Vibration characteristics of airborne multiple launch rocket systems

The vibration characteristics of airborne multiple launch rocket system is very important for estimating its dynamic performance and increasing its firing dispersion. The dynamics model of airborne multiple launch rocket system is built using the transfer matrix method of multibody system , and its vibration characteristics arc studied from the aspects of theory , calculation, and test. The calculation algorithm and modal test method for vibration characteristics of rigid-flexible coupling airborne multiple launch rocket system arc developed. Based on the proposed method, the numerical simulation for vibration characteristics of an airborne multiple launch rocket system is given, and the results obtained by the simulation and modal test have good agreements, which validate the proposed method. When using this method to study the vibration characteristics of airborne multiple launch rocket systems, the global dynamic equations of system is not needed, the order of system matrix is low, and the computational speed is high.