CN113107706B - Binary vector spray pipe outer cover structure and design method thereof - Google Patents
Binary vector spray pipe outer cover structure and design method thereof Download PDFInfo
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- CN113107706B CN113107706B CN202110448533.6A CN202110448533A CN113107706B CN 113107706 B CN113107706 B CN 113107706B CN 202110448533 A CN202110448533 A CN 202110448533A CN 113107706 B CN113107706 B CN 113107706B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K1/00—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
- F02K1/78—Other construction of jet pipes
- F02K1/82—Jet pipe walls, e.g. liners
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K1/00—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
- F02K1/78—Other construction of jet pipes
Abstract
The application belongs to the technical field of binary vector spray pipe outer cover design, concretely relates to binary vector spray pipe outer cover structure, include: the rear section annular cover is sleeved on the periphery of the binary vectoring nozzle, the tail end of the rear section annular cover is connected with the outlet end of the expansion section of the binary vectoring nozzle, and a set angle alpha is formed between the rear section annular cover and the expansion section; the middle section annular cover is sleeved on the periphery of the binary vector spray pipe, the tail end of the middle section annular cover is rotationally connected with the front end of the rear section annular cover, and the inner side of the middle section annular cover is rotationally connected with the expansion section; the front section annular cover is sleeved on the periphery of the binary vectoring nozzle, the tail end of the front section annular cover is partially overlapped with the front end of the middle section annular cover and is in sliding connection with the middle section annular cover, and the inner side of the front section annular cover is in rotating connection with the circular-square section of the binary vectoring nozzle. In addition, the invention relates to a design method of the binary vector nozzle outer cover structure.
Description
Technical Field
The application belongs to the technical field of binary vector spray pipe outer cover design, and particularly relates to a binary vector spray pipe outer cover structure and a design method thereof.
Background
The binary vector spray pipe of the aircraft engine can provide vector thrust, has good stealth performance and is more and more widely applied.
The binary vector nozzle of the engine mainly comprises a circular-square-turn section, a convergence section hinged with the outlet end of the circular-square-turn section and an expansion section hinged with the outlet end of the convergence section, wherein the convergence section and the expansion section can perform contraction, expansion and deflection motion in a three-dimensional space.
In order to protect the binary vector nozzle and the internal parts of the engine thereof from being directly damaged by external force and rectify the outside, reduce the resistance of the rear body of the airplane and ensure the stealth performance, a corresponding outer cover structure needs to be designed, and the designed outer cover structure meets the following requirements:
1) when the convergence section and the expansion section move, the closed working state can be kept;
2) the tail end is connected with the outlet end of the expansion section, and can move along with the expansion section without a seam.
The existing binary vector nozzle outer cover can not well meet the requirements.
The present application has been made in view of the above-mentioned technical drawbacks.
It should be noted that the above background disclosure is only for the purpose of assisting understanding of the inventive concept and technical solutions of the present invention, and does not necessarily belong to the prior art of the present patent application, and the above background disclosure should not be used for evaluating the novelty and inventive step of the present application without explicit evidence to suggest that the above content is already disclosed at the filing date of the present application.
Disclosure of Invention
It is an object of the present application to provide a binary vectoring nozzle shroud structure and method of designing the same to overcome or alleviate at least one of the known disadvantages.
The technical scheme of the application is as follows:
in one aspect, a binary vectoring nozzle shroud structure is provided, comprising:
the rear section annular cover is sleeved on the periphery of the binary vectoring nozzle, the tail end of the rear section annular cover is connected with the outlet end of the expansion section of the binary vectoring nozzle, and a set angle alpha is formed between the rear section annular cover and the expansion section;
the middle section annular cover is sleeved on the periphery of the binary vector spray pipe, the tail end of the middle section annular cover is rotationally connected with the front end of the rear section annular cover, and the inner side of the middle section annular cover is rotationally connected with the expansion section;
the front section annular cover is sleeved on the periphery of the binary vectoring nozzle, the tail end of the front section annular cover is partially overlapped with the front end of the middle section annular cover and is in sliding connection with the middle section annular cover, and the inner side of the front section annular cover is in rotating connection with the circular-square section of the binary vectoring nozzle.
