一种机翼积冰气动系数工程估算方法  

An engineering estimation method for aerodynamic coefficients on icing airfoils

作　　者：刘通[1] 戴玉婷[1] 洪冠新[1] 

机构地区：[1]北京航空航天大学航空科学与工程学院,北京100191

出　　处：《飞行力学》2015年第5期439-442,共4页Flight Dynamics

摘　　要：建立了NACA0012翼型积冰气动数据库,探讨了一种基于多维空间广义体积的积冰气动系数估算方法。结合皮尔逊积矩相关系数分析各积冰参数与气动系数的相关性,通过忽略相关性较小的飞行因素降低模型维度,在保证精度的前提下提高计算效率。最后对多组积冰参数进行算例验证,并与试验结果和经验公式估算结果进行对比,表明该估算方法具有较高的精度和可靠性,可以有效应用于各种积冰参数下气动系数的估算。An icing aerodynamics database on NACA0012 airfoil was built up to provide an estimation method for icing aerodynamic coefficient based on multi-dimensional generalized volume. Correlations between different icing parameters and aerodynamic coefficients were analyzed through Pearson product-moment correlation coefficient. The dimension of model was reduced by ignoring flight factors of trivial effect,thus the calculation efficiency can be improved without losing accuracy. Finally,example verification was carried out for sets of icing parameters and the results were compared with both experimental results and estimated results using empirical formula. Results indicate that the estimation method in this research shows higher accuracy,which can be used for estimating aerodynamic coefficients under various icing parameters.

关 键 词：飞行安全 机翼积冰 气动系数 相关系数 工程估算 

分 类 号：V212.1[航空宇航科学与技术—航空宇航推进理论与工程] V328