| Citation: | XIE Rongzhang, SU Sanmai, YANG Henghui, et al. Load characteristics of thrust reverser based on fluid-structure coupling method[J]. Journal of Aerospace Power, 2023, 38（10）：2460-2472 doi: 10.13224/j.cnki.jasp.20210740
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The load characteristics of the thrust reverser are the basis of the strength design of its kinematic mechanism and drive actuator, in which the calculation of the aerodynamic load and stress distribution on the blocker door is the core. Taking the cascade thrust reverser as the object, the overlapping grid method was used to achieve the movement of the boundary grid of the translating sleeve and blocker door components, at the same time, the data mapping and exchange relationship of the fluid-structure coupling interface was formed in the STAR-CCM+ software environment. Based on these, the fluid-structure coupling numerical analysis model of the thrust reverser was established. The two dynamic processes of the thrust reverser normal opening during landing and emergency opening during takeoff were simulated. Results showed that with the rotation of the blocker door, the aerodynamic load and equivalent stress on the blocker door increased rapidly, and reached the maximum near the rotation angle of 50°. Moreover, the maximum aerodynamic load on the blocker door was more than 3 times of the normal opening process when the thrust reverser was opened under emergency termination takeoff state.
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