According to at least one embodiment of the present application, the above-mentioned binary vectoring nozzle shroud structure further comprises:
and the first transfer arc-shaped section is sleeved on the periphery of the binary vectoring nozzle and is positioned inside the middle section annular cover, the outer side of the first transfer arc-shaped section is rotatably connected with the tail end of the middle section annular cover, and the tail end of the first transfer arc-shaped section is butted with the front end of the rear section annular cover.
According to at least one embodiment of the present application, in the above-mentioned binary vectoring nozzle outer shroud structure, the central point of the first transition arc-shaped section is an intersection point e of a perpendicular line passing through the front end point f of the rear section annular shroud and the expansion section;
the radius R1 of the first transition arc segment is ef.
According to at least one embodiment of the present application, the above-mentioned binary vectoring nozzle shroud structure further comprises:
one end of the connecting rod is connected with the inner side of the middle section annular cover, and the other end of the connecting rod is hinged to the center point of the first transfer arc section.
In accordance with at least one embodiment of the present application, the above-described dual vectoring nozzle shroud configuration includes a forward section annular shroud terminating outwardly from a forward end of a mid-section annular shroud.
According to at least one embodiment of the present application, the above-mentioned binary vectoring nozzle shroud structure further comprises:
the elastic ring is sleeved on the periphery of the binary vector nozzle, the front end of the elastic ring is lapped on the inner side of the tail cover of the airplane, and the rear end of the elastic ring is rotatably connected with the front end of the front section annular cover.
According to at least one embodiment of the present application, the above-mentioned binary vectoring nozzle shroud structure further comprises:
and the second switching arc-shaped section is sleeved on the periphery of the binary vector spray pipe and is positioned on the inner side of the elastic ring, the outer side of the second switching arc-shaped section is rotatably connected with the tail end of the elastic ring, and the tail end of the second switching arc-shaped section is butted with the front end of the front section annular cover.
According to at least one embodiment of the present application, in the above-mentioned binary vectoring nozzle shroud structure, the central point of the second adapter arc segment is an intersection point h of a perpendicular line passing through the end point k of the elastic ring and a perpendicular line passing through the front end point g of the front segment annular shroud;
the radius R2 of the second transfer arc segment is hg.
According to at least one embodiment of the present application, the above-mentioned binary vectoring nozzle shroud structure further comprises:
and one end of the rotating rod is connected with the inner side of the front section annular cover, and the other end of the rotating rod is rotatably connected with the circular rotating square section at the center point h of the second rotating arc section.
In another aspect, a method for designing a binary vectoring nozzle shroud structure is provided, comprising:
constructing a two-dimensional parameterized simulation model of the binary vector nozzle;
based on a two-dimensional parameterized simulation model of the binary vector nozzle, determining the length L1 of the rear-section annular cover, the length L2 of the middle-section annular cover and the length L3 of the front-section annular cover under the condition that a set angle alpha is formed between the rear-section annular cover and the expansion section and each typical working state of the binary vector nozzle keeps a closed working state, determining the lap joint length between the front end of the middle-section annular cover and the tail end of the front-section annular cover, and further determining the radius H and the length L4 of the elastic ring;
based on a two-dimensional parameterized simulation model of the binary vector nozzle, determining a first transfer arc section by taking an intersection point e of a perpendicular line passing through a front end point f of the rear section annular cover and the expansion section as a central point and taking ef as a radius;
based on a two-dimensional parameterized simulation model of the binary vector nozzle, determining a second switching arc section by taking an intersection point h of a perpendicular line passing through a tail end point k of the elastic ring and a perpendicular line passing through a front end point g of the front section annular cover as a central point and taking hg as a radius;
and (3) constructing a three-dimensional parameterized simulation model of the binary vector spray pipe and the outer cover structure thereof, considering the three-dimensional space structures of the binary vector spray pipe and the outer cover structure, verifying the outer cover structure under each typical working state of the binary vector spray pipe, and adjusting the outer cover structure according to the verification.
Drawings
FIG. 1 is a schematic diagram of a two-dimensional parameterized simulation model of a binary vector nozzle and its nacelle structure provided by an embodiment of the present application;
FIG. 2 is a cross-sectional view of a three-dimensional parameterized simulation model of a binary thrust vectoring nozzle and its nacelle structure provided in an embodiment of the present application;
wherein:
1-a rear section annular cover; 2-an expansion section; 3-middle section annular cover; 4-a front section annular cover; 5-round to square section; 6-a first transfer arc segment; 7-a connecting rod; 8-an elastic ring; 9-a second transfer arc segment; 10-rotating rod; 11-convergence section.
