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该文研究了由聚芳脂纤维(vectran)平纹织物为承力层、PVF膜(tedlar)为阻氦层、聚酯薄膜(mylar)为防护层的浮空器蒙皮材料氦气渗透的细观机制。首先,根据Hagen-Poiseuille定律,推导得到了承力层等效渗透率。然后,通过氦气溶解扩散模型和多层复合结构渗透模型,理论分析了各层对氦气密封性能的贡献比例,讨论了每层不同厚度对整体蒙皮材料氦气渗透率的影响,理论预测了蒙皮材料的整体氦气渗透率。最后,将实验结果与理论所得的数值进行了对比,验证了多层渗透模型的正确性。
In this paper, the effects of helium permeation on the aerostat skins, which are made of vectran plain weave fabric, tedlar, helium, are studied. View mechanism. First, based on the Hagen-Poiseuille law, the equivalent permeability of the bearing layer is derived. Then, through the model of helium diffusion and multi-layer composite structure penetration, the contribution of each layer to the helium sealing performance was theoretically analyzed. The influence of different thickness of each layer on the helium permeability of the overall skin material was discussed. Theoretical prediction The overall helium permeability of the skin material. Finally, the experimental results are compared with the theoretical values to verify the correctness of the multi-layer seepage model.