【摘要】 应用有限单元法研究固体火箭发动机不稳定燃烧中的喷管阻尼，并用波衰减对比法进行了试验研究。喷管声导纳的数值计算结果与实验测得的结果非常吻合。更多还原

【Abstract】 Finite element method is used in the study of nozzle damping of instable combustion in a solid rocket motor.Wave decline method is used in the experimental research.Numerial results of nozzle acoustic admittance is in found to be in good agreement with experiment results.更多还原