CN110697076A - Integrated throat model support rod for subsonic velocity shroud ablation test - Google Patents
Integrated throat model support rod for subsonic velocity shroud ablation test Download PDFInfo
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- CN110697076A CN110697076A CN201911001672.3A CN201911001672A CN110697076A CN 110697076 A CN110697076 A CN 110697076A CN 201911001672 A CN201911001672 A CN 201911001672A CN 110697076 A CN110697076 A CN 110697076A
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- model
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- integrated
- connecting rod
- connecting block
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- 238000012360 testing method Methods 0.000 title claims abstract description 54
- 238000002679 ablation Methods 0.000 title claims abstract description 23
- 239000000498 cooling water Substances 0.000 claims abstract description 20
- 238000001816 cooling Methods 0.000 claims abstract description 13
- 230000010354 integration Effects 0.000 claims abstract description 5
- 238000003466 welding Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 33
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 238000013461 design Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 238000004088 simulation Methods 0.000 description 4
- 230000004083 survival effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 230000035899 viability Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- B64F5/00—Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for
- B64F5/60—Testing or inspecting aircraft components or systems
Abstract
The invention discloses an integrated throat model support rod for a subsonic velocity shroud ablation test. The throat shell is installed on the outer side of the model connecting block, the connecting cylinder and the connecting rod are concentrically installed at one end of the model connecting block, and the connecting cylinder is located on the outer side of the connecting rod. The throat casing, the model connecting block, the connecting cylinder and the connecting rod are integrated into a whole in a welding mode, the integration level of the device is increased, and the heating area is reduced. Through the integrated water-cooling structural design among the throat casing, the model connecting block, the connecting cylinder and the connecting rod, the cooling effect of the device is enhanced, the cooling water inlet and outlet interface is simplified, the interface is far away from high-enthalpy airflow, and the reliability of the device in a high-enthalpy airflow state is improved.
Description
Technical Field
The invention relates to an integrated throat model support rod for a subsonic velocity shroud ablation test, and belongs to the field of aerospace craft aerodynamic heat ground simulation test devices.
Technical Field
In a ground simulation test, the technical research on the ablation performance of the heat-proof material on the surface of the model by adopting an arc heating subsonic velocity envelope ablation test technology is a better technical approach. At present, with the establishment and the use of high-enthalpy and high-power electric arc heating equipment, a model development unit puts higher requirements on a pneumatic thermal ground simulation test. The throat structure form used in the existing subsonic velocity shroud ablation test can only adapt to the test with the total enthalpy of airflow below 10MJ/kg, and can not meet the test requirement under the condition of higher total enthalpy of airflow. In addition, the throat for the test is separated from the supporting structure of the model, so that the test device is complex in structure and easy to burn. Therefore, the throat and the model supporting device used in the test are newly designed around the special test requirement of the subsonic speed covering cover under the high enthalpy condition, the integration level of the device is increased, the heating area is reduced, and the survival capability of the device in the high enthalpy airflow state is improved.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the integrated throat model support rod suitable for the subsonic velocity shroud ablation test can be applied to the subsonic velocity shroud ablation test in the aerospace aerodynamic thermal protection ground simulation test.
The technical scheme of the invention is as follows: the utility model provides an integration throat model branch for subsonic speed envelope ablation test, includes throat shell, model connecting block, connecting cylinder and connecting rod, wherein:
the front end of the model connecting block is used for installing a test model, the throat shell is installed on the outer side of the model connecting block and used for forming a sonic throat between the model connecting block and the test spray pipe, the connecting cylinder and the connecting rod are concentrically installed at the rear end of the model connecting block, and the connecting cylinder is located on the outer side of the connecting rod and is shorter than the connecting rod.
Preferably, the throat casing, the model connecting block, the connecting cylinder and the connecting rod have an integrated water cooling structure.
Preferably, the integrated water cooling structure comprises a cooling water inlet channel arranged inside the connecting rod, the channel is communicated with a water storage tank arranged in the model connecting block, a gap is reserved between the outer side of the model connecting block and the throat casing, an annular water tank is arranged on the outer side of the model connecting block, radial cooling water channels are uniformly distributed on two sides of the water tank, the cooling water channel on one side is communicated with the water storage tank, and the cooling water channel on the other side is communicated with the gap between the connecting cylinder and the connecting rod.
