論文
10kW級ICP加熱器により生成された空気プラズマ気流の 発光分光による気流特性調査
2019 年 67 巻 2 号 p. 42-48
詳細
2019 年 67 巻 2 号 p. 42-48
10kW class Inductively Coupled Plasma (ICP) heater in JAXA/ISAS was developed to evaluate heating-durability of membrane materials for inflatable reentry aeroshell. To utilize the ICP heater as an experimental facility to investigate heating-durability, it is necessary to clarify characteristics of the plasma flow generated by the ICP heater. In this study, emission spectroscopic analysis of air plasma flow which is used for heating tests of the aeroshell was conducted. Spectra of the air plasma flow at plasma heating region were acquired. Moreover, molecular temperatures were estimated based on the spectra data by a spectrum fitting method using a radiation analysis code. It was indicated that molecular temperatures of nitric oxide (NO) bands are 4200--5800K at the plasma heating region assuming the local thermal equilibrium. In addition, the experimental results qualitatively reproduced numerical simulation results obtained by computational fluid dynamics approach.
