Research on the simulation of large airbag gunpowder inflation tests

DOI:	10.11809/bqzbgcxb2023.04.007
Keywords:	large airbag; quick opening and quick closing valve; aeration test; simulated gunpowder aeration; core factor
Abstract:	The rapid inflation and development of a large airbag is achieved by the sequential ignition of three groups of gunpowder to generate inflation gas. This paper carries out an airbag inflation and development test method, which uses a large volume of compressed air as the air source and a high response quick opening and quick closing valve as the inflation control unit. Through the analysis and research of this inflation and development process and the test data at the air inlet, the core factors and the data indicators for evaluating the rapid inflation and development function of the airbag, as well as other related factors and their data are obtained. Taking the core factor data indicators as the design goal, through theoretical calculation and repeated experiments, this paper obtains the parameter values such as gas source pressure, accumulator pressure, throttle valve opening as well as opening and closing time of the quick opening and quick closing valve. Then, these values are compared with the gunpowder ignition and inflation data. The results show that the core factor data of the two test methods are highly consistent, with deviations ranging from 0% to 8.3%. The cost of the new test scheme is only 5% of the original method, and the efficiency increases by 8 times.
Issue:	Vol. 44 No. 4 (2023)
Published:	2023-04-28
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