Canonical description of wing kinematics and dynamics for a straight flying insectivorous bat (Hipposideros pratti).

ABSTRACT: Bats, with highly articulated wings, are some of the most agile flyers in nature. A novel three-dimensional geometric decomposition framework is developed to reduce the complex kinematics of a bat wing into physical movements used to describe flapping flight: namely flapping, stroke plane deviation and pitching, together with cambering and flexion. The decomposition is combined with aerodynamic simulations to investigate the cumulative effect of each motion on force production, and their primary contribution to the unsteady vortex dynamics. For the nearly straight and level flight of Hipposideros pratti, results show that the flapping motion by itself induced a moderate drag and lift. Stroke plane deviation increased lift, and nullified the drag. With the inclusion of the pitching motion i

SUBMITTER: Sekhar S 

PROVIDER: S-EPMC6592571 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature