CN112595740A - Independent multi-point quartz lamp heat checking device based on focusing heating - Google Patents
Independent multi-point quartz lamp heat checking device based on focusing heating Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/60—Investigating resistance of materials, e.g. refractory materials, to rapid heat changes
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Abstract
The invention discloses an independent multi-point quartz lamp heat checking device based on focusing heating, which can carry out remote continuous non-contact controllable heating on a heating surface or point of a tested sample, overcomes the defects of high cost, large noise pollution, difficult control of temperature distribution and lifting rate, low safety and incapability of realizing gradient heat shock of an isothermal heat cycle test device of the traditional gas heat shock test device, and overcomes the defects of low efficiency, low temperature rise, low upper temperature limit, short continuous heating time, poor adaptability and the like of the traditional quartz lamp heating device. Meanwhile, gradient or isothermal thermal shock in a large range can be realized by adjusting the heating power, the heating distance and the modular splicing number of the quartz lamps. Therefore, the invention realizes an economical, safe, clean, quiet, flexible and efficient gradient thermal shock test device.
Description
Technical Field
The invention relates to an independent multi-point quartz lamp heat assessment device based on focusing heating, which is suitable for independent multi-point heating experiments with small-area/local complex special-shaped structures, the temperature of each point can be adjusted according to the requirement, and the temperature generated by the device is higher than the upper limit of the temperature of the traditional quartz lamp due to the focusing effect, so that the device can be used for extreme heat environment test simulation of hypersonic aircrafts, aero-engines and the like.
Background
In recent years, the hypersonic aircrafts in various countries in the world are more and more emphasized, new breakthroughs are sought in the development of the hypersonic aircrafts in China, the pneumatic heating phenomenon after the hypersonic aircrafts fly is very serious, and when the aircrafts fly at Mach number 3, the surface stagnation temperature reaches 500 ℃; the temperature of the leading edge of the hypersonic cruise missile with the Mach number of 8-9 can exceed 1200 ℃. The high temperatures generated by aerodynamic heat can reduce the strength limit of the material and the load-bearing capacity of the aircraft structure, causing thermal deformations in the aircraft structure, destroying the aerodynamic shape of the components and affecting flight safety. In order to ensure the safety of the high-speed aircraft and confirm whether the aircraft material/structure can withstand the thermal shock and high-temperature thermal stress damage generated during high-speed flight, static and dynamic pneumatic thermal simulation tests or thermal-load combined tests must be carried out on the materials and structures used by the high-speed aircraft. The heating condition of the aircraft structure in high-speed flight is simulated, and the influence of the change of high-temperature mechanical property parameters such as the thermal strength, the thermal stress, the thermal deformation, the thermal expansion amount and the like of the material on the flight safety under the transient thermal shock condition is tested and analyzed.
At present, for the problem of a large-scale complicated curved surface pneumatic heating experiment of a hypersonic aircraft, customized heating equipment is often adopted, a support adaptive to the required heating surface is built according to the required heating surface, and a bare quartz lamp heating pipe is arranged between the supports to heat and test the curved surface. Wherein, the quartz lamp heating tube is not forced to be cooled; the electric wire of the quartz lamp tube is directly connected to the heating control power supply bus. In the experimental process, the heating curved surface is firstly pushed into a bracket of the heating equipment. The conventional heating method has the following problems:
1. because of the use of bare quartz lamp heating tubes, the back radiation of the tube cannot be efficiently utilized in the heating process.
2. The single customized device lacks adaptability to different types and specifications of single-point pneumatic heating tests.
3. The distribution of the temperature field of the pneumatic heating of the hypersonic aircraft is complex, the compiling difficulty of a control system is high for the customized equipment, and the experimental period is long.
4. The temperature and heat flux of the traditional quartz lamp can not meet the requirements of some extreme working conditions.
