@inproceedings{SchleupenEngemannBagherietal.2016, author = {Schleupen, Josef and Engemann, Heiko and Bagheri, Mohsen and Kallweit, Stephan}, title = {The potential of SMART climbing robot combined with a weatherproof cabin for rotor blade maintenance}, series = {17th European Conference on Composite Materials - ECCM, Munich, Germany}, booktitle = {17th European Conference on Composite Materials - ECCM, Munich, Germany}, pages = {1 -- 8}, year = {2016}, language = {en} } @article{SchirraWatmuffBauschat2014, author = {Schirra, Julian and Watmuff, Jonathan and Bauschat, J.-Michael}, title = {Highly non-planar lifting systems: a relative assessment of existing potential-methodologies to accurately estimate the induced drag}, series = {32nd AIAA Applied Aerodynamics Conference 2014 : June, 16-20 2014, Atlanta, Ga.}, journal = {32nd AIAA Applied Aerodynamics Conference 2014 : June, 16-20 2014, Atlanta, Ga.}, organization = {American Institute of Aeronautics and Astronautics}, isbn = {978-1-62410-288-2}, doi = {10.2514/6.2014-2988}, pages = {Publ. online}, year = {2014}, language = {en} } @inproceedings{SchirraWatmuffBauschat2014, author = {Schirra, Julian and Watmuff, Jon and Bauschat, J.-Michael}, title = {A relative assessment of existing potential-methodologies to accurately estimate the induced drag of highly non-planar lifting systems}, series = {Advanced aero concepts, design and operations : Applied Aerodynamics Conference : July 22 -24, 2014, Bristol, UK}, booktitle = {Advanced aero concepts, design and operations : Applied Aerodynamics Conference : July 22 -24, 2014, Bristol, UK}, organization = {Applied Aerodynamics Conference <2014, Bristol>}, pages = {1 -- 13}, year = {2014}, 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} } @article{SchirraBissonnetteBramesfeld2018, author = {Schirra, Julian and Bissonnette, William and Bramesfeld, G{\"o}tz}, title = {Wake-model effects on induced drag prediction of staggered boxwings}, series = {Aerospace}, volume = {5}, journal = {Aerospace}, number = {1}, issn = {2226-4310}, doi = {10.3390/aerospace5010014}, year = {2018}, 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} } @inproceedings{SchildtMarzoccaBraunetal.2019, author = {Schildt, Philipp and Marzocca, Pier and Braun, Carsten and Dahmann, Peter and Keimer, Jona}, title = {Effects of atmospheric excitation on vibration based condition monitoring methods for hybrid-electric aircraft propulsion systems}, series = {AIAC 2018: 18th Australian International Aerospace Congress: HUMS - 11th Defence Science and Technology (DST) International Conference on Health and Usage Monitoring (HUMS 2019): ISSFD - 27th International Symposium on Space Flight Dynamics (ISSFD)}, booktitle = {AIAC 2018: 18th Australian International Aerospace Congress: HUMS - 11th Defence Science and Technology (DST) International Conference on Health and Usage Monitoring (HUMS 2019): ISSFD - 27th International Symposium on Space Flight Dynamics (ISSFD)}, isbn = {9781925627213}, pages = {923 -- 928}, year = {2019}, language = {en} } @article{SchildtBraunMarzocca2019, author = {Schildt, Ph. and Braun, Carsten and Marzocca, P.}, title = {Metric evaluating potentials of condition-monitoring approaches for hybrid electric aircraft propulsion systems}, series = {CEAS Aeronautical Journal}, journal = {CEAS Aeronautical Journal}, publisher = {Springer}, address = {Berlin}, issn = {1869-5590}, doi = {10.1007/s13272-019-00411-3}, pages = {1 -- 14}, year = {2019}, language = {en} } @inproceedings{SchildtBraunMarcocca2017, author = {Schildt, P. and Braun, Carsten and Marcocca, P.}, title = {Flight testing the extra 330LE flying testbed}, series = {48th Annual International Symposium of the Society of Flight Test Engineers 2017}, booktitle = {48th Annual International Symposium of the Society of Flight Test Engineers 2017}, isbn = {978-151085387-4}, pages = {349 -- 362}, year = {2017}, language = {en} } @inproceedings{SchartnerLoebDachwaldetal.2009, author = {Schartner, Karl-Heinz and Loeb, H. W. and Dachwald, Bernd and Ohndorf, Andreas}, title = {Perspectives of electric propulsion for outer planetary and deep space missions}, series = {European Planetary Science Congress 2009}, booktitle = {European Planetary Science Congress 2009}, pages = {416 -- 416}, year = {2009}, abstract = {Solar-electric propulsion (SEP) is superior with respect to payload capacity, flight time and flexible launch window to the conventional interplanetary transfer method using chemical propulsion combined with gravity assists. This fact results from the large exhaust velocities of electric low-thrust propulsion and is favourable also for missions to the giant planets, Kuiper-belt objects and even for a heliopause probe (IHP) as shown in three studies by the authors funded by DLR. They dealt with a lander for Europa and a sample return mission from a mainbelt asteroid [1], with the TANDEM mission [2]; the third recent one investigates electric propulsion for the transfer to the edge of the solar system. All studies are based on triple-junction solar arrays, on rf-ion thrusters of the qualified RIT-22 type and they use the intelligent trajectory optimization program InTrance [3].}, language = {en} } @article{SchaelAtanasyanBerdugoetal.2019, author = {Schael, S. and Atanasyan, A. and Berdugo, J. and Bretz, T. and Czupalla, Markus and Dachwald, Bernd and Doetinchem, P. von and Duranti, M. and Gast, H. and Karpinski, W. and Kirn, T. and L{\"u}belsmeyer, K. and Ma{\~n}a, C. and Marrocchesi, P.S. and Mertsch, P. and Moskalenko, I.V. and Schervan, T. and Schluse, M. and Schr{\"o}der, K.-U. and Schultz von Dratzig, A. and Senatore, C. and Spies, L. and Wakely, S.P. and Wlochal, M. and Uglietti, D. and Zimmermann, J.}, title = {AMS-100: The next generation magnetic spectrometer in space - An international science platform for physics and astrophysics at Lagrange point 2}, series = {Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment}, volume = {944}, journal = {Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment}, number = {162561}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0168-9002}, doi = {10.1016/j.nima.2019.162561}, year = {2019}, language = {en} } @article{SaretzkiBergmannDahmannetal.2021, author = {Saretzki, Charlotte and Bergmann, Ole and Dahmann, Peter and Janser, Frank and Keimer, Jona and Machado, Patricia and Morrison, Audry and Page, Henry and Pluta, Emil and St{\"u}bing, Felix and K{\"u}pper, Thomas}, title = {Are small airplanes safe with regards to COVID-19 transmission?}, series = {Journal of Travel Medicine}, volume = {28}, journal = {Journal of Travel Medicine}, number = {7}, publisher = {Oxford University Press}, address = {Oxford}, issn = {1708-8305}, doi = {10.1093/jtm/taab105}, year = {2021}, language = {en} } @misc{SalberPischingerEschetal.1998, author = {Salber, Wolfgang and Pischinger, Martin and Esch, Thomas and Hagen, J{\"u}rgen}, title = {Kaltstartverfahren f{\"u}r eine drosselfreie Mehrzylinder-Kolbenbrennkraftmaschine}, year = {1998}, abstract = {Die Erfindung betrifft ein Kaltstartverfahren f{\"u}r eine Mehrzylinder-Kolbenbrennkraftmaschine mit Anlasser und einer Motorsteuerung zur Ansteuerung von Kraftstoffeinspritzeinrichtungen, Z{\"u}ndung und voll variabel elektromagnetisch bet{\"a}tigbaren Gaswechselventilen an den einzelnen Zylindern, bei dem die Kurbelwelle {\"u}ber den Anlasser gedreht wird und zum Start f{\"u}r wenigstens einen Zylinder die dazugeh{\"o}rigen Gaswechselventile, die Kraftstoffeinspritzeinrichtung und die Z{\"u}ndung in einem vorgegebenen Taktzyklus angesteuert werden und zwar in den ersten Arbeitszyklen mit "Sp{\"a}tem Einlaß {\"O}ffnen".}, language = {de} } @article{SaffeLodewiksHaasetal.1989, author = {Saffe, P. and Lodewiks, J. and Haas, H.-J. and Feigel, H.-J. and Ulrich, H. and Mauer, J. and Ortwig, H. and Dahmann, Peter and Rotth{\"a}user, S. and Tao, J. and Ohlischl{\"a}ger, O. and Scholz, D. and Bergmann, M. and Anders, P.}, title = {Neues von ASB Antreiben - Steuern - Bewegen}, series = {{\"O}lhydraulik und Pneumatik. Vol. 33 (1989), H. 7}, journal = {{\"O}lhydraulik und Pneumatik. Vol. 33 (1989), H. 7}, issn = {0341-2660}, pages = {550 -- 572}, year = {1989}, language = {de} } @inproceedings{RoethStark2009, author = {R{\"o}th, Thilo and Stark, R.}, title = {Die Rolle der virtuellen Produktentstehung bei der Integration von Karosseriesystemen}, series = {Karosseriekongress Systemintegration in der Karosserietechnik : 17. und 18. M{\"a}rz 2009 in Baden-Baden / Kongressleitung: Reiner Stark}, booktitle = {Karosseriekongress Systemintegration in der Karosserietechnik : 17. und 18. M{\"a}rz 2009 in Baden-Baden / Kongressleitung: Reiner Stark}, publisher = {VDI-Wissensforum}, address = {D{\"u}sseldorf}, isbn = {978-3-9812624-4-5}, pages = {175 S. : zahlr. Ill., graph. Darst.}, year = {2009}, language = {de} } @article{RoethSchreiber2003, author = {R{\"o}th, Thilo and Schreiber, Harold}, title = {CAKE (Computer Aided Kinematic Engineering) im Karrosseriebau und in der passiven Fahrzeugsicherheit / Schreiber , Harold ; R{\"o}th, Thilo}, series = {Mobiles. 2002/2003 (2003), H. 33}, journal = {Mobiles. 