Free jet type supersonic flue gas flow enthalpy value steady state measurement apparatus

A measuring device and technology of gas flow, which is applied in the field of free-jet type supersonic gas flow enthalpy steady-state measurement device, to achieve strong survivability and improve test accuracy

Active Publication Date: 2017-04-19
BEIJING AEROSPACE INST OF THE LONG MARCH VEHICLE +1
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Problems solved by technology

At the same time, the hypersonic free-jet gas flow generation equip

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  • Free jet type supersonic flue gas flow enthalpy value steady state measurement apparatus
  • Free jet type supersonic flue gas flow enthalpy value steady state measurement apparatus
  • Free jet type supersonic flue gas flow enthalpy value steady state measurement apparatus

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Embodiment Construction

[0023] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0024] figure 1 It is a structural schematic diagram of the free-jet type supersonic gas flow enthalpy steady-state measuring device of the present invention. Such as figure 1 As shown, the free-jet type supersonic gas flow enthalpy steady-state measurement device includes: a test device 5 and a protective cover 6 ; wherein the test device 5 is connected to the protective cover 6 .

[0025] The free-jet type supersonic gas flow enthalpy steady-state measuring device of this embodiment is based on the principle of a total calorimeter, an endothermic calorimeter that takes a small amount of gas samples from the measured high-temperature gas flow. Among them, the test device 5 is used to capture and cool a small amount of gas samples, and indirectly measure parameters such as the temperature rise of the cooling water of the gas sampling pipe 9, the flow rate of the gas...

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Abstract

The invention discloses a free jet type supersonic flue gas flow enthalpy value steady state measurement apparatus, which includes: a measurement apparatus and a protective sleeve which are connected to each other. The measurement apparatus is used for measuring enthalpy value of flue gas flow and the protective sleeve is used for protecting the measurement apparatus. The measurement apparatus can work in a severe heat environment with incoming flow total temperature being higher than 3000 K and heat flow density being higher than 20 MW/m<2> for long time.

Description

technical field [0001] The invention relates to the field of aircraft thermal protection systems, in particular to a free-jet type supersonic gas flow enthalpy steady-state measuring device. Background technique [0002] With the rapid development of my country's hypersonic vehicle industry, the design reliability of the vehicle's thermal protection system has gradually become a key issue restricting the success of the hypersonic vehicle design. The verification of the design reliability of the thermal protection system largely depends on the ground heat protection test as technical support. As one of the most important assessment methods for ground heat protection tests, the high-temperature gas flow test can generate a high-temperature supersonic gas flow free jet flow field, which has a large flow field area and low test cost. Scheme screening, performance assessment and product acceptance test. The free jet flow field of hypersonic gas flow is a non-uniform flow field,...

Claims

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Application Information

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IPC IPC(8): G01N25/20
CPCG01N25/20
Inventor 夏吝时齐斌曹宇清张昕邹样辉张利嵩赵玲李彦良杨驰张凯张喦鲁宇朱广生李建林孟刚周岩水涌涛
Owner BEIJING AEROSPACE INST OF THE LONG MARCH VEHICLE
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