@inproceedings{FunkeHajAyedKustereretal.2014, author = {Funke, Harald and Haj Ayed, A. and Kusterer, K. and Keinz, Jan and Kazari, M. and Kitajima, J. and Horikawa, A. and Okada, K.}, title = {Numerical Study on Increased Energy Density for the DLN Micromix Hydrogen Combustion Principle}, series = {Combustion, Fuels and Emissions (ASME Turbo Expo 2014: Turbine Technical Conference and Exposition : D{\"u}sseldorf, Germany, June 16-20, 2014 ; Vol. 4A)}, booktitle = {Combustion, Fuels and Emissions (ASME Turbo Expo 2014: Turbine Technical Conference and Exposition : D{\"u}sseldorf, Germany, June 16-20, 2014 ; Vol. 4A)}, publisher = {ASME}, address = {New York, N.Y.}, isbn = {978-0-7918-4568-4}, pages = {V04AT04A057}, year = {2014}, language = {en} } @article{DachwaldMikuckiTulaczyketal.2014, author = {Dachwald, Bernd and Mikucki, Jill and Tulaczyk, Slawek and Digel, Ilya and Espe, Clemens and Feldmann, Marco and Francke, Gero and Kowalski, Julia and Xu, Changsheng}, title = {IceMole : A maneuverable probe for clean in situ analysis and sampling of subsurface ice and subglacial aquatic ecosystems}, series = {Annals of Glaciology}, volume = {55}, journal = {Annals of Glaciology}, number = {65}, publisher = {Cambridge University Press}, address = {Cambridge}, issn = {1727-5644}, doi = {10.3189/2014AoG65A004}, pages = {14 -- 22}, year = {2014}, abstract = {There is significant interest in sampling subglacial environments for geobiological studies, but they are difficult to access. Existing ice-drilling technologies make it cumbersome to maintain microbiologically clean access for sample acquisition and environmental stewardship of potentially fragile subglacial aquatic ecosystems. The IceMole is a maneuverable subsurface ice probe for clean in situ analysis and sampling of glacial ice and subglacial materials. The design is based on the novel concept of combining melting and mechanical propulsion. It can change melting direction by differential heating of the melting head and optional side-wall heaters. The first two prototypes were successfully tested between 2010 and 2012 on glaciers in Switzerland and Iceland. They demonstrated downward, horizontal and upward melting, as well as curve driving and dirt layer penetration. A more advanced probe is currently under development as part of the Enceladus Explorer (EnEx) project. It offers systems for obstacle avoidance, target detection, and navigation in ice. For the EnEx-IceMole, we will pay particular attention to clean protocols for the sampling of subglacial materials for biogeochemical analysis. We plan to use this probe for clean access into a unique subglacial aquatic environment at Blood Falls, Antarctica, with return of a subglacial brine sample.}, language = {en} } @inproceedings{SchirraBauschatWatmuff2014, author = {Schirra, Julian and Bauschat, J.-Michael and Watmuff, J.H.}, title = {Accurate induced drag prediction for highly non-planar lifting systems}, series = {19th Australasian Fluid Mechanics Conference : 8.-11. Dezember 2014, Melbourne, Australia}, booktitle = {19th Australasian Fluid Mechanics Conference : 8.-11. Dezember 2014, Melbourne, Australia}, pages = {4 Seiten}, year = {2014}, abstract = {The impact of wake model effects is investigated for two highly non-planar lifting systems. Dependent on the geometrical arrangement of the configuration, the wake model shape is found to considerably affect the estimation. Particularly at higher angles of attack, an accurate estimation based on the common linear wake model approaches is involved.