Four-way mixing chamber for radiation convection coupling aerodynamic heat test

Abstract

The invention relates to a four-way mixing chamber for a radiation convection coupling aerodynamic heat test, which comprises an airflow cavity and a radiation cavity, and is characterized in that the airflow cavity comprises a small-end flange, a four-way inner shell, a four-way outer shell, an upstream flange, a large-end flange and a first air inlet ring; the four-way outer shell wraps the outer side of the four-way inner shell. The small-end flange is installed on one side of the small end of the four-way inner shell, the upstream flanges are installed on the two sides of the four-way inner shell, the large-end flange is installed on one side of the large end of the four-way inner shell, and the first air inlet ring is installed on the inner side of the large-end flange. The radiation cavity comprises a communicating flange, a radiation cavity inner shell, a radiation cavity outer shell, a radiation flange and a second air inlet ring, the radiation cavity outer shell wraps the radiation cavity inner shell, the communicating flange is installed at the large end of the radiation cavity inner shell, the radiation flange is installed at the small end of the radiation cavity inner shell, and the second air inlet ring is installed on the inner side of the radiation flange. When in use, the airflow cavity and the radiation cavity are connected together, and high-pressure cooling water and high-pressure cold air are respectively introduced into the airflow cavity and the radiation cavity. The device is mainly used for integration of a convection heat source and a radiation heat source and modulation of a convection heat source flow field in a radiation and convection coupling aerodynamic heat ground simulation test.

Description

Technical Field

[0001] The invention relates to a mixing chamber used for radiation convection coupled aerodynamic thermal test, belonging to the field of aerospace aircraft aerodynamic thermal ground simulation test equipment. Technical Background

[0002] In the ground simulation test of aerodynamic thermal protection, the radiation-convection coupled aerodynamic thermal test has been gradually promoted as an important test method for the refined design of the thermal protection structure of high-speed reentry vehicles. In this test, the high-temperature airflow generated by the arc heater, gas flow and other equipment is used as the convection heat source, and the high-energy flux radiation generated by the quartz lamp, carbon arc lamp, xenon arc lamp and other equipment is used as the radiation heat source. They will act on the surface of the test model at the same time to simulate the coupling effect of the convection heating generated by the atmosphere and the radiation heating generated by the high-intensity shock wave on the thermal protection material of the aircraft when the aircraft reenters at high speed.

[0003] In the above-mentioned convective heat source and radiant heat source generating device, the arc heater or gas flow device as the convective heat source is usually large and complex, while the radiant heat source is usually simple in structure. Therefore, the radiation convection coupled pneumatic heat test devices currently used are all improved on the basis of the convective heat source device. The traditional convective heating device and the test model are arranged on the same axis, so that the radiation heat source generated by the radiation convection coupled test device improved on this basis needs to act on the test model by reflection or oblique illumination, which makes the radiation heat efficiency and the radiation uniformity received by the surface of the test model low. In order to improve the above-mentioned radiant heat environment disadvantages in the radiation convection coupled test device, it is necessary to develop a new test device. To this end, it is necessary to provide a device in the test device that can integrate the convective heat source and the radiant heat source so that the radiant heat source and the high-temperature airflow are on the same axis.

[0004] Patent content

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a device integrating a convective heat source and a radiant heat source that can generate a direct radiant heat environment while ensuring that the convective heat environment does not deteriorate.

[0006] The technical solution of the present invention is: a four-way mixing chamber for radiation convection coupled pneumatic thermal testing, comprising an airflow chamber and a radiation chamber;

[0007] The airflow cavity comprises a four-way inner shell, a first air intake ring and a first connecting structural member; the four-way inner shell is a cross-shaped cylindrical structure composed of a longitudinal through cavity and a transverse through cavity, the longitudinal through cavity is a conical cylinder, and the transverse through cavity is a cylindrical shape with small ends and a large middle; a channel for water cooling and air cooling is arranged between the four-way inner shell and the first connecting structural member outside the four-way inner shell; the cooling gas in the air intake channel finally enters the four-way inner shell through the first air intake ring located at the large end of the longitudinal through cavity;