2002/2003 (2003), H. 33}, pages = {65 -- 67}, year = {2003}, language = {de} } @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} } @incollection{RoethPielen2018, author = {R{\"o}th, Thilo and Pielen, Michael}, title = {Personal Public Vehicle - ein urbanes Fahrzeugkonzept f{\"u}r die „Shared Mobility" der Zukunft}, series = {Karosseriebautage Hamburg 2018, 16. ATZ-Fachtagung}, booktitle = {Karosseriebautage Hamburg 2018, 16. ATZ-Fachtagung}, publisher = {Springer Vieweg}, address = {Wiesbaden}, doi = {10.1007/978-3-658-22038-9_13}, pages = {189 -- 199}, year = {2018}, abstract = {Die urbane Mobilit{\"a}t ist im Wandel und insbesondere neue innovative Gesch{\"a}ftsmodelle werden einen wesentlichen Teil zur L{\"o}sung von k{\"u}nftigen Mobilit{\"a}tsbed{\"u}rfnissen beitragen. Die sogenannte „Shared Mobility" gilt aktuell neben der Elektrifizierung des Antriebes und autonomem Fahrzeugtechnologien als einer der wichtigsten Trendthemen in der Automobilindustrie. Neue Mobilit{\"a}tsdienstleistungen verlangen dabei verst{\"a}rkt auch neue Fahrzeugkonzepte.}, language = {de} } @article{RoethNowackOberschelpetal.2009, author = {R{\"o}th, Thilo and Nowack, Niels and Oberschelp, Christian and Lao, Bin}, title = {Gute Perspektiven f{\"u}r Stahl-Alumnium-Hybride im Automotivebereich / Nowack, Niels ; Oberschelp, Christian ; Lao, Bin ; Klaus, Gerald ; B{\"u}hrig-Polaczek, Andreas ; R{\"o}th, Thilo}, series = {Giesserei : die Zeitschrift f{\"u}r Technik, Innovation und Management. 96 (2009), H. 5}, journal = {Giesserei : die Zeitschrift f{\"u}r Technik, Innovation und Management. 96 (2009), H. 5}, isbn = {0016-9765}, pages = {110 -- 123}, year = {2009}, language = {de} } @article{RoethNowackBaumeister2006, author = {R{\"o}th, Thilo and Nowack, N. and Baumeister, E.}, title = {Numerische L{\"o}sungsans{\"a}tze zur Auslegung von Stahl-Leichtmetall-Hybriden aus Verbundguss f{\"u}r zuk{\"u}nftige Fahrzeugstrukturen / Nowack, N. ; R{\"o}th, T. ; Baumeister, E.}, series = {Berechnung und Simulation im Fahrzeugbau. Bd. 1 : Tagung W{\"u}rzburg, 27. und 28. September 2006 = Numerical analysis and simulation in vehicle engineering / VDI-Gesellschaft Fahrzeug- und Verkehrstechnik}, journal = {Berechnung und Simulation im Fahrzeugbau. Bd. 1 : Tagung W{\"u}rzburg, 27. und 28. September 2006 = Numerical analysis and simulation in vehicle engineering / VDI-Gesellschaft Fahrzeug- und Verkehrstechnik}, publisher = {VDI-Verl.}, address = {D{\"u}sseldorf}, isbn = {3-18-091967-1}, pages = {363 -- 368}, year = {2006}, language = {de} } @article{RoethKernKirchneretal.2009, author = {R{\"o}th, Thilo and Kern, Daniel and Kirchner, Karsten and Vietor, Thomas}, title = {Flexbody : Baukastensystem f{\"u}r Karosseriestrukturen / Kern, Daniel ; R{\"o}th, Thilo ; Kirchner, Karsten ; Vietor, Thomas}, series = {Mobiles : Fachzeitschrift f{\"u}r Konstrukteure. 35 (2009), H. 2009/2010}, journal = {Mobiles : Fachzeitschrift f{\"u}r Konstrukteure. 35 (2009), H. 2009/2010}, publisher = {Hochsch. f{\"u}r Angewandte Wiss.}, address = {Hamburg}, pages = {73 -- 75}, year = {2009}, language = {de} } @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} } @incollection{RoethDeutskensKreiskoetheretal.2018, author = {R{\"o}th, Thilo and Deutskens, Christoph and Kreisk{\"o}ther, Kai and Heimes, Heiner Hans and Schittny, Bastian and Ivanescu, Sebastian and Kleine B{\"u}ning, Max and Reinders, Christian and Wessels, Saskia and Haunreiter, Andreas and Reisgen, Uwe and Thiele, Regina and Hameyer, Kay and Doncker, Rik W. de and Sauer, Uwe and Hoek, Hauke van and H{\"u}bner, Mareike and Hennen, Martin and Stolze, Thilo and Vetter, Andreas and Hagedorn, J{\"u}rgen and M{\"u}ller, Dirk and Rewitz, Kai and Wesseling, Mark and Flieger, Bj{\"o}rn}, title = {Entwicklung von elektrofahrzeugspezifischen Systemen}, series = {Elektromobilit{\"a}t}, booktitle = {Elektromobilit{\"a}t}, publisher = {Springer Vieweg}, address = {Berlin, Heidelberg}, isbn = {978-3-662-53137-2}, doi = {10.1007/978-3-662-53137-2_6}, pages = {279 -- 386}, year = {2018}, abstract = {Die Batterie ist eine der absolut zentralen Komponenten des Elektrofahrzeugs. Die serielle Entwicklung und Produktion dieser Batterien und die Verbesserung der Leistungen wird entscheidend f{\"u}r den Erfolg der Elektromobilit{\"a}t sein. Die Batterie ist jedoch nicht das einzige elektrofahrzeugspezifische System, das neu entwickelt, umkonzipiert oder verbessert werden muss. So sind ebenso die Entwicklung der neuen Fahrzeugstruktur sowie des elektrifizierten Antriebsstranges Teil dieses Kapitels. Weiterhin wird ein Blick auf das bedeutende Thema des Thermomanagements geworfen.}, language = {de} } @book{Roeth2001, author = {R{\"o}th, Thilo}, title = {Konstruktive und versuchstechnische Entwicklungswerkzeuge zur Gestaltung "fußg{\"a}ngerfreundlicher" Pkw-Vorderwagen : Elektronische Ressource / vorgelegt von Thilo R{\"o}th}, address = {Essen}, pages = {III, 124 S. : Ill., graph. Darst.}, year = {2001}, language = {de} } @inproceedings{RuppKuperjansSchulze2016, author = {Rupp, Matthias and Kuperjans, Isabel and Schulze, Sven}, title = {Energetische und {\"o}kologische Bewertung hybrider Antriebe im st{\"a}dtischen Busverkehr}, series = {Commercial vehicle technology 2016 : proceedings of the 4th Commercial Vehicle Technology Symposium (CVT 2016), March 8-10, 2016, University of Kaiserslautern, Kaiserslautern, Germany}, booktitle = {Commercial vehicle technology 2016 : proceedings of the 4th Commercial Vehicle Technology Symposium (CVT 2016), March 8-10, 2016, University of Kaiserslautern, Kaiserslautern, Germany}, editor = {Berns, Karsten}, publisher = {Shaker}, address = {Aachen}, organization = {Internationales Commercial Vehicle Technology Symposium <4, 2016, Kaiserslautern>}, pages = {227 -- 237}, year = {2016}, abstract = {In Anbetracht weltweit zunehmend strengerer klimapolitischer Ziele steigt auch der Druck f{\"u}r Nutzfahrzeughersteller, effizientere und umweltfreundlichere Technologien zu entwickeln. Den Blick bei der Bewertung dieser ausschließlich auf die Fahrzeugnutzung zu richten, ist l{\"a}ngst nicht mehr zufriedenstellend. Im Rahmen dieser Analyse wird ein gegenw{\"a}rtig auf dem Markt erwerblicher und in deutschen St{\"a}dten bereits seit Jahren betriebener Hybridbus energetisch und {\"o}kologisch mit einem konventionell angetriebenen, nahezu baugleichen Modell entlang des Lebensweges bewertet. Nach Definition von Ziel und Untersuchungsrahmen wird ein {\"U}berblick auf bereits durchgef{\"u}hrte Lebenszyklusanalysen zu Hybridbussen im Stadtverkehr gegeben und Schlussfolgerungen f{\"u}r die anschließende Analyse abgeleitet. Diese wird im Rahmen einer energetischen und {\"o}kologischen Bewertung beider Produktsysteme anhand der Parameter "Prim{\"a}renergieeinsatz" und "CO2{\"a}q Emissionen" praktiziert. Der Fahrzeugrumpf beider Fahrzeuge des gleichen Modells wird dabei als einheitlich angenommen, sodass bei dem Vergleich der Herstellung vereinfacht nur die sich unterscheidenden Komponenten des Antriebstranges ber{\"u}cksichtigt werden. Die Resultate der Wirkungsabsch{\"a}tzung werden als Differenz des Hybridbusses gegen{\"u}ber dem Referenzfahrzeug {\"u}ber die einzelnen Lebenszyklusphasen dargestellt. Schließlich werden Prognosen getroffen, ab welcher Strecke die bei der Herstellung erzeugten h{\"o}heren CO2{\"a}q Emissionen des Hybridantriebstranges gegen{\"u}ber dem Referenzmodell ausgeglichen werden.}, language = {de} } @misc{Rosenkranz2001, author = {Rosenkranz, Josef}, title = {{\"U}berwachungsvorrichtung f{\"u}r eine Auswuchtmaschine : Patentschrift}, publisher = {Deutsches Patent- und Markenamt}, address = {M{\"u}nchen}, pages = {6 S. : graph. Darst.}, year = {2001}, language = {de} } @inproceedings{Rosenkranz1993, author = {Rosenkranz, Josef}, title = {Verbesserung der Laufruhe des Verbrennungsmotors durch abgestimmte qualit{\"a}tssteigernde Maßnahmen beim Auswuchten des Kurbeltriebs}, series = {Antriebstechnisches Kolloquium '93 / Industrieentwicklungen und Forschungsergebnisse f{\"u}r die Maschinen{\"u}berwachung und die Konstruktion in der Antriebstechnik. - (Reihe IME-Leitfaden)}, booktitle = {Antriebstechnisches Kolloquium '93 / Industrieentwicklungen und Forschungsergebnisse f{\"u}r die Maschinen{\"u}berwachung und die Konstruktion in der Antriebstechnik. - (Reihe IME-Leitfaden)}, publisher = {Verl. T{\"U}V Rheinland}, address = {K{\"o}ln}, isbn = {3-8249-0139-0}, pages = {176 -- 199}, year = {1993}, language = {de} } @phdthesis{Rosenkranz1989, author = {Rosenkranz, Josef}, title = {Die Gleitlagergeh{\"a}usesteifigkeit als modaler Parameter f{\"u}r Rotorsysteme}, address = {Aachen}, pages = {VI, 145 S. : Ill., zahlr. graph. Darst.}, year = {1989}, language = {de} } @techreport{Rosenkranz1989, author = {Rosenkranz, Josef}, title = {Ber{\"u}cksichtigung des Einflusses von Gleitlagergeh{\"a}usen auf das dynamische Verhalten von Rotoren : Abschlußbericht : Forschungsvorhaben Nr. 128 "Gleitlagergeh{\"a}usesteifigkeit" ; Berichtszeitraum 1985-1988. - (Forschungsheft / Forschungsvereinigung Antriebstechnik e.V. ; 303)}, publisher = {FVA}, address = {Frankfurt am Main}, pages = {70 S : Ill., graph. Darst}, year = {1989}, language = {de} } @inproceedings{RoosenFeyerl2015, author = {Roosen, Petra and Feyerl, G{\"u}nter}, title = {Gender-specific perception and utilization of personal use vehicles}, series = {FISITA World Automotive Congress 2014 : Maastricht, The Netherlands, 2 - 6 June / [organised by the International Federation of Automotive Engineering Societies (FISITA) ...]