Sensitivity analysis for a type of statically stable sailcrafts

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• 作者：Zheng-Xue Li (1) lzxsat@163.com
  Jun-Feng Li (1)
  He-Xi Baoyin (1)
• 关键词：Statically stable sailcraft – ; Sensitivity – ; Solarradiation ; pressure force error – ; Mass center and pressure center errors – ; Attitude and orbit errors
• 刊名：Acta Mechanica Sinica
• 出版年：2012
• 出版时间：April 2012
• 年：2012
• 卷：28
• 期：2
• 页码：532-542
• 全文大小：646.7 KB
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• 作者单位：1. School of Aerospace, Tsinghua University, 100084 Beijing, China
• 刊物类别：Engineering
• 刊物主题：Theoretical and Applied Mechanics
  Mechanics, Fluids and Thermodynamics
  Engineering Fluid Dynamics
  Numerical and Computational Methods in Engineering
  Chinese Library of Science
  
• 出版者：The Chinese Society of Theoretical and Applied Mechanics; Institute of Mechanics, Chinese Academy of
• ISSN：1614-3116

文摘

Two types of sensitivities are proposed for statically stable sailcrafts. One type is the sensitivities of solar-radiation-pressure force with respect to position of the center of mass, and the other type is the sensitivities of solar-radiation-pressure force with respect to attitude. The two types of sensitivities represent how the solar-radiation-pressure force changes with the position of mass center and the attitude. Sailcrafts with larger sensitivities undergo larger error of the solar-radiation-pressure force, leading to larger orbit error, as demonstrated by simulation. Then as a case study, detailed formulas are derived to calculate the sensitivities for sailcrafts with four triangular sails. According to these formulas, in order to reduce both types of sensitivities, the angle between opposed sails should not be too large, and the center of mass should be as close to the axis of symmetry of the four sails as possible and as far away from the center of pressure of the sailcraft as possible.