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首页> 外文期刊>Journal of Spacecraft and Rockets >Modeling, Simulation, and Validation of Plume Impingement Effects on the Cygnus Spacecraft
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Modeling, Simulation, and Validation of Plume Impingement Effects on the Cygnus Spacecraft

机译：天鹅座飞船撞击撞击的建模，仿真和验证

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摘要

The Cygnus spacecraft has been delivering cargo to the International Space Station since January 2014. Among some of the unique design features, the spacecraft propulsion subsystem contains a number of 7 lbf monopropellant thrusters that provide the necessary control and delta velocity for the vehicle. Because of the thrusters locations and orientations relative to the spacecraft structures and components, plume impingement effects are inherently associated with their use. Some of these effects deal with the introduction of disturbances that must be accurately characterized in order to design a robust control system. A high-fidelity numerical technique is used to analyze and evaluate the induced forces and moments imparted on the spacecraft surfaces by the plume impingement. This technique uncouples the continuum and rarefied flow regimes at an appropriate breakdown surface to produce a solution for the entire flowfield. Furthermore, a data collection campaign consisting of ground and onorbit experiments is carried out jointly with the modeling and simulation effort. These component- and vehicle-level tests assess the accuracy of the modeling predictions. This paper presents and discusses the steps in the model generation and analysis execution, as well as the results from the validation performed.
机译：自2014年1月以来，天鹅座飞船一直在向国际空间站运送货物。在一些独特的设计功能中，飞船推进子系统包含许多7 lbf单推进推进器，可为飞行器提供必要的控制和速度变化。由于推进器相对于航天器结构和部件的位置和方向，羽流撞击效应与其使用有着内在的联系。这些影响中的一些影响了干扰的引入，必须对其进行准确表征，以设计出强大的控制系统。高保真数值技术用于分析和评估羽流撞击在航天器表面上产生的感应力和力矩。这项技术在适当的击穿面上解开了连续流和稀疏流，从而为整个流场提供了解决方案。此外，由地面和在轨实验组成的数据收集活动与建模和仿真工作一起进行。这些零部件和车辆级别的测试评估了建模预测的准确性。本文介绍并讨论了模型生成和分析执行的步骤，以及执行的验证结果。

著录项

  • 来源
    《Journal of Spacecraft and Rockets》 |2018年第2期|427-436|共10页
  • 作者

    Bermudez Luis M.; Barnhart Kevin J.; Brunner Christopher W.;

  • 作者单位

    Orbital ATK, Syst Engn Dept, Space Syst Grp, 45101 Warp Dr, Dulles, VA 20166 USA;

    Orbital ATK, Syst Engn Dept, Space Syst Grp, 45101 Warp Dr, Dulles, VA 20166 USA;

    Orbital ATK, Control Syst Engn Dept, Space Syst Grp, 45101 Warp Dr, Dulles, VA 20166 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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