PRECHAMBER OF PISTON WIND TUNNEL Russian patent published in 2014 - IPC G01M9/00 

FIELD: test equipment.

SUBSTANCE: prechamber relates to the field of experimental aerodynamics and can be used at developments of designs of piston aerodynamic units with high parameters of braking of working gas. The prechamber consists of housing, jointed with the pipe channel with the moving piston. It contains check valve and nozzle. Meanwhile the internal surface of the housing, input section of the nozzle and the non-working surfaces of the valve are made from porous heatproof material of specified width and variable by width permeability.

EFFECT: damping of both longitudinal, and transversal pressure oscillations of working gas in a wide frequency range; in addition - decrease of heat flows into the prechamber housing and decrease of degree of dust content of working gas.

1 dwg