航空发动机机匣包容试验叶片飞脱方法

Blade out Methods of Aeroengine Case Containment Test

风扇机匣包容性试验是航空发动机适航许可试验的重要内容之一,而风扇叶片的飞断方法是风扇机匣包容试验的关键。简述了发动机风扇机匣包容性试验中常用的3种叶片飞脱方法,重点介绍了预制裂纹与线型聚能切割器爆破切割相结合的爆破飞脱方法,并采用该方法对钛合金实心平板叶片进行了静态爆破切割试验,试验结果与设计方案相吻合,达到了预期目标,证明了该爆破飞脱方法具有较强的可行性和较高的可靠性。

Fan case containment test is one of the most important parts of aeroengine airworthiness verification. The blade out methods are the key to the success of the test. The paper briefly describes three blade out methods in the engine fan case containment test, and a blasting blade out technology is mainly introduced which combines precrack with linear shaped charge cutter blasting cutting. With the technology, a static blasting cutting test on the TC4 flat blade was carried out. The result was consistent with the design scheme and met to the expectation, which proved that the blasting blade out technology was feasible and highly reliable.