Meanwhile, in the past decades, the research on the thin film substrate system has become one of the subjects in the development of the material science and engineering fields, and the solid thin film has been successfully applied to various engineering systems in many fields such as electronics, information, aerospace, medicine, and the like, and has realized various functions. Such as thin film devices in integrated circuits, thin film sensors in flexible microelectromechanical systems, thermal barrier coatings on the surface of high temperature hot end components, and abrasion resistant coatings on the surface of tribological wear parts. However, the mismatch of the properties of the film material in the film substrate system and the substrate material itself often causes the film to generate enough internal stress, resulting in delamination, cracking, or even failure of the film. For high-temperature thermal insulation coatings represented by thermal barrier coatings, internal stress caused by thermal mismatch is one of main causes of peeling failure of coating systems, and thermal shock performance is a main experimental means for evaluating service performance of the high-temperature thermal insulation coatings.
At present, the thermal shock performance of the high-temperature thermal insulation coating is mostly finished by a gas thermal shock test device or an isothermal thermal cycle test device. The basic principle of the gas thermal shock test device is that a high-temperature flame spray gun is used for generating high-temperature high-speed flame to directly heat a tested sample, meanwhile, compressed air is used for cooling the back of the sample, heating is stopped after the sample is kept for a period of time, the compressed air is continuously used for cooling the tested sample to the normal temperature, one-time thermal shock is completed, and then the thermal shock test under the temperature gradient environment is realized through circulation. However, taking the thermal barrier coating as an example, under the conditions that the fuel gas is heated to 1250 ℃, the temperature is kept for 5min, the compressed air is forcibly cooled to the normal temperature, and 15% of the surface is stripped to be determined as failure, the thermal shock life of the thermal barrier coating can reach more than 8000 times, and a complete experiment needs to take months, which brings great difficulty to the feasibility and repeatability of the experiment operation. In general, the conventional thermal shock performance evaluation method has the following problems:
1. the fuel demand is very large, and the cost is high;
2. the fuel gas heating mode mainly comprising hydrogen-oxygen or oxygen-acetylene has great potential safety hazard;
3. harmful polluting gas is easily generated in a gas heating mode, and the noise pollution is serious;
4. the time is too long and the efficiency is low.
The isothermal thermal cycle test is another thermal shock performance evaluation means different from a gas thermal shock test, and is based on the principle that a sample to be tested is directly placed in an isothermal high-temperature environment, is subjected to heat preservation for a period of time, is quickly taken out, and is subjected to blowing cooling by compressed air or is put into water for water quenching cooling. Compared with a gas thermal shock test device, the isothermal thermal cycle test device has no large fuel requirement, potential safety hazard and noise pollution, and the efficiency is greatly improved under the condition of water quenching cooling. However, the high-temperature thermal insulation coating working in a real service environment has the outer surface temperature of 1200-1700 ℃ due to the self thermal insulation effect and the air film cooling effect of the coating, and the inner surface temperature of the coating contacting with the substrate is only 800-900 ℃. This results in a temperature gradient of 300-900 ℃ in the thickness direction inside the thermal barrier coating of 300-500 μm, and recent studies show that the temperature gradient has a crucial influence on the service performance of the high-temperature thermal barrier coating. However, the isothermal thermal cycle test apparatus cannot achieve a thermal shock test considering a temperature gradient.
At present, a test device which can overcome a plurality of defects of a gas thermal shock test device and can realize thermal shock test under temperature gradient is not developed successfully. In view of the above, it is necessary to develop an economical, safe, clean, quiet and efficient programmable high temperature heating apparatus.
Disclosure of Invention
In order to solve the problems, the invention provides an independent multi-point quartz lamp thermal assessment device based on focusing heating, which has the characteristics of compact structure, stable performance, large-scale modular splicing, easy and flexible temperature control, better efficiency and higher upper temperature limit.
The invention is realized by adopting the following technical scheme:
an independent multi-point quartz lamp heat assessment device based on focusing heating comprises a sheet metal outer cover box body, a quartz lamp box base and a plurality of quartz lamp boxes, wherein the quartz lamp box base and the plurality of quartz lamp boxes are arranged in the sheet metal outer cover box body; the quartz lamp box is supported on the quartz lamp box base through a quartz lamp box upper cover and fixed on the quartz lamp box base through the quartz lamp box upper cover, wiring holes are formed in the quartz lamp box upper cover, quartz lamp beads can be conveniently connected with electricity, a plurality of quartz lamp filaments are connected into the quartz lamp box, the lower surface of the lamp box is a convex lens made of quartz glass, and parallel light emitted by the lamp beads in the quartz lamp box is converged to one point, so that the effect of single-point heating is achieved;
an upper cooling liquid pipeline and a lower cooling liquid pipeline in the metal plate box body are respectively arranged in the metal plate outer cover box body from top to bottom, an upper cooling liquid pipeline water inlet and an upper cooling liquid pipeline water outlet are formed in the upper cooling liquid pipeline in the metal plate box body, and a lower cooling liquid pipeline water inlet and a lower cooling liquid pipeline water outlet are formed in the lower cooling liquid pipeline in the metal plate box body.
