气囊排气口开启控制方式试验研究
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摘要
排气式气囊的排气口开启控制方式一般可以分为压力控制和加速度控制等两种。为研究排气口开启控制方式对气囊缓冲特性的影响,设计了两种排气控制式气囊,建立了回收载荷-气囊系统室内跌落试验平台,并对两种排气控制方式气囊进行跌落试验。试验结果表明,设计的加速度开关工作可靠,加速度控制式气囊实现了两侧排气口同时打开;在带倾角跌落时,加速度控制式气囊的着陆稳定性较好;随着加速度控制式气囊加速度开关阈值的增大,气囊排气口开启时机越晚,排气口开启之前气囊吸收更多的能量,导致气囊内压和冲击加速度增大。
Vented airbags vent opening control modes can generally be divided into two types of pressure control and acceleration one. Here, in order to study effects of vent opening control modes on airbags buffer features, these two control types of airbags were designed, and the recovery load-airbag system indoor drop test platform was built. Drop tests were conducted for two types of airbags. The test results showed that the designed acceleration switches work reliably, acceleration controlled airbags realizes vents in two sides being opened simultaneously; when dropping with inclination, the landing stability of acceleration controlled airbag is better; with increase in the threshold of acceleration switch of acceleration controlled airbag, the later the airbag vent opening, the more energy the airbag absorbs before its vent opening, these cause airbag internal pressure and impact acceleration to increase.
Vented airbags vent opening control modes can generally be divided into two types of pressure control and acceleration one. Here, in order to study effects of vent opening control modes on airbags buffer features, these two control types of airbags were designed, and the recovery load-airbag system indoor drop test platform was built. Drop tests were conducted for two types of airbags. The test results showed that the designed acceleration switches work reliably, acceleration controlled airbags realizes vents in two sides being opened simultaneously; when dropping with inclination, the landing stability of acceleration controlled airbag is better; with increase in the threshold of acceleration switch of acceleration controlled airbag, the later the airbag vent opening, the more energy the airbag absorbs before its vent opening, these cause airbag internal pressure and impact acceleration to increase.
引文
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[2] 洪煌杰,王红岩,李建阳,等.空投装备气囊缓冲系统评价方法[J].机械工程学报,2015,51(4):148-154.HONG Huangjie,WANG Hongyan,LI Jianyang,et al.Research on assessment method of airbag cushion system for airdropping equipment[J].Journal of Mechanical Engineering,2015,51(4):148-154.
[3] 牛四波,王红岩,迟宝山,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.Niu Sibo,WANG Hongyan,CHI Baoshan,et al.Cushioning characteristics of double-chamber airbag for heavy equipment recovery system[J].Journal of Vivration and Shock,2012,31(10):74-78.
[4] 温金鹏,李斌,杨智春.缓冲气囊冲击减缓研究进展[J].宇航学报,2010,31(11):2438-2447.WEN Jinpeng,LI Bin,YANG Zhichun.Progess of study on impact attenuation capability of airbag cushion system[J].Journal of Astronautics,2010,31(11):2438-2447.
[5] WARRICK J C,LEE C K.Advanced airbag system for cargo airdrop[C]//16th AIAA Aerodynamic Decelerator Systems Technology Conference and Seminar,Boston:AIAA2001-2047,2001:293-303.
[6] CADOGAN D,SANDY C,GRAHNE M.Development and evaluation of the MARS pathfinder inflatable airbag landing system[J].Acta Astronautica,2002,50(10):633-640.
[7] 李建阳,王红岩,芮强,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.LI Jianyang,WANG Hongyan,RUI Qiang,et al.Tests for cushioning characteristics of a self-inflating airbag[J].Journal of Vivration and Shock,2014,33(4):119-123.
[8] COOPER M,SINCLAIR R.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,AIAA 2005-1616.
[9] 王红岩,芮强,洪煌杰,等.空投装备回收系统建模与分析[M].北京:国防工业出版社,2014.
[10] 李建阳.空降车用缓冲气囊系统环境适应性技术研究[D].北京:装甲兵工程学院,2014.
[11] 戈嗣诚,陈斐.智能气囊的冲击主动控制原理实验研究[J].宇航学报,2004,25(6):600-603.GE Sicheng,CHEN Fei.Experimental study on theory of impact active control of intelligent air bag[J].Journal of Astronautics,2004,25(6):600-603.
[12] 孙晓伟.自落式缓冲气囊设计计算的一般方法[J].中航救生,2005(4):29-31.SUN Xiaowei.General method of design calculation for self-inflating airbag[J].China Aeronautical & Astronautical Life-support,2005(4):29-31.
[13] 温金鹏.气囊缓冲动力学问题研究[D].西安:西北工业大学,2011.
[14] 李建阳,王红岩,芮强,等.空投缓冲气囊有限元模型修正方法[J].兵工学报,2015,36(4):752-757.LI Jianyang,WANG Hongyan,RUI Qiang,et al.Finite element model updating method of airdrop airbag[J].Acta Armamentarii,2015,36(4):752-757.
[15] 王亚伟,杨春信,柯鹏.货台空投系统气囊缓冲过程仿真[J].系统仿真学报,2007,19(14):3176-3179.WANG Yawei,YANG Chunxin,KE Peng.Airbag cushion process simulation for cargo airdrop system[J].Journal of System Simulation,2007,19(14):3176-3179.
[16] 温金鹏,李斌,谭德伟,等.考虑织布弹性的软着陆气囊缓冲特性研究[J].振动与冲击,2010,29(2):79-83.WEN Jinpeng,LI Bin,TAN Dewei,et al.Cushioning characteristics of a soft landing airbag with elastic fabric[J].Journal of Vibration and Shock,2010,29(2):79-83.
[17] LAUREN S S,RICHARD B T,JON H.Second generation airbag landing system for the orion crew module[C]//20th AIAA Aerodynamic Decelerator Systems Technology Conference and Seminar.Seattle:AIAA2009-2989,2009.
[18] ESGAR J B,MORGAN W C.Analytical study of soft landings on gas-filled Bags[R].Cleveland,OH:Lewis Research Center,1960.