A wide-area intake pressure regulation system for a hypersonic wind tunnel

A pressure regulating system and hypersonic technology, applied in aerodynamic tests, machine/structural component testing, instruments, etc., can solve problems such as wide-area pressure range, high-precision and stable control, and limitation of hypersonic wind tunnel test simulation capabilities. Achieve the effect of shortening preparation time, rapid pressure regulation and high pressure regulation accuracy

Active Publication Date: 2022-07-05
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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  • A wide-area intake pressure regulation system for a hypersonic wind tunnel
  • A wide-area intake pressure regulation system for a hypersonic wind tunnel

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Embodiment Construction

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

[0020] Vacuum incoming pressure mode, medium pressure incoming pressure mode, high pressure incoming pressure mode, when the intake pressure regulation mode is vacuum incoming pressure mode and medium pressure incoming pressure mode, the medium pressure intake passage is selected. When the pressure regulation mode is the high-pressure incoming pressure mode, the high-pressure intake passage is selected, in which:

[0021] A wide-area intake pressure regulation system in a hypersonic w...

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Abstract

A wide-area intake pressure regulation system of a hypersonic wind tunnel, which selects a corresponding intake pressure regulation mode according to the incoming flow pressure of the front chamber, which can simultaneously provide a wide area of ​​vacuum incoming flow pressure, medium pressure incoming flow pressure and high pressure incoming flow pressure High-precision intake pressure regulation requirements, can realize a wide range of air flow adjustment under different Mach number nozzles in hypersonic wind tunnels, high pressure regulation accuracy, greatly shorten the preparation time for air extraction and preheating before wind tunnel tests, and have the ability to Pressure pre-charging function, the pressure is stable and the adjustment speed is fast, which can effectively prolong the test blowing time.

Description

technical field [0001] The invention relates to a wide-area intake pressure regulating system of a hypersonic wind tunnel, belonging to the fields of hypersonic wind tunnel design and flow field control. Background technique [0002] A wind tunnel is a kind of pipe-shaped experimental equipment that artificially generates and controls airflow to simulate the flow of gas around an aircraft or object, and can measure the effect of airflow on the object. Aerodynamic ground simulation equipment such as wind tunnels play a very important role in aerodynamic research 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 the conventional hypersonic wind tunnel is: the mechanically compressed gas is stored in the gas source system, and after being adjusted to the target pressure by the intake pressure regulating system, it enters the ...

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Application Information

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Patent Type & Authority Patents(China)
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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