Zobrazeno 1 - 10
of 45
pro vyhledávání: '"Gehrke, Alexander"'
Autor:
Gehrke, Alexander, Mulleners, Karen
Airborne insects generate a leading edge vortex when they flap their wings. This coherent vortex is a low pressure region that enhances the lift of flapping wings compared to fixed wings. Insect wings are thin membranes strengthened by a system of ve
Externí odkaz:
http://arxiv.org/abs/2410.01670
We designed and built a three degrees-of-freedom (DOF) flapping wing robot, Flapperoo, to study the aerodynamic benefits of wing folding and twisting. Forces and moments of this physical model are measured in wind tunnel tests over a Strouhal number
Externí odkaz:
http://arxiv.org/abs/2408.15577
Hovering insects are limited by their physiology and need to rotate their wings at the end of each back and forth motion to keep the wing's leading edge ahead of its trailing edge. The wing rotation at the end of each half-stroke pushes the leading e
Externí odkaz:
http://arxiv.org/abs/2207.14257
Natural fliers like bats exploit the complex fluid-structure interaction between their flexible membrane wings and the air with great ease. Yet, replicating and scaling the balance between the structural and fluid-dynamical parameters of unsteady mem
Externí odkaz:
http://arxiv.org/abs/2203.14055
The levels of agility and flight or swimming performance demonstrated by insects, birds, fish, and even some aquatic invertebrates, are often vastly superior to what even the most advanced human-engineered vehicles operating in the same regimes are c
Externí odkaz:
http://arxiv.org/abs/2110.07677
Autor:
Gehrke, Alexander, Mulleners, Karen
Biological flapping wing fliers operate efficiently and robustly in a wide range of flight conditions and are a great source of inspiration to engineers. The unsteady aerodynamics of flapping-wings are dominated by large-scale vortical structures tha
Externí odkaz:
http://arxiv.org/abs/2007.15729
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Autor:
Gehrke, Alexander.
Univ., Diss.--Mannheim, 2002.
Externí odkaz:
http://www.gbv.de/dms/zbw/364440937.pdf
Autor:
Gehrke, Alexander
In this thesis, the aerodynamic challenges in flapping wing flight are addressed. In particular, the effects of different wing kinematics, flexibilities, and planforms on the the leading edge vortex development and aerodynamic performance are investi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4a1986d9ef105e8bc4d5de5f056c50c8
Autor:
Gehrke, Alexander1 Alexander.Gehrke@uni-wuerzburg.de, Balbach, Nico1 Nico.Balbach@uni-wuerzburg.de, Rauch, Yong-Mi2 Yong-Mi.Rauch@ub.hu-berlin.de, Degkwitz, Andreas2 andreas.degkwitz@ub.hu-berlin.de, Puppe, Frank1 Frank.Puppe@uni-wuerzburg.de
Publikováno v:
Bibliothek Forschung und Praxis. 2019, Vol. 43 Issue 3, p447-452. 6p. 6 Color Photographs, 2 Black and White Photographs.
