Research on tracking loading method and device of wings with high aspect ratio
In the load calibration experiments of wings with high aspect ratio,the wings will bend and deform with the increase of load,resulting in a change in the direction of the normal load at the loading point,which affects the accu-racy of the load calibration experiments.To solve this problem,a set of high aspect ratio tracking loading device was de-signed.The device controls the vertical displacement of the loading point through an electric cylinder,and the horizontal displacement of the electric cylinder through a displacement table.The linkage control system is used to keep the force ex-erted on the wing surface in the load calibration experiment perpendicular to the wing surface,so as to ensure that the load on the wing is always in the normal direction.The comparison experiment between the tracking loading and the verti-cal loading was performed,and the results showed that the correlation coefficient of the data obtained by the tracking load-ing reached 0.999,which was better than the correlation coefficient of 0.976 obtained by the vertical loading of the weight,which verified the effectiveness of the tracking loading device.This device possesses the advantages of compact size and straightforward operation,thereby offering support for advancing the research on the performance of high aspect ratio wings.
tracking loading devicehigh aspect ratio wingfixed-normal loadcorrelation coefficientcomparison experiment
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