QUASI-RIGID AERODYNAMIC MODEL OF THE BEARING SURFACE Russian patent published in 2023 - IPC G01M9/08 

FIELD: experimental aerodynamics.

SUBSTANCE: invention relates to the study of problems of aeroelasticity of aircraft in the field of aviation technology, and in particular to the development of models for wind tunnels. A quasi-rigid aerodynamic model of a bearing surface of high elongation is proposed, which is a design of a bearing surface of a variable profile along the span with an internal cavity. The model is made as a single structure, the internal cavity of the model is made along the entire length of the model, excluding the end part in the area of 0.95-1.0 span, and is oriented parallel to the midline of the profile in the sections of the model along its span. The inner cavity has an exit to the lower surface of the model in the form of a slot located along the leading edge of the model. The shape and dimensions of the internal cavity with the slot are designed and made in such a way that the stiffness centers of the model sections are located in the range from 65 to 80% of the local chord in the direction of the trailing edge.

EFFECT: increasing the accuracy of experimental studies of the aerodynamic characteristics of the bearing surface, in particular, improving the accuracy of taking into account the influence of the Reynolds number.

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