螺旋桨桨叶载荷标定方法研究及试验验证

打开文本图片集

中图分类号：V217.32 文献标志码：A文章编号：1000-4939（2026）02-0295-08

Abstract： The thrust of the turboprop engine is mostly generated by the rotation of the propeller，which propels the aircraft forward.The propeller blade is subjected to the combined action of various loads such as flapping bending moment，shimmy bending moment and torsion when it is working.And blade load measurement is an important means to obtain propeler structural data and evaluate its fatigue life reasonably.However，the accuracy of blade load measurement inthe air is greatly afected by the calibration curve obtained from the ground calibration test.In this paper，the physical decoupling method is studied for the common coupling problem of flapping and shimmy loads in ground calibration test.This method continuously adjusts the measurement position of the strain gauge by the step-by-step approach method，and the experimental verification is caried out on the propeler blade for the first time.The test results show that the method can better realize the decoupling of flapping and shimmy loads. Before decoupling，the relative coupling coefficient of the two is as high as 178% . However， after decoupling，the relative coupling coefficient of each test section reaches below 3% ，indicating that the decoupling method is reasonable and feasible，which provides important reference experience for the subsequent load calibration tests of other propeller blades.

Key words：propeller blade； flapping load; shimmy load; calibration test； gradually approaching； physi-cal decoupling

螺旋桨是螺旋桨式飞机动力装置的重要组成部分。（剩余10452字）