以某型涡扇发动机为研究对象,对其空中减速的试验数据进行深度挖掘,分析了减速过程中低压和高压转速的变化规律,得到该型发动机空中减速过程中转速的预测关系式,并对预测结果进行验证。结果表明,通过预测关系式计算所得结果与飞行试验数据吻合良好,可用作该型发动机空中减速过程的转速预测。 Taking a certain type of turbofan engine as the research object, the experimental data of the air deceleration are deeply tapped. The variation regularity of the low pressure and the high pressure in the process of deceleration is analyzed, and the predicting relation of the rotational speed in the air deceleration is obtained. Forecast results to verify. The results show that the predicted results are in good agreement with the flight test data and can be used to predict the rotational speed of the air-cooled engine.