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Actuator disk model and span efficiency of flapping flight in bats based on time-resolved PIV measurements

Muijres, Florian LU ; Spedding, G.R. ; Winter, York and Hedenström, Anders LU (2011) In Experiments in Fluids 51. p.511-525
Abstract
All animals flap their wings in powered flight to provide both lift and thrust, yet few human-engineered designs do so. When combined with flexible wing surfaces, the resulting unsteady fluid flows and interactions in flapping flight can be complex to describe, understand, and model. Here, a simple modified actuator disk is used in a quasi-steady description of the net aerodynamic lift forces on several species of bat whose wakes are measured with time-resolved PIV. The model appears to capture the time-averaged and instantaneous lift forces on the wings and body, and could be used as basis for comparing flapping flight efficiency of different animal species and micro air vehicle designs.
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author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Experiments in Fluids
volume
51
pages
511 - 525
publisher
Springer
external identifiers
  • wos:000293135900015
  • scopus:80052657057
ISSN
1432-1114
DOI
10.1007/s00348-011-1067-5
language
English
LU publication?
yes
id
74535e47-4531-4c81-8b13-dda78864a28c (old id 1886304)
date added to LUP
2016-04-01 09:56:51
date last changed
2024-05-05 23:32:40
@article{74535e47-4531-4c81-8b13-dda78864a28c,
  abstract     = {{All animals flap their wings in powered flight to provide both lift and thrust, yet few human-engineered designs do so. When combined with flexible wing surfaces, the resulting unsteady fluid flows and interactions in flapping flight can be complex to describe, understand, and model. Here, a simple modified actuator disk is used in a quasi-steady description of the net aerodynamic lift forces on several species of bat whose wakes are measured with time-resolved PIV. The model appears to capture the time-averaged and instantaneous lift forces on the wings and body, and could be used as basis for comparing flapping flight efficiency of different animal species and micro air vehicle designs.}},
  author       = {{Muijres, Florian and Spedding, G.R. and Winter, York and Hedenström, Anders}},
  issn         = {{1432-1114}},
  language     = {{eng}},
  pages        = {{511--525}},
  publisher    = {{Springer}},
  series       = {{Experiments in Fluids}},
  title        = {{Actuator disk model and span efficiency of flapping flight in bats based on time-resolved PIV measurements}},
  url          = {{http://dx.doi.org/10.1007/s00348-011-1067-5}},
  doi          = {{10.1007/s00348-011-1067-5}},
  volume       = {{51}},
  year         = {{2011}},
}