}, language = {en} } @misc{EickmannEschFunkeetal.2014, author = {Eickmann, Matthias and Esch, Thomas and Funke, Harald and Abanteriba, Sylvester and Roosen, Petra}, title = {Biofuels in Aviation - Safety Implications of Bio-Ethanol Usage in General Aviation Aircraft}, year = {2014}, abstract = {Up in the clouds and above fuels and construction materials must be very carefully selected to ensure a smooth flight and touchdown. Out of around 38,000 single and dual-engined propeller aeroplanes, roughly a third are affected by a new trend in the fuel sector that may lead to operating troubles or even emergency landings: The admixture of bio-ethanol to conventional gasoline. Experiences with these fuels may be projected to alternative mixtures containing new components.}, language = {en} } @inproceedings{FunkeBoernerHendricketal.2013, author = {Funke, Harald and B{\"o}rner, Sebastian and Hendrick, P. and Recker, E. and Elsing, R.}, title = {Development and integration of a scalable low NOx combustion chamber for a hydrogen fuelled aero gas turbine}, series = {Progress in Propulsion Physics. - Vol. 4}, booktitle = {Progress in Propulsion Physics. - Vol. 4}, editor = {DeLuca, Luigi T.}, publisher = {EDP Sciences}, address = {[Les Ulis]}, isbn = {978-2-7598-0876-2}, doi = {10.1051/eucass/201304357}, pages = {357 -- 372}, year = {2013}, language = {en} } @incollection{RoethKampkerReisgenetal.2013, author = {R{\"o}th, Thilo and Kampker, Achim and Reisgen, Uwe and Hameyer, Kay and De Doncker, R. W.}, title = {Entwicklung von elektrofahrzeugspezifischen Systemen}, series = {Elektromobilit{\"a}t : Grundlagen einer Zukunftstechnologie}, booktitle = {Elektromobilit{\"a}t : Grundlagen einer Zukunftstechnologie}, publisher = {Springer}, address = {Berlin}, isbn = {978-3-642-31986-0}, pages = {235 -- 336}, year = {2013}, abstract = {Die Fahrzeugkarosserie bildet als gr{\"o}ßte funktionale und organisatorische Systemeinheit ein zentrales Kompetenzfeld der OEMs. F{\"u}r den Fahrzeughersteller stellt der Karosserierohbau eine hohe Kernkompetenz sowohl in der Produktentwicklung als auch in der Produktion dar. Neue, innovative Karosseriebauweisen, bspw. aufgrund eines neuen Fahrzeugkonzeptes oder neuer Anforderungen, bedeuten f{\"u}r den OEM auch gleichzeitig die intensive Auseinandersetzung mit Kompetenzfokussierung bzw. Wertsch{\"o}pfungsverlagerungen.}, language = {de} } @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} } @incollection{Janser2013, author = {Janser, Frank}, title = {Zukunftssicherung im Mittelstand - Kooperation zwischen der Stacke Tresorbau GmbH und der Fachhochschule Aachen}, series = {Innovation durch Kooperation : wie der Mittelstand durch Zusammenarbeit mit den Hochschulen seine Wettbewerbsf{\"a}higkeit steigert : Festschrift f{\"u}r Prof. Dr. rer. nat. Johannes Gartzen / Thomas Gartzen, Ute Gartzen (Hrsg.)}, booktitle = {Innovation durch Kooperation : wie der Mittelstand durch Zusammenarbeit mit den Hochschulen seine Wettbewerbsf{\"a}higkeit steigert : Festschrift f{\"u}r Prof. Dr. rer. nat. Johannes Gartzen / Thomas Gartzen, Ute Gartzen (Hrsg.)}, publisher = {Apprimus Verlag}, address = {Aachen}, isbn = {978-3-86359-136-6}, pages = {179 -- 183}, year = {2013}, language = {de} } @incollection{DachwaldUlamecBiele2013, author = {Dachwald, Bernd and Ulamec, Stephan and Biele, Jens}, title = {Clean in situ subsurface exploration of icy environments in the solar system}, series = {Habitability of other planets and satellites. - (Cellular origin, life in extreme habitats and astrobiology ; 28)}, booktitle = {Habitability of other planets and satellites. - (Cellular origin, life in extreme habitats and astrobiology ; 28)}, publisher = {Springer}, address = {Dordrecht}, isbn = {978-94-007-6545-0 (Druckausgabe)}, pages = {367 -- 397}, year = {2013}, abstract = {"To assess the habitability of the icy environments in the solar system, for example, on Mars, Europa, and Enceladus, the scientific analysis of material embedded in or underneath their ice layers is very important. We consider self-steering robotic ice melting probes to be the best method to cleanly access these environments, that is, in compliance with planetary protection standards. The required technologies are currently developed and tested."