The invention is further improved in that the height of the quartz lamp box is larger than the thickness of the quartz lamp box base.
The invention is further improved in that the diameter of the upper cover of the quartz lamp box is larger than the width of the slide way.
The quartz lamp box is further improved in that the upper cover of the quartz lamp box is also provided with a metal plate box body upper wall surface threaded hole, so that a bolt can be screwed in conveniently to enable the quartz lamp box to be screwed and fixed on the quartz lamp box.
The invention is further improved in that four metal plate box upper wall surface threaded holes are formed in the upper surface of the metal plate outer cover box body, and the metal plate outer cover box body is fixed with an external suspension instrument and can be suspended above a test piece, so that the distance between the metal plate outer cover box body and the test piece is adjustable.
The invention is further improved in that the upper cover of the quartz lamp box is made of high-temperature ceramic materials, the side wall of the quartz lamp box is made of quartz glass, and heat-resistant reflective coating materials are coated in the quartz lamp box, so that the useful power of the quartz lamp is enhanced.
The invention is further improved in that the sheet metal outer cover box body is made of stainless steel sheet metal through bending.
The invention has the further improvement that the side wall of the sheet metal outer cover box body is also provided with a front sheet metal box body side wall surface clamping groove and a rear sheet metal box body side wall surface clamping groove, and the clamping grooves are used for inserting a piece of heat-insulating mullite for placing a test piece above the mullite and carrying out a heating experiment in the sheet metal outer cover box body.
The invention has at least the following beneficial technical effects:
1. the quartz lamp heating mode belongs to remote non-contact heating, the principle is that electric energy is input and converted into a high-efficiency heat source for infrared radiation, compared with gas heating, the distribution, the size and the lifting speed of the temperature of the quartz lamp are greatly improved, and the quartz lamp has the advantages of being quiet, clean and the like;
2. and a water-cooling forced convection heat exchange mode is adopted for the box body, so that the heat damage of the quartz lamp tube and the experimental box body is effectively reduced.
3. The power of each independent quartz lamp tube is independently controlled by the control system, and the heating of the device is easy to control and adjust on a large scale.
4. The quartz lamp box upper cover and the side surfaces are filled with the reflective coating, so that the irradiation influence of heating light on the rear side wall surface is reduced, the irradiation intensity of the front irradiated surface is further enhanced, and the heating efficiency of the heating surface is improved.
5. The modular design concept, control theory and independent cooling units are adopted. Meanwhile, in the heating process of the single device, the temperature is constantly in a stable state during normal work. Compared with the traditional quartz lamp heating technology, the large-scale splicing and combination can be realized, and the quartz lamp heating technology can be applied to heating occasions with large areas and complex curved surfaces.
6. The lower bottom surfaces of the nine quartz lamp boxes are single-side convex lenses made of quartz glass, and light rays which are approximately parallel originally are focused to one point through refraction, so that the heat flux density of the single point is greatly enhanced, and the test piece reaches the temperature which cannot be reached by the traditional quartz lamp set.
In summary, the invention discloses an independent multi-point quartz lamp thermal examination device based on focusing heating, which can carry out remote continuous non-contact controllable heating on a heating surface or point of a tested sample, overcomes the defects that the traditional gas thermal shock experimental device is high in cost, large in noise pollution, difficult to control temperature distribution and lifting rate, low in safety and incapable of realizing gradient thermal shock, and overcomes the defects that the traditional quartz lamp heating device is low in efficiency, low in temperature rise, low in upper limit of temperature, short in continuous heating time, poor in adaptability and the like. Meanwhile, gradient or isothermal thermal shock in a large range can be realized by adjusting the heating power, the heating distance and the modular splicing number of the quartz lamps. Therefore, the invention realizes an economical, safe, clean, quiet, flexible and efficient gradient thermal shock test device.
