Advanced

Bird or bat: comparing airframe design and flight performance.

Hedenström, Anders LU ; Johansson, Christoffer LU and Spedding, Geoffrey R (2009) In Bioinspiration & Biomimetics 4(1).
Abstract
Birds and bats have evolved powered flight independently, which makes a comparison of evolutionary 'design' solutions potentially interesting. In this paper we highlight similarities and differences with respect to flight characteristics, including morphology, flight kinematics, aerodynamics, energetics and flight performance. Birds' size range is 0.002-15 kg and bats' size range is 0.002-1.5 kg. The wingbeat kinematics differ between birds and bats, which is mainly due to the different flexing of the wing during the upstroke and constraints by having a wing of feathers and a skin membrane, respectively. Aerodynamically, bats appear to generate a more complex wake than birds. Bats may be more closely adapted for slow maneuvering flight... (More)
Birds and bats have evolved powered flight independently, which makes a comparison of evolutionary 'design' solutions potentially interesting. In this paper we highlight similarities and differences with respect to flight characteristics, including morphology, flight kinematics, aerodynamics, energetics and flight performance. Birds' size range is 0.002-15 kg and bats' size range is 0.002-1.5 kg. The wingbeat kinematics differ between birds and bats, which is mainly due to the different flexing of the wing during the upstroke and constraints by having a wing of feathers and a skin membrane, respectively. Aerodynamically, bats appear to generate a more complex wake than birds. Bats may be more closely adapted for slow maneuvering flight than birds, as required by their aerial hawking foraging habits. The metabolic rate and power required to fly are similar among birds and bats. Both groups share many characteristics associated with flight, such as for example low amounts of DNA in cells, the ability to accumulate fat as fuel for hibernation and migration, and parallel habitat-related wing shape adaptations. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Bioinspiration & Biomimetics
volume
4
issue
1
publisher
IOP Publishing
external identifiers
  • wos:000265596700002
  • scopus:64549092451
ISSN
1748-3190
DOI
10.1088/1748-3182/4/1/015001
language
English
LU publication?
yes
id
c5459549-ff57-4497-9bc6-3af1208b2365 (old id 1368034)
date added to LUP
2009-04-07 07:43:53
date last changed
2017-09-03 03:58:17
@article{c5459549-ff57-4497-9bc6-3af1208b2365,
  abstract     = {Birds and bats have evolved powered flight independently, which makes a comparison of evolutionary 'design' solutions potentially interesting. In this paper we highlight similarities and differences with respect to flight characteristics, including morphology, flight kinematics, aerodynamics, energetics and flight performance. Birds' size range is 0.002-15 kg and bats' size range is 0.002-1.5 kg. The wingbeat kinematics differ between birds and bats, which is mainly due to the different flexing of the wing during the upstroke and constraints by having a wing of feathers and a skin membrane, respectively. Aerodynamically, bats appear to generate a more complex wake than birds. Bats may be more closely adapted for slow maneuvering flight than birds, as required by their aerial hawking foraging habits. The metabolic rate and power required to fly are similar among birds and bats. Both groups share many characteristics associated with flight, such as for example low amounts of DNA in cells, the ability to accumulate fat as fuel for hibernation and migration, and parallel habitat-related wing shape adaptations.},
  articleno    = {15001},
  author       = {Hedenström, Anders and Johansson, Christoffer and Spedding, Geoffrey R},
  issn         = {1748-3190},
  language     = {eng},
  number       = {1},
  publisher    = {IOP Publishing},
  series       = {Bioinspiration & Biomimetics},
  title        = {Bird or bat: comparing airframe design and flight performance.},
  url          = {http://dx.doi.org/10.1088/1748-3182/4/1/015001},
  volume       = {4},
  year         = {2009},
}