@misc{HilleStumpfMayntzetal.2023, author = {Hille, Sebastian and Stumpf, Eike and Mayntz, Joscha and Dahmann, Peter}, title = {Prediction of sound exposure caused by a landing motor glider with recuperating propellers}, series = {AIAA SCITECH 2023 Forum}, journal = {AIAA SCITECH 2023 Forum}, publisher = {AIAA}, address = {Reston, Va.}, doi = {10.2514/6.2023-0211}, year = {2023}, abstract = {This paper presents an approach to predicting the sound exposure on the ground caused by a landing aircraft with recuperating propellers. The noise source along the trajectory of a flight specified for a steeper approach is simulated based on measurements of sound power levels and additional parameters of a single propeller placed in a wind tunnel. To validate the measured data/measurement results, these simulations are also supported by overflight measurements of a test aircraft. It is shown that the simple source models of propellers do not provide fully satisfactory results since the sound levels are estimated too low. Nevertheless, with a further reference comparison, margins for an acceptable increase in the sound power level of the aircraft on its now steeper approach path could be estimated. Thus, in this case, a +7 dB increase in SWL would not increase the SEL compared to the conventional approach within only 2 km ahead of the airfield.}, language = {en} } @incollection{BraunBouckeHankeetal.2003, author = {Braun, Carsten and Boucke, Alexander and Hanke, M. and Karavas, Alexandros and Ballmann, Josef}, title = {Prediction of the model deformation of a high speed transport aircraft type wing by direct aeroelastic simulation}, series = {High performance computing in science and engineering '03. Transactions of the High Performance Computing Center Stuttgart (HLRS) 2003 / Eds.: Egon Krause ...}, booktitle = {High performance computing in science and engineering '03. Transactions of the High Performance Computing Center Stuttgart (HLRS) 2003 / Eds.: Egon Krause ...}, publisher = {Springer}, address = {Berlin}, isbn = {978-3-540-40850-5}, pages = {331 -- 342}, year = {2003}, language = {de} } @article{KezerashviliDachwald2021, author = {Kezerashvili, Roman Ya and Dachwald, Bernd}, title = {Preface: Solar sailing: Concepts, technology, and missions II}, series = {Advances in Space Research}, volume = {67}, journal = {Advances in Space Research}, number = {9}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0273-1177}, doi = {10.1016/j.asr.2021.01.037}, pages = {2559 -- 2560}, year = {2021}, language = {en} } @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{ThomaThomessenGardietal.2023, author = {Thoma, Andreas and Thomessen, Karolin and Gardi, Alessandro and Fisher, A. and Braun, Carsten}, title = {Prioritising paths: An improved cost function for local path planning for UAV in medical applications}, series = {The Aeronautical Journal}, journal = {The Aeronautical Journal}, number = {First View}, publisher = {Cambridge University Press}, address = {Cambridge}, issn = {0001-9240 (Print)}, doi = {10.1017/aer.2023.68}, pages = {1 -- 18}, year = {2023}, abstract = {Even the shortest flight through unknown, cluttered environments requires reliable local path planning algorithms to avoid unforeseen obstacles. The algorithm must evaluate alternative flight paths and identify the best path if an obstacle blocks its way. Commonly, weighted sums are used here. This work shows that weighted Chebyshev distances and factorial achievement scalarising functions are suitable alternatives to weighted sums if combined with the 3DVFH* local path planning algorithm. Both methods considerably reduce the failure probability of simulated flights in various environments. The standard 3DVFH* uses a weighted sum and has a failure probability of 50\% in the test environments. A factorial achievement scalarising function, which minimises the worst combination of two out of four objective functions, reaches a failure probability of 26\%; A weighted Chebyshev distance, which optimises the worst objective, has a failure probability of 30\%. These results show promise for further enhancements and to support broader applicability.}, language = {en} } @inproceedings{KnoblochKowalskiBoesigeretal.2011, author = {Knobloch, V. and Kowalski, Julia and B{\"o}siger, P. and Kozerke, S.}, title = {Probabilistic Streamline Estimation from Accelerated Fourier Velocity Encoded Measurements}, series = {Proceedings of the 19th ISMRM International Society for Magnetic Resonance in Medicine}, booktitle = {Proceedings of the 19th ISMRM International Society for Magnetic Resonance in Medicine}, pages = {1215 -- 1215}, year = {2011}, language = {de} } @incollection{HeimesKampkerDornetal.2023, author = {Heimes, Heiner Hans and Kampker, Achim and Dorn, Benjamin and Kehrer, Mario and D{\"u}nnwald, Simon and Badura, Dennis and Terren, Maximilian and R{\"o}th, Thilo}, title = {Produktionsprozesse der Fahrzeugstruktur}, series = {Elektromobilit{\"a}t: Grundlagen einer Fortschrittstechnologie}, booktitle = {Elektromobilit{\"a}t: Grundlagen einer Fortschrittstechnologie}, editor = {Kampker, Achim and Heimes, Heiner Hans}, publisher = {Springer Vieweg}, address = {Berlin}, isbn = {978-3-662-65811-6 (Print)}, doi = {10.1007/978-3-662-65812-3_13}, pages = {227 -- 247}, year = {2023}, language = {de} } @article{HavermannSeilerGeorgesetal.2008, author = {Havermann, Marc and Seiler, F. and Georges, A. and Srulijes, J.}, title = {Progress in Doppler picture velocimetry (DPV) / Seiler, F. ; George, A. ; Srulijes, J. ; Havermann, M.}, series = {Experiments in Fluids. 44 (2008), H. 3}, journal = {Experiments in Fluids. 44 (2008), H. 3}, publisher = {-}, isbn = {1432-1114}, pages = {389 -- 395}, year = {2008}, language = {en} } @book{HavermannSeilerGeorgeetal.2006, author = {Havermann, Marc and Seiler, F. and George, A. and Srulijes, J.}, title = {Progress in doppler picture velocimetry (DPV) technique : 12th International Symposium on Flow Visualization, DLR, G{\"o}ttingen, September 10 - 14, 2006 / Institut Franco-Allemand de Recherches de Saint-Louis. Seiler, F. ...}, publisher = {ISL}, address = {Saint-Louis}, pages = {10 S. : Ill., graph. Darst.}, year = {2006}, language = {en} }