导弹与航天运载技术
導彈與航天運載技術
도탄여항천운재기술
MISSILES AND SPACE VEHICLES
2014年
4期
5-8
,共4页
张烨琛%包为民%闵昌万%张宁宁
張燁琛%包為民%閔昌萬%張寧寧
장엽침%포위민%민창만%장저저
过渡段%准平衡滑翔段%弹道优化%Legendre伪谱法
過渡段%準平衡滑翔段%彈道優化%Legendre偽譜法
과도단%준평형활상단%탄도우화%Legendre위보법
Transitional phase%Quasi-equilibrium glide phase%Trajectory optimization%Legendre pseudospectral method
分析高超声速无动力滑翔飞行器滑翔段最大射程弹道普遍存在的分段现象。根据该现象将滑翔段分为过渡段与准平衡滑翔段两段。提出基于Legendre伪谱法的弹道优化设计方法：在过渡段以其终点速度最大为优化目标对攻角进行优化；在准平衡滑翔段直接将攻角设计为最大升阻比攻角，经分析，该方法所得射程与滑翔段全程优化所得射程几乎相同。该方法简化了滑翔段射程优化问题。
分析高超聲速無動力滑翔飛行器滑翔段最大射程彈道普遍存在的分段現象。根據該現象將滑翔段分為過渡段與準平衡滑翔段兩段。提齣基于Legendre偽譜法的彈道優化設計方法：在過渡段以其終點速度最大為優化目標對攻角進行優化；在準平衡滑翔段直接將攻角設計為最大升阻比攻角，經分析，該方法所得射程與滑翔段全程優化所得射程幾乎相同。該方法簡化瞭滑翔段射程優化問題。
분석고초성속무동력활상비행기활상단최대사정탄도보편존재적분단현상。근거해현상장활상단분위과도단여준평형활상단량단。제출기우Legendre위보법적탄도우화설계방법：재과도단이기종점속도최대위우화목표대공각진행우화；재준평형활상단직접장공각설계위최대승조비공각，경분석，해방법소득사정여활상단전정우화소득사정궤호상동。해방법간화료활상단사정우화문제。
The sectioned phenomenon existed in the maximum range trajectory of hypersonic unpowered glide vehicle is analyzed. Glide phase is divided into transitional phase and quasi-equilibrium glide phase according the phenomenon. Based on the Legendre Pseudospectral method, a trajectory optimization design method is proposed--optimize the angle of attack to achieve the maximum velocity at the terminal in transitional phase, while the angle of attack is designed with maximum lift-drag ratio in quasi-equilibrium glide phase.The range calculated inthis method is the same as that of glide phase after optimization. The glide trajectory optimization problem is simplified in this method.