[0008] The radiation cavity comprises a radiation cavity inner shell, a second air intake ring and a second connecting structure; the radiation cavity inner shell is a semi-ellipsoidal structure, having a semi-ellipsoidal inner cavity, and the small end of the semi-ellipsoidal inner cavity is connected to the radiation source through the second air intake ring; a channel for water cooling and air cooling is provided between the radiation cavity inner shell and the second connecting structure, and the cooling gas in the air intake channel enters the radiation cavity inner shell through the second air intake ring and the air cooling channel;

[0009] During the test, the airflow cavity and the radiation cavity are fixedly connected, and the longitudinal through cavity of the airflow cavity coincides with the axis of the semi-ellipsoidal inner cavity; convection heat sources are installed at both ends of the transverse through cavity, and the irradiation direction of the radiation heat source and the outflow direction of the convection heat source flow field are on the same axis.

[0010] Preferably, the first connecting structure comprises a small end flange, a four-way housing, an upstream flange, and a large end flange;

[0011] The outer wall surface of the four-way inner shell has a rib structure; the four-way outer shell is wrapped around the outer side of the four-way inner shell, and the cavity formed between the inner wall surface and the ribs of the outer wall surface of the four-way inner shell is the first water cooling channel; the small end flange is installed on the small end side of the longitudinal cavity of the four-way inner shell, the outer wall surface of the flange is provided with a first water outlet channel, and the inner wall surface is provided with a first annular water collecting trough; the upstream flange is installed on both sides of the transverse cavity of the four-way inner shell, with a total of two pieces, the outer wall surface of the flange is provided with a first water inlet channel, and the inner wall surface is provided with a first annular water collecting trough; the large end flange is installed on the large end side of the longitudinal cavity of the four-way inner shell, the outer wall surface of the flange is provided with a first water outlet channel and a first air inlet channel, and the inner wall surface is provided with a first annular water collecting trough and a first air collecting trough; the first air inlet ring is installed on the inner side of the first air collecting trough of the large end flange, and a number of first air inlet holes are evenly distributed thereon.

[0012] Preferably, the first air intake ring is an equal-diameter circular ring, and the inlet direction of the first air intake hole thereon on the outer circumferential surface of the first air intake ring is the same as the radial direction, and the outlet direction on the inner circumferential surface of the first air intake ring is at a 45° angle to the axis of the first air intake ring, and there is a rounded transition between the two, and the radius of the transition rounded corner on the central axis of the first air intake hole is not less than the thickness of the first air intake ring.

[0013] Preferably, the sum of the cross-sectional areas of the first air inlet holes is equal to the sum of the cross-sectional areas of the first air inlet channels.

[0014] Preferably, the taper of the longitudinal through cavity is consistent with the converging light path of the radiation source.

[0015] Preferably, the inner surfaces of the longitudinal through cavity and the transverse through cavity are tangent to each other at their junction.

[0016] Preferably, the second connecting structure comprises a connecting flange, a radiation cavity shell, and a radiation flange;

[0017] Among them, the outer wall surface of the radiation cavity inner shell has ribs, and an air cooling channel is opened along the symmetry axis at the tip of the ellipsoid; the radiation cavity outer shell is wrapped around the outer side of the radiation cavity inner shell, and the channel between its inner wall surface and the ribs of the outer wall of the radiation cavity inner shell forms a second water cooling channel; the connecting flange is installed at the large end of the radiation cavity inner shell, and a second water outlet channel is opened on its circumferential outer wall surface, and a second annular water collecting groove is opened on the inner wall surface; the radiation flange is installed at the small end of the radiation cavity inner shell, and a second water inlet channel and a second air inlet channel are opened on the circumferential outer wall surface of the flange, and a second annular water collecting groove and a second air collecting groove are opened on the inner wall surface, and a radiation source mounting hole is opened on the end face close to the second air collecting groove along the symmetry axis; the second air inlet ring is installed on the inner side of the second air collecting groove of the radiation flange, and a number of second air inlet holes are evenly distributed on it.

[0018] Preferably, the second air inlet ring is in a 45° cone with respect to the axis of the radiation cavity, and the second air inlet holes distributed thereon are perpendicular to the surface of the second air inlet ring.

