基于全局灵敏度分析的侧向气动导数不确定性对侧向飞行载荷的影响

doi:10.7527/S1000-6893.2015.0264

流体力学与飞行力学

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基于全局灵敏度分析的侧向气动导数不确定性对侧向飞行载荷的影响

阮文斌, 刘洋, 熊磊

上海飞机设计研究院总体气动部, 上海 201210

收稿日期:2015-06-29 修回日期:2015-09-25 出版日期:2016-06-15 发布日期:2015-10-10
通讯作者: 阮文斌男,硕士,助理工程师。主要研究方向:民用飞机飞行载荷设计。Tel:021-20865564 E-mail:ruanwenbin@comac.cc E-mail:ruanwenbin@comac.cc
作者简介:刘洋男,硕士,工程师。主要研究方向:民用飞机飞行载荷设计。Tel:021-20865563 E-mail:liuyang6@coamc.cc;熊磊男,硕士,工程师。主要研究方向:民用飞机飞行载荷设计。Tel:021-20865559 E-mail:xionglei@comac.cc

Influence of side aerodynamic derivative uncertainty on side flight load based on global sensitivity analysis

RUAN Wenbin, LIU Yang, XIONG Lei

General Configuration and Aerodynamics Department, Shanghai Aircraft Design and Research Institute, Shanghai 201210, China

Received:2015-06-29 Revised:2015-09-25 Online:2016-06-15 Published:2015-10-10

摘要/Abstract

摘要：

考虑飞行载荷计算中使用的气动导数存在不确定性,利用基于方差的全局灵敏度分析(GSA)方法,结合偏航机动的动力学模型,分析了侧向气动导数不确定性对侧向飞行载荷的影响。以某型飞机为例,运用该方法得到侧向气动导数的全局灵敏度排序。结果表明:侧滑角、阻尼贡献的垂尾侧向载荷及垂尾侧向总载荷受全机侧力系数对侧滑角导数的影响最大,受航向静稳定导数及方向舵操纵效能的影响次之;方向舵偏度贡献的垂尾侧向载荷只受全机侧力系数对方向舵偏度导数的影响;无尾飞机侧向载荷主要受航向静稳定导数、方向舵操纵效能及无尾飞机侧力系数对侧滑角导数的影响;偏航阻尼导数基本不影响各侧向飞行载荷。同时也验证了方法的有效性,对提高飞行载荷的计算精度有一定的指导意义。

关键词: 全局灵敏度分析, 不确定性, 气动导数, 飞行载荷, 方差, 偏航机动

Abstract:

Considering the uncertainty of aerodynamic derivative used in flight load calculation, combining with the equations of motion for yaw maneuver, the influence of side aerodynamic derivative uncertainty on side flight load is investigated, utilizing the variance-based global sensitivity analysis (GSA) method. According to the parameters of a certain aircraft, the ranking results of GSA are obtained using the proposed method. The results show that:the derivative of side force coefficient with respect to angle of sideslip has the most significant influence on the vertical tail side load due to sideslip and damping, as well as total vertical tail side load, besides the influences of weathercock stability derivative and rudder control effectiveness are also significant; the vertical tail side load due to rudder is only influenced by the derivative of side force coefficient with respect to rudder deflection; tail-off side load is mainly influenced by weathercock stability derivative, rudder control effectiveness and the derivative of tail-off side force coefficient with respect to angle of sideslip; yaw damping derivative has almost no influence on all side loads. Meanwhile, the example verifies the validity of the method, which is of benefit to promoting the calculation precision of flight load in aircraft design.

Key words: global sensitivity analysis, uncertainty, aerodynamic derivative, flight load, variance, yaw maneuver

中图分类号:

V212.11

阮文斌, 刘洋, 熊磊. 基于全局灵敏度分析的侧向气动导数不确定性对侧向飞行载荷的影响[J]. 航空学报, 2016, 37(6): 1827-1832.

RUAN Wenbin, LIU Yang, XIONG Lei. Influence of side aerodynamic derivative uncertainty on side flight load based on global sensitivity analysis[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2016, 37(6): 1827-1832.

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基于全局灵敏度分析的侧向气动导数不确定性对侧向飞行载荷的影响

Influence of side aerodynamic derivative uncertainty on side flight load based on global sensitivity analysis

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