For the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; further, the drawings are for illustrative purposes, and terms describing positional relationships are limited to illustrative illustrations only and are not to be construed as limiting the patent.
Detailed Description
In order to make the technical solutions and advantages of the present application clearer, the technical solutions of the present application will be further clearly and completely described in the following detailed description with reference to the accompanying drawings, and it should be understood that the specific embodiments described herein are only some of the embodiments of the present application, and are only used for explaining the present application, but not limiting the present application. It should be noted that, for convenience of description, only the parts related to the present application are shown in the drawings, other related parts may refer to general designs, and the embodiments and technical features in the embodiments in the present application may be combined with each other to obtain a new embodiment without conflict.
In addition, unless otherwise defined, technical or scientific terms used in the description of the present application shall have the ordinary meaning as understood by one of ordinary skill in the art to which the present application belongs. The terms "upper", "lower", "left", "right", "center", "vertical", "horizontal", "inner", "outer", and the like used in the description of the present application, which indicate orientations, are used only to indicate relative directions or positional relationships, and do not imply that the devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and when the absolute position of the object to be described is changed, the relative positional relationships may be changed accordingly, and thus, should not be construed as limiting the present application. The use of "first," "second," "third," and the like in the description of the present application is for descriptive purposes only to distinguish between different components and is not to be construed as indicating or implying relative importance. The use of the terms "a," "an," or "the" and similar referents in the context of describing the application is not to be construed as an absolute limitation on the number, but rather as the presence of at least one. The word "comprising" or "comprises", and the like, when used in this description, is intended to specify the presence of stated elements or items, but not the exclusion of other elements or items.
Further, it is noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," and the like are used in the description of the invention in a generic sense, e.g., connected as either a fixed connection or a removable connection or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, or they may be connected through the inside of two elements, and those skilled in the art can understand their specific meaning in this application according to the specific situation.
The present application is described in further detail below with reference to fig. 1-2.
In one aspect, a binary vectoring nozzle shroud structure is provided, comprising:
the rear section annular cover 1 is sleeved on the periphery of the binary vectoring nozzle, the tail end of the rear section annular cover is connected with the outlet end of the expansion section 2 of the binary vectoring nozzle, and a set angle alpha is formed between the rear section annular cover and the expansion section 2;
the middle section annular cover 3 is sleeved on the periphery of the binary vectoring nozzle, the tail end of the middle section annular cover is rotationally connected with the front end of the rear section annular cover 1, and the inner side of the middle section annular cover is rotationally connected with the expansion section 2;
the front section annular cover 4 is sleeved on the periphery of the binary vectoring nozzle, the tail end of the front section annular cover is partially overlapped with the front end of the middle section annular cover 3 and is in sliding connection with the middle section annular cover 3, and the inner side of the front section annular cover is in rotating connection with the circular-square section 5 of the binary vectoring nozzle.
With respect to the dual vectoring nozzle outer shroud structure disclosed in the above embodiments, it will be appreciated by those skilled in the art that when used as a dual vectoring nozzle, the end of the aft section annular shroud 1, which is rotatably coupled to the mid section annular shroud 3, is configured to couple to the outlet end of the dual vectoring nozzle expansion section 2, thereby allowing it to follow the expansion section without creating a slot during the expansion section movement.
With respect to the dual vectoring nozzle shroud structure disclosed in the above embodiments, it will be understood by those skilled in the art that when the dual vectoring nozzle is used as a dual vectoring nozzle, a certain overlap amount exists between the front end of the middle section annular shroud 3 and the end of the front section annular shroud 4, so that the dual vectoring nozzle shroud structure can be compensated to maintain a closed operating state when the convergent section and the divergent section of the dual vectoring nozzle move.
In some optional embodiments, the above binary vectoring nozzle shroud structure further comprises:
and the first switching arc-shaped section 6 is sleeved on the periphery of the binary vectoring nozzle, is positioned on the inner side of the middle section annular cover 3, is rotatably connected with the tail end of the middle section annular cover 3, and is butted with the front end of the rear section annular cover 1.
