人们对于航空发动机整机测振技术的重视是随着生产实践的不断深入而逐渐提高的。如我国早期生产的航空发动机——活塞式发动机,由于转速低、功率小等原因,在其技术参数中并无振动过载值这一限制,因此在生产过程中并不进行整机测振。可是有一次在某厂试制某活塞式发动机的过程中,由于机匣在工作100多小时后出现裂纹而长期通不过台架寿命试车,经过分析,发现其原因就是由于发动机台架试车时螺旋桨桨叶和试车厂房激起的气流振动传到机匣,而当时发动机和台架间的固定环节上又未采取有效的减振措施,因此使机匣产生疲劳裂纹。再如在70年代,根据苏联发动机制造厂发来的 People attach great importance to the aeroengine vibration measurement technology with the continuous deepening of production practices. Such as China’s early production of aeroengine - piston engine, due to low speed, low power and other reasons, there is no vibration overload in the technical parameters of this limit, so the whole process is not in the production of vibration measurement. But once in a factory trial production of a piston engine in the process, as the casing in the work of more than 100 hours after the crack and long-term pass test bench life, after analysis, found that the reason is because the engine test bench propeller The vibration of the airflow induced by the leaves and the test car was transmitted to the casing, and at that time, no effective damping measures were taken on the fixed part between the engine and the gantry, so that the casing produced fatigue cracks. Again in the 70s, according to the Soviet engine factory sent