Operating Conditions of Stable Rotating Detonation

2015 Fiscal Year Final Research Report

• 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
• Keywords: デトネーション / 推進機関 / 衝撃波

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.

Free Research Field

燃焼工学、航空宇宙工学