ロケットターボポンプにおけるロータの軸方向動的不安定の抑制に関する実験的考察 (第一報)

DOI Web Site

書誌事項

タイトル別名
  • Experimental Study about Suppression of an Rotor Dynamic Instability in Axial Direction in a Rocket Turbopump, 1st Report
  • ロケットターボポンプにおけるロータの軸方向動的不安定の抑制に関する実験的考察(第1報)
  • ロケットターボポンプ ニ オケル ロータ ノ ジク ホウコウ ドウテキ フアンテイ ノ ヨクセイ ニ カンスル ジッケンテキ コウサツ(ダイ1ポウ)

この論文をさがす

抄録

<p>In order to understand a mechanism of an axial self-excited vibration which sometimes occurs in a rocket turbopump, pressures and temperatures of the turbopump were measured when the turbopump caused the axial self-excited vibration. The obtained data showed that the phase of the oscillating pressure in the balance piston chamber was delayed at about 20 degrees compared to the phase of the fluctuating rotor displacement. The experimental result means that the damping ratio of the axial thrust balancing system is negative and the system is unstable under the condition of the self-excited vibration as predicted by an analytical model. Furthermore, many experiments using other turbopumps were simulated with the analytical model, and it was found that the estimated damping ratios were always smaller than a certain value when the self-exited vibration happened. It became possible to predict whether the axial self-excited vibration occurs with the analytical model.</p>

収録刊行物

  • ターボ機械

    ターボ機械 48 (4), 193-200, 2020

    一般社団法人 ターボ機械協会

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