[0019] Preferably, the sum of the cross-sectional areas of the second air inlet holes is equal to the sum of the cross-sectional areas of the second air inlet channels.

[0020] Preferably, the sum of the number and the cross-sectional area of ​​the second air intake channels is respectively greater than the sum of the number and the cross-sectional area of ​​the first air intake channels.

[0021] Preferably, the semi-ellipsoidal inner cavity has the same outer wall shape as the ellipsoidal reflector used as the radiation source.

[0022] Preferably, the four-way inner shell and the radiation chamber inner shell are made of zirconium bronze, and the remaining parts are made of stainless steel. All parts of the airflow chamber and the radiation chamber are assembled by vacuum furnace brazing.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] (1) The present invention can install a radiation heat source. When it is used in a radiation-convection coupling test device, the irradiation direction of the radiation heat source and the outflow direction of the convection heat source flow field are on the same axis, which can effectively improve the radiation heat efficiency and the radiation uniformity of the receiving surface;

[0025] (2) The present invention can install two convection heat sources at the same time, which can improve the integration and perform total temperature modulation, voltage stabilization and rectification on the high-temperature airflow generated by the convection heat source;

[0026] (3) The radiation cavity of the present invention can effectively cool the outer shell and the core of the radiation heat source, which can effectively increase the service life of the radiation heat source;

[0027] (4) The water-cooling structure of the present invention and the brazing process used can increase the service life of the device itself and can withstand high temperature and high pressure convection flow field environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is an isometric side sectional view of a four-way mixing chamber for a radiation-convection coupled aerodynamic-thermal test according to an embodiment of the present invention;

[0029] Figure 2 A cross-sectional view of the airflow cavity according to an embodiment of the present invention;

[0030] Figure 3 is a cross-sectional view of a radiation cavity according to an embodiment of the present invention;

[0031] Figure 4 Schematic diagram of the use of an embodiment of the present invention. DETAILED DESCRIPTION

[0032] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features described in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] The present invention provides a four-way mixing chamber for radiation convection coupled pneumatic thermal test, comprising an airflow chamber 1 and a radiation chamber 2, such as Figure 1 The airflow cavity 1 includes a small end flange 11, a four-way inner shell 12, a four-way outer shell 13, an upstream flange 14, a large end flange 15 and a first air inlet ring 16, as shown in FIG. Figure 2As shown. Among them, the four-way inner shell 12 is a cross-shaped cylindrical structure composed of a longitudinal through cavity 104 and a transverse through cavity 106. The longitudinal through cavity 104 is a conical cylinder, and the transverse through cavity 106 is a cylindrical type with small ends and a large middle. The outer wall of the four-way inner shell 12 has a rib structure. The four-way outer shell 13 is wrapped around the outside of the four-way inner shell 12, and the cavity formed between its inner wall and the ribs on the outer wall of the four-way inner shell 12 is the first water cooling channel 103. The small end flange 11 is installed on the small end side of the longitudinal through cavity 104 of the four-way inner shell 12, and the outer wall surface of the flange is provided with a first water outlet channel 101, and the inner wall surface is provided with a first annular water collecting trough 102. The upstream flange 14 is installed on both sides of the transverse through cavity 106 of the four-way inner shell 12, with a total of two pieces, and the outer wall surface of the flange is provided with a first water inlet channel 105, and the inner wall surface is provided with a first annular water collecting trough 102. The large end flange 15 is installed on the large end side of the longitudinal through cavity 104 of the four-way inner shell 12. The outer wall surface of the flange is provided with a first water outlet channel 101 and a first air inlet channel 107, and the inner wall surface is provided with an annular first water collecting groove 102 and a first air collecting groove 108. The first air inlet ring 16 is installed on the inner side of the first air collecting groove 108 of the large end flange 15, and a plurality of first air inlet holes 109 are evenly distributed thereon.

