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Keywords: pitch
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Journal Articles
J Exp Biol (2016) 219 (22): 3518–3531.
Published: 15 November 2016
... away from perceived threats using a drastic escape response that featured body pitch and roll rotations coupled with a large linear acceleration. Hummingbirds changed their flapping frequency and wing trajectory in all three degrees of freedom on a stroke-by-stroke basis, likely causing rapid...
Includes: Supplementary data
Journal Articles
J Exp Biol (2016) 219 (11): 1639–1648.
Published: 01 June 2016
... wings, the abrupt push against the ground sends the insect into the air rotating forward in the sagittal (pitch) plane. However, in the air, B. tabaci can recover from this rotation remarkably fast (less than 11 ms), even before spreading its wings and flapping. The timing of body rotation in air...
Includes: Supplementary data
Journal Articles
J Exp Biol (2008) 211 (18): 3009–3019.
Published: 15 September 2008
... for the pitch of the body while motions of the body, tail, neck and feet generate forces normal (vertically) to the swimming direction that interact with buoyancy to change the birds' trajectory. Vertical maneuvers in cormorants are asymmetric in energy cost. When turning upward, the birds use their buoyancy...
Journal Articles
J Exp Biol (2008) 211 (7): 1141–1147.
Published: 01 April 2008
... diving underwater. Muscle activity was seen during nearly every dive and was always correlated with changes in pitch where the cranial body rotated ventrally along the long axis of the body. The magnitude of muscle activity during these maneuvers was, at times, equal to that observed during quiet...
Journal Articles
J Exp Biol (2005) 208 (2): 327–344.
Published: 15 January 2005
... measurements, and force balance measurements. The ventral keels of all three forms produced LEVs that grew in circulation along the bodies, resembling the LEVs produced around delta-winged aircraft. These spiral vortices formed above the keels and increased in circulation as pitch angle became more positive...
Journal Articles
J Exp Biol (2004) 207 (25): 4427–4438.
Published: 01 December 2004
..., but the trunk rotates on a stabilized head during galloping. Do the same movement patterns occur during in-place locomotion? Head and trunk pitch rotations were measured, and yaw and roll rotations estimated from cine films of three adult vervet monkeys( Cercopithecus aethiops L. 1758) walking and galloping...
Journal Articles
J Exp Biol (1992) 165 (1): 21–41.
Published: 01 April 1992
...VANCE A. TUCKER 1. The centre of area of the wings of a Harris' hawk gliding freely in a wind tunnel moved forward 0.09 wing chord lengths when the hawk increased its wing span from 0.68 to 1.07 m. The movement of the centre of area probably produces a positive pitching moment that, if unopposed...