High aerodynamic lift from the tail reduces drag in gliding raptors
Many functions have been postulated for the aerodynamic role of the avian tail during steady-
state flight. By analogy with conventional aircraft, the tail might provide passive pitch stability …
state flight. By analogy with conventional aircraft, the tail might provide passive pitch stability …
Bird wings act as a suspension system that rejects gusts
Musculoskeletal systems cope with many environmental perturbations without neurological
control. These passive preflex responses aid animals to move swiftly through complex …
control. These passive preflex responses aid animals to move swiftly through complex …
Robotic avian wing explains aerodynamic advantages of wing folding and stroke tilting in flap** flight
Avian flap** strategies have the potential to revolutionize future drones as they may
considerably improve agility, increase slow speed flight capability, and extend the …
considerably improve agility, increase slow speed flight capability, and extend the …
Developments of theories of avian movement strategies in wind and their validation with bio-logging data
Y Goto, K Yoda - Journal of the Physical Society of Japan, 2023 - journals.jps.jp
Animal movement represents an interdisciplinary research field involving ecology and
physics. Animal locomotion is composed of three interrelated hierarchies: micro-scale …
physics. Animal locomotion is composed of three interrelated hierarchies: micro-scale …
Speed consensus and the 'Goldilocks principle'in flocking birds (Columba livia)
Highlights•Moving groups must reach speed consensus to retain cohesion and grou**
benefits.•We investigated speed in solo and group flights of homing pigeons using …
benefits.•We investigated speed in solo and group flights of homing pigeons using …
Aerodynamic efficiency explains flap** strategies used by birds
LC Johansson - Proceedings of the National Academy of Sciences, 2024 - pnas.org
A faster cruising speed increases drag and thereby the thrust (T) needed to fly, while weight
and lift (L) requirement remains constant. Birds can adjust their wingbeat in multiple ways to …
and lift (L) requirement remains constant. Birds can adjust their wingbeat in multiple ways to …
Flight activity and effort of breeding pied flycatchers in the wild, revealed with accelerometers and machine learning
Flight behaviours of birds have been extensively studied from different angles such as their
kinematics, aerodynamics and, more generally, their migration patterns. Nevertheless, much …
kinematics, aerodynamics and, more generally, their migration patterns. Nevertheless, much …
Flight in ground effect dramatically reduces aerodynamic costs in bats
Most flying animals, from insects to seabirds [1], perform flights close to ground or water
when taking off or landing [2], drinking, and feeding [3–5] or when traveling near water …
when taking off or landing [2], drinking, and feeding [3–5] or when traveling near water …
Measuring power input, power output and energy conversion efficiency in un-instrumented flying birds
Cost of flight at various speeds is a crucial determinant of flight behaviour in birds.
Aerodynamic models, predicting that mechanical power (P mech) varies with flight speed in …
Aerodynamic models, predicting that mechanical power (P mech) varies with flight speed in …
Aerodynamics of manoeuvring flight in brown long-eared bats (Plecotus auritus)
In this study, we explicitly examine the aerodynamics of manoeuvring flight in animals. We
studied brown long-eared bats flying in a wind tunnel while performing basic sideways …
studied brown long-eared bats flying in a wind tunnel while performing basic sideways …