. Bd. 1}, booktitle = {FISITA World Automotive Congress 2014 : Maastricht, The Netherlands, 2 - 6 June / [organised by the International Federation of Automotive Engineering Societies (FISITA) ...]. Bd. 1}, publisher = {Curran}, address = {Red Hook, NY}, isbn = {978-1-5108-0209-4}, pages = {418 -- 425}, year = {2015}, 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{RobinsonFunkeWagemakersetal.2009, author = {Robinson, A. E. and Funke, Harald and Wagemakers, R. and Grossen, J. and Bosschaerts, W. and Hendrick, P.}, title = {Numerical and Experimental Investigation of a Micromix Combustor for a Hydrogen Fuelled μ-Scale Gas Turbine}, series = {Proceedings of the ASME Turbo Expo 2009 : : presented at the 2009 ASME Turbo Expo, June 8 - 12, 2009, Orlando, Florida, USA / sponsored by the International Gas Turbine Institute}, journal = {Proceedings of the ASME Turbo Expo 2009 : : presented at the 2009 ASME Turbo Expo, June 8 - 12, 2009, Orlando, Florida, USA / sponsored by the International Gas Turbine Institute}, publisher = {ASME}, address = {New York, NY}, isbn = {9780791848869}, pages = {253 -- 262}, year = {2009}, language = {en} } @article{RobinsonFunkeHendricketal.2008, author = {Robinson, A. E. and Funke, Harald and Hendrick, P. and Recker, E. and Peirs, J.}, title = {Development of a hydrogen fuelled 1 kW ultra micro gas turbine with special respect to designing, testing and mapping of the µ-scale combustor}, series = {IEEE International Conference on Sustainable Energy Technologies, 2008 : ICSET 2008 ; Singapore, 24 - 27 Nov. 2008.}, journal = {IEEE International Conference on Sustainable Energy Technologies, 2008 : ICSET 2008 ; Singapore, 24 - 27 Nov. 2008.}, publisher = {IEEE}, address = {Piscataway, NJ}, isbn = {978-1-4244-1887-9}, pages = {656 -- 660}, year = {2008}, 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} } @inproceedings{RingsLudowicyFingeretal.2019, author = {Rings, Ren{\´e} and Ludowicy, Jonas and Finger, Felix and Braun, Carsten and Bil, Cees}, title = {Sensitivity Analysis of General Aviation Aircraft with Parallel Hybrid-Electric Propulsion Systems}, series = {Asia Pacific International Symposium on Aerospace Technology. APISAT 2019}, booktitle = {Asia Pacific International Symposium on Aerospace Technology. APISAT 2019}, pages = {14 Seiten}, year = {2019}, language = {en} } @misc{ReiswichBrandtCzupalla2019, author = {Reiswich, Martin and Brandt, Hannes and Czupalla, Markus}, title = {Passive thermal control by integration of phase change material into additively manufactured structures}, series = {E2. 47th Student conference}, journal = {E2. 47th Student conference}, year = {2019}, abstract = {Optical Instruments require an extremely stable thermal surrounding to prevent loss of data quality by misalignments of the instrument components resulting from material deformation due to temperature f luctuations (e.g. from solar intrusion). Phase Change Material (PCM) can be applied as a thermal damper to achieve a more uniform temperature distribution. The challenge of this method is, among others, the integration of PCM into affected areas. If correctly designed, incoming heat is latently absorbed during phase change of the PCM, i.e. the temperature of a structure remains almost constant. In a cold phase, the heat during phase change is released again latently until the PCM returns to its original state of aggregation. Thus, the structure is thermally stabilized. At FH Aachen- University of Applied Sciences research is conducted to apply PCM directly into the structures of affected components (baffles, optical benches, electronic boxes, etc.). Through the application of Additive Manufacturing, the necessary voids are directly printed into these structures and filled later with PCM. Additive Manufacturing enables complex structures that would not have been possible with conservative manufacturing methods. A corresponding Breadboard was developed and manufactured by Selective Laser Melting (SLM). The current state of research includes the handling and analysis of the Breadboard, tests and a correlation of the thermal model. The results have shown analytically and practically that it is possible to use PCM as an integral part of the structure as a thermal damper. The results serve as a basis for the further development of the technology, which should maximize performance and enable the integration of PCM into much more complex structures.}, language = {en} } @incollection{ReimerWellmerBraunetal.2009, author = {Reimer, Lars and Wellmer, Georg and Braun, Carsten and Ballmann, Josef}, title = {Computational methods for aero-structural analysis and optimisation of aircrafts based on reduced-order structural models}, series = {MEGADESIGN and MegaOpt - German initiatives for aerodynamic simulation and optimization in aircraft design. Results of the closing symposium of the MEGADESIGN and MegaOpt projects, Braunschweig, Germany, 23 - 24 May, 2007 / Norbert Kroll ... (Eds.) Notes on numerical fluid mechanics and multidisciplinary design. Vol. 107}, booktitle = {MEGADESIGN and MegaOpt - German initiatives for aerodynamic simulation and optimization in aircraft design. Results of the closing symposium of the MEGADESIGN and MegaOpt projects, Braunschweig, Germany, 23 - 24 May, 2007 / Norbert Kroll ... (Eds.) Notes on numerical fluid mechanics and multidisciplinary design. Vol. 107}, publisher = {Springer}, address = {Berlin}, isbn = {978-3-642-04092-4}, pages = {135 -- 150}, year = {2009}, abstract = {In this part of the MEGADESIGN project, aeroelastic effects are introduced into the aerodynamic analysis of aircrafts by coupling DLR's flow solvers TAU and FLOWer to a Timoshenko-beam solver. The emerging aeroelastic solvers and a method for the automatic identification of Timoshenko-beam models for wing-box structures were integrated into a simulation environment enabling the combined optimisation of aerodynamic wing shape and structure.}, language = {en} } @techreport{ReimerWellmerBraunetal.2007, author = {Reimer, Lars and Wellmer, Georg and Braun, Carsten and Ballmann, Josef}, title = {Aerodynamische Simulation und Optimierung in der Flugzeugentwicklung. Teilvorhabenbezeichnung: Aerodynamische Optimierung unter Ber{\"u}cksichtigung von Struktureigenschaften auf der Basis reduzierter Strukturmodelle, Verbundvorhaben MEGADESIGN. Schlussbericht. Berichtszeitraum: 01.06.2003-31.05.2007. BMBF-Forschungsbericht}, pages = {41 S.: Ill., graph. Darst.}, year = {2007}, language = {de} } @incollection{ReimerBraunWellmeretal.2010, author = {Reimer, Lars and Braun, Carsten and Wellmer, Georg and Behr, Marek and Ballmann, Josef}, title = {Development of a modular method for computational aero-structural analysis of aircraft}, series = {Summary of flow modulation and fluid-structure interaction findings. Results of the Collaborative Research Center SFB 401 at the RWTH Aachen University, Aachen, Germany, 1997-2008 / ed.: Wolfgang Schr{\"o}der. Notes on numerical fluid mechanics and multidisciplinary design. Vol. 109}, booktitle = {Summary of flow modulation and fluid-structure interaction findings. Results of the Collaborative Research Center SFB 401 at the RWTH Aachen University, Aachen, Germany, 1997-2008 / ed.: Wolfgang Schr{\"o}der. Notes on numerical fluid mechanics and multidisciplinary design. Vol. 109}, publisher = {Springer}, address = {Berlin}, isbn = {978-3-642-04087-0}, pages = {205 -- 238}, year = {2010}, language = {en} } @inproceedings{ReimerBraunChenetal.2007, author = {Reimer, Lars and Braun, Carsten and Chen, B.-H. and Ballmann, Josef}, title = {Computational aeroelastic analysis and design of the HIRENASD wind tunnel wing model and tests}, series = {Proceedings / IFASD 2007, CEAS/AIAA/KTH International Forum on Aeroelasticity and Structural Dynamics : June 18 - 21, 2007, Stockholm, Sweden}, booktitle = {Proceedings / IFASD 2007, CEAS/AIAA/KTH International Forum on Aeroelasticity and Structural Dynamics : June 18 - 21, 2007, Stockholm, Sweden}, publisher = {KTH}, address = {Stockholm}, pages = {1 CD-ROM}, year = {2007}, language = {en} } @incollection{ReimerBraunBallmann2007, author = {Reimer, Lars and Braun, Carsten and Ballmann, Josef}, title = {Computational study of the aeroelastic equilibrium configuration of a swept wind tunnel wing model in subsonic flow}, series = {High performance computing in science and engineering '06. Transactions of the High Performance Computing Center Stuttgart (HLRS) 2006 / Wolfgang E. Nagel ... Eds.}, booktitle = {High performance computing in science and engineering '06. Transactions of the High Performance Computing Center Stuttgart (HLRS) 2006 / Wolfgang E. Nagel ... Eds.}, publisher = {Springer}, address = {Berlin [u.a.]