Bat flight: aerodynamics, kinematics and flight morphology
@article{Hedenstrm2015BatFA,
title={Bat flight: aerodynamics, kinematics and flight morphology},
author={Anders Hedenstr{\"o}m and L. Christoffer Johansson},
journal={The Journal of Experimental Biology},
year={2015},
volume={218},
pages={653 - 663},
url={https://api.semanticscholar.org/CorpusID:21295393}
}The way in which the bat's wing structure equips it for efficient and manoeuvrable flight is reviewed, with a focus on bat wing structure and aerodynamic performance.
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115 References
Comparing Aerodynamic Efficiency in Birds and Bats Suggests Better Flight Performance in Birds
- 2012
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Despite the differences in performance, the wake morphology of both birds and bat resemble the optimal wake for their respective lift-to-drag ratio regimes, which suggests that evolution has optimized performance relative to the respective conditions of birds and bats, but that maximum performance is possibly limited by phylogenetic constraints.
Bird or bat: comparing airframe design and flight performance
- 2009
Engineering, Biology
In this paper, similarities and differences with respect to flight characteristics, including morphology, flight kinematics, aerodynamics, energetics and flight performance are highlighted.
Vortex flow visualizations reveal change in upstroke function with flight speed in bats
- 1986
Biology, Environmental Science
It is presented the first evidence from aerodynamic experiments that in an individual bat or bat species, upstroke function and wingbeat gait also vary with flight speed, with aerodynamic lift being generated during the upstroke at high speeds but not during slow flight.
Comparative aerodynamic performance of flapping flight in two bat species using time-resolved wake visualization
- 2011
Biology, Engineering
Time-resolved fluid wake data of two species of bats flying freely across a range of flight speeds using stereoscopic digital particle image velocimetry in a wind tunnel shows that the wake dynamics and flight performance of both bat species are similar.
The aerodynamics of insect flight
- 2003
Biology, Physics
The basic physical principles underlying flapping flight in insects, results of recent experiments concerning the aerodynamics of insect flight, as well as the different approaches used to model these phenomena are reviewed.
Leading edge vortices in lesser long-nosed bats occurring at slow but not fast flight speeds
- 2014
Biology, Environmental Science
The flow above the wing of lesser long-nosed bats at slow and cruising speed using particle image velocimetry (PIV) is determined and suggests that bats are able to control the development of the LEV and potential control mechanisms are discussed.
Kinematics of flight and the relationship to the vortex wake of a Pallas' long tongued bat (Glossophaga soricina)
- 2010
Biology, Environmental Science
The detailed 3D wingbeat kinematics of bats, Glossophaga soricina, flying in a wind tunnel over a range of flight speeds was determined from high-speed video and strongly indicates that the flight of bats is governed by an unsteady high-lift mechanism at low flight speeds.
Leading-edge vortices in insect flight
- 1996
Biology, Physics
This work visualized the airflow around the wings of the hawkmoth Manduca sexta and a 'hovering' large mechanical model—the flapper, and found an intense leading-edge vortex found on the down-stroke, of sufficient strength to explain the high-lift forces.
Form and Function in Avian Flight
- 1988
Biology
This chapter explores how the mechanics of flapping flight have molded the flight adaptations of birds and uses a multivariate analysis of wing morphology to demonstrate how these constraints interact to different degrees in different birds and underlie correlations among flight morphology, ecology, and behavior.
Bat Flight Generates Complex Aerodynamic Tracks
- 2007
Biology, Physics
It is shown that the wakes of a small bat species differ from those of birds in some important respects, and interpretations of the unsteady aerodynamic performance and function of membranous-winged, flapping flight should change modeling strategies for the study of equivalent natural and engineered flying devices.