In some optional embodiments, in the above two-dimensional vectoring nozzle outer cover structure, the central point of the first transition arc-shaped section 6 is an intersection point e of a perpendicular line passing through the front end point f of the rear section annular cover 1 and a parallel line with a distance r between the expansion sections 2, where r may be zero, that is, the intersection point is located on the expansion section, or may be set by a related technician according to a specific practice;
the radius R1 of the first transition arc segment 6 is ef.
In some optional embodiments, the above binary vectoring nozzle shroud structure further comprises:
one end of the connecting rod 7 is connected with the inner side of the middle section annular cover 3, and the other end of the connecting rod is hinged at the center point of the first transfer arc-shaped section 6.
With respect to the two-dimensional vectoring nozzle outer cover structure disclosed in the above embodiments, it can be understood by those skilled in the art that the design of the connecting rod 7 and the first transition arc-shaped section 6 thereof can enable the rear section annular cover 1 and the middle section annular cover 3 to slide smoothly when the convergent section and the divergent section of the two-dimensional vectoring nozzle move, and can effectively maintain the sealing property between the rear section annular cover 1 and the middle section annular cover 3.
In some alternative embodiments, the dual vectoring nozzle shroud configuration described above, the forward annular shroud 4 terminates outside the forward end of the intermediate annular shroud 3.
In some optional embodiments, the above binary vectoring nozzle shroud structure further comprises:
and the elastic ring 8 is sleeved on the periphery of the binary vector nozzle, the front end of the elastic ring is lapped on the inner side of the tail cover of the airplane, and the rear end of the elastic ring is rotatably connected with the front end of the front section annular cover 4.
In some optional embodiments, the above binary vectoring nozzle shroud structure further comprises:
and the second switching arc-shaped section 9 is sleeved on the periphery of the binary vector spray pipe, is positioned on the inner side of the elastic ring 8, is rotatably connected with the tail end of the elastic ring 8 at the outer side, and is butted with the front end of the front section annular cover 4 at the tail end.
In some alternative embodiments, in the above-mentioned binary vectoring nozzle shroud structure, the central point of the second adapter arc segment 9 is the intersection point h of the perpendicular line passing through the terminal point k of the elastic ring 8 and the perpendicular line passing through the front end point g of the front section annular shroud 4;
the radius R2 of the second transfer arc-shaped section 9 is hg.
In some optional embodiments, the above binary vectoring nozzle shroud structure further comprises:
and one end of the rotating rod 10 is connected with the inner side of the front section annular cover 4, and the other end of the rotating rod is rotatably connected with the circular rotating square section 5 at the central point h of the second rotating arc-shaped section 9.
With respect to the two-dimensional vectoring nozzle outer cover structure disclosed in the above embodiments, it can be understood by those skilled in the art that the design of the rotating rod 10 and the second adapting arc-shaped section 9 thereof can enable the front section annular cover 4 and the elastic ring 8 to rotate smoothly when the converging section and the diverging section of the two-dimensional vectoring nozzle move, and can effectively maintain the tightness between the front section annular cover 4 and the elastic ring 8.
In some alternative embodiments, in the above-mentioned two-dimensional vectoring nozzle outer cover structure, the shape of the end of the rear section annular cover 1 is determined according to the shape of the outlet end of the expanding section 2 of the two-dimensional vectoring nozzle, and the shape is zigzag, so that the influence on the exhaust gas of the nozzle is avoided.
In another aspect, a method for designing a binary vectoring nozzle shroud structure is provided, comprising:
constructing a two-dimensional parameterized simulation model of the binary vector nozzle;
based on a two-dimensional parameterized simulation model of the binary vector nozzle, under the constraint that a set angle alpha is formed between the rear-section annular cover 1 and the expansion section 2 and each typical working state of the binary vector nozzle is kept in a closed working state, determining the length L1 of the rear-section annular cover 1, the length L2 of the middle-section annular cover 3 and the length L3 of the front-section annular cover 4, determining the lap joint length between the front end of the middle-section annular cover 3 and the tail end of the front-section annular cover 4, further determining the radius H and the length L4 of the elastic ring 8, and determining the length of the connecting rod 7 and the length of the rotating rod 10;
based on a two-dimensional parameterized simulation model of the binary vector nozzle, taking an intersection point e of a perpendicular line passing through a front end point f of the rear section annular cover 1 and a parallel line with a distance r between the expansion sections 2 as a central point, and taking ef as a radius to determine a molded surface of the first transfer arc-shaped section 6;
based on a two-dimensional parameterized simulation model of the binary vector nozzle, determining the profile of the second switching arc-shaped section 9 by taking the intersection point h of a perpendicular line passing through the tail end point k of the elastic ring 8 and a perpendicular line passing through the front end point g of the front section annular cover 4 as a central point and taking hg as a radius;
and (3) constructing a three-dimensional parameterized simulation model of the binary vector spray pipe and the outer cover structure thereof, considering the three-dimensional space structures of the binary vector spray pipe and the outer cover structure, verifying the outer cover structure under each typical working state of the binary vector spray pipe, and adjusting the outer cover structure according to the verification.
