H. 5}, journal = {Der Bausachverst{\"a}ndige : Zeitschrift f{\"u}r Bausch{\"a}den, Grundst{\"u}ckswert und gutachterliche T{\"a}tigkeit. 1 (2005), H. 5}, isbn = {1614-6123}, pages = {44 -- 45}, year = {2005}, language = {de} } @article{CzupallaHorneckBlome2005, author = {Czupalla, Markus and Horneck, G. and Blome, Hans-Joachim}, title = {The conceptual design of a hybrid life support system based on the evaluation and comparison of terrestrial testbeds}, series = {Advances in Space Research}, volume = {35}, journal = {Advances in Space Research}, number = {9}, isbn = {0273-1177}, pages = {1609 -- 1620}, year = {2005}, language = {en} } @article{BlomeWilson2004, author = {Blome, Hans-Joachim and Wilson, Thomas L.}, title = {The entangled Universe}, series = {Relativistic Astrophysics and Cosmology, Proceedings of the 13th Course of the International School of Cosmic Ray Astrophysics, held in Erice, Italy, 2-14 June 2002 / edited by Maurice M. Shapiro ... [et al.]}, journal = {Relativistic Astrophysics and Cosmology, Proceedings of the 13th Course of the International School of Cosmic Ray Astrophysics, held in Erice, Italy, 2-14 June 2002 / edited by Maurice M. Shapiro ... [et al.]}, publisher = {World Scientific Publishing}, address = {New Jersey, NJ}, isbn = {981-238-727-7}, pages = {23 -- 38}, year = {2004}, language = {en} } @article{LyonsMikuckiGermanetal.2019, author = {Lyons, W. Berry and Mikucki, Jill A. and German, Laura A. and Welch, Kathleen A. and Welch, Susan A. and Gardener, Christopher B. and Tulaczyk, Slawek M. and Pettit, Erin C. and Kowalski, Julia and Dachwald, Bernd}, title = {The Geochemistry of Englacial Brine from Taylor Glacier, Antarctica}, series = {Journal of Geophysical Research: Biogeosciences}, journal = {Journal of Geophysical Research: Biogeosciences}, publisher = {Wiley}, address = {Hoboken}, issn = {2169-8961}, doi = {10.1029/2018JG004411}, year = {2019}, language = {en} } @article{Wittmann1993, author = {Wittmann, Klaus}, title = {The microgravity User Support Centre}, series = {Space Technology - Industrial and Commercial Applications. 13 (1993), H. 2}, journal = {Space Technology - Industrial and Commercial Applications. 13 (1993), H. 2}, isbn = {0892-9270}, pages = {121 -- 124}, year = {1993}, language = {en} } @article{WittmannSchmidtPadekenetal.1988, author = {Wittmann, Klaus and Schmidt, H. P. and Padeken, D. and Hildmann, B.}, title = {The Microgravity User Support Centre (MUSC)}, series = {ESA SP. 277 (1988)}, journal = {ESA SP. 277 (1988)}, isbn = {0379-6566}, pages = {525}, year = {1988}, language = {en} } @article{WilsonBlome2009, author = {Wilson, T. L. and Blome, Hans-Joachim}, title = {The Pioneer anomaly and a rotating G{\"o}del universe}, series = {Advances in Space Research}, volume = {44}, journal = {Advances in Space Research}, number = {11}, isbn = {0273-1177}, pages = {1345 -- 1353}, year = {2009}, language = {en} } @article{BlomeKosbow2005, author = {Blome, Hans-Joachim and Kosbow, Michael}, title = {The Pioneer Anomaly in the context of non-Newtonian Gravity}, series = {International Astronautical Congress : final papers : October 17-21, 2005, Fukuoka, Japan}, journal = {International Astronautical Congress : final papers : October 17-21, 2005, Fukuoka, Japan}, publisher = {International Astronautical Federation}, address = {Paris}, pages = {20 -- 20}, year = {2005}, language = {en} } @article{BlomePriester1987, author = {Blome, Hans-Joachim and Priester, Wolfgang}, title = {The problem of the primeval explosion: 'Big bang' or 'big bounce'? I}, series = {Sterne und Weltraum. 26 (1987)}, journal = {Sterne und Weltraum. 26 (1987)}, isbn = {0039-1263}, pages = {83 -- 89}, year = {1987}, language = {en} } @article{BlomeWilson2005, author = {Blome, Hans-Joachim and Wilson, Thomas L.}, title = {The quantum temperature of accelerating cosmological models of an entangled Universe}, series = {Advances in Space Research. 