Volume 74, Number 1, April 2006
|Page(s)||55 - 61|
|Section||Electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid dynamics|
|Published online||17 February 2006|
A transition from ascending flight to vertical hovering: A study of a symmetric flapping model
Research Institute for Electronic Science, Hokkaido University Sapporo, 606-0812, Japan
Accepted: 31 January 2006
We study the motion of a model equipped with flapping wings under the influence of gravity (external force). This model moves in a two-dimensional fluid according to the hydrodynamic force generated by vortices separated from its wings. As a result of the interaction between the vortices and the wings, the model moves steadily in a direction against the gravity. Moreover, hovering, i.e., a steady flight staying in a particular position, can be achieved here by the effective use of vortex structures enhancing the hydrodynamic force that supports the model against gravity. The system exhibits a transition from the state with hovering to a state where hovering is impossible, as the model parameters are changed.
PACS: 47.20.Ky – Nonlinearity, bifurcation, and symmetry breaking / 47.32.cb – Vortex interactions / 47.63.-b – Biological fluid dynamics
© EDP Sciences, 2006
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.