}, isbn = {978-3-540-36165-7}, pages = {421 -- 434}, year = {2007}, abstract = {In the Collaborative Research Center SFB 401 at RWTH Aachen University, the numerical aeroelastic method SOFIA for direct numerical aeroelastic simulation is being progressively developed. Numerical results obtained by applying SOFIA were compared with measured data of static and dynamic aeroelastic wind tunnel tests for an elastic swept wing in subsonic flow.}, language = {en} } @inproceedings{ReimerBraunBallmann2006, author = {Reimer, Lars and Braun, Carsten and Ballmann, Josef}, title = {Analysis of the static and dynamic aero-structural response of an elastic swept wing model by direct aeroelastic simulation}, series = {ICAS 2006 proceedings : 25th Congress of the International Council of the Aeronautical Sciences ; Hamburg, Germany, 3 - 8 September, 2006 : 25th International Congress of Aeronautical Sciences}, booktitle = {ICAS 2006 proceedings : 25th Congress of the International Council of the Aeronautical Sciences ; Hamburg, Germany, 3 - 8 September, 2006 : 25th International Congress of Aeronautical Sciences}, publisher = {Optimage}, address = {Edinburgh}, organization = {International Council of the Aeronautical Sciences (ICAS)}, isbn = {0-9533991-7-6}, pages = {Paper No. 2006-10.3.3}, year = {2006}, language = {en} } @article{ReckerBosschaertsWagemakersetal.2010, author = {Recker, Elmar and Bosschaerts, Walter and Wagemakers, Rolf and Hendrick, Patrick and Funke, Harald and B{\"o}rner, Sebastian}, title = {Experimental study of a round jet in cross-flow at low momentum ratio}, series = {15th International Symposium on Applications of Laser Techniques to Fluid Mechanics Lisbon, Portugal, 05-08 July, 2010 - 1}, journal = {15th International Symposium on Applications of Laser Techniques to Fluid Mechanics Lisbon, Portugal, 05-08 July, 2010 - 1}, pages = {1 -- 13}, year = {2010}, language = {en} } @misc{RainerRoestelWahle2006, author = {Rainer, N{\"a}hle and R{\"o}stel, Reinhard and Wahle, Michael}, title = {Lagerungssystem in einem Raumfahrzeug : Patentschrift}, publisher = {Deutsches Patent- und Markenamt}, address = {M{\"u}nchen}, pages = {7 S.: graph. Darst.}, year = {2006}, language = {de} } @inproceedings{QuitterMarinoBauschat2019, author = {Quitter, Julius and Marino, Matthew and Bauschat, J.-Michael}, title = {Highly Non-Planar Aircraft Configurations: Estimation of Flight Mechanical Derivatives Using Low-Order Methods}, series = {Deutscher Luft- und Raumfahrtkongress 2019, DLRK 2019. Darmstadt, Germany}, booktitle = {Deutscher Luft- und Raumfahrtkongress 2019, DLRK 2019. Darmstadt, Germany}, pages = {10 Seiten}, year = {2019}, language = {en} } @article{PolaczekHenn2008, author = {Polaczek, Christa and Henn, Gudrun}, title = {Gute Vorkenntnisse verk{\"u}rzen die Studienzeit}, series = {Mathematikinformation : eine Zeitschrift von Begabtenf{\"o}rderung Mathematik e.V.}, volume = {2008}, journal = {Mathematikinformation : eine Zeitschrift von Begabtenf{\"o}rderung Mathematik e.V.}, number = {49}, publisher = {Begabtenf{\"o}rderung Mathematik}, address = {Neubiberg}, issn = {1612-9156}, pages = {46 -- 50}, year = {2008}, language = {de} } @misc{Polaczek1983, author = {Polaczek, Christa}, title = {Kofaser - Kategorien und differentielle Algebren}, publisher = {Math. Inst. der Univ.}, address = {Bonn}, pages = {178 S. : Anh.}, year = {1983}, language = {de} } @phdthesis{Polaczek1995, author = {Polaczek, Christa}, title = {Automatische 3-dimensionale FEM-Netzgenerierung f{\"u}r die Formf{\"u}ll- und Erstarrungssimulation. - (Fortschrittberichte VDI : Reihe 20, Rechnerunterst{\"u}tzte Verfahren ; 182)}, number = {Als Ms. gedr.}, publisher = {VDI-Verl.}, address = {D{\"u}sseldorf}, isbn = {3-18-318220-3}, pages = {VII, 131 S. : Ill., graph. Darst.}, year = {1995}, language = {de} } @inproceedings{PlescherMathiakWillnecker2005, author = {Plescher, Engelbert and Mathiak, Gerhard and Willnecker, Rainer}, title = {Technical aspects of liquid diffusion model experiments}, series = {55th International Astronautical Congress : October 4 - 8, 2004, Vancouver, Canada / International Astronautical Federation. Bd. 8. IAC-04-J.5.04}, booktitle = {55th International Astronautical Congress : October 4 - 8, 2004, Vancouver, Canada / International Astronautical Federation. Bd. 8. IAC-04-J.5.04}, publisher = {International Astronautical Federation}, address = {Paris}, organization = {International Astronautical Congress <55, 2004, Vancouver>}, pages = {5019 -- 5025}, year = {2005}, language = {en} } @misc{PischingerEschDuesmann2006, author = {Pischinger, Martin and Esch, Thomas and Duesmann, Klaus}, title = {Elektromagnetischer Aktuator mit gelenkig abgest{\"u}tzter R{\"u}ckstellfeder}, year = {2006}, abstract = {Die Erfindung betrifft einen elektromagnetischen Aktuator zur Bet{\"a}tigung eines Stellgliedes (7) mit wenigstens einem gesteuert bestrombaren Elektromagneten (1, 2) und einem mit dem Stellglied (7) in Wirkverbindung stehenden Anker (5), der bei Bestromung des Elektromagneten (1, 2) gegen die Kraft wenigstens einer an einem Geh{\"a}use (12) abgest{\"u}tzten R{\"u}ckstellfeder (10) an der Polfl{\"a}che (3, 4) des Elektromagneten (1, 2) zur Anlage kommt, und daß zumindest der Anker (5) {\"u}ber eine sph{\"a}rische Gelenkanordnung (11) auf der R{\"u}ckstellfeder (10) abgest{\"u}tzt ist.}, language = {de} } @inproceedings{PirovanoSeefeldtDachwaldetal.2015, author = {Pirovano, Laura and Seefeldt, Patric and Dachwald, Bernd and Noomen, Ron}, title = {Attitude and Orbital Dynamics Modeling for an Uncontrolled Solar-Sail Experiment in Low-Earth Orbit}, series = {25th International Symposium on Spaceflight Dynamics, 2015, Munich, Germany}, booktitle = {25th International Symposium on Spaceflight Dynamics, 2015, Munich, Germany}, pages = {15 S.}, year = {2015}, language = {en} } @inproceedings{PirovanoSeefeldtDachwaldetal.2015, author = {Pirovano, Laura and Seefeldt, Patric and Dachwald, Bernd and Noomen, Ron}, title = {Attitude and orbital modeling of an uncontrolled solar-sail experiment in low-Earth orbit}, series = {25th International Symposium on Space Flight Dynamics ISSFD}, booktitle = {25th International Symposium on Space Flight Dynamics ISSFD}, pages = {1 -- 15}, year = {2015}, abstract = {Gossamer-1 is the first project of the three-step Gossamer roadmap, the purpose of which is to develop, prove and demonstrate that solar-sail technology is a safe and reliable propulsion technique for long-lasting and high-energy missions. This paper firstly presents the structural analysis performed on the sail to understand its elastic behavior. The results are then used in attitude and orbital simulations. The model considers the main forces and torques that a satellite experiences in low-Earth orbit coupled with the sail deformation. Doing the simulations for varying initial conditions in attitude and rotation rate, the results show initial states to avoid and maximum rotation rates reached for correct and faulty deployment of the sail. Lastly comparisons with the classic flat sail model are carried out to test the hypothesis that the elastic behavior does play a role in the attitude and orbital behavior of the sail}, language = {en} } @incollection{PielenRoethFlatten2018, author = {Pielen, Michael and R{\"o}th, Thilo and Flatten, T.}, title = {Erfolgsfaktoren k{\"u}nftiger Gesch{\"a}ftsmodelle von urbanen, geteilten Mobilit{\"a}tsdienstleistungen}, series = {Mobilit{\"a}t und digitale Transformation. (9. Wissenschaftsforum Mobilit{\"a}t. Tagungsband)}, booktitle = {Mobilit{\"a}t und digitale Transformation. (9. Wissenschaftsforum Mobilit{\"a}t. Tagungsband)}, editor = {Proff, H.}, publisher = {Springer Gabler}, address = {Wiesbaden}, isbn = {978-3-658-20779-3}, doi = {10.1007/978-3-658-20779-3_2}, pages = {435 -- 448}, year = {2018}, abstract = {Digitalisierung bezeichnet die Nutzung großer Datenmengen, die zu einer umfassenden Vernetzung aller Bereiche der Wirtschaft und Gesellschaft f{\"u}hren wird (BMWi, 2015 und {\"a}hnlich K{\"o}hler/Wollschl{\"a}ger, 2014: 79). Sie umfasst die Erhebung von analogen Informationen („Big Data" in einem engen Sinne; z.B. O´Leary, 2013), ihre Speicherung in einem digitaltechnischen System (lokale Speicherung oder „Cloud Computing" durch die Weiterentwickelung des Internets; z.B. Hashem et al., 2015: 101), die Analyse und Interpretation sowie den Transfer in andere Systeme („Internet der Dinge" bzw. „Internet of Things"; z.B. Ashton, 2009).}, language = {de} } @article{PichlerGeorgeSeileretal.2009, author = {Pichler, A. and George, A. and Seiler, F. and Srulijes, J. and Havermann, Marc}, title = {Doppler Picture Velocimetry (DPV) applied to hypersonics}, series = {Shock Waves [Elektronische Ressource] : 26th International Symposium on Shock Waves, Volume 1 / edited by Klaus Hannemann, Friedrich Seiler}, journal = {Shock Waves [Elektronische Ressource] : 26th International Symposium on Shock Waves, Volume 1 / edited by Klaus Hannemann, Friedrich Seiler}, publisher = {Springer}, address = {Berlin}, isbn = {978-3-540-85168-4}, pages = {503 -- 508}, year = {2009}, language = {en} } @inproceedings{PflugWahle1994, author = {Pflug, J. and Wahle, Michael}, title = {Auslegung der CFK-Sandwich-Rumpfstruktur eines Hubschraubers mit der Methode der Finiten Elemente}, series = {Basistechnologien f{\"u}r neue Herausforderungen in der Luft- und Raumfahrt : DGLR-Jahrestagung / Deutscher Luft- und Raumfahrt-Kongress 1994, Erlangen, 04.