Preferably, the outlet of the cooling water channel communicated with the water storage tank is an inclined surface, and the included angle between the inclined surface and the axis of the rear end of the connecting rod shaft ranges from 30 degrees to 60 degrees.
Preferably, the sectional area of the gap between the connecting cylinder and the connecting rod is larger than the minimum sectional area of the gap between the outer side of the model connecting block and the throat casing.
Preferably, the radial sectional area of the annular water tank is not larger than that of the water storage tank, and the radial sectional area of the water storage tank is larger than that of the water inlet channel of the connecting rod.
Preferably, the throat casing is made of red copper, the appearance of the throat casing is a barrel-shaped structure with a flange, the flange structure is fixed on the model connecting block, the front edge of the flange is located on the same plane corresponding to the model connecting block and used for limiting the installation of the throat casing at the bottom of a test model at the front end, and the connecting part of the inner side of the barrel-shaped structure and the flange structure is rounded and chamfered at the outer side.
Preferably, the diameter of the inner edge of the chamfer is not more than the minimum diameter of a base circle expected to be used in all test models, the diameter of the outer edge needs to ensure the throat area requirement at the position, and the chamfer angle is larger than the half-cone angle of the test nozzle.
Preferably, the throat casing inclines outwards relative to the axis of the connecting rod, and the inclination angle is smaller than the half cone angle of the test nozzle.
Preferably, the throat casing, the model connecting block, the connecting cylinder and the connecting rod are integrated into a whole in a welding mode.
The invention has the beneficial effects that:
the throat device and the model supporting device used in the current subsonic velocity shroud ablation test are mutually separated, the structure is complex, the heating surfaces of all the devices exposed in a high-enthalpy flow field environment are more, the structural form of the throat device can only adapt to the test of the total enthalpy of airflow below 10MJ/kg, and the throat device is easy to burn under the high-enthalpy test condition. According to the invention, the throat and the model connecting and supporting device are designed into a whole through an integrated design, so that the heating area can be effectively reduced, and the survival capability of the device is improved.
The device is internally provided with an integrated water cooling structure, and through the design of a rationalized water cooling channel, the cooling effect of the device at the heated concentrated position is enhanced, the integral water flow resistance in the device is reduced, the device is cooled uniformly, and the required cooling water flow is reduced while the cooling efficiency is ensured.
The throat casing is limited to be made of red copper material with high heat conductivity, so that the structural appearance can not be greatly changed under the condition of long-time high enthalpy airflow scouring, and the overall service life of the device is prolonged. The specific appearance design of the test model can enable high enthalpy airflow to form a sound velocity line with stable position only on the surface of the structure, so that the surface of the test model is ensured to be stable subsonic airflow, and the test can be effectively carried out.
Drawings
FIG. 1 is an axial cross-sectional view of an integrated throat model strut;
FIG. 2 is a schematic flow diagram of cooling water flowing through the integrated throat model support rod;
figure 3 is a schematic diagram of the use of the integrated throat model strut.
Detailed Description
The invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The invention provides an integrated throat model support rod for a subsonic velocity shroud ablation test, which comprises a throat shell 1, a model connecting block 2, a connecting cylinder 3 and a connecting rod 4, as shown in figure 1, wherein:
the throat casing 1 is installed on the outer side of the model connecting block 2, the connecting cylinder 3 and the connecting rod 4 are concentrically installed at one end of the model connecting block 2, and the connecting cylinder 3 is located on the outer side of the connecting rod 4 and is shorter than the connecting rod 4 and used for connecting other fixing devices.
Specifically, as shown in fig. 2 and 3, in use, the test model is installed on the other side of the model connecting block 2. After entering from the far end of connecting rod 4, the cooling water reaches the bottom of model connecting block 2 and scatters to all around, cools it through the inside of throat shell 1, flows out from connecting cylinder 3 inboard at last. Through the integrated water-cooling structural design among the throat casing 1, the model connecting block 2, the connecting cylinder 3 and the connecting rod 4, the cooling effect of the device is enhanced, and the cooling water inlet and outlet ports are simplified, so that the survival capability of the device is improved.
