| In the modern ground war, the performance and defense ability of armored car are improving. Antitank ammunition is faced with flinty challenge, then target sensitive projectile of LMLRS (Long range Multiple Launch Rocket System) emerge as the times require. It is an anti-armor ammunition with characteristic of long range, high precision, great power, and high cost-effectiveness. The paper take the subject of precision test technology of target sensitive projectile of LMLRS as the study background. The ballistic characteristics of the target sensitive projectile are analyzed in this paper.The whole flight process of the target sensitive projectile, which is from rocket flick to stable scanning of rotary umbrella is studied in this paper. The ballistic model of projectile cartridge separated from rocket is established. The rigid body dynamics model of projectile cartridge with big attack angle flying and umbrella-projectile system ejection is developed. The dynamics model of rigid body and particle of drawing of umbrella-projectile system is presented. The analysis expression of the biggest pull is educed. A dynamics model of puffing segment and speed-down segment and stable scanning segment is established by using Newton-Euler method and Kane method, and the corresponding codes are programmed. The ballistics data of target sensitive projectile are simulated. The results of simulation and test have good agreement and the model and program are validated. Analysis expression of the stable scanning angle is presented, which is compared and validated with numerical results. The influence that all parameters to major tactics guide line are analyzed, and the valuable results and conclusions are presented. The influence rule is summarized.The study results in this paper provide theories basis and technology support for precision test technology of target sensitive projectile of LMLRS, and also provide reference value for general design of target sensitive projectile system of MLRS. |
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