Sensitivity analysis of aerodynamic parameters of stratospheric tethered balloon

ZHANG Donghui; ZHANG Taihua; CUI Yanxiang; CHEN Chen; WANG Sheng

doi:10.7527/S1000-6893.2021.25083

ACTA AERONAUTICAET ASTRONAUTICA SINICA >

2022 , Vol. 43 >Issue 5: 125083 - 125083

DOI: https://doi.org/10.7527/S1000-6893.2021.25083

Fluid Mechanics and Flight Mechanics

Sensitivity analysis of aerodynamic parameters of stratospheric tethered balloon

ZHANG Donghui ,
ZHANG Taihua ,
CUI Yanxiang ,
CHEN Chen ,
WANG Sheng

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1. Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100194, China;
2. University of Chinese Academy of Sciences, Beijing 100190, China

Received date: 2020-12-10

Revised date: 2021-01-08

Online published: 2021-02-02

Supported by

Strategic Priority Research Program of the Chinese Academy of Sciences (XDA20100200)

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Abstract

A three-dimensional model is established for a stratospheric tethered balloon. The significance of parameter sensitivity analysis from the perspectives of system optimization design and flight test characteristics is discussed. The method of parameter sensitivity analysis from the two aspects is proposed and conducted for the tether normal aerodynamic coefficient, balloon resistance coefficient, and balloon lift coefficient. The analysis results show that reduction of the normal tether aerodynamic coefficient can significantly improve the maximum safety factor of the tether in the system optimization design, meanwhile reducing the tether tension and improving the wind-resistant capability of the system in the flight test. The balloon resistance coefficient and balloon lift coefficient do not improve the maximum safety factor of the tether in the design stage, while change in the parameters will affect the safety of the cable and wind-resistant capability in the flight test.

Key words： stratospheric tethered balloon; aerodynamic parameters; sensitivity analysis; optimal design; safety factor of tether

Cite this article

ZHANG Donghui , ZHANG Taihua , CUI Yanxiang , CHEN Chen , WANG Sheng . Sensitivity analysis of aerodynamic parameters of stratospheric tethered balloon[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022 , 43(5) : 125083 -125083 . DOI: 10.7527/S1000-6893.2021.25083

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