平流层浮空器保压指标对驻空性能的影响

doi:10.7527/S1000-6893.2015.0267

Abstract

Abstract:

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.

Key words: pressure-maintenance index, ground pressure-maintenance trial, stratospheric aerostats, micro-equivalent diameter, stagnation performance

CLC Number:

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.

References

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Effect of ground pressure-maintenance index on stagnation performance of stratospheric aerostats

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