| 动态过程的飞艇排气特性分析 |
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| 引用本文： | 苗景刚,周江华,杨新.动态过程的飞艇排气特性分析[J].宇航学报,2016,37(2):153-158. |
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| 作者姓名： | 苗景刚 周江华 杨新 |
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| 作者单位： | 1.中国科学院光电研究院，北京100094；2. 中国科学院大学，北京100049 |
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| 基金项目： | 装备预先研究项目（61501010206B） |
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| 摘 要： | 在体积可变的情况下，针对一次排气过程中压差和艇囊体积的动态变化，利用伯努利方程和气体状态方程，揭示了飞艇的排气特性，即压差的平方根随时间线性下降。进而提出一种排气阀效率和艇体变形的实验方法，可在飞艇集成测试中同步完成。试验校验了飞艇的排气特性，且飞艇体积变形率与压差成正比，排气阀效率与标定结果一致。本文的结果可为飞艇总体设计、压力和浮力控制提供参考。
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| 关 键 词： | 平流层飞艇 压力控制 排气效率 艇体变形 |
| 收稿时间： | 2015-03-04 |
Analysis of Exhaust Characteristics for Airships in Dynamic Process |
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| MIAO Jing Gang,ZHOU Jiang Hua,YANG Xin.Analysis of Exhaust Characteristics for Airships in Dynamic Process[J].Journal of Astronautics,2016,37(2):153-158. |
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| Authors: | MIAO Jing Gang ZHOU Jiang Hua YANG Xin |
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| Institution: | 1. Academy of Opto Electronics, Chinese Academy of Science，Beijing 100094， China；
2. University of Chinese Academy of Science，Beijing 100049，China |
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| Abstract: | Under the condition of the variable volume, the dynamic changes of the envelop volume and the differential pressure are analyzed by using Bernoulli equation and gas state equation. The result reveals that the square root of the differential pressure is linearly declined over the time. A kind of experimental method of valve efficiency and envelop deformation rate is put forward, which can be finished in integration test of the airship. Experimental result verifies the exhaust characteristics of the airship, meanwhile shows that the airship envelop deformation rate is proportional to the differential pressure, and the valve efficiency is consistent with the calibration result. The result of this paper can provide a reference for the airship overall design as well as pressure and buoyancy control. |
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| Keywords: | Stratosphere airship Pressure control Exhaust efficiency Airship envelop deformation |
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