飞机带外挂构型的变刚度颤振特性计算方法研究

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关键词：飞机带外挂状态；变刚度颤振计算;颤振风洞试验 中图分类号： V215.3+4 文献标志码：A DOI：10.11776/j.issn.1000-4939.2026.02.006 文章编号：1000-4939（2026）02-0310-14 CSTR：32414.14. cjam. issn. 1000-4939.2026.02.006

Study on variable stiffness flutter calculation method of aircraft with stores

SHENEnnan1，DAI Yaguang1，GUO Tongqing²，GAO Yidi1，WANGBiao¹

（1.Shenyang Aircraft Design and Research Institute of AVIC，11OO35 Shenyang，China; 2. College of Aerospace Engineering，Nanjing Universityof Aeronautics and Astronautics，21oo16 Nanjing，China）

Abstract：The fluter characteristics of aircraft with stores，including the flutter characteristics of low speed and transonic speed，need to be studied in detail.The flutter calculation method based on panel method has some limitations in analyzing flutter characteristics of aircraft with stores without considering the aerodynamic efects and the nonlinear effects of transonic aerodynamic.In order to consider the fluter characteristics of aircraft with stores and the influence of transonic nonlinearity，a variable stiffness fluter calculation method based on computational fluid dynamics（CFD）is generated.Based on the variable stiffness flutter calculation method，the symmetric and antisymmetric flutter characteristics of diferent Mach states at low speed and transonic speed are studied，and the fluter critical points are obtained and verified by the scaled model wind tunnel test. Compared with the experimental results of low-speed flutter wind tunnel，the results of the CFD-based fluter calculation is closer than those of the panel method.The results of transonic fluter wind tunnel test agree well with the results of CFD flutter calculation.The CFD-based flutter calculation method can effctively simulate the flutter characteristics of the aircraft with stores well and can be used for engineering calculation.

Key Words：aircraft with stores；variable stiffess flutter calculation；flutter wind tunnel test

颤振属于动气动弹性问题，它是由于空气动力、弹性力和惯性力间的相互作用引起的一种动不稳定问题。（剩余10232字）