Generation of Atomic Oxygen Flow by a Zirconium Cathode Arc-Heater

Generation of Atomic Oxygen Flow by a Zirconium Cathode Arc-Heater

An arc-heater using a zirconium cathode was developed as an atomic-oxygen generator. With pre-mixed argon-oxygen injection, stable discharge was maintained for more than three hours, and the cathode erosion rate was as low as 1.7x10-5 g/s. The plume temperature and velocity distributions were measur...

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Veröffentlicht in:SPACE TECHNOLOGY JAPAN, THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, 2006, Vol.5, pp.27-31
Hauptverfasser: MATSUI, Makoto, IKEMOTO, Tomoyuki, TAKAYANAGI, Hiroki, KOMURASAKI, Kimiya, ARAKAWA, Yoshihiro
Format: Artikel
Sprache:jpn
Schlagworte:
Arc-Heater
Atomic Oxygen
High Enthalpy Flow
Laser Absorption Spectroscopy
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Zusammenfassung:An arc-heater using a zirconium cathode was developed as an atomic-oxygen generator. With pre-mixed argon-oxygen injection, stable discharge was maintained for more than three hours, and the cathode erosion rate was as low as 1.7x10-5 g/s. The plume temperature and velocity distributions were measured and chemical composition and total specific enthalpy was evaluated by laser absorption spectroscopy. As a result, in the center area of the plume, the degree of dissociation in oxygen was found almost 100% with the total specific enthalpy of 4.5±0.1 MJ/kg.
ISSN:1347-3832
1347-3832
DOI:10.2322/stj.5.27