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Parametric study of aircraft response due to wake vortex encounter

机译:尾涡相遇对飞机响应的参数研究

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A simulation-based tool which creates mathematical functions that statistically model aircraft responses during various user-selectable wake encounters is presented. A wake vortex is created as a result of aircraft wings moving through the viscous air. The methods currently available to minimize the influence of wake vortices on the trailing aircraft can often impact airport capacity. As such, it is of interest to quantify the effect of different size wakes at different encounter geometries and with different aircraft types, flight configurations, speeds, and altitudes. By collecting simulation results generated using a high-fidelity computational-fluid-dynamics-based aircraft flight model combined with industry, government, and academic wake models, numerous encounter aircraft responses (e.g., pitch, roll, Gs, altitude deviation, etc.) can be calculated. Using the multi-variable least squares method, closed-form mathematical formulas can then be generated from the simulation results to allow for the calculation of other wake encounter situations. This paper presents the preliminary design and gives results from the simulation tool and the associated post-processing for generation of the wake encounter equations and their aircraft-type-specific coefficients. A simple case study is then presented to demonstrate some typical results.
机译:提出了一种基于仿真的工具,该工具创建了数学函数,可以在各种用户可选的尾波遭遇期间对飞机的响应进行统计建模。由于飞机机翼在粘性空气中移动而产生了尾流涡流。当前可用的使尾流涡流对拖曳飞机的影响最小化的方法通常会影响机场的容量。因此,关注量化在不同的遭遇几何形状以及不同的飞机类型,飞行配置,速度和高度下不同大小的尾迹的影响。通过收集使用基于高保真计算流体动力学的飞机飞行模型并结合行业,政府和学术苏醒模型生成的模拟结果,许多遇到的飞机响应(例如,俯仰,侧倾,重力,高度偏差等)可以计算出来。使用多变量最小二乘法,可以从仿真结果中生成封闭形式的数学公式,以便计算其他遇到尾声的情况。本文介绍了初步设计,并给出了仿真工具的结果以及相关的后处理,以生成尾流遭遇方程及其特定于飞机类型的系数。然后提出一个简单的案例研究,以证明一些典型的结果。

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