WIND TUNNEL Russian patent published in 2011 - IPC G01M9/02 

FIELD: machine building.

SUBSTANCE: device consists of symmetrically set two differential pressure multipliers forming common pre-chamber. Pistons of the multipliers are stepped and travel towards each other. Further, the device consists of a system of hydraulic synchronisation of pistons motion, of a receiver and of a gas-dynamic circuit laid perpendicular of the pre-chamber. Also, above-the piston space of the first multiplier is connected with a source of pushing gas through a fast-response valve, while its under-the valve space is filled with damping liquid and is connected with above-the piston space of the second multiplier by means of a hydraulic channel. To facilitate synchronisation of their motion bigger steps of the multipliers pistons are made of different sizes, so that the second multiplier has diametre of a bigger step of the piston less, than diametre of a bigger step of the piston of the first multiplier.

EFFECT: expanded functionality of wind tunnel of short-term action.

1 dwg