双气室气囊缓冲系统着陆缓冲性能分析
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摘要
双气室气囊结构兼具着陆缓冲和设备保护的双重作用,为了研究双气室气囊缓冲系统的着陆缓冲性能,本文通过有限元方法建立了双气室气囊缓冲系统的计算模型,研究了双气室气囊缓冲系统着陆缓冲过程的各项参数变化,并得到以下结论:双气室气囊结构具有较好的着陆缓冲效果,同时有效防止气囊发生内陷,避免载荷设备触地;双气室气囊结构内气囊在缓冲过程产生的超压量较小,因此为了减小缓冲系统质量,内气囊可以选用厚度较薄、强度较弱的囊体材料;采用基于有限元的数值方法可以较好反映整个缓冲过程的各项参数变化,为缓冲系统设计提供依据。
A double air chamber airbag buffer system has the dual function of landing buffer and equipment protection. In order to study the landing buffering performance of a double air chamber airbag buffer system, a finite element model of a airbag buffer system is built in this paper, the parameters of the buffer system landing buffer are calculated. The following conclusions are draw : the double air chamber airbag structure has a good effect of landing buffer, at the same time prevent the airbag from insinuation effectively, and avoid load equipment touching the ground.The overpressure of inner airbag during the buffer process is small, so in order to reduce the weight of the buffer system, the inner airbag can be used to choose the thin and weak capsule material. A numerical method based on the finite element method can be used to study the parameter changes of the whole buffer system, the numerical method can provide basis for the design of buffer system.
A double air chamber airbag buffer system has the dual function of landing buffer and equipment protection. In order to study the landing buffering performance of a double air chamber airbag buffer system, a finite element model of a airbag buffer system is built in this paper, the parameters of the buffer system landing buffer are calculated. The following conclusions are draw : the double air chamber airbag structure has a good effect of landing buffer, at the same time prevent the airbag from insinuation effectively, and avoid load equipment touching the ground.The overpressure of inner airbag during the buffer process is small, so in order to reduce the weight of the buffer system, the inner airbag can be used to choose the thin and weak capsule material. A numerical method based on the finite element method can be used to study the parameter changes of the whole buffer system, the numerical method can provide basis for the design of buffer system.
引文
[1] Michelle cooper, Robert Sinclair et. la. Design and testing of an airbag landing attenuator system for a generic crew return vehicle[C]//18th AIAA aerodynamic decelerator systems technology conference and seminar, 2005, AIAA2015-1616.
[2] Ben Tutt, Susannah Gill, et. al. A summary of the development of a nominal land landing airbag impact attenuation system for the orion crew module[C]//20th AIAA Aerodynamic decelerator systems technology conference and seminar, AIAA 2009-2922,Seattle, Washington, 4-7 May 2009.
[3]周强,谭百贺.可控排气式气囊着陆缓冲特性研究[J],浮空器研究, 2017, 11(4):26-29.
[4]李建阳,王红岩,等.自充气式气囊缓冲特性试验研究[J],振动与冲击, 2014, 33(4):119-123.
[5]牛四波,王红岩,等.重装回收系统双气室气囊缓冲特性分析[J],振动与冲击, 2012, 31(10):74-78.
[2] Ben Tutt, Susannah Gill, et. al. A summary of the development of a nominal land landing airbag impact attenuation system for the orion crew module[C]//20th AIAA Aerodynamic decelerator systems technology conference and seminar, AIAA 2009-2922,Seattle, Washington, 4-7 May 2009.
[3]周强,谭百贺.可控排气式气囊着陆缓冲特性研究[J],浮空器研究, 2017, 11(4):26-29.
[4]李建阳,王红岩,等.自充气式气囊缓冲特性试验研究[J],振动与冲击, 2014, 33(4):119-123.
[5]牛四波,王红岩,等.重装回收系统双气室气囊缓冲特性分析[J],振动与冲击, 2012, 31(10):74-78.