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Energy-Optimal Control of a Submarine-Launched Cruise Missile

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Document pages: 24 pages

Abstract: A typical mission profile of submarine-launched cruise missiles begins withthe launch phase which covers the motion of the missile from the launch to thewater-exit and continues with the boost phase which lasts from the water-exitto the beginning of the cruise phase. In order to achieve the desired range ofthe launch and boost phases, efficient utilization of available energy whichcarries the missile to the beginning of the cruise phase is necessary. For thispurpose, this study presents a new approach for energy-optimal control of theunderwater and air motion of a submarine-launched cruise missile. In thisapproach, the aforementioned problem is modeled and solved as a minimum-effortoptimal control problem. Then, the effects of initial and final conditions onenergy need are investigated, and the optimal conditions that result with theminimum energy need are determined. Prior to the guidance and control designsteps, six degrees of freedom (6 DOF) motion equations are derived and thehydrodynamic and aerodynamic parameters are retrieved. The nonlinear 6 DOFmotion model is simplified and linearized before minimum-effort optimal controldesign part. Results of the designed guidance and control strategies arepresented through the nonlinear 6 DOF simulations. Finally, some comments aremade and future studies are mentioned based on theoretical and simulationstudies.

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