Improvement of performance of the precooled cycle engine spoiled by icing

Kenya Harada, Tatsuya Kimura, Tetsuya Sato, Nobuhiro Tanatsugu

研究成果: Paper査読

3 被引用数 (Scopus)

抄録

The effectiveness of a method to improve the precooler performance under frosting condition was investigated by experiments on a sub-scale heat exchanger model. Addition of a methanol proved to be most effective compared with other possible substances in both cases of lower and higher cooling wall temperature than its melting point. Then the effectiveness of the methanol addition was ascertained for the practical condition that means the same tube configuration and flow velocity as the precooler designed for the ATREX engine firing test model. The result showed that the addition of the same quantity as the water vapor could restrain the frost layer from choking the flow in the duration of 300 seconds, which is sufficient time for precooler operation. The required methanol mass along the ATREX engine flight path was estimated to be less than 3% of fuel hydrogen on board. Accordingly, the method came to be promising candidate for practical application.

本文言語English
DOI
出版ステータスPublished - 2001
外部発表はい
イベント10th AIAA/NAL-NASDA-ISAS International Space Planes and Hypersonic Systems and Technologies Conference 2001 - Kyoto, Japan
継続期間: 2001 4 242001 4 27

Conference

Conference10th AIAA/NAL-NASDA-ISAS International Space Planes and Hypersonic Systems and Technologies Conference 2001
国/地域Japan
CityKyoto
Period01/4/2401/4/27

ASJC Scopus subject areas

  • 宇宙惑星科学
  • 航空宇宙工学
  • 制御およびシステム工学

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