Laser-powered heat exchanger rocket for ground-to-orbit launch
Laser-powered heat exchanger rocket for ground-to-orbit launch
复制标题
用于地面到轨道发射的激光动力热交换器火箭
DOI：
10.2514/3.23875
复制
发表时间：
1995
影响因子：
1.9
通讯作者：
J. Kare
中科院分区：
文献类型：
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作者：
J. Kare
由地面激光加热的氢燃料推进器可以产生500-800秒的比脉冲，足以在排气温度为1000-2000 K的情况下以合理的单级质量比到达地球轨道。在这种低温下，固体热交换器既便宜又高效。基于热交换器的推进器比其他激光加热发动机有一个根本的优势，那就是它是杂食性的；任何激光波长或脉冲格式均可接受。提出了一种低成本、轻量化的平面热交换器结构，它保留了脉冲固体推进剂激光推进器的大部分简洁性，并且可以允许快速开发一种发射系统，能够将有效载荷为100公斤/兆瓦的激光功率发射到低地球轨道。
A hydrogen-fueled thruster heated by a ground-based laser can produce a specific impulse of 500-800 s, sufficient to reach Earth orbit with plausible single-stage mass ratios, at exhaust temperatures of 1000-2000 K. At these low temperatures, a solid heat exchanger can be both cheap and efficient. A heat-exchanger-based thruster has a fundamental advantage over other laser-heated engines in that it is omnivorous; any laser wavelength or pulse format is acceptable. A low-cost, lightweight planar heat exchanger configuration is presented that retains much of the simplicity of pulsed solid-propellant laser thrusters, and which may permit quick development of a launch system able to launch payloads of >1 kg/MW of laser power into low Earth orbit.