[0034] The radiation cavity 2 includes a connecting flange 21, a radiation cavity inner shell 22, a radiation cavity outer shell 23, a radiation flange 24 and a second air inlet ring 25. Figure 3 As shown. Among them, the radiation cavity inner shell 22 is a semi-ellipsoid inner cavity 204, whose outer wall surface has ribs, and an air cooling channel 209 is opened along the symmetry axis at the apex of the ellipsoid. The radiation cavity outer shell 23 is wrapped around the outer side of the radiation cavity inner shell 22, and the channel between its inner wall surface and the outer wall ribs of the radiation cavity inner shell 22 forms a second water cooling channel 203. The connecting flange 21 is installed at the large end of the radiation cavity inner shell 22, and a second water outlet channel 201 is opened on its circumferential outer wall surface, and an annular second water collecting groove 202 is opened on the inner wall surface. The radiation flange 24 is installed at the small end of the radiation cavity inner shell 22, and a second water inlet channel 210 and a second air inlet channel 205 are opened on the circumferential outer wall surface of the flange, and an annular second water collecting groove 202 and a second air collecting groove 206 are opened on the inner wall surface, and a radiation source mounting hole 208 is opened on the end face of the flange close to the second air collecting groove 206 along the symmetry axis. The second air inlet ring 25 is installed on the inner side of the second air collecting groove 206 of the radiation flange 24, and has a plurality of second air inlet holes 207 evenly distributed thereon.

[0035] When using, Figure 4As shown, the airflow chamber 1 and the radiation chamber 2 are bolted together through the large end flange 15 and the connecting flange 21, and high-pressure cooling water and high-pressure cold air are respectively introduced into the airflow chamber 1 and the radiation chamber 2. For the airflow chamber 1, the high-pressure cooling water enters the first water cooling channel 103 through the first water collecting groove 102 from the first water inlet channel 105 of the two upstream flanges 14, and then flows out from the two sides, namely the first water outlet channel 101 of the small end flange 11 and the large end flange 15 after merging at the intersection of the longitudinal through cavity 104 and the transverse through cavity 106. The high-pressure cold air enters the first collecting groove 108 from the first air inlet channel 107 of the large end flange 15, and then enters the four-way inner shell 12 from the first air inlet holes 109 of the first air inlet ring 16. For the radiation cavity 2, high-pressure cooling water enters the second water cooling channel 203 from the second water inlet channel 210 of the radiation flange 24 through the second water collecting tank 202, and then flows out from the second water outlet channel 201 of the connecting flange 21. High-pressure cold air enters the second air collecting tank 206 from the second air inlet channel 205 of the radiation flange 24, passes through several second air inlet holes 207 of the second air inlet ring 25, flows through the air cooling channel 209, and then enters the radiation cavity inner shell 22.

[0036] Specifically, the first air intake ring 16 of the air flow cavity 1 is an equal-diameter circular ring, and the inlet direction of the first air intake hole 109 thereon on the outer circular surface of the first air intake ring 16 is the same as the radial direction, and the outlet direction on the inner circular surface of the first air intake ring 16 is at a 45° angle to the axis of the first air intake ring 16, and there is a rounded transition between the two, and the radius of the transition rounded corner on the central axis of the first air intake hole 109 is not less than the thickness of the first air intake ring 16.

[0037] Specifically, the second air inlet ring 25 of the radiation cavity 2 is in a 45° cone with respect to the axis of the radiation cavity 2 , and the second air inlet holes 207 distributed thereon are perpendicular to the surface of the second air inlet ring 25 .

[0038] Specifically, the sum of the cross-sectional areas of the first air inlet holes 109 of the airflow cavity 1 is equal to the sum of the cross-sectional areas of the first air inlet channel 107 , and the sum of the cross-sectional areas of the second air inlet holes 207 of the radiation cavity 2 is equal to the sum of the cross-sectional areas of the second air inlet channel 205 .

[0039] Specifically, the sum of the number and the cross-sectional area of ​​the second air intake channels 205 is respectively greater than the sum of the number and the cross-sectional area of ​​the first air intake channels 107 .

[0040] Specifically, the taper of the longitudinal through cavity 104 of the airflow cavity 1 is consistent with the converging light path of the radiation source.

[0041] Specifically, the inner surfaces of the longitudinal through cavity 104 and the transverse through cavity 106 of the airflow cavity 1 are tangent to each other at their intersections.

[0042] Specifically, the semi-ellipsoidal inner cavity 204 of the radiation cavity inner shell 22 of the radiation cavity 2 has the same outer wall shape as the ellipsoidal reflector used by the radiation source.

