A device for measuring instantaneous heat flow at stagnation point of high-temperature plasma wind tunnel

A plasma and measurement device technology, which is applied in the field of devices for measuring instantaneous heat flow on the surface of materials in plasma wind tunnels, can solve the problem that the surface material of coaxial thermocouples cannot be stably solidified for a long time, and achieve stable torque transmission and high speed. uniform effect

Active Publication Date: 2020-05-12
星焓科技(北京)有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

In the field of plasma wind tunnels, because the surface material of coaxial thermocouples cannot be solidified stably for a long time, there is no precedent for using coaxial thermocouples to measure the transient heat flow of airflow in plasma wind tunnels.

Method used

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  • A device for measuring instantaneous heat flow at stagnation point of high-temperature plasma wind tunnel
  • A device for measuring instantaneous heat flow at stagnation point of high-temperature plasma wind tunnel
  • A device for measuring instantaneous heat flow at stagnation point of high-temperature plasma wind tunnel

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Embodiment Construction

[0025] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0026] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. EXAMPLE LIMITATIONS.

[0027] Such as Figure 1-Figure 4 As shown, a high-temperature plasma wind tunnel stagnation point instantaneous heat flow measuring device is characterized in that it includes a graphite baffle 101...

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Abstract

The application discloses a measuring device for an instantaneous heat flow of a high temperature plasma wind tunnel stagnation point. The measuring device comprises a graphite baffle, a connecting fixing seat, a motor bracket, a low speed motor, a rib plate, a support base, a coaxial thermocouple, a clamping base, and a stable bottom plate. According to the invention, the time and interval of aninstantaneous airflow flowing through the coaxial thermocouple can be controlled by different speeds of the low speed motor, thereby protecting the coaxial thermocouple from being damaged by long-timeablation and thus realizing instantaneous heat flow measurement.

Description

technical field [0001] The invention belongs to the technical field of plasma wind tunnel measurement, and in particular relates to a device for measuring instantaneous heat flow on the surface of a test material in an arc plasma wind tunnel by using a contact measurement method. Background technique [0002] Planetary re-entry is the fourth stage of the complete flight of the aircraft. In this stage, the aircraft flies at a very high speed and can reach supersonic speed. The shock wave generated by the front end of the aircraft decomposes the gas flowing at the front edge, and produces a gas with high enthalpy and high ionization state. It poses a very severe test to the thermal protection performance of the aircraft. [0003] Plasma wind tunnel is one of the measurement devices for calibrating the thermal protection system of aircraft. Due to its ability to generate high-temperature and high-enthalpy plasma flow stably for a long time, it has been widely used in the test o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M9/06
CPCG01M9/065
Inventor 王一白寿世烨章喆汤海滨任军学
Owner 星焓科技(北京)有限公司
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