Results 31 to 40 of about 4,463 (201)
A CFD-informed quasi-steady model of flapping-wing aerodynamics [PDF]
, 2015 Aerodynamic performance and agility during flapping flight are determined by the combination of wing shape and kinematics. The degree of morphological and kinematic optimization is unknown and depends upon a large parameter space.
Bomphrey, R J, Liu, H, Nakata, T
core +3 more sources
The effect of aspect ratio on the leading-edge vortex over an insect-like flapping wing [PDF]
, 2015 Insect wing shapes are diverse and a renowned source of inspiration for the new generation of autonomous flapping vehicles, yet the aerodynamic consequences of varying geometry is not well understood.
Bomphrey, R J, Knowles, K, Phillips, N
core +3 more sources
Can scalable design of wings for flapping wing micro air vehicle be inspired by natural flyers? [PDF]
, 2018 Lift production is constantly a great challenge for flapping wing micro air vehicles (MAVs). Designing a workable wing, therefore, plays an essential role. Dimensional analysis is an effective and valuable tool in studying the biomechanics of flyers.
Chen, Yi +4 more
core +1 more source
An ineffective antidote for hawkmoths
European Journal for Philosophy of Science, 2022 AbstractIn recent publications we have drawn attention to the fact that if the dynamics of a model is structurally unstable, then the presence of structural model error places in-principle limits on the model’s ability to generate decision-relevant probability forecasts.
Frigg, Roman, Smith, Leonard A.
openaire +3 more sources
Direct lateral maneuvers in hawkmoths
Biology Open, 2016 ABSTRACTWe used videography to investigate direct lateral maneuvers, i.e. ‘sideslips’, of the hawkmoth Manduca sexta. M. sexta sideslip by rolling their entire body and wings to reorient their net force vector. During sideslip they increase net aerodynamic force by flapping with greater amplitude, (in both wing elevation and sweep), allowing them to ...
Jeremy S. M. Greeter, Tyson L. Hedrick
openaire +3 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
Experimental investigation of some aspects of insect-like flapping flight aerodynamics for application to micro air vehicles [PDF]
, 2009 Insect-like flapping flight offers a power-efficient and highly manoeuvrable basis for micro air vehicles for indoor applications. Some aspects of the aerodynamics associated with the sweeping phase of insect wing kinematics are examined by making ...
Ansari, S. A. +5 more
core +1 more source
Dynamics of pine hawkmoth (Hyloicus pinastri L.): Search for stationary dynamical regime [PDF]
Computational Ecology and Software, 2013 In current publication possible population dynamics regimes are analyzed using pre-model statistical method. Method was applied to well-known pine hawkmoth (Hyloicus pinastri L.) time series (Schwerdtfeger, 1944, 1968).
L.V. Nedorezov
doaj
Frontiers in Cellular Neuroscience, 2018 For the hawkmoth Manduca sexta accumulating evidence suggests that pheromone transduction acts via a metabotropic signal transduction cascade, with G-protein-dependent phospholipase C (PLC) activations generating diacylglycerol (DAG) and inositol ...
Petra Gawalek, Monika Stengl
doaj +1 more source
Journal of Threatened Taxa, 2020 The present paper reports the sighting of the hawkmoth Theretra lycetus (Cramer, 1775) from Wangdue Phodrang district of Bhutan. Addition to the present species, we have 97 species of Sphingidae in Bhutan.
Sangay Nidup, Jatishwor Singh Irungbam
doaj +1 more source