CAJ | 학술논문

研究了重复使用运载器(RLV)末端区域能量管理段(TAEM)三维制导轨迹在线推演算法.根据RLV当前动压、位置和航向,规划动压参考剖面和横侧向参考轨迹,采用基于高度的质点动力学方程在线推演出满足过载、动压约束以及终点动压、位置和航向要求的三维轨迹.横侧向参考轨迹规划分为2个阶段,即消除横向位置误差兼顾减小纵向位置误差阶段和消除纵向位置误差阶段,提出了组合使用3种模态消除纵向位置误差的新方法.对于三维轨迹推演,提出了采用航迹倾斜角补偿法二次推演三维轨迹的新算法,修正终点位置误差超过自动着陆(ALI)容许范围的三维制导轨迹,使误差进入容许范围.仿真计算结果显示,该三维轨迹在线推演算法具有快速、准确、对初始点位置和航向分布鲁棒性强的特点.
연구료중복사용운재기(RLV)말단구역능량관리단(TAEM)삼유제도궤적재선추연산법.근거RLV당전동압、위치화항향,규화동압삼고부면화횡측향삼고궤적,채용기우고도적질점동역학방정재선추연출만족과재、동압약속이급종점동압、위치화항향요구적삼유궤적.횡측향삼고궤적규화분위2개계단,즉소제횡향위치오차겸고감소종향위치오차계단화소제종향위치오차계단,제출료조합사용3충모태소제종향위치오차적신방법.대우삼유궤적추연,제출료채용항적경사각보상법이차추연삼유궤적적신산법,수정종점위치오차초과자동착륙(ALI)용허범위적삼유제도궤적,사오차진입용허범위.방진계산결과현시,해삼유궤적재선추연산법구유쾌속、준학、대초시점위치화항향분포로봉성강적특점.
An onboard 3-D guidance trajectory algorithm of terminal area energy management (TAEM) for reusable launch vehicle (RLV) was researched. According to initial dynamic pressure, position and heading, an onboard 3-D trajectory can be propagated following the restrictions of dynamic pressure, normal overload, final dynamic pressure, final position and final heading. Based on onboard generated reference dynamic pressure profile and lateral reference trajectory, propagation of 3-D trajectory was fulfilled by means of dynamics functions of center of mass. Lateral reference trajectory planning includes 2 steps, that is, erasing lateral position error, in which longitudinal error is reduced simulataneously, and erasing longitudinal position error. According to size of longitudinal position error, 3 modes of trajectories were used to erase it by a set of logical procedures. In 3-D trajectory propagation stage, if the final position of trajectory generated by 3-D propagation exceeds the allowable scope, the path angle was compensated and the 3-D trajectory was propagated once more to generate an eligible trajectory. The simulated results show that the trajectory algorithm can propagate a 3-D guidance trajectory fast, exactly and has strong robustness in the distributions of initial position and heading.