35 (2005), H. 1}, journal = {Advances in Space Research. 35 (2005), H. 1}, isbn = {0273-1177}, pages = {111 -- 115}, year = {2005}, language = {en} } @article{WittmannBibringRosenbaueretal.2007, author = {Wittmann, Klaus and Bibring, J.-P. and Rosenbauer, H. and Boehnhardt, H.}, title = {The Rosetta Lander ("Philae") Investigations / Bibring, J.-P. ; Rosenbauer, H. ; Boehnhardt, H. ; [...] Wittmann, K.}, series = {Space Science Reviews. 128 (2007), H. 1-4}, journal = {Space Science Reviews. 128 (2007), H. 1-4}, isbn = {0038-6308}, pages = {205 -- 220}, year = {2007}, language = {en} } @article{Blome1994, author = {Blome, Hans-Joachim}, title = {The scale of the universe: a unit of length}, series = {Comments on astrophysics. 17 (1994)}, journal = {Comments on astrophysics. 17 (1994)}, isbn = {0146-2970}, pages = {327 -- 335}, year = {1994}, language = {en} } @article{WittmannPadeken1993, author = {Wittmann, Klaus and Padeken, D.}, title = {The User Center for Microgravity MUSC - Support for space experiments}, series = {DLR-Nachrichten. 70 (1993)}, journal = {DLR-Nachrichten. 70 (1993)}, isbn = {0937-0420}, pages = {19 -- 24}, year = {1993}, language = {en} } @article{WildSchrezenmeierCzupallaetal.2020, author = {Wild, Dominik and Schrezenmeier, Johannes and Czupalla, Markus and F{\"o}rstner, Markus}, title = {Thermal Characterization of additive manufactured Integral Structures for Phase Change Applications}, series = {2020 International Conference on Environmental Systems}, journal = {2020 International Conference on Environmental Systems}, publisher = {Texas Tech University}, year = {2020}, abstract = {"Infused Thermal Solutions" (ITS) introduces a method for passive thermal control to stabilize structural components thermally without active heating and cooling systems, by using phase change material (PCM) in combination with lattice - both embedded into an additive manufactured integral structure. The technology is currently under development. This paper presents the results of the thermal property measurements performed on additive manufactured ITS breadboards. Within the breadboard campaigns key characteristics of the additive manufactured specimens were derived: Mechanical parameters: specimen impermeability, minimum wall thickness, lattice structure, subsequent heat treatment. Thermal properties: thermo-optical surface properties of the additive manufactured raw material, thermal conductivity and specific heat capacity measurements. As a conclusion the paper introduces an overview of potential ITS hardware applications, expected to increase the thermal performance.}, language = {en} } @article{WeberArentSteffenetal.2017, author = {Weber, Tobias and Arent, Jan-Christoph and Steffen, Lucas and Balvers, Johannes M. and Duhovic, Miro}, title = {Thermal optimization of composite autoclave molds using the shift factor approach for boundary condition estimation}, series = {Journal of Composite Materials}, volume = {51}, journal = {Journal of Composite Materials}, number = {12}, publisher = {Sage}, address = {London}, issn = {1530-793X}, doi = {10.1177/0021998317699868}, pages = {1753 -- 1767}, year = {2017}, language = {en} } @article{FischerKowalskiPudasaini2012, author = {Fischer, Jan-Thomas and Kowalski, Julia and Pudasaini, Shiva P.}, title = {Topographic curvature effects in applied avalanche modelling}, series = {Cold Regions Science and Technology}, volume = {74-75}, journal = {Cold Regions Science and Technology}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1872-7441}, doi = {10.1016/j.coldregions.2012.01.005}, pages = {21 -- 30}, year = {2012}, abstract = {This paper describes the implementation of topographic curvature effects within the RApid Mass MovementS (RAMMS) snow avalanche simulation toolbox. RAMMS is based on a model similar to shallow water equations with a Coulomb friction relation and the velocity dependent Voellmy drag. It is used for snow avalanche risk