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 with an internal cavity. The internal cavity of the model is made in the form of a cutout located on the side of the leading edge along the entire length of the model, excluding the end part in the area of 0.95-1.0 span, oriented parallel to the midline of the profile in the sections of the model along its span and closed by a windshield forming aerodynamic contours of the profile in the area of the leading edge of the model. The cutout is designed and made in such a way that the stiffness centres of the model sections are located in the range from 65 to 80% of the local chord in the direction to the trailing edge. The upper and lower parts of the model formed by means of a cutout are connected by jumpers discretely located in the front part of the model, forming the profile of the model in the region of the leading edge and oriented along the normal to it.

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.

4 cl, 6 dwg