4) The two-level optimization method based on the surrogate model is applied to aerodynamic design optimization of aircraft family. A regional aircraft family is used as an example to illustrate aerodynamic design optimization of aircraft family.
4)针对飞机族的气动优化设计问题,以一支线客机族机翼气动外形设计优化问题为例,应用基于代理模型的二级优化方法,研究了一种飞机族气动外形的优化方法,为飞机族气动外形设计提供了一种有效的优化设计方法。
参考来源 - 基于模块化通用平台策略的飞机族设计优化方法On the base of the research works, the specification for aerodynamic design of the welding type volute was summarized.
在以上工作的基础上，总结出影响矩形蜗壳气动性能的三个几何参数，同时制定出《焊接式排气蜗壳气动设计规范》。
参考来源 - 离心压缩机焊接式蜗壳流动分析与优化研究There are also Quasi-3D and 3D aerodynamic design computations of a low-pressure turbine with 4 stages by use of the platform.
利用该涡轮气动计算软件平台,进行了低压四级涡轮准三元与全三元气动设计计算。
参考来源 - 涡轮气动设计软件平台的开发与应用·2,447,543篇论文数据，部分数据来源于NoteExpress
They can be faster than you might think, thanks to their aerodynamic design.
它们可以速度比你想象的，它们的气动设计的感谢。
The neglect of density flow ratio effect can lead to errors in aerodynamic design.
如不注意密流比效应，可能导致设计错误。
Some discussion about aerodynamic design of last stage blade of large steam turbine has been given basing on the result of S_2 design calculation.
结合长叶片级S_2流面设计问题的计算结果对大功率汽轮机长叶片气动设计进行了初步的探讨。
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