Results 21 to 30 of about 3,340,625 (336)
Animalopters - towards a new dimension of flight mechanics [PDF]
Transport, 2002 Recently, it has been recognised that flapping wing propulsion can be more efficient than conventional propellers if applied to very small-scale vehicles, so-called MAVs (micro air vehicles).
J. A. Goszczynski +3 more
doaj +3 more sources
Separasi Aliran pada Permukaan Atas Airfoil Kumbang Kelapa dengan Metoda China Clay
Metal: Jurnal Sistem Mekanik dan Termal, 2020 This study is aimed at identifying airfoils by mimicking the curved shape of the wings of a flying animal. This interferes with what people did in ancient times to obtain objects capable of flying.
Benny Dwika Leonanda
doaj +1 more source
JURNAL BIOLOGI TROPIS, 2022 The butterfly is one of the insects type that originated from the order of lepidoptera, which having scaly wings. The scales is what gives pattern on the butterfliesââ¬â¢ wings.
Rawindy Aulia Hapsari +2 more
semanticscholar +1 more source
A linear systems analysis of the yaw dynamics of a dynamically scaled insect model [PDF]
, 2010 Recent studies suggest that fruit flies use subtle changes to their wing motion to actively generate forces during aerial maneuvers. In addition, it has been estimated that the passive rotational damping caused by the flapping wings of an insect is ...
Dickinson, Michael H. +3 more
core +1 more source
Bird wings act as a suspension system that rejects gusts
Proceedings of the Royal Society B, 2020 Musculoskeletal systems cope with many environmental perturbations without neurological control. These passive preflex responses aid animals to move swiftly through complex terrain. Whether preflexes play a substantial role in animal flight is uncertain.
Jorn A. Cheney +6 more
semanticscholar +1 more source
Animal migration research takes wing [PDF]
Current Biology, 2018 In the beginning there was great confusion about animal migration. Aristotle, noting that the types of birds around him changed with the seasons, concluded that summer redstarts turned into robins at the onset of winter, and that garden warblers became blackcaps [1]. Others thought that birds disappear in winter because they hibernate submerged in mud.
openaire +2 more sources
Of hummingbirds and helicopters: Hovering costs, competitive ability, and foraging strategies [PDF]
, 2004 Wing morphology and flight kinematics profoundly influence foraging costs and the overall behavioral ecology of hummingbirds. By analogy with helicopters, previous energetic studies have applied the momentum theory of aircraft propellers to estimate ...
Altshuler, Douglas L. +2 more
core +1 more source
Scientific Reports, 2020 Common cuckoos Cuculus canorus are obligate nest parasites yet young birds reach their distant, species-specific wintering grounds without being able to rely on guidance from experienced conspecifics – in fact they never meet their parents.
K. Thorup +7 more
semanticscholar +1 more source
Theoretical modelling of wakes from retractable flapping wings in forward flight [PDF]
PeerJ, 2013 A free-wake method is used to simulate the wake from retractable, jointed wings. The method serves to complement existing experimental studies that visualise flying animal wakes.
Ben Parslew, William J. Crowther
doaj +2 more sources
Fast animal pose estimation using deep neural networks
Nature Methods, 2018 The need for automated and efficient systems for tracking full animal pose has increased with the complexity of behavioral data and analyses. Here we introduce LEAP (LEAP estimates animal pose), a deep-learning-based method for predicting the positions ...
Talmo D. Pereira +6 more
semanticscholar +1 more source