TY  - JOUR
A1  - Bergmann, Ole
A1  - Möhren, Felix
A1  - Braun, Carsten
A1  - Janser, Frank
T1  - On the influence of elasticity on swept propeller noise
JF  - AIAA SCITECH 2023 Forum
N2  - High aerodynamic efficiency requires propellers with high aspect ratios, while propeller sweep potentially reduces noise. Propeller sweep and high aspect ratios increase elasticity and coupling of structural mechanics and aerodynamics, affecting the propeller performance and noise. Therefore, this paper analyzes the influence of elasticity on forward-swept, backward-swept, and unswept propellers in hover conditions. A reduced-order blade element momentum approach is coupled with a one-dimensional Timoshenko beam theory and Farassat's formulation 1A. The results of the aeroelastic simulation are used as input for the aeroacoustic calculation. The analysis shows that elasticity influences noise radiation because thickness and loading noise respond differently to deformations. In the case of the backward-swept propeller, the location of the maximum sound pressure level shifts forward by 0.5 °, while in the case of the forward-swept propeller, it shifts backward by 0.5 °. Therefore, aeroacoustic optimization requires the consideration of propeller deformation.
Y1  - 2023
U6  - https://doi.org/10.2514/6.2023-0210
N1  - Session: Propeller, Open Rotor, and Rotorcraft Noise II

AIAA SCITECH 2023 Forum, 23-27 January 2023, National Harbor, MD & Online
PB  - AIAA
CY  - Reston, Va.
ER  - 
TY  - JOUR
A1  - Helsper, Christoph
A1  - Nießner, R.
T1  - On the Influence of the Vapour Substance on the Behaviour of an Expansion Type Condensation Nucleus Counter
JF  - Journal of Aerosol Science. 16 (1985), H. 5
Y1  - 1985
SN  - 0021-8502
SP  - 457
EP  - 461
ER  - 
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A1  - Blome, Hans-Joachim
A1  - Chu, Y.
A1  - Hoell, J
A1  - Priester, W.
T1  - On the observational discrimination of Friedmann-Lemaître models
JF  - Large Scale Structures of the Universe: Proceedings of the 130th Symposium of the International Astronomical Union, dedicated to the memory of Marc A. Aaronson (1950-1987) held in Balatonfured, Hungary, June 15-20, 1987. Edited by Jean Audouze, Marie-Christine Pelletan and Sandor Szalay.
Y1  - 1988
SN  - 90-277-2742-2
N1  - International Astronomical Union. Symposium no. 130
SP  - 517
PB  - Kluwer Academic Publishers
CY  - Dordrecht
ER  - 
TY  - JOUR
A1  - Schneider, Felix
A1  - Tran, Duc Hung
T1  - On the relation between the fair value option and bid-ask spreads: descriptive evidence on the recognition of credit risk changes under IFRS
JF  - Journal of Business Economics
Y1  - 2018
U6  - https://doi.org/10.1007/s11573-015-0776-2
SN  - 1861-8928
VL  - 85
IS  - 9
SP  - 1049
EP  - 1081
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Yang, Peng-Fei
A1  - Kriechbaumer, Andreas
A1  - Albracht, Kirsten
A1  - Sanno, Maximilian
A1  - Ganse, Bergita
A1  - Koy, Timmo
A1  - Shang, Peng
A1  - Brüggemann, Gert-Peter
A1  - Müller, Lars Peter
A1  - Rittweger, Jörn
T1  - On the relationship between tibia torsional deformation and regional muscle contractions in habitual human exercises in vivo
JF  - Journal of Biomechanics
Y1  - 2015
U6  - https://doi.org/10.1016/j.jbiomech.2014.12.031
SN  - 0021-9290
VL  - 48
IS  - 3
SP  - 456
EP  - 464
PB  - Elsevier
CY  - Amsterdam
ER  - 
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A1  - Stulpe, Werner
T1  - On the Representation of Quantum Mechanics on a Classical Sample Space
JF  - International Journal of Theoretical Physics. 37 (1998), H. 1
Y1  - 1998
SN  - 1572-9575
SP  - 349
EP  - 356
ER  - 
TY  - JOUR
A1  - Stulpe, Werner
T1  - On the Representation of Quantum Mechanics on Phase Space
JF  - International Journal of Theoretical Physics. 31 (1992), H. 9
Y1  - 1992
SN  - 1572-9575
SP  - 1785
EP  - 1795
ER  - 
TY  - JOUR
A1  - Zatko, B.
A1  - Dubecký, F.
A1  - Bohacek, P.
A1  - Gombia, E.
A1  - Frigeri, P.
A1  - Mosca, R.
A1  - Franchi, S.
A1  - Huarn, J.
A1  - Nescas, V.
A1  - Sekacova, M.
A1  - Förster, Arnold
A1  - Kordos, P.
T1  - On the spectrometric performance limit of radiation detectors based on semi-insulating GaAs
JF  - Nuclear instruments and methods in physics research, Section A. 531 (2004), H. 1-2
Y1  - 2004
SN  - 0168-9002
SP  - 111
EP  - 120
ER  - 
TY  - JOUR
A1  - Reißel, Martin
A1  - Quell, P.
T1  - On the Vanishing Displacement Current Limit for Eddy-Current Problems / Quell, P. ; Reißel, M.
JF  - ZAMM - Zeitschrift für Angewandte Mathematik und Mechanik. 76 (1996), H. S2
Y1  - 1996
SN  - 0044-2267
N1  - ICIAM/GAMM 95 Applied Analysis
SP  - 649
EP  - 650
ER  - 
TY  - JOUR
A1  - Ferrein, Alexander
A1  - Steinbauer, Gerald
T1  - On the Way to High-Level Programming for Resource-Limited Embedded Systems with Golog
JF  - Simulation, Modeling, and Programming for Autonomous Robots
Y1  - 2010
N1  - Lecture Notes in Computer Science ; 6472 ; Second International Conference, SIMPAR 2010, Darmstadt, Germany, November 15-18, 2010. Proceedings
SP  - 229
EP  - 240
ER  -