学术
摘 要:
通过分析摩擦层的大气运动特点，建立了中低空风场随高度的分布函数，分析了伞-弹系统从超音速初始状态减速到稳态过程中的受力环境，并推导了其三维动力学运动方程；以自由下落悬浮式侦察弹为实例，利用相关软件对在三种典型工况下的伞-弹系统有风弹道及无风弹道进行了仿真，并与该系统的实测弹道进行了对比，仿真结果具有较高的可信度，从而验证了该计算方法的可行性与实用性，可为同类问题的弹道设计提供参考。[著者文摘]
文章出处:
《弹箭与制导学报》-2007年27卷5期 -167-170页
栏目信息:
文献标识码:
A
Calculation Method Study on 3D Windiness Trajectory of Supersonic Parachute-projectile Systems
LI Guo-jie,FENG Shun-shan,CAO Hong-song,WANG Yun-feng （State Key Laboratory of Explosion Science and Technology ,Beijing Institute of Technology ,Beijing 100081 ,China）
Abstract:
By analyzing the movement feature of the atmosphere in friction layer, a distributing function adapt to the altitude of the mid-low-altitude wind field is build. The force condition of the parachute-projectile system which decelerates from the initial state of supersonic to the stable speed state is analyzed, and its dynamics equation of motion of 3D is deduced. Taking example for suspended reconnaissance missile which fall freely, using the interrelated program the windiness trajectory and no wind trajectory of the parachute-projectile system under three representative work eonditions are simulated, and the results are eontrasted with the measured trajectory. The simulated results are ereditable, thereby the feasibility and practicability of this calculation method is validated, and it could give some reference to the trajectory design of the same problems.[著者文摘]
Key words:
paraehute; wind field; windiness trajectory; no wind trajectory; numerical simulation
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