Wing deformation of an ornithopter during a flapping cycle

摘要：

Videogrammetry was used to quantify the deformations of an Ornithopter wing at a range of flapping frequencies. During the flapping cycle, as a result of the flexible nature of the wing, the aerodynamic and inertial loads impose significant wing deformation. Thus in order to assess the aerodynamic performance of flexible wings the deformation must be quantified. The approach taken was to measure the displacements and then prescribe these motions in an aerodynamic model which allowed the predictions of the dynamic thrust and lift coefficients. Using image analysis software, targets placed on the wing of the flapping model were tracked over several cycles. The displacement data was then used to quantify the dynamic twist, dynamic camber and spanwise bending of the wing. It was found that dynamic twist is the dominant mode of deformation.

关键词： flapping flight aerodynamics modelling

作者: A. Valiyff J. Nicholls M. B. Jones

作者单位: Defence Science and Technology Organisation,Melbourne, Victoria, 3207 Australia QinetiQ, Melbourne, Victoria, 3207 Australia Air Vehicles Division, Defence Science and Technology Organisation,Melbourne, Victoria, 3207 Austral

会议类型: 国际会议

会议名称: 2011年亚太航空航天技术学术会议(APISAT 2011)

会议地点: 澳大利亚

会议语种:英文

页码: 1-10

在线出版日期: 2011-02-28（万方平台首次上网日期，不代表论文的发表时间）