THE EFFECT OF LOADING INSIDE STRAIN-GAGE STATION ON FLIGHT LOAD MEASUREMENT
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 mechani...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Office of Journal of Mechanical Strength
2017-01-01
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| Series: | Jixie qiangdu |
| Subjects: | |
| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2017.05.012 |
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| Summary: | 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 using3 D 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% <sup> </sup>23. 4%,and for different shear equations the ratio of virtual loads and applied loads is-31. 2% <sup>-</sup>3. 7%. |
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| ISSN: | 1001-9669 |