涡轮风扇发动机飞机性能换算方法研究

The Study on Flight Performance Reduction of Turbofan Engine Aircraft

利用因次分析的方法，推导出了涡轮风扇发动机的换算参数，由此得出了涡轮风扇发动机飞机性能换算的基本准则及换算参数，即涡轮风扇发动机飞机的运动相似条件，并给出了部分换算公式。以此为基础，可以将实际条件下得到的涡轮风扇发动机飞机的性能参数换算到标准条件。经某型飞机的试飞证明，该换算方法正确，结果可靠，完全能够为飞机定型及性能比较提供依据。

This paper discusses the method of flight performance reduction of turbofan engine aircraft, and then presents basic reduce law and reduce parameters used in performance reduction. Based on this method, flight test data from true condition of turbofan engine aircraft can be reduced to the equivalent data at standard condition (standard weight and standard atmosphere conditions, ect. ). This method had been used in flight test.