Dual propulsive mode microthruster using a diode laser
Dual propulsive mode microthruster using a diode laser
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DOI：
10.2514/1.13221
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发表时间：
2005-11
影响因子：
1.9
通讯作者：
H. Koizumi;Takayoshi Inoue;Y. Arakawa;M. Nakano
中科院分区：
文献类型：
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作者：
H. Koizumi;Takayoshi Inoue;Y. Arakawa;M. Nakano
近年来，微航天器越来越受到研究人员的关注。研究的动机是为了降低研制和发射航天器的成本，提高微航天器星座的任务能力和冗余度。虽然几个实验室和飞行模型的1-10公斤级微型航天器已经发展，他们大多数没有推进系统。为了实现未来的微型航天器任务，如编队飞行，需要一种适合于微型航天器的小型推进系统，即微型推进器微推力器最重要的要求之一是能够同时产生低范围推力和高范围推力。例如，微型航天器对姿态控制的推力要求较低，对回转机动的推力要求较高。在编队飞行中，4个微航天器对星座的控制需要较低的推力，对编队模式的重排需要较高的推力。特别是，编队飞行不可避免地需要推进能力，尽管姿态控制是由被动系统完成的，如动量轮和磁扭矩。为了限制微型航天器的重量和尺寸，必须在相同的推进系统下满足低距离和高距离的推力要求。据我们所知，目前还没有一种单一的推进系统可以为1-10公斤级的微型航天器提供如此大范围的推力。二极管激光烧蚀微推力器和数字微推力器阵列似乎是1-10公斤级微航天器的有希望的候选者。二极管激光烧蚀微推力器使用激光束照射聚合物推进剂的表面，然后加热
Introduction M ICROSPACECRAFT have increasingly attracted the interest of researchers in recent years. The research is motivated by the need to reduce in the cost of developing and launching spacecraft and to improve in the mission capability and redundancy using microspacecraft constellations. Although several laboratory and flight models of 1–10 kg class microspacecraft have been developed, most of them do not have propulsion systems.1−3 To enable future microspacecraft missions, such as formation flying, a small propulsion system suitable for microspacecraft, namely, a microthruster, is needed.4 One of the most important requirements in the microthruster is the capability to generate both lower range thrust and higher range thrust. For instance, microspacecraft require lower thrust for attitude controls and higher thrust for slew maneuvers. In the case of formation flying,4 microspacecraft need lower thrust for the constellation controls and higher thrust for the rearrangement of their formation patterns. In particular, formation flying inevitably requires propulsive capability, although attitude control is accomplished by passive systems such as momentum wheels and magnetic torqueres. To limit the weight and size of microspacecraft, it is essential to satisfy the requirement of lower and higher range thrusts with the same propulsion system. To our knowledge, there is as yet no single propulsion system that can supply such a wide range of thrust for the 1–10 kg class microspacecraft. A diode laser ablation microthruster and digital microthruster array seem to be promising candidates for the 1–10 kg class microspacecraft. The diode laser ablation microthruster5 uses laser beams to irradiate the surface of a polymer propellant, and the heated