软着陆气囊缓冲特性与参数设置的理论研究

陈 帅;李 斌;温金鹏;谭德伟;杨智春

振动与冲击 ›› 2009, Vol. 28 ›› Issue (4) : 25-28.

PDF(1174 KB)
PDF(1174 KB)
振动与冲击 ›› 2009, Vol. 28 ›› Issue (4) : 25-28.
论文

软着陆气囊缓冲特性与参数设置的理论研究

  • 陈 帅,李 斌,温金鹏,谭德伟,杨智春
作者信息 +

Study on Cushioning Characteristic and Parameters Design of Soft Landing Airbag

  • Shuai, Li Bin, Wen Jinpeng, Tan Dewei,Yang Zhichun
Author information +
文章历史 +

摘要

摘 要 本文将软着陆气囊的缓冲过程分解为绝热压缩和排气释能两个过程,从热力学和刚体动力学的基本方程出发,建立了软着陆缓冲过程的理论分析模型,并给出了缓冲响应的数值计算方法。针对立式软着陆气囊的参数设置和缓冲响应估计问题,给出了固定排气口型气囊和可控排气口型气囊相关参数的设计方法,同时以一个无人机模型的软着陆回收为例进行了缓冲响应仿真。基于简化模型及缓冲过程状态参数-时间特性曲线,分析研究了未设置排气口、固定型排气口与可控型排气口气囊的缓冲特性及其应用优劣,为工程与研究人员提供了气囊尺寸估算、缓冲系统性能预测、排气口面积选择与主动控制律设计的理论依据,研究结果具有明确的工程参考价值。

Abstract

Abstract: A normal soft landing process using a gas-filled bag can be decomposed into two physical stages: the first is the adiabatical compressure of airbag, then the second is the release of landing shock energy. Based on the thermal dynamic and rigid dynamic equations, the analytical model of soft landing airbag is developed, thus a simple and quick numerical solving method of cushioning response is presented. As an example, the parameters determination method of a vertical cylinder soft landing airbag for an unmanned aircraft is proposed, and these parameters refer to the height of airbag, the bottom area of airbag and the area of vent orifices. The cushioning time history of the soft landing airbag with different types of vent orifices including no gas bleed, with a constant-area orifices and with a controllable orifices, are calculated by a Matlab program. Compraring with these simulation results, the advantages and disadvantages of different soft landing airbags are concluded, and some improvement advice on the design of a soft landing airbags are proposed to help the engineering applications.

关键词

关键词 软着陆 / 气囊 / 固定排气口 / 可控排气口 / 缓冲响应

Key words

soft landing / airbag / vent orifice / cushioning response.

引用本文

导出引用
陈 帅;李 斌;温金鹏;谭德伟;杨智春. 软着陆气囊缓冲特性与参数设置的理论研究[J]. 振动与冲击, 2009, 28(4): 25-28
Shuai;Li Bin;Wen Jinpeng;Tan Dewei;Yang Zhichun.
Study on Cushioning Characteristic and Parameters Design of Soft Landing Airbag[J].
Journal of Vibration and Shock, 2009, 28(4): 25-28

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