A start-stop control system and method for a hypersonic temporary flushing wind tunnel

Abstract

The invention discloses a hypersonic transient impulse type wind tunnel start-stop control system and method, and belongs to the field of wind tunnel experiment. The system comprises a valve core base(5) which is internally provided with a cylindrical cavity (6), multiple support rib plates (11), a movable valve core (7), a first pipeline which penetrates through the transient impulse type wind tunnel pipe wall and is used for controlling the air pressure in a transient impulse type wind tunnel gas storage section (4), and a second pipeline which sequentially penetrates through the transientimpulse type wind tunnel pipe wall and the support rib plates and used for controlling the air pressure in the cylindrical cavity (6). The invention also provides the corresponding transient impulse type wind tunnel start-stop control method. The reciprocating movement of the movable valve core can be controlled by controlling the gas pressure difference between the left and right sides of the movable valve core through the first pipeline and the second pipeline so that that start and stop of the transient impulse type wind tunnel can be controlled, the aerodynamic response speed is fast, thestart and stop speed of the wind tunnel is ensured, start and stop of the wind tunnel can be repeatedly controlled and the operation economy of the hypersonic transient impulse type wind tunnel and the flow field quality of the wind tunnel test can be improved.

Description

Technical field[0001]The invention belongs to the field of wind tunnel experiments, and more specifically, relates to a hypersonic temporary impulse type wind tunnel start-stop control system and method.Background technique[0002]Wind tunnel is a kind of pipe-shaped experimental equipment that artificially generates and controls air flow, which is used to simulate the flow of air around aircraft or entities, and to measure the effect of air flow on entities and observe physical phenomena. It is used for aerodynamics. One of the most commonly used and effective tools for experiments. The performance of the wind tunnel test directly affects the refinement of the aircraft design. With the development of advanced aircraft becoming more precise, functional, and integrated, wind tunnel tests, which provide the most primitive basis for aircraft design, continue to develop in the direction of simulation reality, fine measurement, efficient testing, and integration of methods. The constructio...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the above defects or improvement needs of the prior art, the present invention provides a hypersonic transient wind tunnel start-stop control system and method, the purpose of which is to provide a hypersonic transient The start-stop control system and method of the impulsive wind tunnel, thereby solving the technical problems of the hypersonic temporary impulsive wind tunnel test start-up process relative to the overall experiment time, the response speed of the wind tunnel opening and closing is slow, and the wind tunnel cannot be opened and closed repeatedly

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