Thrust Generation Experiments on Microwave Rocket with a Beam Concentrator for Long Distance Wireless Power Feeding
Thrust Generation Experiments on Microwave Rocket with a Beam Concentrator for Long Distance Wireless Power Feeding
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远距离无线供电集束器微波火箭推力产生实验
DOI：
10.1016/j.actaastro.2018.01.057
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发表时间：
2018
影响因子：
3.5
通讯作者：
Keishi Sakamoto
中科院分区：
文献类型：
--
作者：
Masafumi Fukunari;Toshikazu Yamaguchi;Yusuke Nakamura;Kimiya Komurasaki;Yasuhisa Oda;Ken Kajiwara;Koji Takahashi;Keishi Sakamoto
利用1兆瓦级回旋管进行了实验，以检查波束能量推进火箭，微波火箭与波束集中器的远程无线供电。入射光束从光束传输镜系统传输。光束透射镜系统将入射光束直径扩大到240 mm，以延长瑞利长度。光束集中器接收光束并将其引导到直径为56 mm的圆柱形推进器管中。利用快速分幅相机，通过丙烯酸窗口观察了推力器中等离子体点火和电离前沿的传播。空气被用作推进剂。利用光束集中器实现了推力产生。在638 J/脉冲的输入能量下，根据推力壁处的压力历史，最大推力脉冲估计为71 mN s/脉冲。相应的动量耦合系数Cm为204 N/MW。
Experiments using a 1 MW-class gyrotron were conducted to examine a beamed energy propulsion rocket, a microwave rocket with a beam concentrator for long-distance wireless power feeding. The incident beam is transmitted from a beam transmission mirror system. The beam transmission mirror system expands the incident beam diameter to 240 mm to extend the Rayleigh length. The beam concentrator receives the beam and guides it into a 56-mm-diameter cylindrical thruster tube. Plasma ignition and ionization front propagation in the thruster were observed through an acrylic window using a fast-framing camera. Atmospheric air was used as a propellant. Thrust generation was achieved with the beam concentrator. The maximum thrust impulse was estimated as 71 mN s/pulse from a pressure history at the thrust wall at the input energy of 638 J/pulse. The corresponding momentum coupling coefficient,Cmwas inferred as 204 N/MW.