单翼末敏弹扫描运动研究

稳态扫描技术是末敏弹系统研制过程中的关键技术之一.本文在分析末敏弹现有稳态扫描技术优缺点的基础上提出了一种新的技术,即用端部配重的单侧翼,也即用人为的子弹质量和空气动力的强非对称实现稳态扫描.分析了此种末敏弹系统的受力情况,建立了系统的二体运动模型,并详细讨论了此模型中约束力及约束力矩的消元化简方法,推导出了适于上机编程的标准形式的方程组,并用其编制了诸元计算程序.程序算例表明这种结构可以实现稳态扫描并用作稳态扫描装置,该动力学模型可以用于末敏弹总体及其稳态扫描装置设计的研究中.

A STUDY ON THE SCANNING MOTION OF SINGLE-FIN TARGET- SENSITIVITY- PROJECTILE

Stable scanning is one of the key items in the study of target-sensitivity projectile (TSP). On the basis of analysis of both the advantages and disadvantages of existing stable scanning techniques, the paper puts forward a new way to realize stable scanning using a tip-weighted single fin, that is, using a strongly-asymmetric mass and aerodynamic means in analyzing the system's mechanical situation, and establishes a two-body kinetic model. By discussing the method of eliminating and simplifying the restriction of force and moment in this model, the paper develops the standard-form equation set suitable for programming in a computer, and programs it. A numerical example shows that this kind of structure can realize stable scanning. So the structure can be used in stable scanning, and the kinetic model can be used in the study of TSP total design and its scanning equipment design.