In some optional embodiments, each typical working state of the binary vector nozzle in the above binary vector nozzle cover structure design method includes a working state in which the binary vector nozzle is in a maximum throat area and in a minimum throat area, and most working states of the binary vector nozzle are covered between the two working states.
In some alternative embodiments, the consideration of the three-dimensional spatial structure of the binary vector nozzle and the shroud structure in the above method for designing the shroud structure of the binary vector nozzle includes consideration of the material, thickness, spatial position distribution of each component of the shroud structure, and the connection structure between the shroud structure and the binary vector nozzle.
For the method for designing the binary vector nozzle cover structure disclosed in the above embodiment, it can be understood by those skilled in the art that the method is based on the actual construction of the binary vector nozzle, the two-dimensional parameterized simulation model is preliminarily determined under the two-dimensional parameterized simulation model and its constraint conditions, then the three-dimensional parameterized simulation model of the binary vector nozzle and its cover structure is constructed based on the actual construction of the binary vector nozzle and the preliminarily determined important parameters of the nozzle cover structure, the cover structure is verified under each typical working state of the binary vector nozzle, and the cover structure is adjusted accordingly, so as to obtain the applicable binary vector nozzle cover structure.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
Having thus described the present application in connection with the preferred embodiments illustrated in the accompanying drawings, it will be understood by those skilled in the art that the scope of the present application is not limited to those specific embodiments, and that equivalent modifications or substitutions of related technical features may be made by those skilled in the art without departing from the principle of the present application, and those modifications or substitutions will fall within the scope of the present application.
Claims (10)
1. A binary vectoring nozzle shroud structure, comprising:
the rear section annular cover (1) is sleeved on the periphery of the binary vectoring nozzle, the tail end of the rear section annular cover is connected with the outlet end of the expansion section (2) of the binary vectoring nozzle, and a set angle alpha is formed between the rear section annular cover and the expansion section (2);
the middle section annular cover (3) is sleeved on the periphery of the binary vector spray pipe, the tail end of the middle section annular cover is rotatably connected with the front end of the rear section annular cover (1), and the inner side of the middle section annular cover is rotatably connected with the expansion section (2);
the front section annular cover (4) is sleeved on the periphery of the binary vectoring nozzle, the tail end of the front section annular cover is partially overlapped with the front end of the middle section annular cover (3), the middle section annular cover (3) is connected in a sliding mode, and the inner side of the front section annular cover is rotationally connected with the circular rotating square section (5) of the binary vectoring nozzle.
2. The binary vectoring nozzle shroud configuration according to claim 1,
further comprising:
and the first switching arc-shaped section (6) is sleeved on the periphery of the binary vectoring nozzle and is positioned on the inner side of the middle section annular cover (3), the outer side of the first switching arc-shaped section is rotationally connected with the tail end of the middle section annular cover (3), and the tail end of the first switching arc-shaped section is in butt joint with the front end of the rear section annular cover (1).
3. The binary vectoring nozzle shroud configuration according to claim 2,
the central point of the first transfer arc-shaped section (6) is the intersection point e of the vertical line passing through the front end point f of the rear section annular cover (1) and the expansion section (2);
the radius R1 of the first transfer arc segment (6) is ef.
4. The binary vectoring nozzle shroud configuration according to claim 3,
further comprising:
and one end of the connecting rod (7) is connected with the inner side of the middle section annular cover (3), and the other end of the connecting rod is hinged to the center point of the first transfer arc-shaped section (6).
