CN115853665B - Swing spray pipe for small tactical missile - Google Patents
Swing spray pipe for small tactical missile Download PDFInfo
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- CN115853665B CN115853665B CN202210896777.5A CN202210896777A CN115853665B CN 115853665 B CN115853665 B CN 115853665B CN 202210896777 A CN202210896777 A CN 202210896777A CN 115853665 B CN115853665 B CN 115853665B
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- 239000007921 spray Substances 0.000 title claims description 29
- 230000007246 mechanism Effects 0.000 claims abstract description 36
- 238000007789 sealing Methods 0.000 claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000007787 solid Substances 0.000 abstract description 6
- 239000007789 gas Substances 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- -1 polytetrafluoroethylene Polymers 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 235000015842 Hesperis Nutrition 0.000 description 1
- 235000012633 Iberis amara Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000002679 ablation Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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- Nozzles (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
Abstract
The invention is suitable for the technical field of jet pipes for solid rocket engines, and provides a swing jet pipe for small tactical missiles, which comprises the following components: the fixing body is provided with an outer spherical body; the movable body is provided with an inner spherical body and a middle spherical body, the outer spherical body and the middle spherical body form spherical surface matching, the middle spherical body is connected with the outer spherical body through a first rotating shaft and can rotate around the first rotating shaft, and the inner spherical body is connected with the middle spherical body through a second rotating shaft and can rotate around the second rotating shaft; the driving mechanism is used for driving the movable body to swing around the first rotating shaft or the second rotating shaft. The swing jet pipe for the small tactical missile separates the sealing and bearing functions between the movable body and the fixed body, greatly reduces the friction resistance between the movable body and the fixed body, can drive the movable body of the swing jet pipe to swing by utilizing the driving mechanism with small power and small size, is convenient for realizing the light miniaturization of the swing jet pipe, and reduces the production cost of the swing jet pipe.
Description
Technical Field
The invention relates to the technical field of spray pipes for solid rocket engines, in particular to a swing spray pipe for small tactical missiles.
Background
The missiles, rockets and the like are all flying requirements of rapid maneuvering in an active section, turning in vertical launching, shoulder-crossing launching, high-altitude aerodynamic flight and the like through thrust vector control of a solid rocket engine, and the swing spray pipe for the small tactical missiles is one of important modes for thrust vector control of the solid rocket engine.
In the prior art, the swing jet pipe for the large tactical missile has high maturity, is mainly applied to large and medium solid rocket engines, and meets technical bottlenecks in light and small swing jet pipes for the small tactical missiles. The movable body and the fixed body of the swing spray pipe are matched with each other generally through a spherical surface, and the movable body is driven to swing around the swing spherical center through a driving mechanism. However, because the spherical surface matched between the movable body and the fixed body needs to play a role in sealing and bearing load, the friction resistance between the movable body and the fixed body is high, and the swinging of the swinging spray pipe can be realized only by arranging a high-power and large-volume driving mechanism, the swinging spray pipe is difficult to realize light miniaturization, the production cost is high, and the application of the swinging spray pipe on a small tactical missile is limited.
Disclosure of Invention
The invention provides a swing jet pipe for a small tactical missile, and aims to solve the problems that the swing jet pipe in the prior art is difficult to realize light miniaturization and high in production cost.
The invention is realized by providing a swing nozzle for a small tactical missile, comprising:
the fixing body is provided with an outer spherical body;
the movable body is provided with an inner layer spherical body and a middle layer spherical body wrapping the inner layer spherical body, the outer layer spherical body wraps the middle layer spherical body and forms spherical fit with the middle layer spherical body, the middle layer spherical body is connected with the outer layer spherical body through a first rotating shaft and can rotate around the first rotating shaft, and the inner layer spherical body is connected with the middle layer spherical body through a second rotating shaft and can rotate around the second rotating shaft;
the driving mechanism is connected with the movable body and is used for driving the movable body to swing around the first rotating shaft or the second rotating shaft so that the movable body can swing around the swinging sphere center in a full-axis manner.
Preferably, the second rotating shaft and the first rotating shaft are respectively perpendicular to the central axis of the swing spray pipe, and the second rotating shaft and the first rotating shaft are mutually perpendicular.
