Improvement of performance of the precooled cycle engine spoiled by icing

Kenya Harada, Tatsuya Kimura, Tetsuya Sato, Nobuhiro Tanatsugu

Research output: Contribution to conferencePaper

Abstract

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.

Original languageEnglish
Publication statusPublished - 2001 Dec 1
Event10th AIAA/NAL-NASDA-ISAS International Space Planes and Hypersonic Systems and Technologies Conference 2001 - Kyoto, Japan
Duration: 2001 Apr 242001 Apr 27

Conference

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

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ASJC Scopus subject areas

  • Space and Planetary Science
  • Aerospace Engineering
  • Control and Systems Engineering

Cite this

Harada, K., Kimura, T., Sato, T., & Tanatsugu, N. (2001). Improvement of performance of the precooled cycle engine spoiled by icing. Paper presented at 10th AIAA/NAL-NASDA-ISAS International Space Planes and Hypersonic Systems and Technologies Conference 2001, Kyoto, Japan.