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| Thermal Characteristics Analysis of Stratospheric Airships Envelope |
| Received:September 20, 2019 Revised:November 18, 2019 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2020.01.003 |
| KeyWord:airship thermal characteristics of envelope stratosphere CFD |
| Author | Institution |
| WANG Xiao-liang |
School of Aeronautics and Astronautics, Shanghai Jiaotong University, Shanghai , China |
| XIE Wei-cheng |
School of Aeronautics and Astronautics, Shanghai Jiaotong University, Shanghai , China |
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| Abstract: |
| The paper aims to analyze the thermal characteristics of stratosphere airship envelope under different speed, and provide reference and guidance for the selection of the stratosphere airship envelope material and its in-empty performance. With the CFD method, the environment thermal model was built. The natural convection and forced convection analysis method were used comprehensively. Through the thermal analysis of envelope of general stratospheric airship, the characteristics of thermal change of envelope were obtained. It was resulted that the average temperature of helium in the airship capsule changed periodically with the thermal environment. At low airspeed of 1 m/s, the helium average temperature difference of the airship reached 46 K. The envelope maximum and minimum temperature were 180 K and 280 K, which occurred in the evening and noon respectively. The average temperature difference of helium was 29 K at 10m/s of airspeed. The maximum and minimum temperature of the envelope was 190 K and 280 K respectively. In design of airship, the influences of temperature should be taken into consideration in selection of envelope. The thermal characteristics analysis method and the conclusions can provide reference of the chance of envelope material of airship. |
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