窒化ジルコニウムのアーク風洞カソードへの適用

摘要

In this paper zirconium nitride has been applied for the cathode of the Arc heater wind tunnel. And 0.4 slm of air wassuccessfully flowed as the working gas with 4 slm argon gas. As a result, thermal efficiency was estimated as 40 % fromthe increase of the cooling water temperature. And the generated flow was evaluated by a laser absorption spectroscopy,targeting the excited argon. The velocity and translational temperature are deduced as 2000 m/s and 1500 K.