Preferably, sealing elements are arranged between the middle layer spherical body and the outer layer spherical body, and between the inner layer spherical body and the middle layer spherical body.
Preferably, the driving mechanism includes:
the first driving mechanism is connected with the movable body and is used for driving the movable body to swing around the first rotating shaft;
and the second driving mechanism is connected with the movable body and is used for driving the movable body to swing around the second rotating shaft.
Preferably, a first residue collecting structure for collecting residues is arranged between the middle layer spherical body and the outer layer spherical body.
Preferably, the first residue collecting structure is an annular collecting cavity arranged on the middle spherical body or the outer spherical body.
Preferably, a second residue collecting structure for collecting residues is arranged between the inner layer spherical body and the middle layer spherical body.
Preferably, the second residue collecting structure is an annular collecting cavity arranged on the inner layer spherical body and the middle layer spherical body.
Preferably, the first rotating shaft and the second rotating shaft are respectively sleeved with a slip ring or a bearing.
Preferably, the method further comprises:
the driving mechanism is connected with the lugs and pushes and pulls the lugs to enable the movable body to rotate around the first rotating shaft or the second rotating shaft.
The invention provides a swing spray pipe for a small tactical missile, which is characterized in that an outer spherical body is arranged on a fixed body, an inner spherical body and a middle spherical body are arranged on a movable body, the middle spherical body is connected with the outer spherical body through a first rotating shaft and can rotate around the first rotating shaft, the inner spherical body is connected with the middle spherical body through a second rotating shaft and can rotate around the second rotating shaft, so that the sealing and bearing functions between the movable body and the fixed body are separated, the friction resistance between the movable body and the fixed body is greatly reduced, the required driving power of the movable body is low, and the movable body of the swing spray pipe can be driven to swing by arranging a driving mechanism with small power and small size, so that the swing spray pipe is convenient to realize light miniaturization, meanwhile, the production cost of the swing spray pipe is reduced, and the swing spray pipe is convenient to be applied to the small tactical missile; in addition, the middle-layer spherical body is connected with the outer-layer spherical body through the first rotating shaft, the inner-layer spherical body is connected with the middle-layer spherical body through the second rotating shaft, torsion can be avoided when the whole shaft of the swing spray pipe swings through the first rotating shaft and the second rotating shaft, an anti-torsion structure is not required to be additionally arranged, the structure is simple, and the implementation cost is low.
Drawings
FIG. 1 is a schematic cross-sectional view of a swing nozzle for a small tactical missile according to the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is another schematic cross-sectional view of a swing nozzle for a small tactical missile according to an embodiment of the present invention;
fig. 4 is an enlarged view of a portion B in fig. 3.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The embodiment of the invention provides a swing spray pipe for a small tactical missile, which is characterized in that an outer spherical body is arranged on a fixed body, an inner spherical body and a middle spherical body are arranged on a movable body, the middle spherical body is connected with the outer spherical body through a first rotating shaft and can rotate around the first rotating shaft, the inner spherical body is connected with the middle spherical body through a second rotating shaft and can rotate around the second rotating shaft, the sealing and bearing function separation between the movable body and the fixed body is realized, the friction resistance between the movable body and the fixed body is greatly reduced, the required driving power of the movable body is low, and a driving mechanism with small power and small size is arranged to drive the movable body of the swing spray pipe to swing, so that the swing spray pipe is convenient to realize light miniaturization, meanwhile, the production cost of the swing spray pipe is reduced, and the application of the swing spray pipe on the small tactical missile is convenient; moreover, the first rotating shaft and the second rotating shaft structure are utilized to ensure that the swinging spray pipe does not twist when swinging along the whole shaft, an anti-twisting structure is not required to be additionally arranged, the structure is simple, and the realization cost is low.
