Three-branch series connection type hypersonic wind tunnel overall structure

Abstract

The invention discloses a three-branch series connection type hypersonic wind tunnel overall structure, and the structure comprises branches dividing the Mach number simulation range of a hypersonic wind tunnel into three branches, wherein the three branches are the large-flow low-pressure cold air branch, the large-flow medium-temperature medium-pressure branch and the medium-small-flow high-temperature high-pressure branch respectively; the Mach number operation range of the large-flow low-pressure cold air branch is smaller than or equal to Mach number 4, the Mach number operation range of the large-flow medium-temperature medium-pressure branch is larger than 4 and smaller than or equal to 7, and the Mach number operation range of the medium-small-flow high-temperature high-pressure branch is larger than 7 and smaller than or equal to 10. According to the three-branch series connection type hypersonic wind tunnel overall structure provided by the invention, the advanced hypersonic wind tunnel requirement of wide parameter simulation can be realized through a step-by-step implementation mode; the wind tunnel operation state is convenient to switch, the wind tunnel layout is concise, and wind tunnel safe operation and standardized management are facilitated.

Description

Technical field[0001]The present invention relates to the field of high ultrasound wind tunnel test equipment, and in particular, a three-way road series high ultrasound speed wind tunnel is generally related.Background technique[0002]High ultrasound speed venting is the basic equipment for high ultrasound speed aircraft development and aerodynamics. It is an important ground facility platform that meets the strategic needs of national defense and aerospace industry. It is the importance of pneumatic design optimization, verification and assessment. . Advanced high ultrasound speed wind holes must have a wide range of simulation, good quality, and high operating efficiency.[0003]High ultrasound speed wind tunnel is difficult, long construction cycle, large investment volume, or due to high ultrasound speed wind tunnel project construction, or due to funded disk restrictions, or because of the development needs of the current model, or because of the test of a model test The task is ...

AI Technical Summary

Problems solved by technology

When the Mach number is greater than 7 and less than or equal to 10, the air flow of the wind tunnel is relatively small, the pressure level is high, and the heating temperature is high. During use, it is prone to failure due to the influence of high temperature and high pressure.

If a heater is used to meet both the large flow rate and high temperature and high pressure capabilities to achieve the operating range of Mach number greater than 4 and less than or equal to 10, the design of the heater is difficult, the cost is high, and the heating time during the high Mach number test is greatly reduced. Extended, prone to failure, difficult to repair, and difficult to achieve test state switching

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