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燃烧效率能够部分反映出燃烧室性能的优劣,是超燃冲压发动机性能评价的重要指标之一。基于总温测量的超燃冲压发动机燃烧效率获取方法不需要测量或计算燃气组分、摩擦力、支板阻力等,避免了上述过程带来的误差,可有效提高测量精度。利用新型半屏式总温传感器,成功测量了M6、当量比1状态下超燃冲压发动机燃烧室的出口总温,获得了基于温升比定义的发动机燃烧效率。
Combustion efficiency can partly reflect the performance of the combustion chamber, which is one of the important indexes for the performance evaluation of scramjet. The method for obtaining the combustion efficiency of a scramjet based on the total temperature measurement does not need to measure or calculate the gas composition, the frictional force, the support resistance and so on, thus avoiding the error brought by the above process and effectively improving the measurement accuracy. With the new semi-screen total temperature sensor, the total outlet temperature of the scramjet combustion chamber under M6, equivalent ratio 1 state was successfully measured, and the engine combustion efficiency based on the temperature rise ratio was obtained.