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Wide-area air inlet pressure regulating system for hypersonic wind tunnel

A pressure regulating system, hypersonic technology, applied in aerodynamic tests, measuring devices, instruments, etc., can solve the problems of high-precision and stable control over a wide area of ​​pressure range limiting the simulation capability of hypersonic wind tunnel tests, and shorten the preparation time. , The effect of high pressure regulation accuracy and fast pressure regulation speed

Active Publication Date: 2020-04-14
CHINA ACAD OF AEROSPACE AERODYNAMICS
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Problems solved by technology

[0004] The technical problem solved by the present invention is: in view of the current existing technology, the intake pressure regulation system of the conventional hypersonic wind tunnel cannot realize the high-precision and stable control of the wide area pressure range and limit the test simulation ability of the hypersonic wind tunnel, A hypersonic wind tunnel wide-area intake pressure regulation system is proposed

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  • Wide-area air inlet pressure regulating system for hypersonic wind tunnel
  • Wide-area air inlet pressure regulating system for hypersonic wind tunnel

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Embodiment Construction

[0019] Hypersonic wind tunnel wide-area intake pressure regulation system, according to different wind tunnel test requirements, calculated from the wind tunnel test Mach number Ma, Reynolds number Re, and simulated flight altitude H The total pressure and total temperature parameters of the front chamber of the wind tunnel , select the corresponding intake pressure regulation mode according to the total pressure of the front chamber, and the specific intake pressure regulation modes include:

[0020] Vacuum incoming flow pressure mode, medium pressure incoming flow pressure mode, high pressure incoming flow pressure mode, when the intake pressure regulation mode is vacuum incoming flow pressure mode, medium pressure incoming flow When the pressure regulation mode is the high-pressure inflow pressure mode, select the high-pressure intake passage, where:

[0021] A hypersonic wind tunnel wide-area intake pressure regulation system, such as figure 1 As shown, including medium p...

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Abstract

The invention discloses a wide-area air inlet pressure regulating system for a hypersonic wind tunnel. A corresponding air inlet pressure regulating mode is selected according to the incoming flow pressure of a front chamber; wide-area high-precision air inlet pressure regulating requirements for providing vacuum incoming flow pressure, medium-pressure incoming flow pressure and high-pressure incoming flow pressure can be met at the same time; large-range regulation of airflow flow under different Mach number spray pipes of the hypersonic wind tunnel can be achieved, the pressure regulating precision is high, preparation time of air exhaust and preheating before a wind tunnel test is greatly shortened, a pressure pre-charging function before the test is achieved, the pressure is stable, the regulating speed is high, and the test blowing time can be effectively prolonged.

Description

technical field [0001] The invention relates to a hypersonic wind tunnel wide-area intake pressure regulating system, which belongs to the field of hypersonic wind tunnel design and flow field control. Background technique [0002] A wind tunnel is a pipe-shaped test device that artificially generates and controls airflow to simulate the flow of air around an aircraft or object, and can measure the effect of airflow on an object. Aerodynamic ground simulation equipment such as wind tunnels plays a very important role in the research of aerodynamics and the design of various aerospace vehicles. According to the test air velocity range, it is divided into low-speed wind tunnel, high-speed wind tunnel and hypersonic wind tunnel. The basic principle of a conventional hypersonic wind tunnel is: the mechanically compressed gas is stored in the gas source system, adjusted to the target pressure by the intake pressure adjustment system, then enters the heater of the wind tunnel, an...

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Application Information

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IPC IPC(8): G01M9/06
CPCG01M9/065
Inventor 马利川晏硕赵佳祥石运军黄炳修李玉秋孙涛
Owner CHINA ACAD OF AEROSPACE AERODYNAMICS
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