摘要
论述了国外运载火箭动力学相似模型的研究动态 ,对缩比模型设计和制造中的有关问题进行了讨论 ,对缩比模型的三维建模理论和建模方法进行了研究 ,探索了采用 NASTRAN的RBE3单元进行液体推进剂模拟 ,采用 DMAP程序语言进行了矩阵缩减和模态质量矩阵的提取 ,并以 CZ- 2 E/ A火箭缩比模型为例 ,进行了理论与试验的相关性分析。
In the paper, the latest developments in the dynamic scaled model of launch vehicle are summarized. Some problems on the design and manufacture of the scaled model are discussed. The modeling theory and techniques are studied here. The RBE3 element in NASTRAN is used to simulate the liquid propellant and a DMAP program is compiled to condense the matrix and abstract the model mass matrix. At last the correlation calculation is done between the analysis mode and test mode for CZ-2E/A scaled model rocket.
出处
《导弹与航天运载技术》
北大核心
2003年第3期6-12,共7页
Missiles and Space Vehicles
基金
国防科工委"十.五"预研课题"新一代运载火箭动特性获取技术研究"项目
关键词
整体结构
动力学特性
运载火箭
缩比模型
数学模型
相关性分析
Overall structure
Dynamic characteristics
Launch vehicle
Scaled model
Mathematics model
Correlation analysis