}, language = {en} } @book{AppelBraehlerBreueretal.2013, author = {Appel, Wolfgang and Br{\"a}hler, Hermann and Breuer, Stefan and Dahlhaus, Ulrich and Esch, Thomas and Hoepke, Erich and Kopp, Stephan and Rhein, Bernd}, title = {Nutzfahrzeugtechnik : Grundlagen, Systeme, Komponenten. 7., {\"u}berarb. u. erw. Aufl.}, publisher = {Vieweg + Teubner}, address = {Wiesbaden}, isbn = {978-3-8348-2224-6}, pages = {XXXII, 620 S. : Ill., graph. Darst.}, year = {2013}, language = {de} } @book{Schmitz2013, author = {Schmitz, G{\"u}nter}, title = {Elektrotechnik f{\"u}r Ingenieurstudenten nichtelektrotechnischer Fachrichtungen. Hauptbd.: Gleichspannungstechnik, Wechselspannungstechnik, Elektrische Maschinen}, publisher = {Schmitz}, address = {Aachen}, isbn = {978-1-481830-60-7}, pages = {150 S. : Ill., graph. Darst.}, year = {2013}, language = {de} } @book{Schmitz2013, author = {Schmitz, G{\"u}nter}, title = {Elektrotechnik f{\"u}r Ingenieurstudenten nichtelektrotechnischer Fachrichtungen. Aufgabensammlung, [{\"U}bungs- und Klausuraufgaben]}, publisher = {Schmitz}, address = {Aachen}, isbn = {978-1-482721-47-8}, pages = {140 S. : graph. Darst.}, year = {2013}, language = {de} } @inproceedings{SpohrSchirraHoeflingetal.2013, author = {Spohr, A. and Schirra, Julian and Hoefling, J. and Schedl, A.}, title = {Wing weight estimation methodology for highly non-planar lifting systems during conceptual design}, series = {Deutscher Luft- und Raumfahrtkongress 2013 : 10.9. - 12.9.2013, Stuttgart}, booktitle = {Deutscher Luft- und Raumfahrtkongress 2013 : 10.9. - 12.9.2013, Stuttgart}, organization = {Deutscher Luft- und Raumfahrtkongress <62, 2013, Stuttgart>}, pages = {Publ. online}, year = {2013}, language = {en} } @inproceedings{HoeflingSchirraSpohretal.2013, author = {Hoefling, J. and Schirra, Julian and Spohr, A. and Sch{\"a}fer, D.}, title = {Induced drag computation with wake model schemes for highly non-planar wing systems}, series = {Deutscher Luft- und Raumfahrtkongress 2013 : 10.9. - 12.9.2013, Stuttgart}, booktitle = {Deutscher Luft- und Raumfahrtkongress 2013 : 10.9. - 12.9.2013, Stuttgart}, publisher = {Dt. Ges. f{\"u}r Luft- und Raumfahrt}, address = {Bonn}, organization = {Deutscher Luft- und Raumfahrtkongress <62, 2013, Stuttgart>}, pages = {1 -- 10}, year = {2013}, language = {en} } @article{KraemerDaabMuelleretal.2013, author = {Kr{\"a}mer, Stefan and Daab, Dominique Jonas and M{\"u}ller, Brigitte and Wagner, Tobias and Baader, Fabian and Hessel, Joana and Gdalewitsch, Georg and Plescher, Engelbert and Dachwald, Bernd and Wahle, Michael and Gierse, Andreas and Vetter, Rudolf and Pf{\"u}tzenreuter, Lysan}, title = {Development and flight-testing of a system to isolate vibrations for microgravity experiments on sounding rockets}, series = {21st ESA Symposium on Rocket and Balloon Research}, journal = {21st ESA Symposium on Rocket and Balloon Research}, pages = {1 -- 8}, year = {2013}, language = {en} } @inproceedings{FunkeKeinzBoerneretal.2013, author = {Funke, Harald and Keinz, Jan and B{\"o}rner, Sebastian and Haj Ayed, A. and Kusterer, K. and Tekin, N. and Kazari, M. and Kitajima, J. and Horikawa, A. and Okada, K.