关键词: 振荡燃烧;固体火箭发动机

Abstract: A new concept known as "acoustic turbulence" is presented in the paper. It is pointed out that energy transportation caused by "aconstic turbulence"may decrease the burning rate of solid propellant while moderate oscillating combustion occurs. This explains the decresing of average pressure under unstable combustion in solid propellant rocket engine. The theory agrees with the Morita’s experiments qualitatively and is further confirmed by the comparing of calculation with test results in a real rocket engine.

Key words: Oscillating burning;Solid rocket engine