SUBSONIC WIND TUNNEL WITH LOW LEVEL OF FLOW PULSATIONS OF INFRASOUND RANGE Russian patent published in 2016 - IPC G01M9/02 

FIELD: test equipment.

SUBSTANCE: invention relates to wind tunnels and can be used for various tests of aircraft models, ground transport, buildings, structures, bridges. Wind tunnel comprises prechamber, collector, damping plate at collector outlet, open operation part, diffuser with through damping holes with rows of holes, located at a distance from diffuser inlet section, circular funnel above diffuser, rotary sections with rotating blades, one return channel, blade fan, placed behind diffuser. Wherein diffuser has additional through damping holes, located at a certain distance in relation to existing holes, as well as holes, located with gap between blade fan and diffuser and at a distance relative to existing ones.

EFFECT: technical result consists in reduction of flow pulsations in infsound range, eliminating vibrations of wind tunnel and building, elimination of harmful effects on health of personnel.

3 cl, 13 dwg