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首页> 外文会议>Third Asia-Pacific International Symposium on Aerospace Technology >Wing deformation of an ornithopter during a flapping cycle
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Wing deformation of an ornithopter during a flapping cycle

机译：扑翼周期中一架直升机的机翼变形

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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.
机译：录像测量法被用来量化一架扑翼飞机在一系列拍动频率下的变形。在拍打过程中，由于机翼的柔韧性，空气动力和惯性载荷会导致机翼变形。因此，为了评估柔性机翼的空气动力性能，必须对变形进行量化。所采取的方法是测量位移，然后在空气动力学模型中规定这些运动，从而可以预测动态推力和升力系数。使用图像分析软件，在数个周期内跟踪放置在扑翼模型机翼上的目标。然后将位移数据用于量化机翼的动态扭曲，动态外倾角和翼展方向弯曲。发现动态扭曲是变形的主要方式。

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