Non-contact measurements of composite aircraft wing prototype under load

Abstract

AnnotationMeasurements of general deformation of the wing box prototype of a medium-range passenger aircraft under load were carried out using non-contact videogrammetry (monogrammetry) method. The wing box was 9.8 m long and was made of polymer composite material. The tests were carried out on a special stand, where the variable loading of aircraft wing was simulated at ground and flight modes of a typical flight. The loading was carried out according to the program of tests up to destruction. As a result, the fields of distributed deflection strain were obtained for each loading step. It was shown that the maximum deflection in the end section immediately before failure reached 290 mm. The error in measuring the normal deviations of surface points did not exceed 0.8 mm.