CN115182815B - Multi-duct variable cycle afterburner with variable geometry - Google Patents
Multi-duct variable cycle afterburner with variable geometry Download PDFInfo
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- CN115182815B CN115182815B CN202210612743.9A CN202210612743A CN115182815B CN 115182815 B CN115182815 B CN 115182815B CN 202210612743 A CN202210612743 A CN 202210612743A CN 115182815 B CN115182815 B CN 115182815B
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- support plate
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- 230000007246 mechanism Effects 0.000 claims abstract description 34
- 238000007789 sealing Methods 0.000 claims description 24
- 239000000446 fuel Substances 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 11
- 238000009792 diffusion process Methods 0.000 description 7
- 239000007921 spray Substances 0.000 description 7
- 238000002156 mixing Methods 0.000 description 3
- 239000003381 stabilizer Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
- F02C3/32—Inducing air flow by fluid jet, e.g. ejector action
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/28—Arrangement of seals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C9/00—Controlling gas-turbine plants; Controlling fuel supply in air- breathing jet-propulsion plants
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
The invention provides a variable geometry multi-duct variable cycle afterburner which comprises a double-layer support plate section front casing, a double-layer support plate section rear casing and a rear duct ejector double-layer casing, wherein a first duct is arranged in the rear duct ejector double-layer casing, a second duct is formed between the double-layer support plate section rear casing and the rear duct ejector double-layer casing, the variable geometry multi-duct variable cycle afterburner further comprises a rear duct ejector adjusting mechanism, the rear duct ejector adjusting mechanism is arranged at the inlet end part of the rear duct ejector double-layer casing, the rear duct ejector adjusting mechanism can slide along the gas flow direction, and the rear duct ejector adjusting mechanism can control the gas flow entering the first duct. The embodiment of the invention can achieve the purpose of controlling the afterburner of the variable cycle engine.
Description
Technical Field
The invention relates to the technical field of aero-engines, in particular to a multi-duct variable-cycle afterburner with variable geometry.
Background
Variable cycle engines vary the engine's thermodynamic cycle by changing certain engine geometries or positions, and there are three main adjustable mechanisms: the mode selector valve, the front duct ejector and the rear duct ejector are the rear duct ejector for the adjustable mechanism of the afterburner part. To achieve a higher range of bypass ratio variation, a new bypass is added to the outermost layer for airflow through the variable cycle engine. Due to the increase of the ducts, the problems of arrangement of an adjustable mechanism, design of a multi-layer casing, structural design of an external fuel spray boom penetrating through the multi-layer casing and the like are brought, and a new structural layout scheme is required to be provided for the afterburner of the variable cycle engine.
Disclosure of Invention
In view of this, the present invention provides a variable geometry multi-duct variable cycle afterburner for controlling a variable cycle engine afterburner.
The invention provides the following technical scheme: the utility model provides a variable geometry's many ducts become circulation afterburner, including double-deck extension board section front housing, double-deck extension board section back housing, back duct ejector double-deck housing, be provided with first duct in the double-deck housing of back duct ejector, form the second duct between double-deck extension board section back housing and the double-deck housing of back duct ejector, variable geometry's many ducts become circulation afterburner still includes back duct ejector adjustment mechanism, set up the entry tip at the double-deck housing of back duct ejector, back duct ejector adjustment mechanism can slide along the gas flow direction, back duct ejector adjustment mechanism can control the gas flow who gets into first duct.
Further, the rear duct ejector adjustment mechanism includes:
The crank penetrates through the front casing of the double-layer support plate section along the radial direction, one end of the crank is arranged at the outer side of the front casing of the double-layer support plate section, and the other end of the crank is arranged at the inner side of the front casing of the double-layer support plate section;
The rocker arm and one end of the crank can drive the crank to rotate;
One end of the connecting rod is connected with the other end of the crank;
The annular sealing valve is arranged at the inlet end part of the double-layer casing of the rear duct ejector and is connected with the other end of the connecting rod, and the annular sealing valve can axially reciprocate under the action of the rocker arm.
Further, the variable geometry multi-duct variable cycle afterburner also includes an actuator cylinder coupled to and capable of driving the rocker arm.
Further, the annular sealing valve comprises a front end face arranged in the vertical direction and a rear end face arranged in the inclined direction, and a plurality of air film holes are formed in the front end face and the rear end face.
