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Solar-Cell Degradation Model for Trajectory Optimization Methods

机译：轨迹优化方法的太阳能电池退化模型

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摘要

A new model for determining solar-cell degradation has been developed in electron and proton space radiation environments. This technique is based on results derived from displacement damage dose modeling software that predicts solar-cell damage caused by high-energy particles trapped in the Van Allen radiation belts. Although damage-dose-based solar-cell models have been shown to provide acceptable accuracy, they require an unwieldy two-step computational process: 1)determining the trapped particles' energy spectra for a given orbit, and 2)determining the displacement damage dose for the integral energy spectra and a given shielding thickness. For orbit transfers, this is especially cumbersome because the process must be performed at each step along the evolving trajectory. Hence, it is impossible to integrate high-fidelity solar-cell degradation models into a trajectory optimization program that involves iterating among multiple orbital paths. The new solar-cell degradation modeling method is computationally efficient and is therefore well suited for use in low-thrust trajectory optimization programs. Numerical comparisons with the high-fidelity model demonstrate that this new method can accurately determine solar-cell degradation for a wide array of Earth orbits and low-thrust orbit transfers.
机译：在电子和质子空间辐射环境中，已经开发出一种确定太阳能电池退化的新模型。该技术基于位移破坏剂量建模软件的结果，该软件预测了范艾伦辐射带中捕获的高能粒子对太阳能电池的破坏。尽管已显示出基于损伤剂量的太阳能电池模型可以提供可接受的精度，但它们需要一个笨拙的两步计算过程：1）确定给定轨道的俘获粒子的能谱，以及2）确定位移损伤剂量对于积分能谱和给定的屏蔽厚度。对于轨道转移而言，这尤其麻烦，因为必须在沿演变轨迹的每个步骤中执行该过程。因此，不可能将高保真太阳能电池退化模型集成到涉及在多个轨道路径之间进行迭代的轨迹优化程序中。新的太阳能电池退化建模方法计算效率高，因此非常适合用于低推力轨迹优化程序。与高保真模型的数值比较表明，这种新方法可以准确地确定各种地球轨道和低推力轨道转移的太阳电池退化。

著录项

  • 来源
    《Journal of Spacecraft and Rockets》 |2019年第3期|844-853|共10页
  • 作者

    Kluever Craig A.; Messenger Scott R.;

  • 作者单位

    Univ Missouri, Mech & Aerosp Engn Dept, Columbia, MO 65211 USA;

    SRM Consulting LLC, Baltimore, MD 21228 USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
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