- 07. Oktober 1994. - (Jahrbuch der Deutschen Gesellschaft f{\"u}r Luft- und Raumfahrt ; 1994,3)}, booktitle = {Basistechnologien f{\"u}r neue Herausforderungen in der Luft- und Raumfahrt : DGLR-Jahrestagung / Deutscher Luft- und Raumfahrt-Kongress 1994, Erlangen, 04.- 07. Oktober 1994. - (Jahrbuch der Deutschen Gesellschaft f{\"u}r Luft- und Raumfahrt ; 1994,3)}, editor = {B{\"u}rger, Gudrun}, publisher = {DGLR}, address = {Bonn}, pages = {1135 -- 1144}, year = {1994}, language = {de} } @article{PetersonRoethUibel2017, author = {Peterson, Leif Arne and R{\"o}th, Thilo and Uibel, Thomas}, title = {Einsatz von Holzwerkstoffen in Fahrzeugstrukturen}, series = {Bauen mit Holz}, journal = {Bauen mit Holz}, number = {3}, publisher = {Bruderverlag}, address = {K{\"o}ln}, issn = {0005-6545}, pages = {32 -- 38}, year = {2017}, language = {de} } @inproceedings{PetersonRoethUibel2017, author = {Peterson, Leif Arne and R{\"o}th, Thilo and Uibel, Thomas}, title = {Holzwerkstoffe in Karosseriestrukturen}, series = {Tagungsband Aachener Holzbautagung 2017}, booktitle = {Tagungsband Aachener Holzbautagung 2017}, editor = {Uibel, Thormas and Peterson, Leif Arne and Baumann, Marcus}, issn = {2197-4489}, pages = {34 -- 45}, year = {2017}, language = {de} } @article{PeloniDachwaldCeriotti2017, author = {Peloni, Alessandro and Dachwald, Bernd and Ceriotti, Matteo}, title = {Multiple near-earth asteroid rendezvous mission: Solar-sailing options}, series = {Advances in Space Research}, journal = {Advances in Space Research}, number = {In Press, Corrected Proof}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0273-1177}, doi = {10.1016/j.asr.2017.10.017}, year = {2017}, language = {en} } @inproceedings{PeloniDachwaldCeriotti2017, author = {Peloni, Alessandro and Dachwald, Bernd and Ceriotti, Matteo}, title = {Multiple NEA rendezvous mission: Solar sailing options}, series = {Fourth International Symposium on Solar Sailing}, booktitle = {Fourth International Symposium on Solar Sailing}, pages = {1 -- 11}, year = {2017}, abstract = {The scientific interest in near-Earth asteroids (NEAs) and the classification of some of those as potentially hazardous asteroid for the Earth stipulated the interest in NEA exploration. Close-up observations of these objects will increase drastically our knowledge about the overall NEA population. For this reason, a multiple NEA rendezvous mission through solar sailing is investigated, taking advantage of the propellantless nature of this groundbreaking propulsion technology. Considering a spacecraft based on the DLR/ESA Gossamer technology, this work focuses on the search of possible sequences of NEA encounters. The effectiveness of this approach is demonstrated through a number of fully-optimized trajectories. The results show that it is possible to visit five NEAs within 10 years with near-term solar-sail technology. Moreover, a study on a reduced NEA database demonstrates the reliability of the approach used, showing that 58\% of the sequences found with an approximated trajectory model can be converted into real solar-sail trajectories. Lastly, this second study shows the effectiveness of the proposed automatic optimization algorithm, which is able to find solutions for a large number of mission scenarios without any input required from the user.}, language = {en} } @inproceedings{PeloniCeriottiDachwald2015, author = {Peloni, Alessandro and Ceriotti, Matteo and Dachwald, Bernd}, title = {Solar-Sailing Trajectory Design for Close-up NEA Observations Mission}, series = {4th IAA Planetary Defense Conference - PDC 2015, 13-17 April 2015, Frascati, Roma, Italy}, booktitle = {4th IAA Planetary Defense Conference - PDC 2015, 13-17 April 2015, Frascati, Roma, Italy}, pages = {21 S.}, year = {2015}, language = {de} } @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} } @inproceedings{PeloniCeriottiDachwald2015, author = {Peloni, A. and Ceriotti, M. and Dachwald, Bernd}, title = {Preliminary trajectory design of a multiple NEO rendezvous mission through solar sailing}, series = {Proceedings of the International Astronautical Congress, IAC, Vol. 8, 2014}, booktitle = {Proceedings of the International Astronautical Congress, IAC, Vol. 8, 2014}, publisher = {Curran}, address = {Red Hook, NY}, isbn = {978-1-63439-986-9}, pages = {5352 -- 5366}, year = {2015}, language = {en} } @inproceedings{PeekenTroederSchmidtetal.1985, author = {Peeken, Heinz and Troeder, Christoph and Schmidt, J. and Rosenkranz, Josef}, title = {Principles of machine noise reduction}, series = {Inter-noise 85 : proceedings ; 1985 international conference on noise control engineering ; Munich, Sept. 18 - 20, 1985. - (Schriftenreihe der Bundesanstalt f{\"u}r Arbeitsschutz : Tagungsbericht ; 39)}, booktitle = {Inter-noise 85 : proceedings ; 1985 international conference on noise control engineering ; Munich, Sept. 18 - 20, 1985. - (Schriftenreihe der Bundesanstalt f{\"u}r Arbeitsschutz : Tagungsbericht ; 39)}, publisher = {Bundesanstalt f{\"u}r Arbeitsschutz [u.a.]}, address = {Dortmund [u.a.]}, isbn = {3-88314-417-7}, pages = {23 -- 36}, year = {1985}, language = {en} } @article{PeekenRosenkranzSchelenz1991, author = {Peeken, Heinz and Rosenkranz, Josef and Schelenz, R.}, title = {Ber{\"u}cksichtigung des Einflusses der Gleitlagergeh{\"a}usesteifigkeit auf das dynamische Verhalten von Rotoren}, series = {Antriebstechnik : Organ der Forschungsvereinigung Antriebstechnik e.V.}, volume = {30}, journal = {Antriebstechnik : Organ der Forschungsvereinigung Antriebstechnik e.V.}, number = {9}, issn = {0341-2652}, pages = {71 -- 75}, year = {1991}, language = {de} } @inproceedings{PaslighFunkeRoethetal.2010, author = {Pasligh, N. and Funke, D. and R{\"o}th, Thilo and Krack, R.}, title = {Leichtbau Quertrager als Stahlblech-Aluminiumdruckguss-Hybrid - Von der numerischen Berechnung bis zum realen Prototypen}, series = {VDI BERICHTE}, booktitle = {VDI BERICHTE}, publisher = {VDI Verlag}, address = {D{\"u}sseldorf}, isbn = {978-3-18-092107-5}, pages = {688 Seiten}, year = {2010}, language = {de} } @article{OverduinBlomeHoell2007, author = {Overduin, James and Blome, Hans-Joachim and Hoell, Josef}, title = {Wolfgang Priester: from the big bounce to the Lambda-dominated universe}, series = {Naturwissenschaften}, volume = {94}, journal = {Naturwissenschaften}, number = {6}, isbn = {0028-1042}, pages = {417 -- 429}, year = {2007}, language = {en} } @article{OttenWeberArent2018, author = {Otten, Dennis and Weber, Tobias and Arent, Jan-Christoph}, title = {Manufacturing Process Simulation - On Its Way to Industrial Application}, series = {International Journal of Aviation, Aeronautics, and Aerospace}, volume = {5}, journal = {International Journal of Aviation, Aeronautics, and Aerospace}, number = {2}, publisher = {Embry-Riddle Aeronautical University}, address = {Daytona Beach, Fla.}, issn = {2374-6793}, doi = {10.15394/ijaaa.2018.1217}, year = {2018}, abstract = {Manufacturing process simulation (MPS) has become more and more important for aviation and the automobile industry. A highly competitive market requires the use of high performance metals and composite materials in combination with reduced manufacturing cost and time as well as a minimization of the time to market for a new product. However, the use of such materials is expensive and requires sophisticated manufacturing processes. An experience based process and tooling design followed by a lengthy trial-and-error optimization is just not contemporary anymore. Instead, a tooling design process aided by simulation is used more often. This paper provides an overview of the capabilities of MPS in the fields of sheet metal forming and prepreg autoclave manufacturing of composite parts summarizing the resulting benefits for tooling design and manufacturing engineering. The simulation technology is explained briefly in order to show several simplification and optimization techniques for developing industrialized simulation approaches. Small case studies provide examples of an efficient application on an industrial scale.}, language = {en} } @inproceedings{OttenSchmidtWeber2016, author = {Otten, D. and Schmidt, M. and Weber, Tobias}, title = {Advances in Determination of Material Parameters for Functional Simulations Based on Process Simulations}, series = {SAMPE Europe Conference 16 Liege}, booktitle = {SAMPE Europe Conference 16 Liege}, isbn = {978-1-5108-3800-0}, pages = {570 -- 577}, year = {2016}, language = {en} } @inproceedings{OttenSchmidWeber2015, author = {Otten, D. and Schmid, M. and Weber, Tobias}, title = {Advances In Sheet Metal-Forming: Reduction Of Tooling Cost By Methodical Optimization}, series = {Proceedings of SAMPE Europe Conference, Amiens , France}, booktitle = {Proceedings of SAMPE Europe Conference, Amiens , France}, year = {2015}, language = {en} } @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} } @inproceedings{OlaruKowalskiSethietal.2011, author = {Olaru, Alexandra Maria and Kowalski, Julia and Sethi, Vaishali and Bl{\"u}mich, Bernhard}, title = {Fluid Transport in Porous Media probed by Relaxation-Exchange NMR}, series = {2011 Fall Meeting, AGU, San Francisco, Calif., 5-9 Dec.