Study on Inflow-Drive Valves for Pulse Detonation Engines

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  • YAMAGUCHI Hiroyuki
    筑波大学大学院システム情報工学研究科構造エネルギー工学専攻
  • MATSUOKA Ken
    筑波大学大学院システム情報工学研究科構造エネルギー工学専攻
  • YAGETA Jun
    筑波大学大学院システム情報工学研究科構造エネルギー工学専攻
  • KASAHARA Jiro
    筑波大学大学院システム情報工学研究科構造エネルギー工学専攻

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  • パルスデトネーションエンジン用入口流体駆動バルブに関する研究
  • パルスデトネーションエンジンヨウ イリグチ リュウタイ クドウ バルブ ニ カンスル ケンキュウ

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Abstract

In the present study, a dynamics model of an inflow-drive valve for pulse detonation engines (PDEs) is proposed, in which system the inflow of the valve periodically drives the valve piston. Since the inflow-drive valve needs no energy source to drive the piston, the mass flow rate divided by the valve mass is relatively large, and the response time for the mass-flow-rate change can be short. Moreover, the inflow-state condition for the stable valve operation is not restricted. The two-cylinder three-fluid type inflow-drive valve was fabricated. The maximum mass flow rate for one valve was evaluated as 6.3g/s, in which system the mass of the piston, the spring constant, and the supplied pressure were 3.8kg, 9800N, and 1.0MPa, respectively. The total mass flow rate using propellant was evaluated as 12g/s. The PDE system was constructed by using these inflow-drive valves. This system was stably operated in the frequency of 17.52Hz.

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