The form of an integrated water cooling structure is given below, including setting up the cooling water inlet channel inside the connecting rod, this passageway and the catch basin intercommunication of setting in the model connecting block, leave the gap between the model connecting block outside and the throat shell and set up annular water tank in the outside of model connecting block, this water tank both sides all set up the radial cooling water passageway of equipartition, wherein one side cooling water passageway with catch basin intercommunication, the clearance intercommunication between opposite side cooling water passageway and connecting cylinder and the connecting rod. The outlet of the cooling water channel communicated with the water storage tank is an inclined plane, and the included angle between the inclined plane and the axis of the rear end of the connecting rod shaft is 45 degrees. The sectional area of the gap between the connecting cylinder and the connecting rod is larger than the minimum sectional area of the gap between the outer side of the model connecting block and the outer shell of the throat channel. The radial sectional area of the annular water tank is not larger than that of the water storage tank, and the radial sectional area of the water storage tank is larger than that of the water inlet channel of the connecting rod.
As shown in figures 1 and 3, the throat casing is made of red copper materials, the throat casing is of a barrel-shaped structure with a flange, the flange structure is fixed on the model connecting block, the front edge of the flange is located on the same plane corresponding to the model connecting block and used for limiting the bottom of a test model installed at the front end, and the connecting part of the inner side of the barrel-shaped structure and the flange structure is rounded and chamfered at the outer side. The diameter of the inner edge of the chamfer is not larger than the diameter of the minimum base circle of all expected used test models, the diameter of the outer edge of the chamfer needs to ensure the throat area requirement at the position, and the chamfer angle is larger than the half cone angle of the test spray pipe. The throat shell inclines outwards relative to the axis of the connecting rod, and the inclination angle is smaller than the half cone angle of the test nozzle.
Adopt the welding mode integrated as an organic whole between throat shell 1, model connecting block 2, connecting cylinder 3 and the connecting rod 4, increase the device integration level, reduce heated area, improve the viability of device under high enthalpy air current state.
The description of the composition device and the experimental verification prove that the device has the characteristics, can be used for the subsonic velocity envelope ablation test under the high enthalpy condition, and ensures the reliability of the device under the high enthalpy airflow state. The present invention is not disclosed in the technical field of the common general knowledge of the technicians in this field.
Claims (10)
1. The utility model provides an integration throat model branch for subsonic speed envelope ablation test which characterized in that: including throat shell, model connecting block, connecting cylinder and connecting rod, wherein:
the front end of the model connecting block is used for installing a test model, the throat shell is installed on the outer side of the model connecting block and used for forming a sonic throat between the model connecting block and the test spray pipe, the connecting cylinder and the connecting rod are concentrically installed at the rear end of the model connecting block, and the connecting cylinder is located on the outer side of the connecting rod and is shorter than the connecting rod.
2. The integrated throat model strut for the subsonic envelope ablation test according to claim 1, wherein: the throat casing, the model connecting block, the connecting cylinder and the connecting rod are of an integrated water cooling structure.
3. The integrated throat model strut for the subsonic envelope ablation test according to claim 2, wherein: the integrated water cooling structure comprises a cooling water inlet channel arranged inside the connecting rod, the channel is communicated with a water storage groove arranged in the model connecting block, a gap is reserved between the outer side of the model connecting block and the throat shell, an annular water groove is arranged on the outer side of the model connecting block, radial cooling water channels are uniformly distributed on two sides of the water groove, one side of each cooling water channel is communicated with the water storage groove, and the other side of each cooling water channel is communicated with a gap between the connecting cylinder and the connecting rod.
4. The integrated throat model strut for the subsonic envelope ablation test according to claim 3, wherein: the outlet of the cooling water channel communicated with the water storage tank is an inclined plane, and the included angle between the inclined plane and the axis of the rear end of the connecting rod shaft ranges from 30 degrees to 60 degrees.
5. The integrated throat model strut for the subsonic envelope ablation test according to claim 3, wherein: the sectional area of the gap between the connecting cylinder and the connecting rod is larger than the minimum sectional area of the gap between the outer side of the model connecting block and the outer shell of the throat channel.
6. The integrated throat model strut for the subsonic envelope ablation test according to claim 3, wherein: the radial sectional area of the annular water tank is not larger than that of the water storage tank, and the radial sectional area of the water storage tank is larger than that of the water inlet channel of the connecting rod.
7. The integrated throat model strut for the subsonic envelope ablation test according to claim 1, wherein: the throat casing is made of red copper materials, the appearance of the throat casing is a barrel-shaped structure with a flange, the flange structure is fixed on the model connecting block, the flange front edge and the corresponding position of the model connecting block are located on the same plane and used for limiting the installation at the bottom of a test model at the front end, and the connecting part of the inner side of the barrel-shaped structure and the flange structure is rounded and chamfered at the outer side.
