Operating Conditions of Stable Rotating Detonation

• Project/Area Number: 25420849
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Aerospace engineering
• Research Institution: Yokohama National University
• Principal Investigator: Ishii Kazuhiro 横浜国立大学, 工学(系)研究科(研究院), 教授 (20251754)
• Co-Investigator(Kenkyū-buntansha): KATAOKA HIDEFUMI 横浜国立大学, 大学院工学研究科, 助教 (10548241)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000); Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2013: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
• Keywords: デトネーション / 推進機関 / 衝撃波 / 推進 / エンジン

Outline of Final Research Achievements

Effects of methods of detonation initiation and mixture supply on propagation behavior of rotating detonations have been experimentally studied using a newly developed annular combustor in which a fuel and an oxidizer are mixed internally. It is found that an initiator tube is necessary to initiate detonation in the combustor and that the supply pressure to the initiator tube needs to be higher than that of the main combustor. The outer circumference slit gives stable rotating detonation, while the swirl mixing forms inhomogeneous mixture in the tangential direction resulting in unsteady detonation.

Research Products

• [Presentation] 回転デトネーションエンジンの起動方法に関する研究 (2015)
  • Author(s): 横田篤、石井一洋
  • Organizer: 第53回燃焼シンポジウム
  • Place of Presentation: つくば
  • Year and Date: 2015-11-16
  • Int'l Joint Research
• [Presentation] A Study on Operating Conditions of Rotating Detonation Engine with Internal Mixing (2015)
  • Author(s): K. Ishii, A. Nojima
  • Organizer: 30th International Symposium on Space Technology and Science
  • Place of Presentation: 神戸
  • Year and Date: 2015-07-04 – 2015-07-10
• [Presentation] A Study on Operating Conditions of Rotating Detonation Engine (2015)
  • Author(s): Kazuhiro Ishii, Reo Murakami
  • Organizer: 29th International Symposium on Space Technology and Science
  • Place of Presentation: 神戸
  • Year and Date: 2015-06-05
  • Int'l Joint Research
• [Presentation] 内部混合型回転デトネーションエンジンの成立条件に関する研究 (2015)
  • Author(s): 野嶋新斗、石井一洋
  • Organizer: 日本機械学会関東支部第21期総会・講演会
  • Place of Presentation: 横浜
  • Year and Date: 2015-03-20 – 2015-03-21
• [Presentation] デトネーションの基礎研究から見た推進応用研究 (2015)
  • Author(s): 石井一洋
  • Organizer: 極超音速燃焼デトネーションの航空宇宙推進機への応用シンポジウム
  • Place of Presentation: 名古屋
  • Year and Date: 2015-03-04
  • Invited
• [Presentation] 回転デトネーションエンジンの安定作動条件 (2013)
  • Author(s): 野嶋 新斗、石井 一洋、村上 礼雄
  • Organizer: 第51回燃焼シンポジウム
  • Place of Presentation: 東京