5. The binary vectoring nozzle shroud configuration according to claim 1,
the tail end of the front section annular cover (4) is lapped outside the front end of the middle section annular cover (3).
6. The binary vectoring nozzle shroud configuration according to claim 1,
further comprising:
and the elastic ring (8) is sleeved on the periphery of the binary vectoring nozzle, the front end of the elastic ring is lapped on the inner side of the tail cover of the airplane, and the rear end of the elastic ring is rotatably connected with the front end of the front section annular cover (4).
7. The binary vectoring nozzle shroud configuration according to claim 6,
further comprising:
and the second switching arc-shaped section (9) is sleeved on the periphery of the binary vectoring nozzle and is positioned on the inner side of the elastic ring (8), the outer side of the second switching arc-shaped section is rotatably connected with the tail end of the elastic ring (8), and the tail end of the second switching arc-shaped section is butted with the front end of the front section annular cover (4).
8. The binary vectoring nozzle shroud configuration according to claim 7,
the central point of the second switching arc-shaped section (9) is an intersection point h of a perpendicular line passing through a tail end point k of the elastic ring (8) and a perpendicular line passing through a front end point g of the front section annular cover (4);
the radius R2 of the second switching arc-shaped section (9) is hg.
9. The binary vectoring nozzle shroud configuration according to claim 8,
further comprising:
and one end of the rotating rod (10) is connected with the inner side of the front section annular cover (4), and the other end of the rotating rod is rotatably connected with the circular rotating square section (5) at the central point h of the second rotating arc-shaped section (9).
10. A method for designing a binary vectoring nozzle shroud structure, comprising:
constructing a two-dimensional parameterized simulation model of the binary vector nozzle;
based on a two-dimensional parameterized simulation model of the binary vector nozzle, under the condition constraints that a set angle alpha is formed between the rear-section annular cover (1) and the expansion section (2) and each typical working state of the binary vector nozzle is kept in a closed working state, the length L1 of the rear-section annular cover (1), the length L2 of the middle-section annular cover (3) and the length L3 of the front-section annular cover (4) are determined, the lap joint length between the front end of the middle-section annular cover (3) and the tail end of the front-section annular cover (4) is determined, and then the radius H and the length L4 of the elastic ring (8) are determined;
based on a two-dimensional parameterized simulation model of a binary vector nozzle, determining a profile of a first transfer arc-shaped section (6) by taking an intersection point e of a perpendicular line passing through a front end point f of a rear section annular cover (1) and an expansion section (2) as a central point and taking ef as a radius;
based on a two-dimensional parameterized simulation model of the binary vector nozzle, determining the profile of a second switching arc-shaped section (9) by taking the intersection point h of a perpendicular line passing through the tail end point k of the elastic ring (8) and a perpendicular line passing through the front end point g of the front section annular cover (4) as a central point and taking hg as a radius;
and (3) constructing a three-dimensional parameterized simulation model of the binary vector spray pipe and the outer cover structure thereof, considering the three-dimensional space structures of the binary vector spray pipe and the outer cover structure, verifying the outer cover structure under each typical working state of the binary vector spray pipe, and adjusting the outer cover structure according to the verification.
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| CN114151224B (en) * | 2021-10-20 | 2023-06-30 | 中国航发四川燃气涡轮研究院 | External adjusting structure suitable for binary vector spray pipe |
| CN114109648B (en) * | 2021-11-12 | 2023-02-28 | 中国航发沈阳发动机研究所 | Adjustable spray pipe outer cover mechanism |
| CN114109647B (en) * | 2021-11-12 | 2023-02-28 | 中国航发沈阳发动机研究所 | Adjustable spray pipe outer cover mechanism |
| CN115163328B (en) * | 2022-04-24 | 2023-01-17 | 中国航发四川燃气涡轮研究院 | Improved external adjusting structure for binary vector spray pipe |
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| CN103696878A (en) * | 2013-12-04 | 2014-04-02 | 中国航空工业集团公司沈阳发动机设计研究所 | Axisymmetric convergent and divergent exhaust nozzle |
| CN104033274A (en) * | 2014-05-18 | 2014-09-10 | 中国航空工业集团公司沈阳发动机设计研究所 | Novel axial-symmetry convergence and expansion spray pipe using single actuation system |
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