Results 41 to 50 of about 4,463 (201)

Rotational accelerations stabilize leading edge vortices on revolving fly wings [PDF]

open access: yes, 2009
The aerodynamic performance of hovering insects is largely explained by the presence of a stably attached leading edge vortex (LEV) on top of their wings. Although LEVs have been visualized on real, physically modeled, and simulated insects, the physical
Dickinson, Michael H., Lentink, David
core   +2 more sources

Body flexion effect on the flight dynamics of a hovering hawkmoth

open access: yesJournal of Biomechanical Science and Engineering, 2014
The position and attitude controls of flapping wing flyers are challenging because of their inherent instabilities. Insects can cope with such difficulties by finely and quickly tuning their wing kinematics.
Ryusuke NODA, Toshiyuki NAKATA, Hao LIU
doaj   +1 more source

Armament imbalances: match and mismatch in plant-pollinator traits of highly specialized long-spurred orchids. [PDF]

open access: yesPLoS ONE, 2012
Some species of long-spurred orchids achieve pollination by a close association with long-tongued hawkmoths. Among them, several Habenaria species present specialized mechanisms, where pollination success depends on the attachment of pollinaria onto the ...
Marcela Moré   +5 more
doaj   +1 more source

On mathematical modelling of insect flight dynamics in the context of micro air vehicles [PDF]

open access: yes, 2006
This paper discusses several aspects of mathematical modelling relevant to the flight dynamics of insect flight in the context of insect-like flapping wing micro air vehicles (MAVs).
Ansar, Salman A.   +2 more
core   +1 more source

Flight Mechanics and Control of Escape Manoeuvres in Hummingbirds. II. Aerodynamic Force Production, Flight Control and Performance Limitations [PDF]

open access: yes, 2016
The superior manoeuvrability of hummingbirds emerges from complex interactions of specialized neural and physiological processes with the unique flight dynamics of flapping wings.
Cheng, Bo   +7 more
core   +3 more sources

Northerly-Outlying Records of Two Species of Hawkmoths (Lepidoptera: Sphingidae) in Michigan [PDF]

open access: yes, 2017
(Excerpt) The Grand Traverse Region of Lower Michigan is of special interest zoo- geographically in that it includes the northernmost known localities for various species of organisms characteristic of the Carolinian Biotic Province (Douglass 1977, 1983;
Douglass, John F
core   +2 more sources

Colour constancy in diurnal and nocturnal hawkmoths [PDF]

open access: yesJournal of Experimental Biology, 2004
SUMMARY Diurnal and nocturnal hawkmoths have been shown to use colour vision for flower discrimination. Here, we present evidence that the nocturnal hawkmoth Deilephila elpenor and the diurnal hawkmoth Macroglossum stellatarum also have colour constancy. Colour constancy was shown in D.
Anna, Balkenius, Almut, Kelber
openaire   +2 more sources

The roles of vision and antennal mechanoreception in hawkmoth flight control

open access: yeseLife, 2018
Flying animals need continual sensory feedback about their body position and orientation for flight control. The visual system provides essential but slow feedback. In contrast, mechanosensory channels can provide feedback at much shorter timescales. How
Ajinkya Dahake   +4 more
doaj   +1 more source

Application of digital particle image velocimetry to insect aerodynamics: measurement of the leading-edge vortex and near wake of a Hawkmoth.

open access: yes, 2007
Some insects use leading-edge vortices to generate high lift forces, as has been inferred from qualitative smoke visualisations of the flow around their wings.
Bomphrey, Richard J.   +3 more
core   +1 more source

Feedback Control as a Framework for Understanding Tradeoffs in Biology [PDF]

open access: yes, 2014
Control theory arose from a need to control synthetic systems. From regulating steam engines to tuning radios to devices capable of autonomous movement, it provided a formal mathematical basis for understanding the role of feedback in the stability (or ...
Ankarali, Mustafa Mert   +9 more
core   +1 more source

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