Referring to fig. 1-4, an embodiment of the present invention provides a swing nozzle for a small tactical missile, for a small solid rocket engine, including:
the fixing body 1, the fixing body 1 is provided with an outer spherical body 11;
the movable body 2 is provided with an inner layer spherical body 21 and a middle layer spherical body 22 wrapping the inner layer spherical body 21, the outer layer spherical body 11 wraps the middle layer spherical body 22 and forms spherical fit with the middle layer spherical body 22, the middle layer spherical body 22 is connected with the outer layer spherical body 11 through a first rotating shaft 3 and can rotate around the first rotating shaft 3, and the inner layer spherical body 21 is connected with the middle layer spherical body 22 through a second rotating shaft 4 and can rotate around the second rotating shaft 4;
the driving mechanism is connected with the movable body 2 and is used for driving the movable body 2 to swing around the first rotating shaft 3 or the second rotating shaft 4 so that the movable body 2 can swing around the swing sphere center in a full-axis manner.
In the embodiment of the present invention, the inner spherical body 21, the middle spherical body 22 and the outer spherical body 11 are respectively in three-layer spherical structures, and the inner spherical body 21, the middle spherical body 22 and the outer spherical body 11 are concentrically arranged, and the swinging spherical center is the same as the spherical centers of the inner spherical body 21, the middle spherical body 22 and the outer spherical body 11.
In the embodiment of the invention, the movable body 2 further comprises a nozzle diffusing section 20, an inner spherical body 21 and a middle spherical body 22 are connected to one end of the nozzle diffusing section 20, which is close to the fixed body 1, the throat 23 of the swing nozzle is positioned at the position of the inner spherical body 21, and the separating surface 10 of the fixed body 1 and the movable body 2 is arranged at the upstream of the throat 23 of the swing nozzle.
In the embodiment of the invention, the outer layer spherical body 11 is arranged on the fixed body 1, the inner layer spherical body 21 and the middle layer spherical body 22 are arranged on the movable body 2, the middle layer spherical body 22 is connected with the outer layer spherical body 11 through the first rotating shaft 3 and can rotate around the first rotating shaft 3, the inner layer spherical body 21 is connected with the middle layer spherical body 22 through the second rotating shaft 4 and can rotate around the second rotating shaft 4, and when the middle layer spherical body 22 and the outer layer spherical body 11 are matched for rotation, the middle layer spherical body 22 and the outer layer spherical body 11 are matched for only a sealing function, and the first rotating shaft 3 bears an axial load function; when the inner spherical body 21 and the middle spherical body 22 are matched for rotation, the matching surfaces of the inner spherical body 21 and the middle spherical body 22 also only play a sealing function, and the second rotating shaft 4 bears an axial load function, so that the sealing and bearing function separation between the movable body 2 and the fixed body 1 is realized, the friction resistance between the movable body 2 and the fixed body 1 is greatly reduced, the required driving power of the movable body 2 is low, the movable body 2 of the swing spray pipe can be driven to swing by a driving mechanism with small power and small size, the swing spray pipe is convenient to realize light miniaturization, the production cost of the swing spray pipe is reduced, and the swing spray pipe is convenient to apply on a small tactical missile.
As one embodiment of the invention, the middle spherical body 22 is made of an ablation-resistant heat-insulating material, and the middle spherical body 22 is utilized to insulate heat, so that the outer spherical body 11, the inner spherical body 21 and the middle spherical body 22 are arranged, and the first rotating shaft 3 and the second rotating shaft 4 are arranged, so that the functions of sealing, bearing and heat insulation can be separated, the friction load is greatly reduced, the driving power is low, the miniaturization is easy to realize, the processing difficulty of the bearing sealing surface is reduced while the functions are separated, and the low cost is easy to realize; compared with a flexible spray pipe, the spherical center has no drift and wide applicable temperature range.
As an embodiment of the present invention, the second rotating shaft 4 and the first rotating shaft 3 are respectively perpendicular to the central axis of the swing nozzle, and the second rotating shaft 4 and the first rotating shaft 3 are mutually perpendicular.
In this embodiment, the middle layer spherical body 22 is connected with the outer layer spherical body 11, the inner layer spherical body 21 and the middle layer spherical body 22 through the first rotating shaft 3 and the second rotating shaft 4 perpendicular to the central axis of the swing nozzle respectively, and the second rotating shaft 4 is perpendicular to the first rotating shaft 3, so that the inner layer spherical movable body 2 and the middle layer spherical movable body 2 of the movable body 2 can rotate independently around the shaft, and the two-layer spherical rotation combination realizes the full-axis swing of the swing nozzle.
