METHOD OF TESTING IN WIND TUNNEL WITH SIMULATION OF EFFECT OF PERIODIC WIND GUST Russian patent published in 2024 - IPC G01M9/00 

FIELD: aerodynamics.

SUBSTANCE: invention relates to aerodynamics and is intended for investigation of aerodynamic characteristics of aircraft model in wind tunnel with account of effect of periodic vertical, horizontal or mixed wind gust at height of supersonic, transonic and subsonic flight. Method involves creation in gas flow of periodic large-scale vortices using a vortex generator (VG) in the form of a plate with sharp edges, which is installed from the wall to the wall of the wind tunnel. Axis of symmetry of the plate, which is parallel to its sharp edges, is placed at different angles, simulating a gust with vertical and horizontal components of the wind gust velocity transverse to the axis of the pipe. During subsonic and transonic tests, the VG is placed in the prechamber, nozzle or in the working part in front of the model; during supersonic tests, the VG is located in the prechamber or subsonic part of the nozzle; the VG is placed in the zone of the wind tunnel contour before the model. Aircraft model is tested with simulation by a VG of vertical, horizontal or mixed wind gust.

EFFECT: broader experimental capabilities and higher safety of testing dynamically similar models in a wind tunnel due to the possibility of determining their resonance frequencies.

2 cl, 9 dwg