Further, the ratio of the gas film hole area of the front end surface to the gas film hole area of the rear end surface is in the range of 0.25 to 0.5.
Further, the rear duct ejector adjusting mechanism is provided with an opening position and a closing position, in the closing position, the rear duct ejector adjusting mechanism is in butt joint with the inlet end of the rear duct ejector double-layer casing, in the opening position, the rear duct ejector adjusting mechanism is arranged at intervals with the inlet end of the rear duct ejector double-layer casing, and a diversion channel communicated with the first duct is formed.
Further, the angle between the axis of the diversion channel and the axis of the first duct is in the range of 35 ° to 45 °.
Further, a circular throttle plate perpendicular to the gas flowing direction is arranged in the second duct, and a plurality of throttle holes are formed in the throttle plate.
Further, the variable geometry multi-duct variable cycle afterburner further comprises a fuel spray rod, wherein the fuel spray rod radially sequentially passes through the rear casing of the double-layer support plate section, the double-layer casing of the rear duct ejector and the support plate diffusion section.
Further, the double-layer support plate section front casing comprises a double-layer support plate section front casing outer layer and a double-layer support plate section front casing inner layer, the double-layer support plate section rear casing comprises a double-layer support plate section rear casing outer layer and a double-layer support plate section rear casing inner layer, the double-layer support plate section front casing outer layer and the double-layer support plate section rear casing outer layer are fixedly connected through flanges, and the double-layer support plate section front casing inner layer and the double-layer support plate section rear casing inner layer are in lap joint seal.
Compared with the prior art, the at least one technical scheme adopted by the invention has the beneficial effects that at least the beneficial effects comprise: dividing the inner side air flow into two paths through an adjustable rear duct ejector adjusting mechanism, and enabling the front 60% of the air passing through the second duct to pass through a casing channel and enter the inner duct in parallel in a total pressure air inlet mode; the rear 40% passes through the inner casing and the diffusion outer ring of the rear duct ejector casing and enters the inner duct in a static pressure mixing mode, so that the aim of controlling the afterburner of the variable cycle engine is fulfilled.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic illustration of a multi-duct variable cycle afterburner;
FIG. 2 is a schematic diagram of circumferential drive source distribution;
FIG. 3 is a schematic view of a rear duct ejector adjustment mechanism and a double-layer casing;
FIG. 4 is a schematic diagram of the mating relationship of the rear duct ejector double-layer casing and the annular sealing valve.
Reference numerals in the drawings: 3. The rear casing of the double-layer support plate section; 4. double-layer casing of rear duct ejector; 5.a rear duct ejector adjustment mechanism; 7. A flat section outer casing; 9. A flat section inner casing; 11. A flat section heat shield; 13. A spray bar; 14. a plate stabilizer; 21. the outer layer of the front casing of the double-layer support plate section; 22. the front casing of the double-layer support plate section is supported; 23. the inner layer of the front casing of the double-layer support plate section; 31. the outer layer of the rear casing of the double-layer support plate section; 32. the rear casing of the double-layer support plate section is supported; 33. the inner layer of the rear casing of the double-layer support plate section; 41. the outer layer of the double-layer casing of the rear duct ejector; 42. the double-layer casing of the rear duct ejector is supported; 43. a double-layer casing inner layer of the rear duct ejector; 44. an orifice; 45. a front annular seal ring; 51. A rocker arm; 52. a crank; 53. a connecting rod; 54. an annular sealing valve; 541. a front end face; 542. a rear end face; 543. c-shaped elastic sealing rings; 61. the outer ring is expanded.
Detailed Description
Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
As shown in fig. 1 to 4, the embodiment of the invention provides a variable geometry multi-duct variable cycle afterburner, which comprises a double-layer support plate section front casing, a double-layer support plate section rear casing 3 and a rear duct ejector double-layer casing 4, wherein a first duct is arranged in the rear duct ejector double-layer casing 4, a second duct is formed between the double-layer support plate section rear casing 3 and the rear duct ejector double-layer casing 4, the variable geometry multi-duct variable cycle afterburner further comprises a rear duct ejector adjusting mechanism 5, the rear duct ejector adjusting mechanism 5 is arranged at the inlet end part of the rear duct ejector double-layer casing 4, the rear duct ejector adjusting mechanism 5 can slide along the gas flow direction, and the rear duct ejector adjusting mechanism 5 can control the gas flow entering the first duct.
