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首页> 外文期刊>Journal of Spacecraft and Rockets >Hall Thruster Plume Model for Spacecraft Impingement Torque: Development and Validation
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Hall Thruster Plume Model for Spacecraft Impingement Torque: Development and Validation

机译：航天器撞击扭矩的霍尔推力羽流模型：开发与验证

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Space Systems/Loral has implemented the SPT-100 Hall effect thruster onto geostationary spacecraft for primary north-south station keeping, allowing substantial reductions in onboard propellant mass. Consideration of the spacecraft-thruster interactions is necessary when implementing electric propulsion thrusters onto communications satellites. Impingement of high-energy xenon ions on the spacecraft solar arrays and other large surfaces causes torques on the spacecraft that must be accounted for and controlled by the spacecraft control system. Space Systems/ Loral has developed and used a model to predict the impingement torques on the spacecraft, allowing proper design of the spacecraft control system. The impingement model is based on experimental current-density and ion-energy data taken during ground testing. Accommodation-coefficient values for the surfaces being investigated were based on values taken from open literature. Predictions from the plume model were compared with flight control-system data from two Russian-manufactured spacecraft. Modifications to the model were made for current density, based on correlation with the flight torque data. This paper will compare predictions based on this model with flight data from the Space Svstenis/Loral-manufactured Galaxy 28 and Thaicom 4 geosynchronous commercial spacecraft. Both spacecraft are equipped with an SPT-100 subsystem to perform north-south station keeping.
机译：Space Systems / Loral已将SPT-100霍尔效应推进器安装在对地静止航天器上，以保持南北主站的位置，从而大大减少了船上推进剂的质量。在通信卫星上安装电动推进推进器时，有必要考虑航天器与推进器之间的相互作用。高能氙离子撞击在航天器的太阳能电池阵列和其他大表面上会导致航天器上的扭矩，该扭矩必须由航天器控制系统加以考虑和控制。 Space Systems / Loral已开发并使用一种模型来预测航天器上的撞击扭矩，从而可以对航天器控制系统进行适当的设计。碰撞模型基于地面测试期间获得的实验电流密度和离子能量数据。被研究表面的调节系数值基于公开文献中的值。将羽状模型的预测结果与两个俄罗斯制造的航天器的飞行控制系统数据进行了比较。基于与飞行扭矩数据的相关性，对电流密度对该模型进行了修改。本文将基于该模型的预测结果与Svstenis /劳拉制造的Galaxy 28和Thaicom 4地球同步商业航天器的飞行数据进行比较。两种航天器均配备了SPT-100子系统，以执行南北站保持。

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