}, booktitle = {2011 Fall Meeting, AGU, San Francisco, Calif., 5-9 Dec.}, year = {2011}, language = {en} } @inproceedings{OhndorfDachwaldSeboldtetal.2011, author = {Ohndorf, Andreas and Dachwald, Bernd and Seboldt, Wolfgang and Schartner, Karl-Heinz}, title = {Flight times to the heliopause using a combination of solar and radioisotope electric propulsion}, series = {32nd International Electric Propulsion Conference}, booktitle = {32nd International Electric Propulsion Conference}, pages = {1 -- 12}, year = {2011}, abstract = {We investigate the interplanetary flight of a low-thrust space probe to the heliopause,located at a distance of about 200 AU from the Sun. Our goal was to reach this distance within the 25 years postulated by ESA for such a mission (which is less ambitious than the 15-year goal set by NASA). Contrary to solar sail concepts and combinations of allistic and electrically propelled flight legs, we have investigated whether the set flight time limit could also be kept with a combination of solar-electric propulsion and a second, RTG-powered upper stage. The used ion engine type was the RIT-22 for the first stage and the RIT-10 for the second stage. Trajectory optimization was carried out with the low-thrust optimization program InTrance, which implements the method of Evolutionary Neurocontrol,using Artificial Neural Networks for spacecraft steering and Evolutionary Algorithms to optimize the Neural Networks' parameter set. Based on a parameter space study, in which the number of thrust units, the unit's specific impulse, and the relative size of the solar power generator were varied, we have chosen one configuration as reference. The transfer time of this reference configuration was 29.6 years and the fastest one, which is technically more challenging, still required 28.3 years. As all flight times of this parameter study were longer than 25 years, we further shortened the transfer time by applying a launcher-provided hyperbolic excess energy up to 49 km2/s2. The resulting minimal flight time for the reference configuration was then 27.8 years. The following, more precise optimization to a launch with the European Ariane 5 ECA rocket reduced the transfer time to 27.5 years. This is the fastest mission design of our study that is flexible enough to allow a launch every year. The inclusion of a fly-by at Jupiter finally resulted in a flight time of 23.8 years,which is below the set transfer-time limit. However, compared to the 27.5-year transfer,this mission design has a significantly reduced launch window and mission flexibility if the escape direction is restricted to the heliosphere's "nose".}, language = {en} } @inproceedings{NowackRoethBuehrigPolaczeketal.2008, author = {Nowack, N. and R{\"o}th, Thilo and B{\"u}hrig-Polaczek, A. and Klaus, G.}, title = {Advanced Sheet Metal Components Reinforced by Light Metal Cast Structures}, series = {Aluminium alloys : their physical and mechanical properties ; [proceedings of the 11th International Conference on Aluminium Alloys, 22 - 26 Sept. 2008, Aachen, Germany ; ICAA 11]}, booktitle = {Aluminium alloys : their physical and mechanical properties ; [proceedings of the 11th International Conference on Aluminium Alloys, 22 - 26 Sept. 2008, Aachen, Germany ; ICAA 11]}, number = {2}, editor = {Hirsch, J{\"u}rgen}, isbn = {978-3-527-32367-8}, pages = {2374 -- 2381}, year = {2008}, language = {en} } @misc{NonhoffWahle1990, author = {Nonhoff, Gottfried and Wahle, Michael}, title = {Anordnung zur D{\"a}mpfung von Schwingungen an Bauwerken und Bauteilen : Offenlegungsschrift / Europ{\"a}ische Patentschrift}, publisher = {Deutsches Patent- und Markenamt / Europ{\"a}isches Patentamt}, address = {M{\"u}nchen / Den Hague}, pages = {7 S. : graph. Darst.}, year = {1990}, language = {de} } @inproceedings{NiedermeierClemensKowalskietal.2014, author = {Niedermeier, H. and Clemens, J. and Kowalski, Julia and Macht, S. and Heinen, D. and Hoffmann, R. and Linder, Peter}, title = {Navigation system for a research ice probe for antarctic glaciers}, series = {IEEE/ION Position, Location and Navigation Symposium (PLANS) ; 5-8 May 2014, Monterey, Calif.}, booktitle = {IEEE/ION Position, Location and Navigation Symposium (PLANS) ; 5-8 May 2014, Monterey, Calif.}, publisher = {IEEE}, address = {Piscataway, NJ}, organization = {Position, Location and Navigation Symposium <2014, Monterey, Calif.>}, isbn = {978-1-4799-3319-8}, pages = {959 -- 975}, year = {2014}, language = {en} } @inproceedings{NeuJanserKhatibietal.2015, author = {Neu, Eugen and Janser, Frank and Khatibi, Akbar A. and Orifici, Adrian C.}, title = {Operational modal analysis of a cantilever in a wind tunnel using optical fiber bragg grating sensors}, series = {6th International Operational Modal Analysis Conference. IOMAC´15. 2015 May 12-14 Gijon - Spain}, booktitle = {6th International Operational Modal Analysis Conference. IOMAC´15. 2015 May 12-14 Gijon - Spain}, doi = {10.13140/RG.2.1.3753.0324}, pages = {10 S.}, year = {2015}, language = {en} } @inproceedings{NeuJanserKhatibietal.2016, author = {Neu, Eugen and Janser, Frank and Khatibi, Akbar A. and Orifici, Adrian C.}, title = {In-flight vibration-based structural health monitoring of aircraft wings}, series = {30th Congress of the internatonal council of the aeronautical sciences : 25.-30. September 2016, Daejeon, Korea}, booktitle = {30th Congress of the internatonal council of the aeronautical sciences : 25.-30. September 2016, Daejeon, Korea}, pages = {10 Seiten}, year = {2016}, abstract = {This work presents a methodology for automated damage-sensitive feature extraction and anomaly detection under multivariate operational variability for in-flight assessment of wings. The method uses a passive excitation approach, i. e. without the need for artificial actuation. The modal system properties (natural frequencies and damping ratios) are used as damage-sensitive features. Special emphasis is placed on the use of Fiber Bragg Grating (FBG) sensing technology and the consideration of Operational and Environmental Variability (OEV). Measurements from a wind tunnel investigation with a composite cantilever equipped with FBG and piezoelectric sensors are used to successfully detect an impact damage. In addition, the feasibility of damage localisation and severity estimation is evaluated based on the coupling found between damageand OEV-induced feature changes.}, language = {en} } @article{NeuJanserKhatibietal.2017, author = {Neu, Eugen and Janser, Frank and Khatibi, Akbar A. and Orifici, Adrian C.}, title = {Fully Automated Operational Modal Analysis using multi-stage clustering}, series = {Mechanical Systems and Signal Processing}, volume = {Vol. 84, Part A}, journal = {Mechanical Systems and Signal Processing}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0888-3270}, doi = {10.1016/j.ymssp.2016.07.031}, pages = {308 -- 323}, year = {2017}, language = {en} } @article{NeuJanserKhatibietal.2016, author = {Neu, Eugen and Janser, Frank and Khatibi, Akbar A. and Orifici, Adrian C.}, title = {Automated modal parameter-based anomaly detection under varying wind excitation}, series = {Structural Health Monitoring}, volume = {15}, journal = {Structural Health Monitoring}, number = {6}, publisher = {Sage}, address = {London}, issn = {1475-9217}, doi = {10.1177/1475921716665803}, pages = {1 -- 20}, year = {2016}, abstract = {Wind-induced operational variability is one of the major challenges for structural health monitoring of slender engineering structures like aircraft wings or wind turbine blades. Damage sensitive features often show an even bigger sensitivity to operational variability. In this study a composite cantilever was subjected to multiple mass configurations, velocities and angles of attack in a controlled wind tunnel environment. A small-scale impact damage was introduced to the specimen and the structural response measurements were repeated. The proposed damage detection methodology is based on automated operational modal analysis. A novel baseline preparation procedure is described that reduces the amount of user interaction to the provision of a single consistency threshold. The procedure starts with an indeterminate number of operational modal analysis identifications from a large number of datasets and returns a complete baseline matrix of natural frequencies and damping ratios that is suitable for subsequent anomaly detection. Mahalanobis distance-based anomaly detection is then applied to successfully detect the damage under varying severities of operational variability and with various degrees of knowledge about the present operational conditions. The damage detection capabilities of the proposed methodology were found to be excellent under varying velocities and angles of attack. Damage detection was less successful under joint mass and wind variability but could be significantly improved through the provision of the currently encountered operational conditions.}, language = {en} } @article{NeuJanserKhatibietal.2016, author = {Neu, Eugen and Janser, Frank and Khatibi, Akbar A. and Braun, Carsten and Orifici, Adrian C.