DYNAMICALLY SIMILAR AERODYNAMIC MODEL OF AIRCRAFT CONTROL SURFACE Russian patent published in 2020 - IPC G01M9/08 

FIELD: aviation.

SUBSTANCE: invention relates to the field of aviation science and engineering, and, in particular, to experimental research on models of aeroelasticity and aerodynamics in wind tunnels (WT). Invention can be used in experimental research at natural speeds in high-speed air defence. Essence of invention consists in the fact that in dynamic-like model of aircraft control surface, consisting of skin, front and rear side members, a hollow core, drained blocks and dynamic pressure sensors; the lining is made of a bearing and is moulded directly on the hollow core, front and rear side members, with formation of a hollow power torsion box. Drained blocks are installed in tip and rear edge of model. On front and rear edges there are hollow shaping cores of tip and trailing edge. Front and rear side members are double-tee. Side members are made from high-modulus polymer composite material. Hollow core is profiled, upper and lower surfaces of which are equidistant to outer surface of dynamically-similar model in compliance with thickness of load-carrying skin. Casing in shaping tip and on trailing edge has cutouts in specified cross-section for installation of detachable drained inserts. Detachable drained inserts are made in the form of elements of front and rear edges of the model with seats for installation of sensors of dynamic pressure. Measuring devices, including dynamic pressure sensors, cables and reference pressure tubes are located in inner cavities of shaping tip, trailing edge and drained inserts.

EFFECT: technical result consists in providing high-quality streamlined surface of a dynamically similar model, making models more accurate when simulating mass-inertia characteristics of the natural structure, as well as high form stability of external outlines of model in flow, reduced time for experiment preparation in WT.

9 cl, 4 dwg