摘要
基于冲压翼伞的MSD模型,采用流场、结构松耦合方法对冲压翼伞的充气过程开展数值模拟研究。通过将冲压翼伞简化为二维的伞衣剖面,分析单个伞衣剖面受到的气动力、重力和应力,并离散作用于由弹簧阻尼连接的质点上,建立了伞衣多节点模型,编写了多节点模型动力学方程组解算代码。结合流场计算得到的伞衣充气过程表面的气动力,对充气过程进行了动态仿真,初步分析了翼伞充气过程伞衣外形、流场和气动特性变化特点。
Based on the MSD model of ram-air parachute, the inflatable process of ram-air parachute was studied in the form of loosely coupled simulation. By simplifying the ram-air parachute into a two-dimensional canopy section,the aerodynamic force, gravity and stress acting on a single canopy section were analyzed, the multi-node model of the canopy was established, and the solution code of the dynamic equations of the multi-node model was compiled.The numerical simulation of ram-air parachute in inflation stage was obtained by combining the calculation of the flow field. The change characteristics of the canopy shape, flow field and aerodynamic characteristics during the ram-air parachute inflation stage were preliminarily analyzed.
作者
田似营
常浩
凌蕾
杨周
Tian Siying;Chang Hao;Ling Lei;Yang Zhou(Hiwing Aviation General Equipment Co.,Ltd.,Beijing 100074,China)
出处
《航空科学技术》
2019年第8期28-34,共7页
Aeronautical Science & Technology
关键词
冲压翼伞
MSD模型
松耦合
充气过程
数值模拟
ram-air parachute
MSD model
loosely coupled
inflation stage
numerical simulation