8. The integrated throat model strut for the subsonic envelope ablation test of claim 7, wherein: the diameter of the inner edge of the chamfer is not larger than the diameter of the minimum base circle of all expected used test models, the diameter of the outer edge of the chamfer needs to ensure the throat area requirement of the position, and the chamfer angle is larger than the half cone angle of the test spray pipe.
9. The integrated throat model strut for the subsonic envelope ablation test of claim 7, wherein: the throat casing inclines outwards relative to the axis of the connecting rod, and the inclination angle is smaller than the half cone angle of the test nozzle.
10. The integrated throat model strut for the subsonic envelope ablation test according to claim 1, wherein the throat shell, the model connecting block, the connecting cylinder and the connecting rod are integrated into a whole by welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911001672.3A CN110697076A (en) | 2019-10-21 | 2019-10-21 | Integrated throat model support rod for subsonic velocity shroud ablation test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911001672.3A CN110697076A (en) | 2019-10-21 | 2019-10-21 | Integrated throat model support rod for subsonic velocity shroud ablation test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110697076A true CN110697076A (en) | 2020-01-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911001672.3A Pending CN110697076A (en) | 2019-10-21 | 2019-10-21 | Integrated throat model support rod for subsonic velocity shroud ablation test |
Country Status (1)
| Country | Link |
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| CN (1) | CN110697076A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB822039A (en) * | 1955-06-21 | 1959-10-21 | Union Carbide Corp | Improvements in and relating to the pyrolysis of hydrocarbons and apparatus therefor |
| GB1300145A (en) * | 1970-02-04 | 1972-12-20 | Dfc Corp | Improvements in or relating to gas burners |
| CN203946286U (en) * | 2013-11-19 | 2014-11-19 | 贵州风雷航空军械有限责任公司 | A kind of high-velocity detonation depressurized system |
| CN107860554A (en) * | 2017-12-06 | 2018-03-30 | 中国空气动力研究与发展中心超高速空气动力研究所 | Tail jet Test Integrated model equipment and test method in wind tunnel test |
| CN108168832A (en) * | 2016-12-08 | 2018-06-15 | 中国航空工业集团公司沈阳空气动力研究所 | A kind of throat structure for improving tube wind tunnel experiment Reynolds number |
| CN108263638A (en) * | 2017-12-22 | 2018-07-10 | 中国航天空气动力技术研究院 | A kind of high temperature low consumption abnormity jet pipe |
| CN209102327U (en) * | 2018-11-26 | 2019-07-12 | 中国航天空气动力技术研究院 | A kind of double venturi enthalpy probes for Aerodynamic Heating ground simulation test |
| CN211253079U (en) * | 2019-10-21 | 2020-08-14 | 中国航天空气动力技术研究院 | Integrated throat model support rod for subsonic velocity shroud ablation test |
-
2019
- 2019-10-21 CN CN201911001672.3A patent/CN110697076A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB822039A (en) * | 1955-06-21 | 1959-10-21 | Union Carbide Corp | Improvements in and relating to the pyrolysis of hydrocarbons and apparatus therefor |
| GB1300145A (en) * | 1970-02-04 | 1972-12-20 | Dfc Corp | Improvements in or relating to gas burners |
| CN203946286U (en) * | 2013-11-19 | 2014-11-19 | 贵州风雷航空军械有限责任公司 | A kind of high-velocity detonation depressurized system |
| CN108168832A (en) * | 2016-12-08 | 2018-06-15 | 中国航空工业集团公司沈阳空气动力研究所 | A kind of throat structure for improving tube wind tunnel experiment Reynolds number |
| CN107860554A (en) * | 2017-12-06 | 2018-03-30 | 中国空气动力研究与发展中心超高速空气动力研究所 | Tail jet Test Integrated model equipment and test method in wind tunnel test |
| CN108263638A (en) * | 2017-12-22 | 2018-07-10 | 中国航天空气动力技术研究院 | A kind of high temperature low consumption abnormity jet pipe |
| CN209102327U (en) * | 2018-11-26 | 2019-07-12 | 中国航天空气动力技术研究院 | A kind of double venturi enthalpy probes for Aerodynamic Heating ground simulation test |
| CN211253079U (en) * | 2019-10-21 | 2020-08-14 | 中国航天空气动力技术研究院 | Integrated throat model support rod for subsonic velocity shroud ablation test |
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