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In-flight deformation measurement for high-aspect-ratio wing based on 3D speckle correlation

High Technology Letters 2023年第3期29卷 257-268页

作者：张兴国 HU Binghua WANG Yuanliang YAN Hui MA Xiaodong GE Quanbo School of Computing Northwestern Polytechnical UniversityXi′an 710072P.R.China Test Technology Institute Chinese Flight Test EstablishmentXi′an 710089P.R.China School of Logistics Engineering Shanghai Maritime UniversityShanghai 201306P.R.China College of Automation Nanjing University of Information Science&TechnologyNanjing 210044P.R.China

In order to get an effective solution of the in-flight wing deformation measurement for high-wing aircrafts with high-aspect-ratio,a method based on three-dimensional(3D)speckle correlation technique is ***,an in-flight wing deformation measurement system with two sets of conjugate cameras is designed based on structural characteristics and test requirements of high-wing aircrafts with ***,the in-flight wing deformation measurement method based on 3D speckle correlation technique is introduced including three aspects:measuring system and wing datum calibration,speckle image matching and 3D reconstruction,and wing deformation ***-nally,ground simulation test of dynamic deformation measurement of a scaled model wing and flight test of dynamic deformation measurement of a large transport wing are carried *** test results show that the measuring accuracy of single point coordinate in ground simulation test is better than 0.1 mm/m,in the airborne vibration environment,the static single-point positioning accuracy is bet-ter than 5 mm,and the in-flight wing deformation measurement data is well received by the flight test *** method can satisfy the requirements of stability,reliability,high precision,non-con-tact and full-field measurement for dynamic deformation measurement of aircraft wing with high-as-pect-ratio.

关键词： high-aspect-ratio three-dimensional(3D)speckle wing datum

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