【摘 要】
：
研究了航天器地面实验的相似性问题,给出了完全相似条件和近似相似度量方法.首先,应用量纲分析法推导了航天器地面实验的完全相似准则,并讨论了相似准则应用上的局限性;然后,
论文部分内容阅读
研究了航天器地面实验的相似性问题,给出了完全相似条件和近似相似度量方法.首先,应用量纲分析法推导了航天器地面实验的完全相似准则,并讨论了相似准则应用上的局限性;然后,在键合图理论的基础上,提出了一种系统状态变量的活性分析方法,并据此构建了实验模型近似相似程度的量化度量函数;最后,分别对轨道绝对运动与相对运动的模拟实验进行了相似性分析,给出了多种不同的非理想约束条件对实验相似性的影响,提出了有效的实验建议.仿真计算表明:所提出的方法可作为实验相似程度的量化判别依据,且快捷有效,对工程实验有重要参考价值.
The similarity of spacecraft ground test is studied and the exact similarity conditions and approximate similarity measure are given.Firstly, the exact similarity criterion of spacecraft ground test is deduced by using dimensional analysis method, and the limitation of application of similarity criterion is discussed Then, based on the bond graph theory, a method of activity analysis of system state variables is proposed. Based on this, a quantitative measure function of the approximate similarity of the experimental model is constructed. Finally, the relationship between absolute orbit and relative motion The simulation analysis shows that the proposed method can be used as a quantitative discriminant criterion for the similarity of experiments Based on, and efficient and effective, the engineering experiment has important reference value.
其他文献
为了满足小型无人机飞行控制系统可靠性和实时性的需要,本文以PowerPC系列微控制器MPC565为核心,结合相关外围器件共同构成了高性能小型无人机飞行控制系统。并且详细阐述了
对比分析了两种气流状态参数和两种加热情况下典型前缘部件表面热流密度的相似性,论证了利用亚声速高温燃气流加热方式进行近地空间高超声速飞行工况气动热模拟试验的可行性.
China’s iron oxides sector is an export-orientedsector whose dependence on exports exceeds50%.With impacts from the global financialcrisis,China’s export of
Recently,Gansu North Santai Chemical Co Ltd,a joint venture of CNGCLuzhou North Chemical Industries Co Ltd (40%),CNGC GansuYinguang Chemical Industry Group Co
On May 28th,Qinghai Western Magnesium Technology Co Ltd(QWMT) began work to construct a 100 000 t/a bittern to magnesiumhydroxide/magnesium oxide project with
June 5th,Yushe Chemical Engineering Inc of Shanxi province begantrial production on its 100 000 t/a caustic soda unit and 120 000 t/apolyvinyl chloride unit af
Adipic acid is mainly used to produce nylon66 salt,polyurethane and plasticizers.According to a report by SRI Consulting,in 2008 the global adipic acid capacit
Sichuan Meishan Zhongtong Silicon Technology Company Limited broke groundfor its 30 000 t/a trichlorosilane (TCS) and 12 900 t/a quartz powder project inChengm
很荣幸能被聘任为首都经济贸易大学兼职教授,实际上我只是作为一个江湖人来给同学们讲讲故事,使大家能在课堂当中得到一些江湖上真实的故事。“江湖人”用江湖“招”巧借银行
Korean leading potassium-based chemicals maker Unid Co Ltd was recentlyreported to expand the production capacity in its factory at Zhenjiangof Jiangsu provinc