}, title = {Experimental and numerical characterization of the dry low NOx micromix hydrogen combustion principle at increased energy density for industrial hydrogen gas turbine applications}, series = {Combustion, fuels and emissions : proceedings of the ASME Turbo Expo: Turbine Technical Conference and Exposition - 2013 ; June 3 - 7, 2013, San Antonio, Texas, USA ; vol. 1}, booktitle = {Combustion, fuels and emissions : proceedings of the ASME Turbo Expo: Turbine Technical Conference and Exposition - 2013 ; June 3 - 7, 2013, San Antonio, Texas, USA ; vol. 1}, editor = {Song, Seung Jin}, publisher = {ASME}, address = {New York, NY}, organization = {American Society of Mechanical Engineers}, isbn = {978-0-7918-5510-2}, pages = {V001T04A055}, year = {2013}, language = {en} } @inproceedings{SchirraJ2013, author = {Schirra, Julian and J., Watmuff}, title = {Euler-based induced drag estimation for highly non-planar lifting systems during conceptional design}, series = {62. Deutscher Luft- und Raumfahrtkongress 2013 : 10. - 12. September 2032, Stuttgart, Haus der Wirtschaft}, booktitle = {62. Deutscher Luft- und Raumfahrtkongress 2013 : 10. - 12. September 2032, Stuttgart, Haus der Wirtschaft}, publisher = {Dt. Gesellschaft f{\"u}r Luft- und Raumfahrt}, address = {Bonn}, organization = {Deutsche Gesellschaft f{\"u}r Luft- und Raumfahrt - Lilienthal-Oberth}, pages = {1 -- 8}, year = {2013}, language = {en} } @phdthesis{Boerner2013, author = {B{\"o}rner, Sebastian}, title = {Optimization and testing of a low NOx hydrogen fuelled gas turbine}, publisher = {Universit{\´e} Libre de Bruxelles}, address = {Bruxelles}, pages = {XVI, 144 S.}, year = {2013}, language = {en} } @article{BindalSharmaJanseretal.2013, author = {Bindal, Gaurav and Sharma, Sparsh and Janser, Frank and Neu, Eugen}, title = {Detailed analysis of variables affecting wing kinematics of bat flight}, series = {SAE International Journal of Aerospace}, volume = {6}, journal = {SAE International Journal of Aerospace}, number = {2}, issn = {1946-3901}, doi = {10.4271/2013-01-9003}, pages = {811 -- 818}, year = {2013}, language = {en} } @book{Esch2013, author = {Esch, Thomas}, title = {Verbrennungsmotoren}, edition = {10. Aufl., [Umdruck]}, publisher = {Fachhochschule Aachen, Lehr- und Forschungsgebiet Thermodynamik und Verbrennungstechnik}, address = {Aachen}, pages = {Getr. Z{\"a}hlung : Ill. und graph. Darst.}, year = {2013}, language = {de} } @book{Esch2013, author = {Esch, Thomas}, title = {Experimentelle Untersuchungen an Antriebssystemen von Kraft-, Luft- und Raumfahrzeugen : Vorlesungsumdruck. 2. Aufl. Bd. 1}, edition = {2. Aufl.}, publisher = {Fachhochschule Aachen, Lehr- und Forschungsgebiet Thermodynamik und Verbrennungstechnik}, address = {Aachen}, pages = {Getr. Z{\"a}hlung : Ill. und graph. Darst.}, year = {2013}, language = {de} } @inproceedings{KonstantinidisDachwaldOhndorfetal.2013, author = {Konstantinidis, K. and Dachwald, Bernd and Ohndorf, A. and Dykta, P. and Voigt, K. and F{\"o}rstner, R.}, title = {Enceladus explorer (ENEX): A lander mission to probe subglacial water pockets on Saturn's moon enceladus for life}, series = {64th International Astronautical Congress 2013 (IAC 2013) : Beijing, China, 23 - 27 September 2013. (Proceedings of the International Astronautical Congress, IAC ; 2)}, booktitle = {64th International Astronautical Congress 2013 (IAC 2013) : Beijing, China, 23 - 27 September 2013. (Proceedings of the International Astronautical Congress, IAC ; 2)}, publisher = {Curran}, address = {Red Hook, NY}, organization = {International Astronautical Congress <64, 2013, Beijing>}, isbn = {978-1-62993-909-4}, pages = {1340 -- 1350}, year = {2013}, language = {en} } @techreport{EschEickmannCoussementetal.2013, author = {Esch, Thomas and Eickmann, Matthias and Coussement, Axel and Kalbhenn, Hartmut}, title = {Wasserstoffspezifische Abstimmung der Ladungswechselvorg{\"a}nge eines Verbrennungsmotors mit Direkteinblasung : Schlussbericht f{\"u}r das Forschungsvorhaben ; Kurztitel: HydI - Hydrogen direct injection ; F{\"o}rderperiode 01.07.2008 - 31.12.2011 / FH Aachen, Thermodynamik und Verbrennungstechnik}, address = {Aachen}, organization = {FH Aachen}, pages = {Online-Ressource (PDF-Datei: 94 S.) : Ill., graph. Darst.