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| Effect of Near Space Environment on Mechanical Properties of Airship Envelope Woven Materials |
| Received:August 14, 2019 Revised:September 11, 2019 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2020.01.001 |
| KeyWord:airship envelope materials near space environment elastic modulus tensile stiffness |
| Author | Institution |
| MA Rui-qiang |
National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin , China |
| WANG Chang-guo |
National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin , China |
| TAN Hui-feng |
National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin , China |
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| Abstract: |
| The paper aims to research on the mechanical properties of airship skin materials in the near space environment. According to the characteristic of the near space environment, the ground simulation experiment research scheme was developed, including the ground simulation test scheme in high-low temperature, ultraviolet and ozone environments. Then, the effect of the near space environment on the mechanical properties of the airship envelope materials was studied with polyurethane coated Nylon fabric as an example. The influence mechanism was studied by infrared spectroscopy and atomic force microscopy. Compared with that without the high and low temperature cycle, the elastic modulus increased by 11%, the biggest change of the tensile strength was no more than 5%; after 48 - 240 h of uv irradiation, the elastic modulus increased by 22% - 34%, the tensile strength changed little; after ozone aging, the elastic modulus of materials increased about 6%, and the tensile strength decreased gradually. The effect of ultraviolet on the elastic modulus of polyurethane coated Nylon fabric is greater than that of high-low temperature and ozone; but its effect on strength is significantly lower than that of high-low temperature and ozone aging; ozone aging has the greatest impact on material strength. |
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