AERODYNAMIC UNIT OF ADIABATIC COMPRESSION WITH TWO PRECHAMBERS Russian patent published in 2014 - IPC G01M9/00 

FIELD: test equipment.

SUBSTANCE: aerodynamic unit relates to the field of experimental aerodynamics and can be used for study of hypersonic flows. The unit consists of cylinder, trunk, piston, nozzle and working section. It contains the throttling device designed as conical holes in a wall between chambers. In addition the throttling device includes the profiled body partially shutting the holes. Meanwhile the profiled body is rigidly connected with the rod through the sealing system and discharge channels to the piston. During one experiment the influence of both increasing and decreasing velocity head is studied, that allows to reduce the necessary amount of experiments 1.5-2 times.

EFFECT: possibility to simulate the processes of braking action and motion of manoeuvring flying objects moving with hypersonic speeds in dense atmospheric layers.

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