assessment in Switzerland. The snow avalanche simulation relies on back calculation of observed avalanches. The calibration of the friction parameters depends on characteristics of the avalanche track. The topographic curvature terms are not yet included in the above mentioned classical model. Here, we fundamentally improve this model by mathematically and physically including the topographic curvature effects. By decomposing the velocity dependent friction into a topography dependent term that accounts for a curvature enhancement in the Coulomb friction, and a topography independent contribution similar to the classical Voellmy drag, we construct a general curvature dependent frictional resistance, and thus propose new extended model equations. With three site-specific examples, we compare the apparent frictional resistance of the new approach, which includes topographic curvature effects, to the classical one. Our simulation results demonstrate substantial effects of the curvature on the flow dynamics e.g., the dynamic pressure distribution along the slope. The comparison of resistance coefficients between the two models demonstrates that the physically based extension presents an improvement to the classical approach. Furthermore a practical example highlights its influence on the pressure outline in the run out zone of the avalanche. Snow avalanche dynamics modeling natural terrain curvature centrifugal force friction coefficients.}, language = {en} } @article{Esch2010, author = {Esch, Thomas}, title = {Trends in commercial vehicle powertrains}, series = {ATZautotechnology}, volume = {2010}, journal = {ATZautotechnology}, number = {10}, publisher = {Vieweg \& Sohn}, address = {Wiesbaden}, issn = {2192-886X}, doi = {10.1007/BF03247185}, pages = {26 -- 31}, year = {2010}, abstract = {Low emission zones and truck bans, the rising price of diesel and increases in road tolls: all of these factors are putting serious pressure on the transport industry. Commercial vehicle manufacturers and their suppliers are in the process of identifying new solutions to these challenges as part of their efforts to meet the EEV (enhanced environmentally friendly vehicle) limits, which are currently the most robust European exhaust and emissions standards for trucks and buses.}, language = {en} } @article{Esch2010, author = {Esch, Thomas}, title = {Trends in der Nutzfahrzeugantriebstechnik}, series = {Motortechnische Zeitschrift (MTZ)}, volume = {71}, journal = {Motortechnische Zeitschrift (MTZ)}, number = {10}, publisher = {Springer Nature}, address = {Basel}, isbn = {0024-8525}, doi = {10.1007/bf03225608}, pages = {652 -- 658}, year = {2010}, language = {de} } @article{WittmannGillessenOttoetal.1996, author = {Wittmann, Klaus and Gillessen, F. and Otto, G. and R{\"o}stel, R.}, title = {Undercooling and solidification of metallic melts suspended in a non-nucleating matrix: Experiment NUCAL of the German Spacelab Mission D-2}, series = {Acta Astronautica. 38 (1996), H. 1}, journal = {Acta Astronautica. 38 (1996), H. 1}, isbn = {0094-5765}, pages = {63 -- 68}, year = {1996}, language = {en} } @article{RoethPielenWolffetal.2018, author = {R{\"o}th, Thilo and Pielen, Michael and Wolff, Klaus and L{\"u}diger, Thomas}, title = {Urbane Fahrzeugkonzepte f{\"u}r die Shared Mobility}, series = {Automobiltechnische Zeitschrift - ATZ}, volume = {120}, journal = {Automobiltechnische Zeitschrift - ATZ}, number = {1}, publisher = {Springer Vieweg}, address = {Wiesbaden}, issn = {0001-2785}, doi = {10.1007/s35148-017-0176-8}, pages = {18 -- 23}, year = {2018}, abstract = {Urbane Mobilit{\"a}tskonzepte der Zukunft erfordern neue Unternehmensformen, idealerweise aus Old Economy und New Economy, sowie eine enge Anbindung an die gesellschaftsrelevante Zukunftsforschung. F{\"u}r neue Fahrzeugkonzepte des Carsharing bedeutet dies, dass alle kostenverursachenden Faktoren erfasst und analysiert werden m{\"u}ssen. Die FH Aachen, share2drive und FEV geben einen Ausblick auf die zuk{\"u}nftige Fahrzeugklasse der Personal Public Vehicles als „Rolling Device".