【摘要】 针对搭建的变循环发动机核心机稳态性能计算模型的计算结果与试验结果差距较大的问题,提出一种适用于该计算模型的修正方法。即先利用试验数据算出核心机性能参数,选择在模型中作为独立变量的参数代入计算模型,然后换用与这些参数有相关性的修正因子作为模型方程组的独立变量,通过修正因子在模型中的迭代求解实现性能模型的修正。修正前模型计算结果与试验结果最大相差约10%,修正后两者偏差在1%以内,验证了该方法的有效性和工程实用性。更多还原

【Abstract】 In order to solve the problem of great difference between the steady-state performance model for the engine core of variable cycle engine(VCE) and the test results, a correction method of performance model was introduced. To start with the performance of the engine core was calculated utilizing the test data.The independent variables of the model were substituted into the model. Then the variables were replaced with the correction factors which were related to parameters. The correction of the performance model was carried out by iteration solution of correction factors. Before the correction, there was a relative deviation up to 10% between the results calculated by the model and that calculated from utilizing the test data, while the relative deviation decreased to less than 1% after the correction. The results indicate that the accuracy of corrected model is greatly improved, which means the method is effective and practicable.更多还原