Wind tunnel device for prolonging operation time of hypersonic-speed temporary-flushing wind tunnel

Abstract

The invention belongs to the field of aerodynamic design of hypersonic-speed temporary-flushing wind tunnels, and particularly relates to a wind tunnel device for prolonging the operation time of a hypersonic-speed temporary-flushing wind tunnel, which comprises a gas storage tank, and a gas storage section and a spray pipe which are coaxially arranged, the tail part of the gas storage section extends into the gas storage tank and is hermetically communicated; a flow guide cone cylinder and a flow guide cone which are coaxial with the gas storage section are arranged in the gas storage tank; the front end of the diversion cone extends into the tail end of the gas storage section; the flow guide cone is fixedly mounted on one side, coaxially opposite to the tail end of the gas storage section, of the gas storage tank; expansion waves sequentially pass through the gas storage section and the diversion cone cylinder and reach the diversion cone, and the diversion cone separates the expansion waves and reflects the expansion waves to the two sides of the gas storage tank; a gap exists between the tail end of the flow guide conical cylinder and the inner wall of the gas storage tank, and the outer wall of the flow guide conical cylinder and the inner wall of the gas storage tank define a relatively closed expansion wave dissipation cavity; and the separated expansion wave reaches the expansion wave dissipation cavity through the gap and is gradually dissipated. According to the invention, the effective operation time of the hypersonic speed transient wind tunnel can be effectively prolonged, and the efficiency and cost performance are high.

Description

technical field [0001] The invention belongs to the field of aerodynamic design of a hypersonic transient wind tunnel, and more particularly relates to a wind tunnel device for prolonging the running time of a hypersonic transient wind tunnel. Background technique [0002] The hypersonic wind tunnel is the most important, basic and extensive experimental tool in the field of aerospace research. Its development is closely related to the development of hypersonic vehicles, medium and long-range missiles and spacecraft. The hypersonic transient wind tunnel has a high simulated Reynolds number, relatively lower construction cost and construction difficulty, and is easier to simulate high temperature conditions, so it is widely used in the field of supersonic and hypersonic experimental research. [0003] The hypersonic temporary flushing wind tunnel is a kind of high-pressure gas stored in the gas storage section upstream of the nozzle inlet of the wind tunnel, and the vacuum ta...

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Problems solved by technology

[0004] The invention provides a wind tunnel device for prolonging the running time of a hypersonic transient wind tunnel, which is used to solve the technical problem that the running time of the existing hypersonic transient wind tunnel is heavily dependent on the length of the gas storage section

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