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Optimal Guidance of Guided Projectile for Range Maximization with Boundary Condition on Fin Deployment Timing

조종날개 전개시점 경계조건을 포함한 지능화 탄약의 사거리 최대화 유도 기법

Kim, Yongjae
김용재

  • Received : 2018.11.30
  • Accepted : 2018.12.24
  • Published : 2019.01.01

Abstract

In order for a gun-launched guided projectile to glide to the maximum range, when to deploy the fin and start flight with guidance and control should be considered in range optimization process. This study suggests a solution to the optimal guidance problem for flight range maximization of the flight model of a guided projectile in vertical plane considering the aerodynamic properties. After converting the nonlinear Multi-Phase Optimal Control Problem to Two-Point Boundary Value Problem, the optimized guidance command and the best fin deployment timing are calculated by the proposed numerical method. The optimization results of the multiple flight rounds with various initial velocity and launch angle indicate that determining specific launch condition incorporated with the guidance scheme is of importance in terms of mechanical energy consumption.

Keywords

Optimal guidance;Optimal control;Guided projectile;Range maximization;Boundary condition;Mechanical energy;Cost of transport

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