METHOD OF CONCENTRATION OF SHOCK WAVE BRAKING PRESSURE IN SHOCK TUBE AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2024 - IPC G01M9/04 

FIELD: experimental aerodynamics.

SUBSTANCE: method relates to the field of experimental aerodynamics, in particular to vacuum percussion aerodynamic plants, which provide simulation of flight conditions of aircraft in the upper atmosphere, in outer space; and can be used for concentration of gas flow braking pressure before inlet into hypersonic nozzle in laboratory conditions. A distinctive feature of the device for implementing the corresponding method is that between the high-pressure chamber and the nozzle there is a nozzle valve with a movable, due to pressing air, cap with two holes connected to the valve, which are closed at the initial moment and connected to each other by spring-loaded covers, one of the holes faces outside the shock tube, and the other one – towards the low-pressure chamber; at that, the spring-loaded cover, which is closed at the initial moment by the pressure pressing it, which corresponds to the shock wave braking pressure.

EFFECT: providing pressure concentration at the nozzle inlet, simplifying the operation of the pneumatic nozzle valve and expanding the functional capabilities of the shock tube.

2 cl, 3 dwg