叶片包容性试验研究

EXPERIMENTAL RESEARCH ON BLADE CONTAINMENT

This paper describes the blade containment tests for six sets of single model blade on a vertical breaking down tester with excess revolution.The experimental results indicate that the blade body fragment flying off impacts against the model aeroengine case time and again.The incident angle of the blade fragment against the case in the initial impact is smaller than in the later impacts,the case damage of the first impact is smaller than that of the final impact,and the impacts of the blade fragment against the case make the blade fragment crimple.In principle the experimental results of the blade fragment containment and non containment are consistent with the containment curve of single compressor blade (for use only in case of the blade body) in the Spey MK202 Stressing Standards (EGD 3) and are on the safe side.It is the preliminary conclusion that the containment curve of single compressor blade (for use only in case of the blade body) in EGD 3 can be used to predict the containment of the similar blade.