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  1. B200 工学部/工学研究科
  2. B200a 雑誌掲載論文
  3. 学術雑誌

Critical condition of inner cylinder radius for sustaining rotating detonation waves in rotating detonation engine thruster

http://hdl.handle.net/2237/00030378
8bb46aaf-1a90-42e9-99e5-cbec5c3a6f36
名前 / ファイル ライセンス アクション
manuscript_kawasaki.pdf manuscript_kawasaki (4.3 MB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2019-05-29
タイトル
タイトル Critical condition of inner cylinder radius for sustaining rotating detonation waves in rotating detonation engine thruster
著者 Kawasaki, Akira

× Kawasaki, Akira

WEKO 91754

Kawasaki, Akira

Search repository
Inakawa, Tomoya

× Inakawa, Tomoya

WEKO 91755

Inakawa, Tomoya

Search repository
Kasahara, Jiro

× Kasahara, Jiro

WEKO 91756

Kasahara, Jiro

Search repository
Goto, Keisuke

× Goto, Keisuke

WEKO 91757

Goto, Keisuke

Search repository
Matsuoka, Ken

× Matsuoka, Ken

WEKO 91758

Matsuoka, Ken

Search repository
Matsuo, Akiko

× Matsuo, Akiko

WEKO 91759

Matsuo, Akiko

Search repository
Funaki, Ikkoh

× Funaki, Ikkoh

WEKO 91760

Funaki, Ikkoh

Search repository
権利
権利情報 © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
キーワード
主題Scheme Other
主題 Rotating detonation engine
キーワード
主題Scheme Other
主題 Critical condition of detonation
キーワード
主題Scheme Other
主題 Detonation
抄録
内容記述 We describe the critical condition necessary for the inner cylinder radius of a rotating detonation engine (RDE) used for in-space rocket propulsion to sustain adequate thruster performance. Using gaseous C2H4 and O2 as the propellant, we measured thrust and impulse of the RDE experimentally, varying in the inner cylinder radius ri from 31 mm (typical annular configuration) to 0 (no-inner-cylinder configuration), while keeping the outer cylinder radius (ro = 39 mm) and propellant injector position (rinj = 35 mm) constant. In the experiments, we also performed high-speed imaging of self-luminescence in the combustion chamber and engine plume. In the case of relatively large inner cylinder radii (ri = 23 and 31 mm), rotating detonation waves in the combustion chamber attached to the inner cylinder surface, whereas for relatively small inner cylinder radii (ri = 0, 9, and 15 mm), rotating detonation waves were observed to detach from the inner cylinder surface. In these small inner radii cases, strong chemical luminescence was observed in the plume, probably due to the existence of soot. On the other hand, for cases where ri = 15, 23, and 31 mm, the specific impulses were greater than 80% of the ideal value at correct expansion. Meanwhile, for cases ri = 0 and 9 mm, the specific impulses were below 80% of the ideal expansion value. This was considered to be due to the imperfect detonation combustion (deflagration combustion) observed in small inner cylinder radius cases. Our results suggest that in our experimental conditions, ri = 15 mm was close to the critical condition for sustaining rotating detonation in a suitable state for efficient thrust generation. This condition in the inner cylinder radius corresponds to a condition in the reduced unburned layer height of 4.5–6.5.
内容記述タイプ Abstract
内容記述
内容記述 Available online: 11 August 2018. ファイル公開:2020-08-11
内容記述タイプ Other
出版者
出版者 Elsevier
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
DOI
関連識別子
識別子タイプ DOI
関連識別子 https://doi.org/10.1016/j.proci.2018.07.070
ISSN(print)
収録物識別子タイプ ISSN
収録物識別子 1540-7489
書誌情報 Proceedings of the Combustion Institute

巻 37, 号 3, p. 3461-3469, 発行日 2019
著者版フラグ
値 author
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