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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
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
2011-04-06 12:36:33
date last changed
2017-10-01 03:03:32
@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},
  volume       = {51},
  year         = {2011},
}