高原条件下空投设备气囊系统缓冲过程研究

由于高原的空气密度、大气压力等与平原有较大差异,所以有必要对气囊系统的缓冲性能进行研究.由于空投中不可控因素的影响,采用实验方式进行空投设备落地过程的研究难以得到有效的结果.而且,由于实验方式花费较高,采用仿真方式具有较大优势.采用有限元方法,结合气体热力学理论,建立重型空投设备和缓冲气囊系统的有限元模型,并结合实验数据进行了验证.简要分析了空投设备落地缓冲过程的规律,进一步计算了高原条件下气囊系统的缓冲过程特点,研究结果对气囊系统的优化和设备结构改进设计具有一定的参考价值.

Cushioning process study on airbag system of on-plateau-airdropped equipments

Due that the air density and pressure on plateaus are quite different from those on plains,it is necessary to analyze the cushioning process of airbag systems.As the uncontrollable airdropping factors,the valid results can hardly be obtained from the landing process of airdropped equipments via experimental methods.In terms of cost,the simulation is more advantageous than experiment.By integrating the finite element method with aerothermodynamics,a finite element model is initially established for heavy-duty airdropped equipments and airbag systems.Afterwards,this method is verified using experimental data.Eventually,the principles of landing and cushioning processes are concisely analyzed.Furthermore,the on-plateau-cushioning process features are calculated.Therein,this approach sets a reference to airbag system optimization and structural improvement design for airdropped equipments.