空投着陆系统多气囊并联缓冲特性研究

摘要

In order to get cushioning characteristics of multi-airbag buffer landing system and analysis the influence of the typical external factors on cushioning characteristics,a numerical simulation model multi-airbag buffer landing system is built by using control volume method. The validity of the simulation model is verified through comparing with experimental data. According to the calculated results,the effect rules of external factors on cushioning characteristics are analyzed. The results show that the influence of the typical influence factors such as the weight of airdropping equipment,landing velocity,slave venting area,the ground obliquity and the altitude of landing point are prominent. The application scopes of multi-airbags buffer landing system have been studied,on these bases,suggestions for the using range of multi-airbags buffer landing system are provided and its cushioning characteristics are estimated.%为了计算多气囊并联着陆缓冲系统缓冲特性，分析各种因素对其缓冲特性的影响，以理想气体均匀压力模型为基础，采用控制体积法建立了多气囊并联着陆缓冲性能数值计算模型。针对某气囊缓冲系统进行了地面冲击实验，通过与实验数据对比，验证了计算模型的正确性。通过计算分析了主要参数对气囊缓冲系统缓冲特性的影响。结果表明，气囊缓冲系统缓冲特性受空投质量、着陆速度、排气口面积和着陆海拔高度等因素影响较大，必须在其允许的使用范围内才能达到理想的缓冲效果，以保证空投装备的安全。