基于三环驱动的轴对称矢量喷管运动学与力学分析

Kinematics and Mechanical Analysis of the Axial-Symmetric Vectoring Exhaust Nozzle Based on Three-Ring Driving

基于三环驱动的轴对称矢量喷管,其喉道面积影响飞机发动机性能,所以准确调节其面积显得尤为重要。因此,为达到更好的膨胀比和准确调整其喉道面积,就此轴对称矢量喷管进行运动学分析,建立运动学模型,将分析计算结果与实际运动进行比较,得到较高的吻合度,反映了此运动学分析的正确性。轴对称矢量喷管在发动机推力作用下做变载荷运动,所以必须对轴对称矢量喷管进行力学分析,力学分析对轴对称矢量喷管的结构设计与强度校核有一定的指导作用。

The throat area of axisymmetric vectoring exhaust nozzle based on three-ring driving would affect the performance of aircraft engine,so it is very important to adjust the throat area accurately. Therefore,in order to achieve better expansion ratio and accurately adjust its throat area,kinematics analysis was carried out on axisymmetric vector nozzle and the kinematics model is established. Comparing the analysis results with the actual movement,higher degree of anastomosis is obtained so as to reflect the correctness of the kinematics analysis. Axisymmetric vectoring nozzle do variable load motion under the action of engine thrust,so the mechanical analysis of the axisymmetric vectoring nozzle must be carried out; the mechanical analysis has a certain guiding function to the structural design and strength check of the axisymmetric vectoring exhaust nozzle.