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| 1 | Progress in reentry trajectory planning for hypersonic vehicle显示文摘The reentry trajectory planning for hypersonic vehicles is critical and challenging in the presence of numerous nonlinear equations of motion and path constraints, as well as guaranteed satisfaction of accuracy in meeting all the specified boundary conditions. In the last ten years, many researchers have investigated various strategies to generate a feasible or optimal constrained reentry trajectory for hypersonic vehicles. This paper briefly reviews the new research efforts to promote the capability of reentry trajectory planning. The progress of the onboard reentry trajectory planning, reentry trajectory optimization, and landing footprint is summarized. The main challenges of reentry trajectory planning for hypersonic vehicles are analyzed, focusing on the rapid reentry trajectory optimization, complex geographic constraints, and cooperative strategies. | Jiang Zhao Rui Zhou Xuelian Jin | 2014 | Journal of Systems Engineering and Electronics2014，25，4： | 25 |
| 2 | Particle swarm optimization applied to hypersonic reentry trajectories显示文摘This paper presents the novel use of the particle swarm optimization(PSO)to generate the end-to-end trajectory for hypersonic reentry vehicles in a quite simple formulation.The velocitydependent bank angle profile is developed to reduce the search space of unknown parameters based on the constrained PSO algorithm.The path constraints are enforced by setting the fitness function to be infinite on condition that the particles violate the maximum allowable values.The PSO algorithm also provides a much easier means to satisfy the terminal conditions by adding penalty terms to the fitness function.Furthermore,the approximate reentry landing footprint is fast constructed by incorporating an interpolation model into the standardized bank angle profiles.Numerical simulations demonstrate that the PSO method is a feasible and flexible tool to generate the end-to-end trajectory and landing footprint for hypersonic reentry vehicles. | Zhao Jiang Zhou Rui | 2015 | Chinese Journal of Aeronautics2015，28，3： | 24 |
| 3 | 基于粒子群优化的再入可达区计算方法研究显示文摘针对升力式高超声速飞行器再入可达区计算问题,提出了一种粒子群优化(PSO)和倾侧角反转相结合的混合求解方案。为了减小待优化变量的搜寻空间,设计了一种参数化的倾侧角剖面,利用约束PSO算法求解满足再入过程约束和末端约束的最优滑翔轨迹。通过倾侧角正向和逆向反转逻辑直接生成倾侧角指令集合,进而实现高超声速飞行器再入可达区的快速估算。高升阻比再入滑翔飞行器CAV-H仿真实例表明,该混合优化求解方案易于实现且无需预估参数初值,具有良好的可操作性。 | 赵江 周锐 | 2015 | 兵工学报2015，36，9： | 13 |
| 4 | Infrared radiation characteristics of a hypersonic vehicle under time-varying angles of attack显示文摘Hypersonic vehicles emit strong infrared(IR) radiation signatures that can be treated as a detecting source for object identification and routine diagnosis. This paper is aimed at examining the intrinsic radiation characteristics of a Boost-Glide Vehicle(BGV) under the condition of various Angles of Attack(AOAs). A two-temperature model considering the thermal and chemical nonequilibrium effects is coupled with Navier-Stokes equations solved by the finite volume technique.A gas–solid conjunction heat transfer model is also added into the fluid solver to simulate the surface temperature of the vehicle. The radiative transfer equation is solved with Line of Sight(LOS)algorithm. The computational results for a Hypersonic Technology Vehicle-2(HTV-2) type vehicle show that radiances of the vehicle are strongly dependent on the surface temperature. The presence of AOA results in the significant difference of the surface temperature. Infrared radiation characteristics are also changed in intensity and spectral band due to the AOA. Simulations are performed with two time-varying AOAs. Transient results indicate that the variation of AOA does have a great effect on the infrared radiance and is closely related to observation angle, spectral band, angle size,angular velocity and time history. | Qinglin NIU Zhichao YUAN Biao CHEN Shikui DONG | 2019 | Chinese Journal of Aeronautics2019，32，4： | 10 |
| 5 | Gauss伪谱法的再入可达域计算方法显示文摘为了加快优化速度和提高优化质量,提出一种基于Gauss伪谱法的再入可达域计算方法。鉴于再入时一般采用固定的攻角剖面,将攻角作为状态变量,仅对倾侧角进行单变量寻优。优化过程中,再入纵程被视为终端约束,以获取不同纵程下的最大横程,将速度倾角视为过程约束,以消除弹道的跳跃现象。通过仿真,求解出了通用航空飞行器的再入可达域,结果与间接法的理论证明一致。 | 王涛 张洪波 李永远 汤国建 | 2016 | 国防科技大学学报2016，38，3： | 8 |
| 6 | 基于差分进化算法的再入可达域快速计算显示文摘针对高升阻比高超飞行器再入可达域计算问题,提出了基于差分进化算法和倾侧角插值相结合的混合求解方案。通过设计罚函数和适应度函数极值化将再入过程等式约束和不等式约束添加到优化指标。为了减小参数化倾侧角剖面的搜索空间,利用带约束的差分进化算法求解满足再入过程约束和终端约束的再入轨迹。在分别得到最大横向航程和最大纵向航程的倾侧角剖面后,利用插值法快速生成倾侧角指令集,进而实现再入可达域的快速计算。以高升阻比飞行器CAV-H为对象,设计仿真算例,结果表明,该混合优化求解方案易于实现且具有良好的可操作性。 | 蔺君 何英姿 黄盘兴 | 2020 | 中国空间科学技术2020，40，4： | 6 |
| 7 | 飞行器可达性问题的统一求解方法研究显示文摘针对飞行器的可达性问题,研究了可达域与可返回窗口2个子问题。前者着眼于飞行器在现有条件下对地面目标的覆盖范围,后者则更关注于飞行器在返回过程中的空间上界。对描述飞行器可达性问题的2种方法进行深入研究,提出一种统一框架下的飞行器可达性数值求解方法。通过研究与可达域相对应的终端优化问题以及与可返回窗口相对应的初值优化问题,形成了一套完整的求解流程。仿真结果表明,利用所提求解方法能够快速获得飞行器完整的可达性信息,为飞行器的总体设计、任务规划等提供设计参考。 | 乔浩 李曾浩 李新国 孙鹏 | 2017 | 弹道学报2017，29，4： | 3 |
| 8 | 基于伪谱法的再入可达域影响因素分析显示文摘再入可达域是飞行器机动能力的重要体现,可为轨迹规划与制导、着陆点选择等提供依据.为此,研究了一种基于伪谱法的可达域快速生成方法,并对可达域的影响因素进行仿真分析.将攻角、倾侧角同时作为控制量被离散化而形成非线性规划问题,并通过求解若干个不同纵程条件下的最大横程问题得到可达域.基于上述方法对影响可达域的相关因素进行仿真与分析.仿真结果表明,飞行器质量、气动参考面积、大气密度等在一定范围内不会导致可达域的变化;超出一定范围后,会对短纵程轨迹产生明显影响,影响可达域的左半部分,而基本不影响可达域的右半部分;升阻比对可达域的影响较大,其大小与可达域范围成正相关. | 李兆亭 周祥 张洪波 汤国建 | 2022 | 上海交通大学学报2022，56，11： | 1 |
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