As an embodiment of the present invention, the sealing element 6 is disposed between the middle spherical body 22 and the outer spherical body 11, and between the inner spherical body 21 and the middle spherical body 22.
In this embodiment, the middle layer spherical body 22 and the outer layer spherical body 11 are sealed by the sealing element 6, and the inner layer spherical body 21 and the middle layer spherical body 22 are sealed by the sealing element 6, so that the sealing between the matching surfaces of the fixed body 1 and the movable body 2 is realized, and the fuel gas in the spray pipe is prevented from overflowing from the middle layer spherical body 22 and the outer layer spherical body 11 or from the inner layer spherical body 21 and the middle layer spherical body 22.
As an embodiment of the invention, the sealing element 6 is a rubber sealing ring, a polytetrafluoroethylene sealing ring or a metal sealing ring.
Wherein the sealing element 6 is a rubber sealing ring, a polytetrafluoroethylene sealing ring or a metal sealing ring. In practical applications, an O-ring, a C-ring, a polytetrafluoroethylene ring, a metal ring, etc. may be selected but not limited.
As one embodiment of the present invention, the driving mechanism includes:
a first driving mechanism 51 connected to the movable body 2 for driving the movable body 2 to swing around the first rotation shaft 3;
and a second driving mechanism 52 connected with the movable body 2 for driving the movable body 2 to swing around the second rotating shaft 4.
In this embodiment, the first driving mechanism 51 and the second driving mechanism 52 are respectively connected to the nozzle diffusing section 20 of the movable body 2, and the first driving mechanism 51 and the second driving mechanism 52 are distributed outside the swing nozzle and are arranged at intervals. Specifically, the first driving mechanism 51 can drive the movable body 2 to rotate around the first rotating shaft 3, so that the movable body 2 can swing up and down around the swinging sphere center, the second driving mechanism 52 can drive the movable body 2 to rotate around the first rotating shaft 3, so that the movable body 2 can swing left and right around the swinging sphere center, and thus, through the coordination of the first driving mechanism 51 and the second driving mechanism 52, the up-down and left-right swing of the nozzle diffusion section 20 of the movable body 2 can be realized, the full-axis swing of the nozzle diffusion section 20 of the movable body 2 is realized, and the control of the rocket engine thrust vector is fixed in real time. In this embodiment, the first driving mechanism 51 and the second driving mechanism 52 may each employ a servo motor. Of course, other drive mechanisms may be employed.
As an embodiment of the present invention, a first residue collecting structure 7 for collecting residues is provided between the middle spherical body 22 and the outer spherical body 11.
In this embodiment, the first residue collecting structure 7 is used for collecting the gas residues entering between the middle spherical body 22 and the outer spherical body 11, so as to avoid the clamping stagnation of the swing motion of the movable body 2 caused by the gas residues entering between the middle spherical body 22 and the outer spherical body 11, and ensure the swing reliability of the movable body 2.
As an embodiment of the present invention, the first residue collecting structure 7 is an annular collecting cavity arranged on the middle spherical body 22 or the outer spherical body 11, and the implementation structure is simple and convenient to process.
As an embodiment of the present invention, a second residue collecting structure 8 for collecting residues is provided between the inner spherical body 21 and the middle spherical body 22.
In this embodiment, the second residue collecting structure 8 is configured to collect the gas residues entering between the inner spherical body 21 and the middle spherical body 22, so as to avoid the clamping stagnation of the swing motion of the movable body 2 caused by the gas residues entering between the inner spherical body 21 and the middle spherical body 22, and further ensure the swing reliability of the movable body 2.
As an embodiment of the present invention, the second residue collecting structure 8 is an annular collecting cavity disposed on the inner spherical body 21 or the middle spherical body 22, and has a simple implementation structure and is convenient for processing. The specific size of the annular collecting cavity is not limited, and can be set according to actual needs.
