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Keywords: bird flight
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Journal Articles
J Exp Biol (2022) 225 (1): jeb242280.
Published: 4 January 2022
... tensor Bird flight Summary: Demonstration of the use of calibrated computed tomography to accurately quantify the three-dimensional centre of mass and moments of inertia of birds of prey. © 2022. Published by The Company of Biologists Ltd 2021 This is an Open Access article distributed...
Includes: Supplementary data
Journal Articles
J Exp Biol (2020) 223 (21): jeb225839.
Published: 12 November 2020
.... A. ( 2015 ). The biophysics of bird flight: functional relationships integrate aerodynamics, morphology, kinematics, muscles, and sensors . Can. J. Zool.   93 , 961 - 975 . 10.1139/cjz-2015-0103 Askew , G. N. and Marsh , R. L. ( 1997 ). The effects of length trajectory...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (9): jeb185488.
Published: 8 May 2019
... ausgearbeiteter verfahren der windkanaltechnik und der stereophotogrammetrie . In Biona Report 3: Bird Flight - Vogelflug (ed. W.   Nachtigall ), pp. 139 - 160 . Saarbrücken : Gustav Fischer Verlag . Bilo , D. ( 1971 ). Flugbiophysik von kleinvogeln I. Kinematik und aerodynamik des...
Includes: Supplementary data
Journal Articles
J Exp Biol (2010) 213 (11): 1930–1939.
Published: 1 June 2010
... stall effect, and the transition into flow separation. Also, the influence of the delayed stall and flow separation was clearly visible in measurements of instantaneous net force over the wingbeat cycle. Here, we show that, even at reduced frequencies as low as those of large bird flight, unsteady...
Journal Articles
J Exp Biol (2008) 211 (2): 258–266.
Published: 15 January 2008
... control stability bird flight insect flight flight simulator photogrammetry virtual reality biomechanics steppe eagle Aquila nipalensis The central problem with tethering is that it breaks the dynamics of the mechanical system and thereby breaks the feedback loops that naturally operate...
Includes: Multimedia, Supplementary data
Journal Articles
J Exp Biol (2007) 210 (23): 4136–4149.
Published: 1 December 2007
.... An animation of the complete sequence at 500 frames s–1 showing the entire bird is provided in supplementary material Movie 7. bird flight Aquila nipalensis flight control stability aeroelastic device high-lift device flow control leading-edge flap Kruger flap alula The wings of birds...
Includes: Multimedia, Supplementary data
Journal Articles
J Exp Biol (2007) 210 (6): 1075–1083.
Published: 15 March 2007
... 2007 © The Company of Biologists Limited 2007 2007 bird flight power curve metabolic rate The rates of metabolic energy release required to support vertebrate flapping flight are far greater than those of other modes of locomotion. The high metabolic cost of flight is especially...
Journal Articles
J Exp Biol (2004) 207 (24): 4255–4268.
Published: 15 November 2004
... at frame rate 125 s –1 , shutter speed 1/1850 s) was mounted 4 m downstream from the bird's flight position. The location of the camera far back in the first diffuser causes a negligible effect on the airflow around the bird (see Pennycuick et al.,1997 ). From the camera AVI-output, strings of JPEGs were...
Journal Articles
J Exp Biol (1992) 165 (1): 21–41.
Published: 1 April 1992
... forward as the wing span increases (Hankin, 1913). If the centre of pressure for the aerodynamic force on the wings also moves forward, an increase Key words: bird flight, centre of area, centre of pressure, pitch, pitching moment, primary feathers, wind tunnel, wing tips, Parabuteo unicinctus. 22 V...
Journal Articles
J Exp Biol (1992) 164 (1): 19–38.
Published: 1 March 1992
... climbing bird species was calculated to be in the range 16–41 joules per kilogram muscle mass, showing a significant positive correlation with body mass 4 10 1991 © 1992 by Company of Biologists 1992 bird flight climbing performance flight power fuel load load carrying muscle work...
Journal Articles
J Exp Biol (1990) 149 (1): 469–489.
Published: 1 March 1990
... (1975, 1989) reviewed the aerodynamic character- istics of soaring birds, the motions of the air through which they glide and the manoeuvres that they use to stay aloft and move with respect to the ground. Birds can optimize their aerodynamic characteristics by changing their wing Key words: bird flight...
Journal Articles
J Exp Biol (1990) 149 (1): 449–468.
Published: 1 March 1990
... it is not associated with a significant lift component. Key words: bird flight, drag coefficient, gliding performance, Harris' hawk, parasite drag, bolar curve, wind tunnel. 450 V. A . TUCKER Recent studies of gliding flight (Tucker, 1987, 1988; Tucker and Heine, 1990) use body drag as one of the terms...
Journal Articles
J Exp Biol (1986) 125 (1): 287–307.
Published: 1 September 1986
... is presented that this apparent wake momentum deficit may arise because the description of the real wake vorticity distribution is too simplistic. The implications of these results for theoretical models of bird flight are briefly discussed. J. exp. Biol. 125, 287-307 (1986) 2 8 7 Printed in Great Britain ©...
Journal Articles
J Exp Biol (1985) 114 (1): 285–288.
Published: 1 January 1985
...-and-fling and steady-state flight. 9 7 1984 © 1985 by Company of Biologists 1985 Bird flight aerodynamics take-off. J. exp. Biol. 114. 285-288 (1985) 285 Printed in Great Britain © The Company of Biologists Limited 1985 LEG THRUST IMPORTANT IN FLIGHT TAKE-OFF IN THE PIGEON BY FRANK H...
Journal Articles
J Exp Biol (1984) 111 (1): 81–102.
Published: 1 July 1984
...G. R. SPEDDING; J. M.V. RAYNER; C. J. PENNYCUICK A technique is described whereby the vortex wake of birds in slow forward flight may be investigated with a view towards testing some of the assumptions and predictions of existing theoretical models of bird flight. Multiflash stereophotogrammetry...