}, title = {Operational Modal Analysis of a wing excited by transonic flow}, series = {Aerospace Science and Technology}, volume = {49}, journal = {Aerospace Science and Technology}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1270-9638}, doi = {10.1016/j.ast.2015.11.032}, pages = {73 -- 79}, year = {2016}, abstract = {Operational Modal Analysis (OMA) is a promising candidate for flutter testing and Structural Health Monitoring (SHM) of aircraft wings that are passively excited by wind loads. However, no studies have been published where OMA is tested in transonic flows, which is the dominant condition for large civil aircraft and is characterized by complex and unique aerodynamic phenomena. We use data from the HIRENASD large-scale wind tunnel experiment to automatically extract modal parameters from an ambiently excited wing operated in the transonic regime using two OMA methods: Stochastic Subspace Identification (SSI) and Frequency Domain Decomposition (FDD). The system response is evaluated based on accelerometer measurements. The excitation is investigated from surface pressure measurements. The forcing function is shown to be non-white, non-stationary and contaminated by narrow-banded transonic disturbances. All these properties violate fundamental OMA assumptions about the forcing function. Despite this, all physical modes in the investigated frequency range were successfully identified, and in addition transonic pressure waves were identified as physical modes as well. The SSI method showed superior identification capabilities for the investigated case. The investigation shows that complex transonic flows can interfere with OMA. This can make existing approaches for modal tracking unsuitable for their application to aircraft wings operated in the transonic flight regime. Approaches to separate the true physical modes from the transonic disturbances are discussed.}, language = {en} } @inproceedings{MoehrenBergmannJanseretal.2023, author = {M{\"o}hren, Felix and Bergmann, Ole and Janser, Frank and Braun, Carsten}, title = {On the determination of harmonic propeller loads}, series = {AIAA SCITECH 2023 Forum}, booktitle = {AIAA SCITECH 2023 Forum}, publisher = {AIAA}, doi = {10.2514/6.2023-2404}, pages = {12 Seiten}, year = {2023}, abstract = {Dynamic loads significantly impact the structural design of propeller blades due to fatigue and static strength. Since propellers are elastic structures, deformations and aerodynamic loads are coupled. In the past, propeller manufacturers established procedures to determine unsteady aerodynamic loads and the structural response with analytical steady-state calculations. According to the approach, aeroelastic coupling primarily consists of torsional deformations. They neglect bending deformations, deformation velocities, and inertia terms. This paper validates the assumptions above for a General Aviation propeller and a lift propeller for urban air mobility or large cargo drones. Fully coupled reduced-order simulations determine the dynamic loads in the time domain. A quasi-steady blade element momentum approach transfers loads to one-dimensional finite beam elements. The simulation results are in relatively good agreement with the analytical method for the General Aviation propeller but show increasing errors for the slender lift propeller. The analytical approach is modified to consider the induced velocities. Still, inertia and velocity proportional terms play a significant role for the lift propeller due to increased elasticity. The assumption that only torsional deformations significantly impact the dynamic loads of propellers is not valid. Adequate determination of dynamic loads of such designs requires coupled aeroelastic simulations or advanced analytical procedures.}, language = {en} } @inproceedings{MulsowHuelsenGuetzlaffetal.2023, author = {Mulsow, Niklas A. and H{\"u}lsen, Benjamin and G{\"u}tzlaff, Joel and Spies, Leon and Bresser, Andreas and Dabrowski, Adam and Czupalla, Markus and Kirchner, Frank}, title = {Concept and design of an autonomous micro rover for long term lunar exploration}, series = {Proceedings of the 74th International Astronautical Congress}, booktitle = {Proceedings of the 74th International Astronautical Congress}, publisher = {dfki}, address = {Saarbr{\"u}cken}, pages = {13 Seiten}, year = {2023}, abstract = {Research on robotic lunar exploration has seen a broad revival, especially since the Google Lunar X-Prize increasingly brought private endeavors into play. This development is supported by national agencies with the aim of enabling long-term lunar infrastructure for in-situ operations and the establishment of a moon village. One challenge for effective exploration missions is developing a compact and lightweight robotic rover to reduce launch costs and open the possibility for secondary payload options. Existing micro rovers for exploration missions are clearly limited by their design for one day of sunlight and their low level of autonomy. For expanding the potential mission applications and range of use, an extension of lifetime could be reached by surviving the lunar night and providing a higher level of autonomy. To address this objective, the paper presents a system design concept for a lightweight micro rover with long-term mission duration capabilities, derived from a multi-day lunar mission scenario at equatorial regions. Technical solution approaches are described, analyzed, and evaluated, with emphasis put on the harmonization of hardware selection due to a strictly limited budget in dimensions and power.}, language = {en} } @article{MeyerGranrathFeyerletal.2021, author = {Meyer, Max-Arno and Granrath, Christian and Feyerl, G{\"u}nter and Richenhagen, Johannes and Kaths, Jakob and Andert, Jakob}, title = {Closed-loop platoon simulation with cooperative intelligent transportation systems based on vehicle-to-X communication}, series = {Simulation Modelling Practice and Theory}, volume = {106}, journal = {Simulation Modelling Practice and Theory}, number = {Art. 102173}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1569-190X}, doi = {10.1016/j.simpat.2020.102173}, year = {2021}, language = {en} } @book{MertensVeldenKelmetal.2000, author = {Mertens, Josef and Velden, Alexander van der and Kelm, Roland and Kokan, David}, title = {Application of MDO to large subsonic transport aircraft}, publisher = {American Institute of Aeronautics and Astronautics}, address = {Reston, Va.}, pages = {12 S. : zahlr. Ill. u. graph. Darst.}, year = {2000}, language = {en} } @misc{MertensVeldenKelm2006, author = {Mertens, Josef and Velden, Alexander van der and Kelm, Roland}, title = {Flugzeug mit Fl{\"u}geln, deren maximaler Auftrieb durch steuerbare Fl{\"u}gelkomponenten ver{\"a}nderbar ist : Offenlegungsschrift DE102004045732 ; Offenlegungstag: 30.03.2006 = Aircraft with wings whose maximum lift can be altered by controllable wing components}, publisher = {Deutsches Patent- und Markenamt}, address = {M{\"u}nchen}, pages = {6 S. : Ill.}, year = {2006}, language = {de} } @article{MertensRoeger2000, author = {Mertens, Josef and R{\"o}ger, Wolf}, title = {F-Schlepp: Problem Taumelschwingung}, series = {Aerokurier. 44 (2000), H. 10}, journal = {Aerokurier. 44 (2000), H. 10}, isbn = {0341-1281}, pages = {73 -- 73}, year = {2000}, language = {de} } @misc{MertensLajain2002, author = {Mertens, Josef and Lajain, Henri}, title = {Method of fabricating leading edge nose structures of aerodynamic surfaces : patent no.: US 6,415,510 B2 ; date of patent: Jul. 9, 2002}, publisher = {United States Patent and Trademark Office}, address = {[Washington, DC]}, pages = {12 S. : Ill.}, year = {2002}, language = {en} } @article{MertensKlevenhusenJakob1987, author = {Mertens, Josef and Klevenhusen, K. D. and Jakob, H.}, title = {Accurate Transonic Wave Drag Prediction Using Simple Physical Models}, series = {AIAA-Journal. 25 (1987), H. 6}, journal = {AIAA-Journal. 25 (1987), H. 6}, isbn = {0001-1452}, pages = {799 -- 805}, year = {1987}, language = {en} } @article{MertensKelmVelden1999, author = {Mertens, Josef and Kelm, R. and Velden, A. van der}, title = {Interdisziplin{\"a}re Auslegung eines Verkehrsflugzeugfl{\"u}gels}, series = {DGLR-Jahrbuch 1999 Bd. 3}, journal = {DGLR-Jahrbuch 1999 Bd. 3}, pages = {1605 -- 1610}, year = {1999}, language = {de} } @article{MertensHuenecke1988, author = {Mertens, Josef and H{\"u}necke, Klaus}, title = {Experimentelle Untersuchung zur Landeeigenschaft von Hyperschall-Flugger{\"a}ten / H{\"u}necke, Klaus ; Mertens, Josef}, series = {DGLR-Jahrbuch 1988 Bd. 1}, journal = {DGLR-Jahrbuch 1988 Bd. 1}, pages = {706}, year = {1988}, language = {de} } @article{MertensHenke2001, author = {Mertens, Josef and Henke, Rolf}, title = {Adaptive technologies for future civil air transport}, series = {Air \& Space Europe. 3 (2001), H. 3-4}, journal = {Air \& Space Europe. 3 (2001), H. 3-4}, isbn = {1247-5793}, pages = {80 -- 82}, year = {2001}, language = {en} } @incollection{MertensBecker1989, author = {Mertens, Josef and Becker, K.