| Citation: | Li Xinyang, Ren Zongjin, Liu Wei, et al. Modeling and verification of assembly angle error of force measuring components in vector thrust testing system[J]. Journal of Aerospace Power, 2026, 41（8）：20240783 doi: 10.13224/j.cnki.jasp.20240783
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To address the unknown influence mechanism of force component assembly error on test accuracy in the vector thrust testing system, a method for analyzing and modeling the influence rule of force component angle error was proposed. Firstly, the deformation direction mainly affected by the angle error was analyzed. Next, the local analytical deformation model for flexible parts was established to drive the influence law of the angular error on the force measuring components' deformations. The numerical model of the flexible part and the force measuring component was simulated and analyzed. The deformation was calculated with the angle of rotation as the variable. Angular errors on the structure’s mechanical properties were obtained. Finally, the verification experiments of flexible parts and force measuring components were carried out. The deformation properties under different angular errors were analyzed experimentally. Through theoretical analysis, numerical calculation, and experiment, it can be seen that the assembly angular error had little influence on the structural deformation performance. The maximum performance error at different angles was only 4.09%. It showed that the angular error between components can be ignored during the assembly of force measuring components. The research results provide a basis for simplifying the assembly process of the test device.
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