}, language = {de} } @article{BlomePriester1984, author = {Blome, Hans-Joachim and Priester, Wolfgang}, title = {Urknall und Evolution des Kosmos. I. Einstein-Friedmann-Kosmos und das Neutrino-Problem}, series = {Naturwissenschaften. 71 (1984), H. 9}, journal = {Naturwissenschaften. 71 (1984), H. 9}, isbn = {0028-1042}, pages = {456 -- 467}, year = {1984}, language = {de} } @article{BlomePriester1984, author = {Blome, Hans-Joachim and Priester, Wolfgang}, title = {Urknall und Evolution des Kosmos. II. Inflation{\"a}r modifizierter Urknall und Eschatologie des Kosmos}, series = {Naturwissenschaften. 71 (1984), H. 10}, journal = {Naturwissenschaften. 71 (1984), H. 10}, isbn = {0028-1042}, pages = {515 -- 527}, year = {1984}, language = {de} } @article{BlomePriester1985, author = {Blome, Hans-Joachim and Priester, Wolfgang}, title = {Vacuum energy in cosmic dynamics}, series = {Astrophysics and Space Science. 117 (1985), H. 2}, journal = {Astrophysics and Space Science. 117 (1985), H. 2}, isbn = {0004-640X}, pages = {327 -- 335}, year = {1985}, language = {en} } @article{GermanMikuckiWelchetal.2021, author = {German, Laura and Mikucki, Jill A. and Welch, Susan A. and Welch, Kathleen A. and Lutton, Anthony and Dachwald, Bernd and Kowalski, Julia and Heinen, Dirk and Feldmann, Marco and Francke, Gero and Espe, Clemens and Lyons, W. Berry}, title = {Validation of sampling antarctic subglacial hypersaline waters with an electrothermal ice melting probe (IceMole) for environmental analytical geochemistry}, series = {International Journal of Environmental Analytical Chemistry}, volume = {101}, journal = {International Journal of Environmental Analytical Chemistry}, number = {15}, publisher = {Taylor \& Francis}, address = {London}, issn = {0306-7319}, doi = {10.1080/03067319.2019.1704750}, pages = {2654 -- 2667}, year = {2021}, abstract = {Geochemical characterisation of hypersaline waters is difficult as high concentrations of salts hinder the analysis of constituents at low concentrations, such as trace metals, and the collection of samples for trace metal analysis in natural waters can be easily contaminated. This is particularly the case if samples are collected by non-conventional techniques such as those required for aquatic subglacial environments. In this paper we present the first analysis of a subglacial brine from Taylor Valley, (~ 78°S), Antarctica for the trace metals: Ba, Co, Mo, Rb, Sr, V, and U. Samples were collected englacially using an electrothermal melting probe called the IceMole. This probe uses differential heating of a copper head as well as the probe's sidewalls and an ice screw at the melting head to move through glacier ice. Detailed blanks, meltwater, and subglacial brine samples were collected to evaluate the impact of the IceMole and the borehole pump, the melting and collection process, filtration, and storage on the geochemistry of the samples collected by this device. Comparisons between melt water profiles through the glacier ice and blank analysis, with published studies on ice geochemistry, suggest the potential for minor contributions of some species Rb, As, Co, Mn, Ni, NH4+, and NO2-+NO3- from the IceMole. The ability to conduct detailed chemical analyses of subglacial fluids collected with melting probes is critical for the future exploration of the hundreds of deep subglacial lakes in Antarctica.}, language = {en} } @article{EschGoebelPischinger1995, author = {Esch, Thomas and G{\"o}bel, T. and Pischinger, M.}, title = {Variable Ventilsteuerung - Luft- und Kraftstoffzumessung bei Ottomotoren mit variabler Ventilsteuerung}, series = {Forschungsberichte Verbrennungskraftmaschinen. 578 (1995)}, journal = {Forschungsberichte Verbrennungskraftmaschinen. 578 (1995)}, pages = {1 -- 42}, year = {1995}, language = {de} }