...Yu Zeng; Grisanu Naing; Vivian Lu; Yuexiang Chen; Robert Dudley ABSTRACT Many wingless arboreal arthropods can glide back to tree trunks following free falls. However, little is known about the behaviors and aerodynamics underlying such aerial performance, and how this may be influenced by body...

... review causes and consequences of wear, damage and moult gaps that temporarily affect wing morphology and flight performance. Bird flight Bat flight Wing wear Aerodynamics Kinematics Drag Vetenskapsrådet http://dx.doi.org/10.13039/501100004359 2020-03707 Knut och Alice...

.... Aerodynamics Biomechanics Bird Control Bio-inspired Insect The Royal Veterinary College European Research Council ERC 682501 Biotechnology and Biological Sciences Research Council BB/R002657/1 Aviation has been founded upon biological insight since its...

... particle image velocimetry, with a horizontal measurement volume placed below the animals, to show that the wake shed by hovering hawkmoths is best described as a series of bilateral, stacked vortex ‘rings’. While the upstroke is aerodynamically active, despite an inclined stroke plane, it produces weaker...

... morphology Behaviour Geometric morphometrics Aerodynamics Lepidoptera Understanding the evolution of wing morphology requires estimating the impact of wing shape variation on fitness-related behaviours. In butterflies, the capacity to fly enabled by wing morphology is crucial throughout adult...

...Marc A. Badger; Hao Wang; Robert Dudley ABSTRACT Flying organisms frequently confront the challenge of maintaining stability when moving within highly dynamic airflows near the Earth's surface. Either aerodynamic or inertial forces generated by appendages and other structures, such as the tail, may...

...Csaba Hefler; Huihe Qiu; Wei Shyy ABSTRACT We investigated the characteristics of interwing aerodynamic interactions across the span of the high aspect ratio, flexible wings of dragonflies under tethered and free-flying conditions. This revealed that the effects of the interactions on the hindwings...

... by minimizing tactile signals exerted on the host's skin. We studied this trade-off between escape speed and stealth in the malaria mosquito Anopheles coluzzii using 3D motion analysis of high-speed stereoscopic videos of mosquito take-offs and aerodynamic modeling. We found that during the push-off phase...

... represent large and small species, respectively. We first estimated the aerodynamic forces, moments and the mechanical power of escape manoeuvres using measured wing kinematics. Comparing active-manoeuvring and passive-damping aerodynamic moments, we found that pitch dynamics were lightly damped...

...Marco KleinHeerenbrink; Kajsa Warfvinge; Anders Hedenström ABSTRACT Gliding flight is a relatively inexpensive mode of flight used by many larger bird species, where potential energy is used to cover the cost of aerodynamic drag. Birds have great flexibility in their flight configuration, allowing...

... available from the flight muscles (estimated using an aerodynamic analysis) was inversely related to WL. This could simply be because birds with a higher WL have relatively smaller flight muscles. Alternatively or additionally, variation in the aerodynamic load on the wing resulting from differences in wing...

...Ruben Berthé; Fritz-Olaf Lehmann ABSTRACT The precise control of body posture by turning moments is key to elevated locomotor performance in flying animals. Although elevated moments for body stabilization are typically produced by wing aerodynamics, animals also steer using drag on body appendages...

... and that they exert active control over the aerodynamic forces they experience during their descent, despite their apparent lack of specialized control surfaces. * Author for correspondence ( [email protected] ) Competing interests The authors declare no competing or financial interests. 22 4 2014...

... of fruit flies ( Drosophila hydei ), using high-speed 3D videography to track body and wing kinematics and a dynamically scaled robot to study the production of aerodynamic forces and moments. Although the size, degree and speed of the saccades vary, the dynamics of the maneuver are remarkably stereotypic...

..., both the magnitude and time-history of aerodynamic forces can be estimated. At most speeds the downstroke generates both lift and thrust, whereas the function of the upstroke changes with forward flight speed. At hovering and slow speed bats use a leading edge vortex to enhance the lift beyond...

... the underlying kinematics and resulting aerodynamic mechanisms of low speed turning flight in the pigeon ( Columba livia ). Three birds were trained to perform 90 deg level turns in a stereotypical fashion and detailed three-dimensional (3D) kinematics were recorded at high speeds. Applying the angular momentum...

...Arvind Santhanakrishnan; Alice K. Robinson; Shannon Jones; Audrey Ann Low; Sneha Gadi; Tyson L. Hedrick; Laura A. Miller The aerodynamics of flapping flight for the smallest insects such as thrips is often characterized by a ‘clap and fling’ of the wings at the end of the upstroke and the beginning...

...E. Salcedo; C. Treviño; R. O. Vargas; L. Martínez-Suástegui SUMMARY An experimental investigation of near field aerodynamics of wind dispersed rotary seeds has been performed using stereoscopic digital particle image velocimetry (DPIV). The detailed three-dimensional flow structure of the leading...

... ) 24 5 2012 5 9 2012 © 2013. 2013 laminar-to-turbulent transition separation-induced transition low Reynolds number flow aerodynamics hummingbird flight Since Weis-Fogh's ( Weis-Fogh, 1973 ) pioneering analysis of hovering animal flight, it has generally been assumed...

... horizontal). In the present paper, wing and body kinematics of four freely hovering true hoverflies were measured using three-dimensional high-speed video. The measured wing kinematics was used in a Navier–Stokes solver to compute the aerodynamic forces of the insects. The stroke amplitude of the hoverflies...