THE EFFECT OF LOADING INSIDE STRAIN-GAGE STATION ON FLIGHT LOAD MEASUREMENT
ZHAO Yan
ZHOU ZhanTing
WAN XiaoPeng
Abstract：Using strain-gage method for non-root flight load measurement some ground calibration data of 2-spar,3-spar and more than 3-spar airfoil structures with different span-chord ration were investigated where some different-level effects of loading inside strain-gage station have been found.The mechanism of the effect on loading inside strain-gage station was analyzed using 3D structure deformation continuity.Moreover the effects of loading inside station on strain-gage values were analyzed,and virtual load result from loading inside strain-gage station was given and discussed.The results show that airfoil span-chord ratio is an important factor relative with strain quantities when loading inside strain-gage station.For different bending-moment equation of certain airfoil the ratio of virtual loads and applied loads is-24.1％ ～ 23.4％,and for different shear equations the ratio of virtual loads and applied loads is-31.2％ ～-3.7％ .
Keywords：Flight load measurementLoading inside strain-gage station3D structure deformation continuitySpan-chord ratio
Publication Date：2017-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：5( 1061-1065 )