Rotordynamic Fluid Forces of Floating Ring Seal for Rocket Turbopump

Material type: 文書・図像類

Author: 弘松, 純ほか

Publisher: 宇宙航空研究開発機構(JAXA)

Publication date: 2013-10-31

Material Format: Digital

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Note (General)：: 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. Th...

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Material Type: 文書・図像類
Title: Rotordynamic Fluid Forces of Floating Ring Seal for Rocket Turbopump
Author/Editor: 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
Author Heading: 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
Publication, Distribution, etc.: 宇宙航空研究開発機構(JAXA)
Publication Date: 2013-10-31
Publication Date (W3CDTF): 2013-10-31
Periodical title: 宇宙航空研究開発機構研究開発資料 = JAXA Research and Development Memorandum
No. or year of volume/issue: JAXA-RM-13-008E
Volume: JAXA-RM-13-008E
Pages: 1-18
ISSN (Periodical Title): ISSN : 1349-1121
Text Language Code: eng
Subject Heading: Floating ring seal
Whirling motion
Rotordynamic forces
Bulk-flow model
Stribeck curve
Target Audience: 一般
Note (General): 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
Access Restrictions: 限定公開
Periodical Title (NCID): AA11983593
https://ci.nii.ac.jp/ncid/AA11983593
Data Provider (Database): 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
Original Data Provider (Database): 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