Test And Analysis To Vortex Blade Of Particle Separator Under Foreign Object Impact

The particle separator (IPS) is a special device of helicopter used for the purification of the entrance air and the protection of the engine. The vortex blade of the particle separator will be damaged if impacted by the foreign object for a long time, thus the separation efficiency of the particle separator and the safety of the engine will be affected. Therefore, it is important to know about the damage rule of particle separator, to analyze the degree of blade distortion by means of tests and calculations, to propose a set of vortex blade anti- impact ability appraisal methods.In this paper, the contents and the methods of the impacting test to the particle separator vortex blades by the foreign object are introduced, the ultra dynamic strain device is used to carry on the measure of this experiment and obtained the strain - time history, three dimensional coordinate measuring method is used to measure the remaining distortion of the vortex blade, and the high speed photographic apparatus is used to carry on the photography of the impacting experiment.On the basis of the impacting test of particle separator vortex blade, utilize ANSYS/LS-DYNA finite element software to carry on the value computation to the impacting process and the analysis to the computed result; And carry on the comparison to the computed result and the test result, two kind of results tally well.The analytical and experimental system for the responses of vortex blade under the impact, which can be used in the anti-impact design of vortex blade, is established in the research work of this paper.