A review of Comparison of analytical and numerical methods for investigating rocket launching platforms

The structure of the rocket launch platform vibrates from the beginning of the operation until the vibrations are completely dampened after the rocket is detached from it. These vibrations, on the one hand, cause dynamic stresses in the structure, the calculation of which is important for the design of the structure, and on the other hand, the initial conditions of the missile launch, ie the coordinates of the point of separation it changes, Their calculation helps to estimate the coordinates of where unmanned missiles hit. The effective structural method, which was the basis of the model discussed in this study, is a very powerful method in studying the vibrations of structures under moving loads, which in addition to the simplicity of the principles, has the ability to solve complex moving load problems. In this method, the reaction factor between the moving body and the structure can be easily and accurately investigated, while in other methods, such as the finite difference method, it is very laborious to do so. According to the simple principles of structural impact method, the accuracy of the model in question can be improved by considering other factors such as changes in the mass of the rocket during the launch operation as well as the flexibility of the platform under the platform In this study, using structural impact method, dynamic stresses, deformation of the launch structure at any time and also the initial conditions of rocket launch at the moment of detachment were calculated.

Keywords:

Missile launch platform , structurally effective method , Rocket mass changes , dynamic stresses.