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The installation accuracy of the shipborne vertical launcher and the different state parameters of the launcher’s guide rail will have different degrees of impact on the initial accuracy of the test-mounted missile. Therefore, it is of great practical significance to study the assembly error characteristics of the launcher. In this paper, the influence law of equipment installation accuracy and the influence of each component’s correlation error on assembly precision are analysed. The error law of the launching device is analysed based on mathematical statistics. At the same time, the sensitivity of the error is studied by multi-body theory method to improve the accuracy, efficiency and stability of the assembly. Through the established error sensitivity analysis model, the geometric error of the main components that have a great influence on the assembly accuracy during the assembly process of the launching device is effectively identified. The results show that the error data probability distribution of the vertical launcher conforms to the normal distribution, and the key factors of the assembly error are effectively detected, which provides a theoretical basis for the assembly precision control research.

Research on precision assembly error statistics and sensitivity based on vertical launcher model