The inner side air flow is divided into two paths by an adjustable rear duct ejector adjusting mechanism 5, and the front 60% of the air passing through the second duct passes through a casing channel and is parallel to the inner duct in a total pressure air inlet mode; the rear 40% passes through the inner casing and the diffusion outer ring of the rear duct ejector casing and enters the inner duct in a static pressure mixing mode, so that the aim of controlling the afterburner of the variable cycle engine is fulfilled.
It should be noted that, the embodiment of the present invention further includes a flat section outer casing 7, a round rotating square outer casing, a flat section inner casing 9, a round rotating square inner casing, a flat section heat shield 11, and a round rotating square heat shield, and since the above features are the same as or similar to the features of the prior art, the description thereof will not be repeated here.
The embodiment of the invention can make the structure more compact, realize the capability of changing the larger duct ratio, optimize the flow guiding angle of the linkage ring and open the air film hole on the linkage ring on the basis of the blending scheme so as to meet the requirements of minimum airflow flow and preventing the backflow of fuel gas.
The rear duct injector adjusting mechanism 5 includes a crank 52, a rocker arm 51, a connecting rod 53, and an annular sealing valve 54. The crank 52 is arranged at the front casing of the double-layer support plate section in a penetrating way along the radial direction, one end of the crank 52 is arranged at the outer side of the front casing of the double-layer support plate section, and the other end of the crank 52 is arranged at the inner side of the front casing of the double-layer support plate section; a rocker arm 51 connected to one end of the crank 52 and capable of driving the crank 52 to rotate; a connecting rod 53 having one end connected to the other end of the crank 52; the annular sealing valve 54 is arranged at the inlet end part of the double-layer casing 4 of the rear duct ejector, the annular sealing valve 54 is connected with the other end of the connecting rod 53, and the annular sealing valve 54 can axially reciprocate under the action of the rocker arm 51.
The two cranks 52 penetrate through the front casing support 22 of the two double-layer support plate sections to transmit rotation of the rocker arm 51 to the inside of the two-layer casing, and the annular sealing valve 54 is driven to axially move by the connecting rod 53. The two cranks 52 are symmetrically distributed at 180 deg..
In the embodiment, the support plate section casing is designed in a segmented way, and consists of a double-layer support plate section front casing and a double-layer support plate section rear casing 3, wherein the double-layer design is adopted, and the double-layer support plate section front casing outer layer 21 is connected with a double-layer support plate section front casing inner layer 23 through 16 double-layer support plate section front casing supports 22; similarly, the outer layer 31 of the rear casing of the double-layer support plate section is connected with the inner layer 33 of the rear casing of the double-layer support plate section through the 16 rear casing supports 32 of the double-layer support plate section, the two sections are connected through an outer layer flange, and the inner layer is in lap joint seal.
The variable geometry multi-duct variable cycle afterburner also includes a cylinder coupled to the rocker arm 51 and capable of driving the rocker arm 51 in motion. The present embodiment may employ two rams for closed loop control. The actuator cylinder is a hydraulic driving component, and can be replaced by other components according to different needs and options, and the hydraulic driving component is not limited herein.
The annular seal valve 54 includes a front end face 541 provided in the vertical direction and a rear end face 542 provided in the inclined direction, and the front end face 541 and the rear end face 542 are each provided with a plurality of gas film holes. The ratio of the gas film hole area of the front end face 541 to the gas film hole area of the rear end face 542 is in the range of 0.25 to 0.5. The arrangement ensures the minimum flow area in the duct in the closed state and the uniformity of the air flow entering the inner duct.
The rear duct ejector adjusting mechanism 5 has an opening position and a closing position, in the closing position, the rear duct ejector adjusting mechanism 5 is abutted with the inlet end of the rear duct ejector double-layer casing 4, in the opening position, the rear duct ejector adjusting mechanism 5 is arranged at intervals with the inlet end of the rear duct ejector double-layer casing 4, and a diversion channel communicated with the first duct is formed. The included angle between the axis of the diversion channel and the axis of the first duct ranges from 35 degrees to 45 degrees, a circular throttle plate perpendicular to the gas flowing direction is arranged in the second duct, and a plurality of throttle holes 44 are formed in the throttle plate.