Drawings
Fig. 1 is an overall view of the present invention.
Fig. 2 (a) - (d) are front, rear, bottom and top views, respectively, of the present invention.
Fig. 3 is a left side perspective view.
Fig. 4 is a cross-sectional view C-C of fig. 3.
Fig. 5 is a front view.
Fig. 6 (a) and (B) are cross-sectional views a-a and B-B of fig. 5, respectively.
Fig. 7 is a perspective view of the light box.
Description of reference numerals:
the lamp box comprises a metal plate outer cover box body, a quartz lamp box base, a quartz lamp box body, a quartz lamp box cover, a quartz lamp box upper cover, a quartz lamp box side wall, a lamp box lower surface, an upper cooling liquid pipeline water inlet, an upper cooling liquid pipeline water outlet, a lower cooling liquid pipeline water inlet, a lower cooling liquid pipeline water outlet, a metal plate box body side wall surface clamping groove, a metal plate box body upper wall surface threaded hole, a quartz lamp filament and a lamp base, wherein the metal plate box body upper wall surface threaded hole is formed in 10.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
As shown in fig. 1, 2 and 3, the independent multi-point quartz lamp heat examination device based on focusing heating provided by the invention comprises a sheet metal outer cover box body 1, a quartz lamp box base 2, a quartz lamp box 3, a quartz lamp box upper cover 4, a quartz lamp box side wall 5, a lamp box lower surface 6, an upper cooling liquid pipeline 7 in the sheet metal box body, a lower cooling liquid pipeline 8 in the sheet metal box body, a sheet metal box side wall surface clamping groove 9, a sheet metal box body upper wall surface threaded hole 10 and a quartz lamp filament 11.
Wherein, quartz lamp house seat 2 links firmly with panel beating dustcoat box 1, and quartz lamp house seat 2 below, panel beating dustcoat box 1 is inside to be drawn empty.
Be provided with three quartz lamp house slide on quartz lamp house seat 2, nine quartz lamp house 3 are equipped with on it, quartz lamp house seat 2 highly is greater than quartz lamp house seat 2's thickness, quartz lamp house upper cover 4's diameter is greater than quartz lamp house slide width, quartz lamp house 3 supports on quartz lamp house seat 2 through quartz lamp house upper cover 4, the wiring hole has been arranged on quartz lamp house upper cover 4, the quartz lamp pearl of being convenient for connects the electricity, wall screw hole 10 on the panel beating box has still been arranged, the screw in bolt of being convenient for makes the lamp house screw up fixedly on the slide. In addition, a plurality of quartz lamp filaments 11 can be connected into the quartz lamp box 3 according to the requirement. The quartz lamp box upper cover 4 is made of high-temperature ceramic materials, the quartz lamp box side wall 5 is made of quartz glass, and heat-resistant reflective coating materials are coated inside the quartz lamp box upper cover to enhance the useful power of the quartz lamp. The lower surface 6 of the lamp box is a convex lens made of quartz glass, and parallel light emitted by lamp beads in the lamp box is converged to one point, so that the effect of single-point heating is achieved.
The sheet metal outer cover box body 1 is made of stainless steel, and an upper cooling liquid pipeline 7 and a lower cooling liquid pipeline 8 in the sheet metal box body are respectively arranged in the sheet metal outer cover box body 1 from top to bottom. Cooling water enters from the upper cooling liquid pipeline water inlet 7-a and the lower cooling liquid pipeline water inlet 8-a simultaneously, and flows out from the rear upper cooling liquid pipeline water outlet 7-b and the rear lower cooling liquid pipeline water outlet 8-b after winding the sheet metal outer cover box body 1 for a circle. The upper surface of the sheet metal housing box body 1 is provided with four sheet metal box body upper wall surface threaded holes 10 which are used for fixing with an external suspension instrument, so that the sheet metal housing box body can be suspended above a test piece, and the distance between the sheet metal housing box body and the test piece can be adjusted. The side wall of the sheet metal outer cover box body 1 is also provided with a front sheet metal box body side wall clamping groove and a rear sheet metal box body side wall clamping groove 9, the heat-insulating mullite is inserted, a test piece can be placed above the mullite, and a heating experiment is carried out in the box body.
