气动模型在现代气动试验设计中的应用研究

摘要

This paper briefly analyzes the advantage of Modem Design of Experiments (MDOE) contrast to One Factor At a Time (OFAT) test method, and tries to find the key influence factors of MDOE.A new design method of experiments is presented based on aerodynamic models.The research shows that aerodynamic model is one of the key elements of MDOE.In order to prove that, this paper first gives a common trigonometric series model for a kind of axial symmetry vehicle with electrical cable cover.Then, taking a certain flight vehicle as an example, this paper researches the effects of trigonometric series and response surface aerodynamic models on MDOE, according to saturation D-optimal rule.This research shows that aerodynamic model play an important role in MDOE and the new design method of experiments is effective.Some valuable conclusions have been reached.%简要比较分析了MDOE方法相对于传统OFAT方法的优势,研究了MDOE方法的关键影响因素.研究表明气动模型是现代试验设计的关键因素之一,提出基于气动模型的试验设计新方法.为此,文章研究了一类带电缆罩的轴对称飞行器的气动数学模型,并以三角级数的形式给出了模型的通用形式.以某飞行器为对象,以饱和D-最优为准则,分别采用三角级数模型和常用的响应面模型,开展了气动模型对现代试验设计的影响研究,验证了气动数学模型在现代试验设计中的重要作用以及试验设计新方法的有效性,获得了有价值的研究结果.