}, year = {2013}, language = {de} } @book{BenkoePlescher2013, author = {Benk{\"o}, Marietta and Plescher, Engelbert}, title = {Space law: reconsidering the definition/delimitation question and the passage of spacecraft through foreign airspace. (Essential air and space law ; 12)}, publisher = {Eleven International Publishing}, address = {The Hague}, isbn = {9789462360761 ; 9462360766 ; 9789460948176}, pages = {VII, 159 S.}, year = {2013}, language = {en} } @misc{Bagheri2013, author = {Bagheri, Mohsen}, title = {Mobile Wartungshalle f{\"u}r Kletterroboter f{\"u}r Masten [Europ{\"a}ische Patentanmeldung]}, publisher = {Europ{\"a}isches Patentamt}, address = {Den Hague}, pages = {1 -- 19}, year = {2013}, language = {de} } @article{WeiheAnsgarRoethetal.2013, author = {Weihe, Stefan and Ansgar, Ernst and R{\"o}th, Thilo and Proksch, Johannes}, title = {Leichtmetall-Stahl-Verbundguss im Nutzfahrzeugbau}, series = {Lightweight Design}, volume = {6}, journal = {Lightweight Design}, number = {2}, publisher = {Springer}, address = {Berlin}, issn = {2192-8738 (Online)}, pages = {38 -- 43}, year = {2013}, abstract = {In modernen Fahrzeugkarosserien der Großserie kommen zunehmend Materialmischbauweisen zur Anwendung. In Zusammenarbeit der Daimler AG, der Tower Automotive Holding GmbH, der Imperia GmbH sowie der Partnerunternehmen KSM Castings GmbH und Schaufler Tooling GmbH \& Co. KG wird das Leichtbaupotenzial von Stahlblech-AluminiumverbundgussHybriden am Beispiel des vorderen Dachquertr{\"a}gers des Mercedes-Benz Viano/Vito ausf{\"u}hrlich untersucht.}, language = {de} } @article{WeiheErnstRoethetal.2013, author = {Weihe, Stefan and Ernst, Ansgar and R{\"o}th, Thilo and Proksch, Johannes}, title = {Aluminium-Stahl-Verbundguss im Nutzfahrzeugbau}, series = {ATZ - Automobiltechnische Zeitschrift}, volume = {115}, journal = {ATZ - Automobiltechnische Zeitschrift}, number = {4}, publisher = {Springer Fachmedien Wiesbaden}, issn = {2192-8800 (Online)}, pages = {312 -- 316}, year = {2013}, abstract = {In modernen Fahrzeugkarosserien der Großserie kommen zunehmend Materialmischbauweisen zur Anwendung. In Zusammenarbeit der Daimler AG, der Tower Automotive Holding GmbH, der Imperia GmbH sowie der Partnerunternehmen KSM Castings GmbH und Schaufler Tooling GmbH \& Co. KG wird das Leichtbaupotenzial von Aluminiumverbundguss-Stahlblech-Hybriden am Beispiel des vorderen Dachquertr{\"a}gers des Mercedes-Benz Viano/Vito ausf{\"u}hrlich untersucht.}, language = {de} } @incollection{Blome2013, author = {Blome, Hans-Joachim}, title = {Die Tragweite der physikalischen Kosmologie}, series = {Exploring Uncertainty}, booktitle = {Exploring Uncertainty}, publisher = {Springer Gabler}, address = {Wiesbaden}, isbn = {978-3-658-00897-0}, doi = {10.1007/978-3-658-00897-0_6}, pages = {105 -- 150}, year = {2013}, language = {de} } @inproceedings{GierseKraemerDaabetal.2013, author = {Gierse, Andreas and Kr{\"a}mer, Stefan and Daab, Dominique J. and Hessel, Joana and Baader, Fabian and M{\"u}ller, Brigitte S. and Wagner, Tobias and Gdalewitsch, Georg and Plescher, Engelbert and Pf{\"u}tzenreuter, Lysan}, title = {Experimental in-flight modal-analysis of a sounding rocket structure}, series = {21st ESA Symposium on Rocket and Ballon related Research}, booktitle = {21st ESA Symposium on Rocket and Ballon related Research}, isbn = {9789290922858}, pages = {341 -- 346}, year = {2013}, language = {en} } @inproceedings{DupratDachwaldHilchenbachetal.2013, author = {Duprat, J. and Dachwald, Bernd and Hilchenbach, M. and Engrand, Cecile and Espe, C. and Feldmann, M. and Francke, G. and G{\"o}r{\"o}g, Mark and L{\"u}sing, N. and Langenhorst, Falko}, title = {The MARVIN project: a micrometeorite harvester in Antarctic snow}, series = {44th Lunar and Planetary Science Conference}, booktitle = {44th Lunar and Planetary Science Conference}, year = {2013}, abstract = {MARVIN is an automated drilling and melting probe dedicated to collect pristine interplanetary dust particles (micrometeorites) from central Antarctica snow.