}, title = {Numerical solution of flow equations : an aircraft designer's view}, series = {Nonlinear hyperbolic equations - theory, computation methods, and applications : proceedings of the 2nd International Conference on Nonlinear Hyperbolic Problems, Aachen, FRG, March 14 to 18, 1988. - (Notes on Numerical Fluid Mechanics ; 24)}, booktitle = {Nonlinear hyperbolic equations - theory, computation methods, and applications : proceedings of the 2nd International Conference on Nonlinear Hyperbolic Problems, Aachen, FRG, March 14 to 18, 1988. - (Notes on Numerical Fluid Mechanics ; 24)}, editor = {Ballmann, Josef}, publisher = {Vieweg}, address = {Braunschweig}, isbn = {3-528-08098-1}, doi = {10.1007/978-3-322-87869-4_41}, pages = {403 -- 412}, year = {1989}, abstract = {Today the most accurate and cost effective industrial codes used in aircraft design are based on the full potential equation coupled with boundary layer equations. However, these are not capable to solve complicated three-dimensional problems of vortical flows and shocks. On the other hand Euler and Navier-Stokes codes are too expensive and not accurate enough for design purposes, especially in regard of drag and interference prediction. The reasons for these deficiencies are investigated and a way to overcome them by future developments is demonstrated.}, language = {en} } @incollection{Mertens1997, author = {Mertens, Josef}, title = {Required aerodynamic technologies}, series = {New design concepts for high speed air transport. - (Courses and lectures / International Centre for Mechanical Sciences ; 366)}, booktitle = {New design concepts for high speed air transport. - (Courses and lectures / International Centre for Mechanical Sciences ; 366)}, editor = {Sobieczky, H.}, publisher = {Springer}, address = {Wien [u.a.]}, isbn = {3-2118-2815-X}, doi = {10.1007/978-3-7091-2658-5_5}, pages = {69 -- 96}, year = {1997}, abstract = {In the preceeding chapters on "Son of Concorde, a Technology Challenge" and "Aerodynamic Multipoint Design Challenge" it was explained, that a well balanced contribution of new technologies in all major disciplines is required for realisation of a new Supersonic Commercial Transport (SCT). One of these technologies - usually one of the most important for aircraft-is aerodynamics. Here, the required "pure" aerodynamic technologies are specified in more detail, according to our present knowledge. Increasing insight into the problems may change the balance of importance of the individual technologies and may require some more contributions. We must never confine our knowledge to the knowledge base of an expert at a given time, but must stay open for new insights.}, language = {en} } @incollection{Mertens1997, author = {Mertens, Josef}, title = {Certification of supersonic civil transports}, series = {New design concepts for high speed air transport. - (Courses and lectures / International Centre for Mechanical Sciences ; 366)}, booktitle = {New design concepts for high speed air transport. - (Courses and lectures / International Centre for Mechanical Sciences ; 366)}, editor = {Sobieczky, H.}, publisher = {Springer}, address = {Wien [u.a.]}, isbn = {3-2118-2815-X}, doi = {10.1007/978-3-7091-2658-5_6}, pages = {97 -- 103}, year = {1997}, abstract = {Since certification of Concorde new certification standards were introduced including many new regulations to improve flight safety. Most of these standards are to prevent severe accidents in the future which happened in the past (here: after Concorde's certification). A new SCT has to fulfill these standards, although Concorde had none of these accidents. But accidents - although they sometimes occurred only for a specific aircraft type - have to be avoided for any (new) aircraft. Because of existing aircraft without typical accident types having demonstrated their reliability, they are allowed to go on based on their old certification; although sometimes new rules prevent accident types which are not connected to specific aircraft types - like e.g. evacuation rules. Anyway, Concorde is allowed to fly based on its old certification, and hopefully in the future will fly as safely as in the past. But a new SCT has to fulfill updated rules like any other aircraft, and it has to be "just another aircraft" [75].}, language = {en} } @incollection{Mertens1997, author = {Mertens, Josef}, title = {Supersonic laminar flow}, series = {New design concepts for high speed air transport. - (Courses and lectures / International Centre for Mechanical Sciences ; 366)}, booktitle = {New design concepts for high speed air transport. - (Courses and lectures / International Centre for Mechanical Sciences ; 366)}, editor = {Sobieczky, H.}, publisher = {Springer}, address = {Wien [u.a.]}, isbn = {3-2118-2815-X}, doi = {10.1007/978-3-7091-2658-5_18}, pages = {275 -- 290}, year = {1997}, abstract = {Supersonic transports are very drag sensitive. Technology to reduce drag by application of laminar flow, therefore, will be important; it is a prerequisite to achieve very long range capability. In earlier studies it was assumed that SCTs would only become possible by application of laminar flow [376]. But today, we request an SCT to be viable without application of laminar flow in order to maintain its competitiveness when laminar flow becomes available for subsonic and supersonic transports. By reducing fuel burned, laminar flow drag reduction reduces size and weight of the aircraft, or increases range capability -whereas otherwise size and weight would grow towards infinity. Transition mechanisms from laminar to turbulent state of the boundary layer flow (ALT, CFI, TSI) function as for transonic transports, but at more severe conditions: higher sweep angles, cooled surfaces; higher mode instabilities (HMI) must at least be taken into account, although they may not become important below Mach 3. Hitherto there is a worldwide lack of ground test facilities to investigate TSI at the expected cruise Mach numbers between 1.6 and 2.4; in Stuttgart, Germany one such facility -a Ludwieg tube- is still in the validation phase. A quiet Ludwieg tunnel could be a favourable choice for Europe. But it will require a new approach in designing aircraft which includes improved theoretical predictions, usage of classical wind tunnels for turbulent flow and flight tests for validation.}, language = {en} } @article{Mertens1985, author = {Mertens, Josef}, title = {Charakteristiken des Staub-Gas-Gemisches}, series = {Zeitschrift f{\"u}r angewandte Mathematik und Mechanik : ZAMM. 65 (1985), H. 4}, journal = {Zeitschrift f{\"u}r angewandte Mathematik und Mechanik : ZAMM. 65 (1985), H. 4}, isbn = {1521-4001}, pages = {T211 -- T213}, year = {1985}, language = {de} } @incollection{Mertens1997, author = {Mertens, Josef}, title = {Son of Concorde, a technology challenge}, series = {New design concepts for high speed air transport. - (Courses and lectures / International Centre for Mechanical Sciences ; 366)}, booktitle = {New design concepts for high speed air transport. - (Courses and lectures / International Centre for Mechanical Sciences ; 366)}, editor = {Sobieczky, H.}, publisher = {Springer}, address = {Wien [u.a.]}, isbn = {3-2118-2815-X}, doi = {10.1007/978-3-7091-2658-5_3}, pages = {31 -- 51}, year = {1997}, abstract = {Concorde (Figure 9) is the only supersonic airliner which has been introduced into regular passenger service. It is still in service at British Airways and Air France without any flight accidents, and probably will stay in service for at least for ten more years.}, language = {en} } @incollection{Mertens1997, author = {Mertens, Josef}, title = {Aerodynamic multi point design challenge}, series = {New design concepts for high speed air transport.- (Courses and lectures / International Centre for Mechanical Sciences ; 366)}, booktitle = {New design concepts for high speed air transport.- (Courses and lectures / International Centre for Mechanical Sciences ; 366)}, editor = {Sobieczky, H.}, publisher = {Springer}, address = {Wien [u.a.]}, isbn = {3-2118-2815-X}, doi = {10.1007/978-3-7091-2658-5_4}, pages = {53 -- 67}, year = {1997}, abstract = {In the chapter "Son of Concorde, a Technology Challenge" one of the new challenges for a Supersonic Commercial Transport (SCT) is multi-point design for the four main design points: - supersonic cruise - transonic cruise - take-off and landing - transonic acceleration.}, language = {en} } @book{Mertens1983, author = {Mertens, Josef}, title = {Instation{\"a}re Str{\"o}mungen von Gasen mit brennbaren Partikeln}, address = {Aachen}, pages = {III, 245 S. : graph. Darst.}, year = {1983}, language = {de} } @inproceedings{Mertens2001, author = {Mertens, Josef}, title = {Next steps envisaged to improve wing performance of commercial aircraft}, series = {Aerodynamic drag reduction technologies : proceedings of the CEAS/DragNet European Drag Reduction Conference, 19-21 June 2000, Potsdam, Germany. - (Notes on numerical fluid mechanics ; 76)}, booktitle = {Aerodynamic drag reduction technologies : proceedings of the CEAS/DragNet European Drag Reduction Conference, 19-21 June 2000, Potsdam, Germany. - (Notes on numerical fluid mechanics ; 76)}, publisher = {Springer}, address = {Berlin [u.a.]}, isbn = {3-540-41911-X (Print)}, doi = {10.1007/978-3-540-45359-8_26}, pages = {246 -- 255}, year = {2001}, language = {en} }