منابع مشابه
Limitations on Animal Flight Performance
Flight performance seems to change systematically with body size: small animals can hover and fly over a wide range of speeds, but large birds taxi for takeoff and then fly over a narrow speed range. The traditional explanation for this is that the mass-specific power required for flight varies with speed according to a U-shaped curve, and it also scales between m° and m/, where m is body mass....
متن کاملElectric Flight – Potential and Limitations
During the last years, the development of electric propulsion systems is pushed strongly, most notably for automotive applications. For ground based transportation, the system mass is relevant, but of relatively low importance. This paper addresses the application of electric propulsion systems in aeronautics, where all systems are much more constrained by their mass. After comparing different ...
متن کاملPerformance & Limitations
One of the visual tasks adopted as an "exemplar" for techniques by the Alvey MMI-007 consortium has been the detection and identification of vehicles in natural scenes. We have adopted a knowledge-based approach to the task, which seeks to explain the 2-D image in terms of known context and known geometry of the 3-D object being identified. This approach differs markedly from the more familiar ...
متن کاملFlight mechanics and control of escape manoeuvres in hummingbirds. II. Aerodynamic force production, flight control and performance limitations.
The superior manoeuvrability of hummingbirds emerges from complex interactions of specialized neural and physiological processes with the unique flight dynamics of flapping wings. Escape manoeuvring is an ecologically relevant, natural behaviour of hummingbirds, from which we can gain understanding into the functional limits of vertebrate locomotor capacity. Here, we extend our kinematic analys...
متن کاملDevice Mismatch Limitations on Performance ofa
The performance of a Hamming Distance Classiier based on static memory cells and an analog winner-takes-all circuit depends on device matching in the various parts of the circuit. This dependence has been analyzed, leading to design criteria for choosing the device sizes and chip structure. The theoretical performance of a CMOS chip designed to operate in the subthreshold region has been compar...
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ژورنال
عنوان ژورنال: Journal of Experimental Biology
سال: 1991
ISSN: 1477-9145,0022-0949
DOI: 10.1242/jeb.160.1.71