脉冲式烟雾机燃烧室－喷管结构参数研究

Study on Structural Parameters of Combution Chamber and Exhaust Tube of Pulse-jet Fogger

论述了脉冲式烟雾机燃烧室－喷管结构参数的试验研究，并以脉动燃烧原理和非定常一元可压缩流体的基本理论分析，论证了参数选择的正确性．研究结果表明：脉冲喷气式发动机按声学共振原理工作；燃烧室－喷管，进气单向阀和进油单向阀组成一个自振系统；燃烧室－喷管的结构参数对发动机工作性能有重大影响．

The authors make research on structural parameters of combustion chamber and exhaust tube (C.E.T.) of pulse-jet fogger. The principle of pulse combustion and the theory of non-steady, one-dimensional of compressible flow are used to analyse and verify their selection. The results has shown that the pulse-jet engine operates under the acoustic resonance. The self-excited vibration system consists of a(C.E.T.) unit, one-way air-inlet valve and one-way fuel valve. The structural l parameters of C. E. T. has a great effect on engine performance.