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首页> 外文会议>55th International Astronautical Congress 2004 vol.13 >PERFORMANCE ENHANCEMENT THROUGH FLOW CONTROL IN COLD GAS THRUSTER NOZZLES
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PERFORMANCE ENHANCEMENT THROUGH FLOW CONTROL IN COLD GAS THRUSTER NOZZLES

机译：通过流量控制来提高冷气喷嘴的性能

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摘要

Cold gas thrusters have been used for station keeping in satellites since the beginnings of space flight in the early 1960s. Their advantage of simplicity and robustness comes at the price of performance, and because of this, cold gas thrusters have quickly been replaced by mono- or bipropellant systems, offering better performance. These systems are especially suited for large satellites, which require a relatively high thrust for stationkeeping. However, the recent interest in micro-satellites has renewed the need for small and lightweight station keeping systems. This area is perfectly suited for cold gas thrusters, as they offer better performance in low-thrust applications, than mono- or bipropellant systems can. This paper describes the development and results of a series of experiments aimed at improving the performance of cold gas thruster nozzles. The techniques used are solely aerodynamic in nature and range from optimising the geometry to boundary layer control. These experiments show the potential of improving cold gas nozzle performance, both in normal applications such as station keeping, as well as special applications such as high altitude atmospheric attitude control.
机译：自1960年代初太空飞行开始以来，冷气推进器就一直用于卫星站的维护。其简单性和坚固性的优势是以性能为代价的，因此，冷气推进器已迅速被单或双推进系统取代，从而提供了更好的性能。这些系统特别适用于大型卫星，而大型卫星需要较大的推力来保持位置。但是，近来对微型卫星的兴趣使人们对小型轻巧的站台保持系统有了新的需求。该区域非常适合冷气推进器，因为它们在低推力应用中的性能优于单或双推进剂系统。本文介绍了旨在改善冷气推进器喷嘴性能的一系列实验的进展和结果。使用的技术本质上完全是空气动力学的，范围从优化几何形状到边界层控制。这些实验显示了在常规应用（例如站位维护）以及特殊应用（例如高海拔大气姿态控制）中提高冷气喷嘴性能的潜力。

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