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Lidar measurement of B747 wakes: observation of a vortex within a vortex

机译:B747唤醒的激光雷达测量:观察漩涡中的漩涡

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Measurements of aircraft wake vortices obtained by laser radar techniques at London heathrow Airport have revealed many interesting features of vortex structure. Notably, the vortices from Boeing 747 aircraft are shown to contain an intense, narrow-core vortex embedded within a larger co-rotating diffuse vortex. We propose an empirical 'double-dispersion' model consisting of the linear superposition of two concentric Dispersion functions. This new model provides a good description of the B747 vortex, and should therefore be Applicable in simulations of aircraft encounters with B747 vortices.
机译:在伦敦希思罗机场通过激光雷达技术获得的飞机尾流涡流的测量揭示了涡流结构的许多有趣特征。值得注意的是,波音747飞机的涡流显示包含一个强的窄核涡流,该涡流嵌入较大的同向旋转扩散涡流中。我们提出了一个由两个同心色散函数的线性叠加组成的经验“双色散”模型。这个新模型很好地描述了B747涡流,因此应适用于模拟与B747涡流相撞的飞机。

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