To resolve the problem of low terminal velocity of high and long-range ballistic missiles,combiningthe application of a double-pulse solid rocket motor in air defense missiles,this study analyzed the influence of thrust of the solid rocket motor and ignition interval of the two-stage engine on the terminal velocity of a high and long-range ballistic missile.Focusing on maximizing the terminal velocity of air defense missiles on highand long-rangetrajectories,the thrust and ignition interval of the double-pulse solid rocket motor were optimized using the improved Classified Chemical Reaction Optimization(CCRO)algorithms established in this study.Finally,the optimal energy distribution scheme for the motorenhancing the missile's terminal velocity was achieved.
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