The annular sealing valve 54 and the front section of the outer layer 41 of the double-layer casing of the rear duct ejector are sealed by surface lamination, the matching angle is set to 40 degrees in consideration of airflow flowing, a circle of square throttle holes 44 are formed in the rear section of the outer layer 41 of the double-layer casing of the rear duct ejector to control the flow in the duct, the annular sealing valve 54 is opened upstream, the opening is increased, the circulation capacity is enhanced, the flow rate of the innermost duct in the maximum opening position accounts for 40% of the main flow rate, otherwise, the flow area is reduced, the flow rate in the flow channel is reduced, the front end face 541 and the rear end face 542 of the annular sealing valve 54 are provided with circular air film straight holes, the opening area ratio is 0.25-0.5, and the minimum flow area in the duct and the uniformity of the airflow entering the inner duct in the closed state are ensured; the lower end surface of the annular sealing valve 54 is provided with two grooves and is sealed by adopting a C-shaped elastic sealing ring 543 and the upper surface of the double-layer casing inner layer 43 of the rear duct ejector; the lower end surface of the inner layer 43 of the double-layer casing of the rear duct ejector is sealed with the diffusion outer ring 61 by adopting a front annular sealing ring 45 and a rear annular sealing ring.
Preferably, the front section of the outer layer of the double-layer casing 4 of the rear duct ejector adopts a 40-degree folded angle and an annular sealing valve 54 to adaptively design, airflow is guided to the innermost duct, a second duct formed by the outer layer 41 of the double-layer casing of the rear duct ejector and the inner layer 33 of the double-layer support plate section is used for enabling the airflow to enter in a mode of total flattening travelling air, the flow of the duct is controlled through the design of uniformly distributed orifices 44 in the circumferential direction of a rectangle, and the whole ring formed by the orifices 44 is bent upwards to be riveted with the inner layer 33 of the double-layer support plate section rear casing for fixing.
In the embodiment, the connection supports in the rear casing 3 and the rear duct ejector double-layer casing 4 of the double-layer support plate section are hollow, so that the external oil injection rod is inserted into the stabilizer, and the five-layer casing is totally formed by passing through the rear casing, the rear duct ejector double-layer casing and the one-layer diffusion outer ring of the double-layer support plate section.
Further, the double-layer support plate section front casing support 22 meets the requirement that the crank 52 is arranged in a diamond shape, the double-layer support plate section rear casing support 32 and the rear duct ejector double-layer casing support 42 meet the air flow loss requirement, and therefore streamline design is adopted.
More preferably, the multi-duct variable cycle afterburner with variable geometry further comprises a fuel spray rod 13, wherein the fuel spray rod 13 sequentially penetrates through the double-layer support plate section rear casing 3, the rear duct ejector double-layer casing 4 and the support plate diffusion section along the radial direction.
The embodiment of the invention works as follows: the rocker arm 51 converts the translational motion of the actuator cylinder into rotational motion of the crank 52, which in turn pushes the connecting rod 53 to cause the annular sealing valve 54 to move horizontally, where the content air flow is split into two air flows as indicated by the black arrows in fig. 4; the rear casing 3 of the double-layer support plate section is connected with the rear section of the front casing of the double-layer support plate section through an outer ring flange, and the inner casing layer 33 of the double-layer support plate section is lapped above the inner casing layer 23 of the front casing of the double-layer support plate section. The rear duct ejector double-layer casing 4 and the rear casing 3 of the double-layer support plate section are connected through rear end rivets, the three double-layer casings and the rear duct ejector adjusting mechanism 5 form a whole unit body, and the fuel spray boom 13 penetrates through the double-layer support plate section rear casing 3, the rear duct ejector double-layer casing 4 and the diffusion outer ring 61 to make up five layers of casings and then stretches into the support plate stabilizer 14.
The foregoing description of the embodiments of the invention is not intended to limit the scope of the invention, so that the substitution of equivalent elements or equivalent variations and modifications within the scope of the invention shall fall within the scope of the patent. In addition, the technical characteristics and technical scheme, technical characteristics and technical scheme can be freely combined for use.
