关键词: 燃烧性能;冲压式喷气发动机;性能分析;燃烧试验

Abstract: In this paper, calculation of combustion efficiency of dump combustors in ramjet engine is discussed.The parameters discussed include inflow angle, the location of fuel manifold, equivelence ratio, the combustor pressure etc. The original combustion efficiency parameter considered by Lefebvre A H and Gordon A H is modified. A new combustion efficiency parameter Ωis presented.And a quantitative relation between combustion efficiency ηc and combustion efficiency parameterΩ is formulated.The combustion efficiency was calculated by using the new formula.The deviation of calculated d-ata from experimental data is within the range of 5%-10%.The calculated method can also be used to the conventional ramjet engine.

Key words: Combustion performance. Ramjet engine;Performance analysis;Combustion test