关键词: 振荡燃烧;冲压式喷气发动机;发动机试验;压力测量;燃烧稳定性

Abstract: A survey on the latest development to control high amplitude, low frequency pressure oscillations in dump ramjet combustors, and the passive and active control techniques to suppress the oscillations are presented in this paper. Especially, the interactions among the acoustic properties, largescale structures in the shear layer and heat release process in combustors as well as their influence upon the excited high amplitude, low frequency pressure osci llations are discussed in detail. Some suggestions are also presented based on the current researches in this field.

Key words: Oscillation burning;Ramjet engine;Engine test;Pressure measure-ment;Combustion stability