As an embodiment of the present invention, the outside of the first rotating shaft 3 and the second rotating shaft 4 are respectively sleeved with a slip ring or a bearing 9. By arranging the slip ring or the bearing 9 to be matched with the first rotating shaft 3 and the second rotating shaft 4, the local stress concentration is reduced, and meanwhile, the rotation friction of the first rotating shaft 3 and the second rotating shaft 4 is reduced, so that the first rotating shaft 3 and the second rotating shaft 4 rotate more smoothly, and the movable body 2 is ensured to rotate freely.
The first rotating shaft 3 and the second rotating shaft 4 are made of, but not limited to, high-hardness wear-resistant materials such as bearing steel, ceramic and the like, so that the wear resistance is enhanced.
As an embodiment of the present invention, the present invention further includes a support lug 25 provided on the movable body 2, and a driving mechanism is connected to the support lug 25, and the driving mechanism rotates the movable body 2 around the first rotation shaft 3 or the second rotation shaft 4 by pushing and pulling the support lug 25.
In this embodiment, the nozzle diffuser 20 of the movable body 2 is provided with two lugs 25, and the two lugs 25 are arranged on the outer surface of the nozzle diffuser 20 at 90-degree intervals. The first drive 51 and the second drive 52 are each connected to one of the lugs 25. The first driving mechanism 51 and the second driving mechanism 52 respectively drive the movable body 2 to rotate around the first rotating shaft 3 or around the second rotating shaft 4 through pushing and pulling the corresponding lugs 25, so that the full-axis swing of the nozzle diffusion section 20 of the movable body 2 is realized, and the control of the thrust vector of the fixed rocket engine is realized.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (2)
1. A swing nozzle for a small tactical missile, the swing nozzle comprising:
the fixing body is provided with an outer spherical body;
the movable body is provided with an inner layer spherical body and a middle layer spherical body wrapping the inner layer spherical body, the outer layer spherical body wraps the middle layer spherical body and forms spherical fit with the middle layer spherical body, the middle layer spherical body is connected with the outer layer spherical body through a first rotating shaft and can rotate around the first rotating shaft, and the inner layer spherical body is connected with the middle layer spherical body through a second rotating shaft and can rotate around the second rotating shaft;
the driving mechanism is connected with the movable body and is used for driving the movable body to swing around the first rotating shaft or the second rotating shaft so that the movable body can swing around the swinging sphere center in a full-axis manner;
the second rotating shaft and the first rotating shaft are respectively perpendicular to the central axis of the swing spray pipe, and the second rotating shaft and the first rotating shaft are mutually perpendicular;
sealing elements are arranged between the middle-layer spherical body and the outer-layer spherical body and between the inner-layer spherical body and the middle-layer spherical body;
the driving mechanism includes:
the first driving mechanism is connected with the movable body and is used for driving the movable body to swing around the first rotating shaft;
the second driving mechanism is connected with the movable body and is used for driving the movable body to swing around the second rotating shaft;
a first residue collecting structure for collecting residues is arranged between the middle-layer spherical body and the outer-layer spherical body;
the first residue collecting structure is an annular collecting cavity arranged on the middle spherical body or the outer spherical body;
a second residue collecting structure for collecting residues is arranged between the inner layer spherical body and the middle layer spherical body;
the second residue collecting structure is an annular collecting cavity arranged on the inner spherical body and the middle spherical body;
further comprises: the driving mechanism is connected with the lugs and pushes and pulls the lugs to enable the movable body to rotate around the first rotating shaft or the second rotating shaft.
2. The swing nozzle for small tactical missiles of claim 1, wherein the first rotating shaft and the second rotating shaft are respectively sleeved with a slip ring or a bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210896777.5A CN115853665B (en) | 2022-07-28 | 2022-07-28 | Swing spray pipe for small tactical missile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210896777.5A CN115853665B (en) | 2022-07-28 | 2022-07-28 | Swing spray pipe for small tactical missile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115853665A CN115853665A (en) | 2023-03-28 |
| CN115853665B true CN115853665B (en) | 2023-12-22 |
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ID=85660397
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210896777.5A Active CN115853665B (en) | 2022-07-28 | 2022-07-28 | Swing spray pipe for small tactical missile |
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| CN (1) | CN115853665B (en) |
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