关键词: 涡轮风扇发动机;推力换向喷气发动机;发动机喷管;推力向量控制;实时算法;数学模型

Abstract: The real time mathematical model of the axisymmetric vectoring nozzle was established according to the results of the three dimension CFD. And a novel modeling method for the real time mathematic model of turbofan engine was also presented. In this method the relation among the thermal parameters of the components was presented by explicit analytical terms to avoid the complex and time consuming iterative calculation process in the thermal calculation of the aero engine components. Based on these two real time models, the real time mathematical model of the turbofan engine with thrust vectoring nozzle was acquired. Using this model the effects of thrust vectoring nozzle on the engine were also discussed. Simulation results show that the real time mathematical model of the turbofan engine with thrust vectoring nozzle can be used to calculate both the steady and dynamic process of the engine in different deflected angle and can be used to study the thrust vector control. And the thrust vectoring deflected angle has certain effects on the engine.

Key words: Turbofan engine;Convertible jet engine;Engine nozzle;Thrust vector control;Real time algorithm;Mathematical model