Furthermore, the length of the lamp tube group is changed by adjusting the number of the lamp tube group, and the external structural member is adaptively changed, so that the size and the power of a single module of the lamp are improved. The shape of the lamp tube interlayer is changed, and the structural member is adaptively changed, so that the purpose of adaptively changing the required heating surface is achieved. And spraying heat insulating coating on partial surfaces of the structural member and the lamp tube so as to reduce the temperature of partial parts during actual operation. The number and the diameter of cooling liquid inflow and outflow ports are adjusted, the arrangement range and the distance of internal cooling liquid pipelines are adjusted, and the cooling efficiency of the cooling liquid is improved.
Furthermore, the whole device can be fixed by materials which can resist the temperature of more than 100 ℃ at the normal working temperature (below 1800 ℃). And a cooling channel is adopted for protecting the side wall surface of the box body.
The electrical lines in the lamp were high temperature fiberglass braided insulated wires. The quartz lamp tube adopts a tungsten filament halogen heating tube, the rated voltage is 220V, the rated power is 2KW, the quartz lamp tube can be adjusted and customized, the heating temperature is as high as 3300K, the radiation energy is stable, the remote rapid heating at 1800 ℃ can be realized, the quartz lamp tube is not influenced by the surrounding environment, the quartz lamp tube is only effective to a radiated object, and the power of the halogen lamp can be changed by adjusting the power supply. Meanwhile, the heating mode belongs to electric control non-contact heating, and has the advantages of economy, safety, cleanness, quietness and high efficiency, and the service life is as long as more than 5000 hours.
The heating lamp is characterized in that the cooling pipeline inside the heating lamp, the lamp holder and the quartz lamp mounting end seat are made of the same material and have high heat conductivity coefficient and low thermal expansion coefficient.
The sheet metal shell is made of stainless steel.
The invention provides an independent multi-point quartz lamp thermal examination device based on focusing heating, which comprises the following use methods:
the method comprises the following steps of putting the device right, checking whether a cooling pipeline of the test device is complete, nondestructive and free of blockage, checking whether oil stains and shelters exist on a quartz lamp tube, and checking whether an electric circuit is short-circuited and exposed. And when all the items meet the requirements, completing equipment safety inspection.
And step two, slowly injecting cooling water from the water inlet, and observing whether bubbles exist in the flowing water or not when the cooling water in the water outlet flows out. When there are no bubbles in the outflow water, the flow speed of the cooling water is increased. When the cooling water flows out stably and without pulsation from the outflow port, the device can be placed at a correct position according to the required heating angle, and the cooling water injection is completed.
And step three, switching on a power supply, preheating the lamp tube for one minute in advance according to the actual working condition, and observing whether the equipment has problems.
And step four, entering an experimental stage, controlling the heating power of the lamp tube by controlling the signal change in the power supply, and realizing long-time heating or high-speed isothermal impact circulation.
And step six, after the test is finished, firstly closing the power supply system, and stopping injecting the cooling liquid after the equipment is cooled to the room temperature. And finally, discharging redundant cooling water in the pipeline and finishing the heating process.
