Proceedings of the Korean Society of Propulsion Engineers Conference (한국추진공학회:학술대회논문집)
- 2004.03a
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- Pages.665-670
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- 2004
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- 1975-342X(pISSN)
Study on the Fundamental Technologies of ATREX Engine
- Sato, Tetsuya (Japan Aerospace Exploration Agency) ;
- Kobayashi, Hiroaki (Japan Aerospace Exploration Agenc) ;
- Tanatsugu, Nobuhiro (Japan Aerospace Exploration Agency)
- Published : 2004.03.01
Abstract
This paper reviews the latest studies of the expander cycle Air Turbo Ramjet engine (ATREX) conducted in JAXA. First, a system analysis including the vehicle and trajectory was conducted to optimize the engine cycle and turbo-machine configuration. We selected the precooled turbo-jet cycle for a prototype engine using the near term technologies. Second, a system ground-firing test was conducted to verify a defrosting system for the precooler. Methanol injection with its particles atomization could compensate 80 % of pressure loss caused by the frost. Thirdly, a feasibility of carbon/carbon composites for the engine components was investigated by making complex shapes such as a heat exchanger and a plug nozzle. Basic technologies on the gas leakage, the junction and bonding were also studied. The end of the paper, some basic studies such as wind tunnel tests of a new type air inlet and a plug nozzle are described.