Theoretical, Quasi-Static Analysis of Cavitation Compliance in Turbopumps
Theoretical, Quasi-Static Analysis of Cavitation Compliance in Turbopumps
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涡轮泵中空化顺应性的理论、准静态分析
DOI：
10.2514/3.27748
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发表时间：
1973
影响因子：
1.6
通讯作者：
A. Acosta
中科院分区：
文献类型：
--
作者：
C. Brennen;A. Acosta
许多液体推进剂火箭所经历的严重POGO失稳是由第一纵向结构振动模态与推进系统动力学之间的闭环相互作用造成的。后者最重要的特征之一是涡轮泵的空化顺应性。本文介绍了自由流线叶栅理论对叶片空化柔度的计算，并论证了攻角、叶片角、叶片厚度和空化数对叶片空化柔度的各种影响。讨论了计算值与实验值之间的差异。
The serious POGO instability experienced by many liquid propellant rockets results from a closed loop interaction between the first longitudianl structural mode of vibration and the dynamics of the propulsion system. One of the most important features in the latter is the cavitation compliance of the turbopumps. This report presents calculations of the blade cavitation compliance obtained from free streamline cascade theory and demonstrates the various influences of angle of attack, blade angle, blade thickness and cavitation number. Discrepancies between calculated and experimentally derived values are discussed.