[0043] Specifically, the four-way inner shell 12 and the radiation chamber inner shell 22 are made of zirconium bronze, and the remaining parts are made of stainless steel. All parts of the airflow chamber 1 and the radiation chamber 2 are assembled by vacuum furnace brazing.

[0044] The four-way mixing chamber for radiation convection coupled pneumatic heat test involved in this embodiment has the characteristics of the present invention, as demonstrated by its component device description and test verification. Its cross-shaped airflow cavity can simultaneously install two convection heat sources. When used in the radiation convection coupled test device, the irradiation direction of the radiation heat source and the outflow direction of the convection heat source flow field are on the same axis, which can effectively improve the radiation heat efficiency and the radiation uniformity of the receiving surface while improving the integration degree;

[0045] The first air inlet channel and the second air inlet channel of this embodiment can simultaneously introduce high-pressure cold air into the airflow cavity, and by adjusting the flow ratio of the high-pressure cold air and the high-temperature airflow generated by the convection heat source, the convection flow field is subjected to the effects of total temperature regulation, voltage stabilization and rectification.

[0046] The radiation cavity used in this embodiment can effectively cool the outer shell and the core of the radiation heat source, which can effectively increase the service life of the radiation heat source;

[0047] The water cooling structure and the brazing process used in this embodiment can increase the service life of the device itself and can withstand a high temperature and high pressure convection flow field environment.

[0048] The present invention can be applied to a radiation convection coupled aerodynamic thermal test device, and the undisclosed technology is common knowledge of those skilled in the art. Although the present invention has been disclosed as above in the preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications to the technical solution of the present invention by using the above disclosed methods and technical contents without departing from the spirit and scope of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope of the technical solution of the present invention.

[0049] Parts not described in detail in the present invention belong to common knowledge of those skilled in the art.

Claims

1. A four-way mixing chamber for radiation convection coupled aerodynamic thermal testing, characterized in that including an airflow cavity and a radiation cavity; The airflow cavity comprises a four-way inner shell, a first air intake ring and a first connecting structural member; the four-way inner shell is a cross-shaped cylindrical structure composed of a longitudinal through cavity and a transverse through cavity, the longitudinal through cavity is a conical cylinder, and the transverse through cavity is a cylindrical shape with small ends and a large middle; a channel for water cooling and air cooling is arranged between the four-way inner shell and the first connecting structural member outside the four-way inner shell; the cooling gas in the air intake channel finally enters the four-way inner shell through the first air intake ring located at the large end of the longitudinal through cavity; The radiation cavity comprises a radiation cavity inner shell, a second air intake ring and a second connecting structure; the radiation cavity inner shell is a semi-ellipsoidal structure, having a semi-ellipsoidal inner cavity, and the small end of the semi-ellipsoidal inner cavity is connected to the radiation source through the second air intake ring; a channel for water cooling and air cooling is provided between the radiation cavity inner shell and the second connecting structure, and the cooling gas in the air intake channel enters the radiation cavity inner shell through the second air intake ring and the air cooling channel; During the test, the airflow cavity and the radiation cavity are fixedly connected, and the longitudinal through cavity of the airflow cavity coincides with the axis of the semi-ellipsoid inner cavity; Convection heat sources are installed at both ends of the transverse cavity, and the irradiation direction of the radiation heat source and the outflow direction of the convection heat source flow field are on the same axis.

2. The four-way mixing chamber for radiation convection coupled pneumatic thermal testing according to claim 1 is characterized in that: The first connecting structure comprises a small end flange, a cross housing, an upstream flange, and a large end flange; The outer wall surface of the four-way inner shell has a rib structure; the four-way outer shell is wrapped around the outer side of the four-way inner shell, and the cavity formed between the inner wall surface and the ribs of the outer wall surface of the four-way inner shell is the first water cooling channel; the small end flange is installed on the small end side of the longitudinal cavity of the four-way inner shell, the outer wall surface of the flange is provided with a first water outlet channel, and the inner wall surface is provided with a first annular water collecting trough; the upstream flange is installed on both sides of the transverse cavity of the four-way inner shell, with a total of two pieces, the outer wall surface of the flange is provided with a first water inlet channel, and the inner wall surface is provided with a first annular water collecting trough; the large end flange is installed on the large end side of the longitudinal cavity of the four-way inner shell, the outer wall surface of the flange is provided with a first water outlet channel and a first air inlet channel, and the inner wall surface is provided with a first annular water collecting trough and a first air collecting trough; the first air inlet ring is installed on the inner side of the first air collecting trough of the large end flange, and a number of first air inlet holes are evenly distributed thereon.