Claims (8)
1. The utility model provides a variable geometry's multi-duct variable cycle afterburner, including double-deck extension board section front casing, double-deck extension board section back casing (3), back duct ejector double-deck casing (4), be provided with first duct in the double-deck casing of back duct ejector (4), form the second duct between double-deck extension board section back casing (3) and the double-deck casing of back duct ejector (4), variable geometry's multi-duct variable cycle afterburner still includes back duct ejector adjustment mechanism (5), set up in the entry tip of back duct ejector double-deck casing (4), back duct ejector adjustment mechanism (5) can slide along the gas flow direction, back duct ejector adjustment mechanism (5) can control the gas flow who gets into first duct;
the rear duct ejector adjusting mechanism (5) comprises:
The crank (52) is arranged at the front casing of the double-layer support plate section in a penetrating way along the radial direction, one end of the crank (52) is arranged at the outer side of the front casing of the double-layer support plate section, and the other end of the crank (52) is arranged at the inner side of the front casing (2) of the double-layer support plate section;
The rocker arm (51) and one end of the crank (52) can drive the crank (52) to rotate;
a connecting rod (53), one end of which is connected with the other end of the crank (52);
The annular sealing valve (54) is arranged at the inlet end part of the double-layer casing (4) of the rear duct ejector, the annular sealing valve (54) is connected with the other end of the connecting rod (53), and the annular sealing valve (54) can axially reciprocate under the action of the rocker arm (51); the annular sealing valve (54) comprises a front end face (541) arranged in the vertical direction and a rear end face (542) arranged in the inclined direction, and the front end face (541) and the rear end face (542) are provided with a plurality of air film holes.
2. The variable geometry multi-duct variable cycle afterburner of claim 1 further comprising an actuator cylinder coupled to the rocker arm (51) and capable of driving the rocker arm (51) in motion.
3. The variable geometry multi-duct variable cycle afterburner of claim 1 wherein the ratio of the gas film hole area of the front face (541) to the gas film hole area of the rear face (542) is in the range of 0.25 to 0.5.
4. The variable geometry multi-duct variable cycle afterburner of claim 1 wherein the rear duct ejector adjustment mechanism (5) has an open position in which the rear duct ejector adjustment mechanism (5) abuts the inlet end of the rear duct ejector double-layer casing (4) and a closed position in which the rear duct ejector adjustment mechanism (5) is spaced from the inlet end of the rear duct ejector double-layer casing (4) and forms a diversion channel in communication with the first duct.
5. The variable geometry multi-duct variable cycle afterburner of claim 4 wherein the angle between the axis of the flow directing channels and the axis of the first duct ranges from 35 ° to 45 °.
6. The variable geometry multiple duct variable cycle afterburner of claim 1 wherein a circular throttle plate is disposed in the second duct perpendicular to the direction of gas flow, the throttle plate having a plurality of orifices (44) disposed therein.
7. The variable geometry multi-duct variable cycle afterburner of claim 1 further comprising a fuel boom passing radially through the double-deck extension back casing (3), the back duct ejector double-deck casing (4) and the extension.
8. The variable geometry multi-duct variable cycle afterburner of claim 1, wherein the double-layer support plate section front casing comprises a double-layer support plate section front casing outer layer (21) and a double-layer support plate section front casing inner layer (23), the double-layer support plate section rear casing (3) comprises a double-layer support plate section rear casing outer layer (31) and a double-layer support plate section rear casing inner layer (33), the double-layer support plate section front casing outer layer (21) and the double-layer support plate section rear casing outer layer (31) are fixedly connected through flanges, and the double-layer support plate section front casing inner layer (23) and the double-layer support plate section rear casing inner layer (33) are lap-joint sealed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210612743.9A CN115182815B (en) | 2022-05-31 | 2022-05-31 | Multi-duct variable cycle afterburner with variable geometry |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210612743.9A CN115182815B (en) | 2022-05-31 | 2022-05-31 | Multi-duct variable cycle afterburner with variable geometry |
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| CN115182815A CN115182815A (en) | 2022-10-14 |
| CN115182815B true CN115182815B (en) | 2024-04-19 |
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| CN202210612743.9A Active CN115182815B (en) | 2022-05-31 | 2022-05-31 | Multi-duct variable cycle afterburner with variable geometry |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115962482B (en) * | 2022-12-29 | 2024-08-30 | 中国航发沈阳发动机研究所 | Afterburner outdoor culvert variable flow area adjusting mechanism |
| CN116293793B (en) * | 2023-04-07 | 2024-08-20 | 北京航空航天大学 | Outer culvert flame stabilizer, rear culvert variable area ejector and afterburner |
| CN116399605B (en) * | 2023-05-10 | 2024-06-07 | 中国航发沈阳发动机研究所 | Afterburner pneumatic characteristic simulation device for testing whole turbine of aero-engine |
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