}, language = {en} } @book{Schmitz2012, author = {Schmitz, G{\"u}nter}, title = {Elektronik im Kraftfahrzeug : Innovationen bei System und Komponenten ; mit 7 Tabellen / Hrsg.: Schmitz, G{\"u}nter}, publisher = {expert-Verl.}, address = {Renningen}, isbn = {978-3-8169-3110-2}, pages = {185 S. : Ill., graph. Darst.}, year = {2012}, language = {de} } @article{OlaruKowalskiSethietal.2012, author = {Olaru, Alexandra Maria and Kowalski, Julia and Sethi, Vaishali and Bl{\"u}mich, Bernhard}, title = {Exchange relaxometry of flow at small P{\´e}clet numbers in a glass bead pack}, series = {Journal of Magnetic Resonance (JMR)}, volume = {220}, journal = {Journal of Magnetic Resonance (JMR)}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1096-0856}, doi = {10.1016/j.jmr.2012.04.015}, pages = {32 -- 44}, year = {2012}, abstract = {In this paper we consider low P{\´e}clet number flow in bead packs. A series of relaxation exchange experiments has been conducted and evaluated by ILT analysis. In the resulting correlation maps, we observed a collapse of the signal and a translation towards smaller relaxation times with increasing flow rates, as well as a signal tilt with respect to the diagonal. In the discussion of the phenomena we present a mathematical theory for relaxation exchange experiments that considers both diffusive and advective transport. We perform simulations based on this theory and discuss them with respect to the conducted experiments.}, 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} } @book{JanserHavermann2012, author = {Janser, Frank and Havermann, Marc}, title = {Inkompressible Str{\"o}mungen}, publisher = {Mainz}, address = {Aachen}, isbn = {978-3-86130-446-3}, pages = {189 S. : Ill., graph. Darst.}, year = {2012}, language = {en} } @misc{BaumgartnerWunderlichJaunichetal.2012, author = {Baumgartner, Thomas and Wunderlich, Florian and Jaunich, Arthur and Sato, Tomoo and Bundy, Georg and Grießmann, Nadine and Kowalski, Julia and Burghardt, Stefan and Hanebrink, J{\"o}rg}, title = {Lighting the way: Perspectives on the global lighting market}, edition = {2nd ed.}, address = {McKinsey}, pages = {58}, year = {2012}, language = {en} } @inproceedings{FunkeBoernerKeinzetal.2012, author = {Funke, Harald and B{\"o}rner, Sebastian and Keinz, Jan and Kusterer, K. and Kroninger, D. and Kitajima, J. and Kazari, M. and Horikama, A.}, title = {Numerical and experimental characterization of low NOx Micromix combustion principle for industrial hydrogen gas turbine applications}, series = {Proceedings of ASME Turbo Expo 2012}, booktitle = {Proceedings of ASME Turbo Expo 2012}, pages = {11}, year = {2012}, language = {en} } @inproceedings{FunkeBoernerKeinzetal.2012, author = {Funke, Harald and B{\"o}rner, Sebastian and Keinz, Jan and Hendrick, P. and Recker, E.}, title = {Low NOx Hydrogen combustion chamber for industrial gas turbine applications", 14th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery}, series = {ISROMAC-14 : the Forteenth International Symposium on Transport Phenomena and Dynamics of Rotating Machinery ; Honolulu, Hawaii, February 27 - March 02nd, 2012}, booktitle = {ISROMAC-14 : the Forteenth International Symposium on Transport Phenomena and Dynamics of Rotating Machinery ; Honolulu, Hawaii, February 27 - March 02nd, 2012}, year = {2012}, language = {en} } @book{Esch2012, author = {Esch, Thomas}, title = {Experimentelle Untersuchungen an Antriebssystemen von Kraft-, Luft- und Raumfahrzeugen : Vorlesungsumdruck. 