Experimental Research on Fatigue Adjustment Accuracy Cha-racteristics of Flexible Rocker Arms of Variable Stator Vane
Variable stator vane can significantly improve the engine aerodynamic performance and surge margin.Consid-ering the variable stator vane subjected to the aerodynamic torque and axial load and the inside temperature thermal load and other practical conditions,this paper takes variable stator vane flexible rocker arm as research object.The kinematic fatigue characteristic test rig of the flexible rocker arms of variable stator vane is designed and built to carry out the kine-matic fatigue characteristic test of the mechanism under different motion cycles,and the regulation angle accuracy and other variation laws are analyzed.The results show that:in the five-stage adjustment mechanism,the average value of blade angle at all stages increases with the increasing stroke,and there is a hysteresis phenomenon in the round-trip stroke.S4 stage angle difference is the largest,with a peak value of about 0.9°,and all stages of angular differences meet the expected design requirements.The angle deviation of the blades fluctuates in a small range under some cycles.
variable stator vaneflexible rocker armadjustment angleexperimental research
万方数据
维普
