Results 1 to 10 of about 82,446 (310)

The spectrum of animal flight: insects to pterosaurs

Progress in Aerospace Sciences, 2000
Abstract This paper summarises available data on the geometry and flight characteristics of all types of winged animals, including insects, gliders, birds, bats and pterosaurs. Helicopter momentum stream tube theory has been adapted for the estimation of the upper size limits for flying animals in gliding, hovering, solitary and formation flight, and
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Animal Flight Mechanics in Physically Variable Gas Mixtures

Journal of Experimental Biology, 1996
ABSTRACT Empirical studies of animal flight performance have generally been implemented within the contemporary atmosphere. Experimental alteration of the physical composition of gas mixtures, however, permits construction of novel flight media and the non-invasive manipulation of flight biomechanics.
, Dudley, , Chai
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On the aerodynamics of animal flight in ground effect

Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences, 1991
Abstract Flight in ground effect above a flat, smooth surface may give an animal considerable performance advantages, including a reduction in cost of transport of up to 15%, and a reduction in mechanical flight power of as much as 35%, compared with values for flight out of ground effect.
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Introduction: Animal flight

Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen, 1982
E. Frey, J. Riess
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A New Approach to Animal Flight Mechanics

Journal of Experimental Biology, 1979
ABSTRACT The mechanics of lift and thrust generation by flying animals are studied by considering the distribution of vorticity in the wake. As wake generation is not continuous, the momentum jet theory, which has previously been used, is not satisfactory, and the vortex theory is a more realistic model. The vorticity shed
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A vortex theory of animal flight. Part 2. The forward flight of birds

Journal of Fluid Mechanics, 1979
The vortex wake of a bird in steady forward flight is modelled by a chain of elliptical vortex rings, each generated by a single downstroke. The shape and inclination of each ring are determined by the downstroke geometry, and the size of each ring by the wing circulation; the momentum of the ring must overcome parasitic and profile drags and the bird ...
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The Imitation of nature? Flapping flight and animal forms as models for human flight

History and Technology, 1995
Human flight has a dual historiography. Earlier accounts often derived from writers who had been professionally engaged in aeronautics and who also had a historical bent More recently aviation has become a subject of interest for academically‐based historians.
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Animating bird flight using aerodynamics

The Visual Computer, 1999
Balajee Ramakrishnananda, Kok Cheong Wong   +1 more
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Artificial intelligence in animal farming: A systematic literature review

Journal of Cleaner Production, 2022
Qiuju Xie
exaly  

The Development of Animal Flight

Aeronautical journal (London, England : 1897), 1912
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