内准字高职学报的过渡之路

内准字高职学报占高职院校学报的大多数，由于刊物没有正式刊号，学报面临社会认同度低、学报前景不明朗等诸多问题。通过从学报的内涵建设方面提出应对举措，使高职学报在内准字时期仍能发挥自身的独特作用，为过渡到公开刊物积累“财富”，并为提高学校的教学科研水平起到应有的作用。     

Next-generation electromagnetic sounding of the Moon

Electromagnetic (EM) sounding of the Moon, largely performed during the Apollo program, provided constraints on core size, mantle composition, and interior temperature. We present new analytical and numerical models that demonstrate the abilities of a next generation of EM sounding to (1) determine the electrical structure of the outermost 500 km and its lateral variability, specifically to understand the extent of upper-mantle discontinuities and the structure of the Procellarum KREEP Terrane; (2) determine the temperature and composition of the lower mantle; and (3) better constrain core size. New EM sounding need not rely on the Apollo methodology, which analyzed the magnetic transfer function between a surface station and a distantly orbiting satellite. Instead, a network of magnetometers (as few as two) can be used, or a complete sounding can be performed from a single station by measuring both electric and magnetic fields. Furthermore, in the magnetotail or lunar wake, sensors can operate from orbit, at altitudes up to the desired investigation depth. The twin-spacecraft ARTEMIS mission will test these methods and a lunar geophysical network will provide definitive results.     

姿控载荷多约束下的内外弹道联合优化

为提升固体运载器整体性能,提出一种姿控载荷多约束的内外弹道联合优化建模方法。首先,建立固体运载器内弹道计算模型和外弹道计算模型,给出大风区和级间分离的姿态控制模型以及杆状减阻装置载荷计算模型。其次,以灵敏度分析方法选择出内外弹道设计参数作为优化设计变量,将姿控摆角需求、减阻杆承载能力作为约束条件,建立以射程最优为目标的优化模型。最后,将该方法应用在某三级固体运载器的优化设计中,以差分进化算法开展仿真校验,射程提高了10.8%,并且优化结果满足姿控和载荷约束。     

固体姿轨控发动机喉栓运动时序实验设计方法

固体姿轨控发动机通过伺服机构控制喉栓位移实现推力矢量调节。为实现推力精确调控，需拟合大量地面试验数据，得出发动机喉栓位移与推力矢量间的数学模型。提出了一种面向喉栓式固体轨控发动机喉栓运动时序实验设计方法，实现了单次试验中不同燃烧室理论压强及喉栓位移组合最大覆盖，为最低试验成本下精准构建喉栓位移与推力输出模型提供训练样本。以四阀固体轨控发动机作为对象，基于零维内弹道实现燃气发生器压强求解。采用Φp准则评估喉栓位置组合遍历性，并对其进行优化，获得合理的喉栓运动方案。算例结果证明实验设计后方案在整个运动周期内几乎遍历各种组合状态，较实验设计前Φp值提升近40%，验证了本文实验设计方法在时序工程问题中的优良性能。采用实验设计方法可提高固体姿轨控发动机地面试车数据利用效率。