Rotordynamic Fluid Forces of Floating Ring Seal for Rocket Turbopump

• 資料種別: 文書・図像類
• タイトル: Rotordynamic Fluid Forces of Floating Ring Seal for Rocket Turbopump
• 著者・編者: 弘松, 純; 内海, 政春; 高田, 仁志; 長尾, 直樹; 江口, 真人; 井上, 秀行; Hiromatsu, Jun; Uchiumi, Masaharu; Takada, Satoshi; Nagao, Naoki; Eguchi, Masato; Inoue, Hideyuki
• 著者標目: 弘松, 純; 内海, 政春; 高田, 仁志; 長尾, 直樹; 江口, 真人; 井上, 秀行; Hiromatsu, Jun; Uchiumi, Masaharu; Takada, Satoshi; Nagao, Naoki; Eguchi, Masato; Inoue, Hideyuki
• 出版事項: 宇宙航空研究開発機構(JAXA)
• 出版年月日等: 2013-10-31
• 出版年（W3CDTF）: 2013-10-31
• タイトル（掲載誌）: 宇宙航空研究開発機構研究開発資料 = JAXA Research and Development Memorandum
• 巻号年月日等（掲載誌）: JAXA-RM-13-008E
• 掲載巻: JAXA-RM-13-008E
• 掲載ページ: 1-18
• ISSN（掲載誌）: ISSN : 1349-1121
• 本文の言語コード: eng
• 件名標目: Floating ring seal; Whirling motion; Rotordynamic forces; Bulk-flow model; Stribeck curve
• 対象利用者: 一般
• 一般注記: A floating ring seal (FRS) has been employed as a noncontact type seal, which seals in high-pressure liquid oxygen for the rocket engine turbopump. The turbopump, high-speed, high-power turbomachinery, has suffered from rotor vibration problems up to the present time. However, as the dynamic behavior of FRS has rarely been focused on, it is necessary to clarify the rotordynamic (RD) fluid forces of FRS. The objectives of the present study were to evaluate the RD fluid forces of FRS analytically (bulk-flow model) and experimentally, and to elucidate the structural behavior of FRS caused by the whirling motion of the rotor. Evaluation of RD fluid forces was attempted, and development of a program for evaluation of the FRS is now in progress. RD fluid forces of FRS were measured by an experimental apparatus with an active magnetic bearing. These forces had no significant impact on rotordynamic stability. The axial force induced by differential pressure presses the floating-ring (FR, the component of the FRS) against the stationary housing. Because of the increasing friction force of the secondary contact surface, high axial loads increase the radial force required to reposition the FR. Therefore, it is very important to investigate rotordynamic forces as tribological behavior.; 形態: カラー図版あり; Physical characteristics: Original contains color illustrations; 資料番号: AA0062043000; レポート番号: JAXA-RM-13-008E
• 一次資料へのリンクURL: https://jaxa.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2511&item_no=1&attribute_id=31&file_no=1
• オンライン閲覧公開範囲: 限定公開
• 連携機関・データベース: 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）; https://irdb.nii.ac.jp
• 提供元機関・データベース: 宇宙航空研究開発機構 : 宇宙航空研究開発機構リポジトリ