空气动力学学报2011，Vol.29Issue(3)：355-359,5.
建模变量对非定常空气动力数学模型的影响
The effects of variables on unsteady aerodynamic modeling
摘要
Abstract
The fuzzy logic modeling of rolling moment is established with different modeling variables, based on the wind tunnel test results of large-amplitude yawing motion and rolling motion. The effects of different variables on the model precision are analyzed. Using reasonable variables obtained from above, the unsteady aerodynamic model of yawing-rolling coupled-motion is set up by means of the fuzzy logic, and the aerodynamic coefficients are acquired.Comparing calculation results with test results, the influence of model accuracy by variables of different combination is investigated. In spite of any motion forms, the relationship between variables is the main factor that influences the model precision. Considering single freedom motion, α, β, ωy (ωx) should be selected as modeling variables; likewise, α, β, ωx, ωy regarded as modeling variables are better than others for coupled-motion.关键词
建模变量/数学模型/非定常气动力/相关性Key words
modeling variables/ mathematic model/ unsteady aerodynamic/ relationship分类
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杨勐,黄达..建模变量对非定常空气动力数学模型的影响[J].空气动力学学报,2011,29(3):355-359,5.基金项目
国家自然科学基金(11072111) （11072111）