2. Aufl. Bd. 2}, publisher = {Fachhochschule Aachen, Lehr- und Forschungsgebiet Thermodynamik und Verbrennungstechnik}, address = {Aachen}, pages = {Getr. Z{\"a}hlung : zahlr. Ill. und graph. Darst.}, year = {2012}, language = {de} } @inproceedings{DachwaldFeldmannEspeetal.2012, author = {Dachwald, Bernd and Feldmann, Marco and Espe, Clemens and Plescher, Engelbert and Konstantinidis, K. and Forstner, R.}, title = {Enceladus explorer - A maneuverable subsurface probe for autonomous navigation through deep ice}, series = {63rd International Astronautical Congress 2012, IAC 2012; Naples; Italy; 1 October 2012 through 5 October 2012. (Proceedings of the International Astronautical Congress, IAC ; 3)}, booktitle = {63rd International Astronautical Congress 2012, IAC 2012; Naples; Italy; 1 October 2012 through 5 October 2012. (Proceedings of the International Astronautical Congress, IAC ; 3)}, publisher = {Curran}, address = {Red Hook, NY}, organization = {International Astronautical Congress <63, 2012, Napoli>}, isbn = {978-1-62276-979-7}, pages = {1756 -- 1766}, year = {2012}, language = {en} } @misc{BagheriDahmann2012, author = {Bagheri, Mohsen and Dahmann, Peter}, title = {Kletterroboter mit Gurtantrieb international [Offenlegungsschrift]}, publisher = {Deutsches Patentamt / Europ{\"a}isches Patentamt / WIPO / USPTO}, address = {M{\"u}nchen / Den Hague / Genf / Alexandria, Virginia}, pages = {1 -- 20}, year = {2012}, language = {de} } @article{LoebSchartnerDachwaldetal.2012, author = {Loeb, Horst Wolfgang and Schartner, Karl-Heinz and Dachwald, Bernd and Ohndorf, Andreas and Seboldt, Wolfgang}, title = {Interstellar heliopause probe}, series = {Труды МАИ}, journal = {Труды МАИ}, number = {60}, publisher = {Moskauer Staatliches Luftfahrtinstitut (МАИ)}, address = {Moskau}, pages = {2 -- 2}, year = {2012}, abstract = {There is common agreement within the scientific community that in order to understand our local galactic environment it will be necessary to send a spacecraft into the region beyond the solar wind termination shock. Considering distances of 200 AU for a new mission, one needs a spacecraft traveling at a speed of close to 10 AU/yr in order to keep the mission duration in the range of less than 25 yrs, a transfer time postulated by European Space Agency (ESA). Two propulsion options for the mission have been proposed and discussed so far: the solar sail propulsion and the ballistic/radioisotope-electric propulsion (REP). As a further alternative, we here investigate a combination of solar-electric propulsion (SEP) and REP. The SEP stage consists of six 22-cms diameter RIT-22 ion thrusters working with a high specific impulse of 7377 s corresponding to a positive grid voltage of 5 kV. Solar power of 53 kW at begin of mission (BOM) is provided by a lightweight solar array.}, language = {en} } @incollection{BorggrafeOhndorfDachwaldetal.2012, author = {Borggrafe, Andreas and Ohndorf, Andreas and Dachwald, Bernd and Seboldt, Wolfgang}, title = {Analysis of interplanetary solar sail trajectories with attitude dynamics}, series = {Dynamics and Control of Space Systems 2012}, booktitle = {Dynamics and Control of Space Systems 2012}, publisher = {Univelt Inc}, address = {San Diego}, isbn = {978-0-87703-587-9}, pages = {1553 -- 1569}, year = {2012}, abstract = {We present a new approach to the problem of optimal control of solar sails for low-thrust trajectory optimization. The objective was to find the required control torque magnitudes in order to steer a solar sail in interplanetary space. A new steering strategy, controlling the solar sail with generic