While the invention has been described in detail with reference to specific embodiments thereof, it will be understood by those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. An independent multi-point quartz lamp heat checking device based on focusing heating is characterized by comprising a sheet metal outer cover box body (1), a quartz lamp box base (2) and a plurality of quartz lamp boxes (3), wherein the quartz lamp box base (2) is arranged in the sheet metal outer cover box body (1); wherein,
a plurality of quartz lamp box slideways arranged in parallel are arranged on each quartz lamp box slideway, a plurality of quartz lamp boxes (3) are arranged on each quartz lamp box slideway, each quartz lamp box (3) is supported on each quartz lamp box base (2) through a quartz lamp box upper cover (4), each quartz lamp box is fixed on each quartz lamp box base (2) through each quartz lamp box upper cover (4), wiring holes are formed in each quartz lamp box upper cover (4), quartz lamp beads can be conveniently connected with electricity, a plurality of quartz lamp filaments (11) are connected into each quartz lamp box (3), the lower surface (6) of each lamp box is a convex lens made of quartz glass, parallel light emitted by the lamp beads in each quartz lamp box (3) is converged to one point, and therefore the effect of single-point heating is achieved;
an upper cooling liquid pipeline (7) in the sheet metal box body and a lower cooling liquid pipeline (8) in the sheet metal box body are respectively arranged in the sheet metal outer cover box body (1) from top to bottom, an upper cooling liquid pipeline water inlet (7-a) and an upper cooling liquid pipeline water outlet (7-b) are arranged on the upper cooling liquid pipeline (7) in the sheet metal box body, and a lower cooling liquid pipeline water inlet (8-a) and a lower cooling liquid pipeline water outlet (8-b) are arranged on the lower cooling liquid pipeline (8) in the sheet metal box body.
2. The independent multi-point quartz lamp thermal examination device based on focused heating as claimed in claim 1, characterized in that the height of the quartz lamp box (3) is larger than the thickness of the quartz lamp box base (2).
3. The independent multi-point quartz lamp thermal examination device based on focused heating as claimed in claim 1, characterized in that the diameter of the quartz lamp box upper cover (4) is larger than the width of the slide way.
4. The independent multi-point quartz lamp thermal examination device based on focusing heating as claimed in claim 1, wherein the quartz lamp box upper cover (4) is further provided with a sheet metal box upper wall threaded hole (10) for screwing a bolt to tighten and fix the quartz lamp box (3) on the quartz lamp box.
5. The independent multi-point quartz lamp thermal assessment device based on focusing heating is characterized in that four sheet metal box upper wall surface threaded holes (10) are formed in the sheet metal outer cover box body (1) and are used for being fixed with an external suspension instrument to enable the sheet metal outer cover box body to be suspended above a test piece, and therefore the distance between the sheet metal outer cover box body and the test piece is adjustable.
6. The independent multi-point quartz lamp thermal examination device based on focused heating as claimed in claim 1, wherein the quartz lamp box upper cover (4) is made of high temperature ceramic material, the quartz lamp box side wall (5) is made of quartz glass, and a heat-resistant reflective coating material is coated inside the quartz lamp box upper cover to enhance the useful power of the quartz lamp.
7. The independent multi-point quartz lamp thermal examination device based on focusing heating as claimed in claim 1, characterized in that the sheet metal outer cover box body (1) is made of stainless steel sheet metal through bending.
8. The independent multi-point quartz lamp thermal examination device based on focusing heating is characterized in that the side wall of the sheet metal outer cover box body (1) is further provided with a front sheet metal box body side wall clamping groove (9) and a rear sheet metal box body side wall clamping groove (9), the clamping grooves are used for inserting a piece of heat-insulating mullite for placing a test piece above the mullite, and a heating experiment is carried out in the sheet metal outer cover box body (1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011503947.6A CN112595740A (en) | 2020-12-17 | 2020-12-17 | Independent multi-point quartz lamp heat checking device based on focusing heating |
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| CN202011503947.6A CN112595740A (en) | 2020-12-17 | 2020-12-17 | Independent multi-point quartz lamp heat checking device based on focusing heating |
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| CN112595740A true CN112595740A (en) | 2021-04-02 |
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| CN202011503947.6A Pending CN112595740A (en) | 2020-12-17 | 2020-12-17 | Independent multi-point quartz lamp heat checking device based on focusing heating |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114705471A (en) * | 2022-06-07 | 2022-07-05 | 中国飞机强度研究所 | Multi-gradient radiant heat flow field simulation method in aerospace plane test |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114705471A (en) * | 2022-06-07 | 2022-07-05 | 中国飞机强度研究所 | Multi-gradient radiant heat flow field simulation method in aerospace plane test |
| CN114705471B (en) * | 2022-06-07 | 2022-08-26 | 中国飞机强度研究所 | Multi-gradient radiation heat flow field simulation method in aerospace plane test |
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