Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"bat flight"”.
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Computational Analysis of Straight and Maneuvering Bat Flight Aerodynamics
Bats have many impressive flight characteristics such as the ability to rapidly change direction, carry substantial loads, and maintain good flight efficiency. For several years, researchers have been working towards an understanding of the specific aerodynamic phenomena which relate the unique …
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From Oscillating Flat Plate to Maneuvering Bat Flight – Role of Kinematics, Aerodynamics, and Inertia
… aerodynamics, and inertia on maneuvering bat flights. At first, an ascending right turn of a H. pratti bat is investigated to elucidate on the kinematic features and aerodynamic mechanisms used to effectuate the maneuver. Deceleration in flight speed, an increase in flapping frequency, …
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Analyzing the complexity of bat flight to inspire the design of flapping-flight drones
With their exceptionally maneuverable flapping flight, bats could serve as a model for enhancing the flight abilities for future drones. However, bat flight is extremely complex and there are many engineering restrictions that prevent a flapping-flight drone from replicating the many degrees of …
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Modeling and Estimation of Bat Flight for Learning Robotic Joint Geometry from Potential Fields
… systems such as humans, fish, insects, birds and bats are often used as a basis for robotic system design. Often, these studies are conducted by recording natural motions of the system of interest using a few high-resolution, high-speed cameras. Such equipment enables the use of standard methods …
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Applications of Data-Driven Learning Models in Fluid Mechanics: Solid-Fluid Multiphase Systems and Bat Flight
… solid arrays, and (3) data-driven analysis of bat flight kinematics. First, we address the challenge of accurately predicting individual particle drag forces in dense suspensions. Meso-scale models such as CFD-DEM often rely on empirical drag correlations that neglect microscale …
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Optimizing the structure and movement of a robotic bat with biological kinematic synergies
… we present methods to optimize the design and flight characteristics of a biologically-inspired bat-like robot. Recent work has designed the topological structure for the wing kinematics of this robot; here we present methods to optimize the geometry of this structure, and to compute actuator …
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Using a ground-based lidar instrument (Echidna ®) to reconstruct three-dimensional forest structure for biophysical and ecological studies
… as a novel ecological application visualizing bat flight tracks through a reconstructed forest. I reconstruct six 50 m by 50 m forest stands of varying canopy density and species from the Sierra Nevada National Forest, California, and the Harvard Forest, Petersham, Massachusetts, using lidar …
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Collective Motion in Spatially Heterogeneous Environments
… flocking, developed an agent-based model of bat flight from experimental data, and explored a model-free classification tool for swarming datasets. In the first study, we incorporated physical violation rules to an existing canonical flocking model to understand obstacle-induced perturbations …
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Effect of frontal gusts and stroke deviation in forward flapping flight and deconstructing the aerodynamics of a fruit bat
… have on the fluid dynamics of flapping flight. The primary motivation is to better grasp the fundamental fluid phenomena driving efficient flapping flight in the Reynolds number regime of birds, bats, and man made fliers of similar scale. The CFD solver (GenIDLEST) used is a …
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Canonical Decomposition of Wing Kinematics for a Straight Flying Insectivorous Bat
Bats are some of the most agile flyers in nature. Their wings are highly articulated which affords them very fine control over shape and form. This thesis investigates the flight of Hipposideros Pratti. The flight pattern studied is nominally level and straight. Measured wing kinematics are used to …