3. The four-way mixing chamber for radiation convection coupled pneumatic thermal testing according to claim 2 is characterized in that: The first air intake ring is an equal-diameter circular ring, and the inlet direction of the first air intake hole on the outer circumferential surface of the first air intake ring is the same as the radial direction, and the outlet direction on the inner circumferential surface of the first air intake ring is at a 45° angle to the axis of the first air intake ring, and there is a rounded transition between the two, and the radius of the transition rounded corner on the central axis of the first air intake hole is not less than the thickness of the first air intake ring.

4. The four-way mixing chamber for radiation convection coupled pneumatic thermal testing according to claim 2 is characterized in that: The sum of the cross-sectional areas of the first air inlet holes is equal to the sum of the cross-sectional areas of the first air inlet passages.

5. The four-way mixing chamber for radiation convection coupled pneumatic thermal testing according to claim 1 is characterized in that: The taper of the longitudinal through cavity is consistent with the converging light path of the radiation source.

6. The four-way mixing chamber for radiation convection coupled pneumatic thermal testing according to claim 1 is characterized in that: The inner surfaces of the longitudinal through cavity and the transverse through cavity are tangent to each other at their junction.

7. The four-way mixing chamber for radiation convection coupled pneumatic thermal testing according to claim 1 or 2, characterized in that: The second connecting structure comprises a connecting flange, a radiation cavity shell, and a radiation flange; Among them, the outer wall surface of the radiation cavity inner shell has ribs, and an air cooling channel is opened along the symmetry axis at the tip of the ellipsoid; the radiation cavity outer shell is wrapped around the outer side of the radiation cavity inner shell, and the channel between its inner wall surface and the ribs of the outer wall of the radiation cavity inner shell forms a second water cooling channel; the connecting flange is installed at the large end of the radiation cavity inner shell, and a second water outlet channel is opened on its circumferential outer wall surface, and a second annular water collecting groove is opened on the inner wall surface; the radiation flange is installed at the small end of the radiation cavity inner shell, and a second water inlet channel and a second air inlet channel are opened on the circumferential outer wall surface of the flange, and a second annular water collecting groove and a second air collecting groove are opened on the inner wall surface, and a radiation source mounting hole is opened on the end face close to the second air collecting groove along the symmetry axis; the second air inlet ring is installed on the inner side of the second air collecting groove of the radiation flange, and a number of second air inlet holes are evenly distributed on it.

8. The four-way mixing chamber for radiation convection coupled pneumatic thermal testing according to claim 7 is characterized in that: The second air inlet ring is in a 45° cone with the axis of the radiation cavity, and the second air inlet holes distributed thereon are perpendicular to the surface of the second air inlet ring.

9. The four-way mixing chamber for radiation convection coupled pneumatic thermal testing according to claim 7, characterized in that: The sum of the cross-sectional areas of the second air inlet holes is equal to the sum of the cross-sectional areas of the second air inlet channels.

10. The four-way mixing chamber for radiation convection coupled pneumatic thermal testing according to claim 7, characterized in that: The sum of the number and the cross-sectional area of ​​the second air intake channels is respectively greater than the sum of the number and the cross-sectional area of ​​the first air intake channels.

11. The four-way mixing chamber for radiation convection coupled pneumatic thermal testing according to claim 1, characterized in that: The semi-ellipsoid inner cavity has the same outer wall shape as the ellipsoid reflector used by the radiation source.

12. The four-way mixing chamber for radiation convection coupled pneumatic thermal testing according to claim 1, characterized in that: The four-way inner shell and the radiation chamber inner shell are made of zirconium bronze, and the remaining parts are made of stainless steel. All parts of the airflow chamber and the radiation chamber are assembled by vacuum furnace brazing.

Images