TY  - JOUR
A1  - Peeken, Heinz
A1  - Rosenkranz, Josef
A1  - Schelenz, R.
T1  - Berücksichtigung des Einflusses der Gleitlagergehäusesteifigkeit auf das dynamische Verhalten von Rotoren
JF  - Antriebstechnik : Organ der Forschungsvereinigung Antriebstechnik e.V.
Y1  - 1991
SN  - 0341-2652
VL  - 30
IS  - 9
SP  - 71
EP  - 75
ER  - 
TY  - JOUR
A1  - Blome, Hans-Joachim
A1  - Priester, W.
T1  - Big Bounce in the very early Universe
JF  - Astronomy and Astrophysics. 250 (1991), H. 1
Y1  - 1991
SN  - 0004-6361
SP  - 43
EP  - 49
ER  - 
TY  - JOUR
A1  - Thomessen, Karolin
A1  - Thoma, Andreas
A1  - Braun, Carsten
T1  - Bio-inspired altitude changing extension to the 3DVFH* local obstacle avoidance algorithm
JF  - CEAS Aeronautical Journal
N2  - Obstacle avoidance is critical for unmanned aerial vehicles (UAVs) operating autonomously. Obstacle avoidance algorithms either rely on global environment data or local sensor data. Local path planners react to unforeseen objects and plan purely on local sensor information. Similarly, animals need to find feasible paths based on local information about their surroundings. Therefore, their behavior is a valuable source of inspiration for path planning. Bumblebees tend to fly vertically over far-away obstacles and horizontally around close ones, implying two zones for different flight strategies depending on the distance to obstacles. This work enhances the local path planner 3DVFH* with this bio-inspired strategy. The algorithm alters the goal-driven function of the 3DVFH* to climb-preferring if obstacles are far away. Prior experiments with bumblebees led to two definitions of flight zone limits depending on the distance to obstacles, leading to two algorithm variants. Both variants reduce the probability of not reaching the goal of a 3DVFH* implementation in Matlab/Simulink. The best variant, 3DVFH*b-b, reduces this probability from 70.7 to 18.6% in city-like worlds using a strong vertical evasion strategy. Energy consumption is higher, and flight paths are longer compared to the algorithm version with pronounced horizontal evasion tendency. A parameter study analyzes the effect of different weighting factors in the cost function. The best parameter combination shows a failure probability of 6.9% in city-like worlds and reduces energy consumption by 28%. Our findings demonstrate the potential of bio-inspired approaches for improving the performance of local path planning algorithms for UAV.
KW  - UAV
KW  - Obstacle avoidance
KW  - Autonomy
KW  - Local path planning
Y1  - 2023
U6  - https://doi.org/10.1007/s13272-023-00691-w
SN  - 1869-5590 (Online)
SN  - 1869-5582 (Print)
N1  - Corresponding author: Karolin Thomessen
PB  - Springer
CY  - Wien
ER  - 
TY  - JOUR
A1  - Esch, Thomas
A1  - Funke, Harald
A1  - Roosen, Peter
A1  - Jarolimek, Ulrich
T1  - Biogene Automobilkraftstoffe in der allgemeinen Luftfahrt
JF  - Motortechnische Zeitschrift (MTZ).
Y1  - 2011
SN  - 0024-8525
U6  - https://doi.org/10.1365/s35146-011-0013-7
VL  - 72
IS  - 1
SP  - 54
EP  - 59
PB  - Springer Nature
CY  - Basel
ER  - 
TY  - JOUR
A1  - Esch, Thomas
A1  - Funke, Harald
A1  - Roosen, Peter
A1  - Jarolimek, Ulrich
T1  - Biogenic Vehicle Fuels in General Aviation Aircrafts
JF  - MTZ worldwide. 72 (2011), H. 1
Y1  - 2011
N1  - recherchierbar für Angehörige der FH Aachen
SP  - 38
EP  - 43
PB  - Springer Automotive Media
CY  - Wiesbaden
ER  - 
TY  - JOUR
A1  - Havermann, Marc
A1  - Seiler, F.
T1  - Boundary Layer Influence on Supersonic Jet/Cross-Flow Interaction in Hypersonic Flow / Havermann, M. ; Seiler, F.
JF  - Notes on Numerical Fluid Mechanics and Multidisciplinary Design. 92 (2006)
Y1  - 2006
SN  - 1612-2909
N1  - New results in numerical and experimental fluid mechanics ; V ;
ISBN 978-3-540-33287-9
SP  - 281
EP  - 288
PB  - -
ER  - 
TY  - JOUR
A1  - Gerhardt, Hans Joachim
A1  - Konrath, B.
A1  - Schönwald, J.
T1  - Brandsimulation für Abnahmeversuche
JF  - HLH : Lüftung, Klima, Heizung, Sanitär, Gebäudetechnik. 56 (2005), H. 8
Y1  - 2005
SN  - 1436-5103
N1  - 2. ISSN: 0017-9906 ; 3. ISSN: 1434-422X ; Zeitschrift unter 13 Z 739 in der Bibliothek
SP  - 46
EP  - 51
ER  - 
TY  - JOUR
A1  - Gerhardt, Hans Joachim
A1  - Krüger, O.
T1  - Building shape influence on local wind loads
JF  - Proceedings of the 2nd European & African Conference on Wind Engineering : 2 EACWE, Palazzo Ducale, Genova, Italy, June 22-26, 1997 / ed. by Giovanni Solari. - Vol. 2
Y1  - 1997
SN  - 88-86281-19-6
N1  - European and African Conference on Wind Engineering <2, 1997, Genova> ; ISBN für beide Bände
PB  - Servizi Grafici Editoriali
CY  - Padova
ER  - 
TY  - JOUR
A1  - Röth, Thilo
A1  - Schreiber, Harold
T1  - CAKE (Computer Aided Kinematic Engineering) im Karrosseriebau und in der passiven Fahrzeugsicherheit / Schreiber , Harold ; Röth, Thilo
JF  - Mobiles. 2002/2003 (2003), H. 33
Y1  - 2003
N1  - in der Bibliothek Eupener Str. vorhanden
SP  - 65
EP  - 67
ER  - 
TY  - JOUR
A1  - Jan Thimo, Grundmann
A1  - Bauer, Waldemar
A1  - Biele, Jens
A1  - Boden, Ralf
A1  - Ceriotti, Matteo
A1  - Cordero, Federico
A1  - Dachwald, Bernd
A1  - Dumont, Etienne
A1  - Grimm, Christian D.
A1  - Hercik, David
T1  - Capabilities of Gossamer-1 derived small spacecraft solar sails carrying Mascot-derived nanolanders for in-situ surveying of NEAs
JF  - Acta Astronautica
Y1  - 2019
U6  - https://doi.org/10.1016/j.actaastro.2018.03.019
SN  - 0094-5765
VL  - 156
IS  - 3
SP  - 330
EP  - 362
PB  - Elsevier
CY  - Amsterdam
ER  -