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Effect of ground pressure-maintenance index on stagnation performance of stratospheric aerostats
Received date: 2015-06-29
Revised date: 2015-09-28
Online published: 2015-10-09
Ground pressure-maintenance trial is a significant way to evaluate comprehensively the envelope performance, whose designing index will affect the stagnation height and time of stratospheric aerostats. A spherical pressure stratospheric aerostat is analyzed as an example to estimate real-time dynamics of helium pressure, temperature and mass in stagnation process by establishing vertical motion model, thermodynamic model and micro-damnification model of helium permeability. The relationship between ground pressure-maintenance index, stagnation height and time of stratospheric aerostats is deduced through envelope material micro-damnification equivalent diameter. Then, the effect law is summarized to provide an overall reference for the reasonable designing pressure-maintenance index by analyzing quantitatively the stagnation performance and pressure-maintenance index.
SHI Zhiguang , ZHANG Xiaoqiang , LI Jinqing , QIAN Taiyang . Effect of ground pressure-maintenance index on stagnation performance of stratospheric aerostats[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2016 , 37(6) : 1833 -1840 . DOI: 10.7527/S1000-6893.2015.0267
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