torques applied about the spacecraft body axes, is integrated into the existing low-thrust trajectory optimization software InTrance. This software combines artificial neural networks and evolutionary algorithms to find steering strategies close to the global optimum without an initial guess. Furthermore, we implement a three rotational degree-of-freedom rigid-body attitude dynamics model to represent the solar sail in space. Two interplanetary transfers to Mars and Neptune are chosen to represent typical future solar sail mission scenarios. The results found with the new steering strategy are compared to the existing reference trajectories without attitude dynamics. The resulting control torques required to accomplish the missions are investigated, as they pose the primary requirements to a real on-board attitude control system.}, language = {en} } @article{EschFunkeRoosenetal.2011, author = {Esch, Thomas and Funke, Harald and Roosen, Peter and Jarolimek, Ulrich}, title = {Biogene Automobilkraftstoffe in der allgemeinen Luftfahrt}, series = {Motortechnische Zeitschrift (MTZ).}, volume = {72}, journal = {Motortechnische Zeitschrift (MTZ).}, number = {1}, publisher = {Springer Nature}, address = {Basel}, isbn = {0024-8525}, doi = {10.1365/s35146-011-0013-7}, pages = {54 -- 59}, year = {2011}, language = {de} } @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{EschFunkeRoosenetal.2011, author = {Esch, Thomas and Funke, Harald and Roosen, Peter and Jarolimek, Ulrich}, title = {Biogenic Vehicle Fuels in General Aviation Aircrafts}, series = {MTZ worldwide. 72 (2011), H. 1}, journal = {MTZ worldwide. 72 (2011), H. 1}, publisher = {Springer Automotive Media}, address = {Wiesbaden}, pages = {38 -- 43}, year = {2011}, language = {en} } @article{FunkeBoernerFalketal.2011, author = {Funke, Harald and B{\"o}rner, Sebastian and Falk, F. and Hendrick, P.}, title = {Control system modifications and their effects on the operation of a hydrogen-fueled Auxiliary Power Unit}, series = {XX international symposium on air breathing engines 2011 : ISABE 2011, Gothenburg, Sweden, 12-16 September, 2011. Vol. 2.}, journal = {XX international symposium on air breathing engines 2011 : ISABE 2011, Gothenburg, Sweden, 12-16 September, 2011. Vol. 2.}, publisher = {American Institute of Aeronautics and Astronautics}, address = {Reston, VA}, isbn = {9781618391803}, pages = {929 -- 938}, year = {2011}, language = {en} } @article{FunkeBoernerKrebsetal.2011, author = {Funke, Harald and B{\"o}rner, Sebastian and Krebs, W. and Wolf, E.}, title = {Experimental Characterization of Low NOx Micromix Prototype Combustors for Industrial Gas Turbine Applications}, series = {ASME Turbo Expo 2011 ; Vancouver, Canada, June 6-10, 2011}, journal = {ASME Turbo Expo 2011 ; Vancouver, Canada, June 6-10, 2011}, year = {2011}, 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{DachwaldWurm2011, author = {Dachwald, Bernd and Wurm, Patrick}, title = {Mission analysis and performance comparison for an Advanced Solar Photon Thruster}, series = {Advances in Space Research}, volume = {48}, journal = {Advances in Space Research}, number = {11}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0273-1177}, pages = {1858 -- 1868}, year = {2011}, language = {en} } @article{RobinsonFunkeHendrick2011, author = {Robinson, A. E. and Funke, Harald and Hendrick, P.}, title = {Design and Testing of a Micromix Combustor With Recuperative Wall Cooling for a Hydrogen Fueled µ-Scale Gas Turbine}, series = {Journal of engineering for gas turbines and power}, volume = {133}, journal = {Journal of engineering for gas turbines and power}, number = {8}, publisher = {ASME}, address = {New York}, isbn = {1528-8919}, pages = {Art. Nr. 082301 , 8 Seiten}, year = {2011}, language = {en} }