CN115853665A - Small-size tactics is swing spray tube for guided missile - Google Patents
Small-size tactics is swing spray tube for guided missile Download PDFInfo
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- CN115853665A CN115853665A CN202210896777.5A CN202210896777A CN115853665A CN 115853665 A CN115853665 A CN 115853665A CN 202210896777 A CN202210896777 A CN 202210896777A CN 115853665 A CN115853665 A CN 115853665A
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- 239000007921 spray Substances 0.000 title abstract description 35
- 230000007246 mechanism Effects 0.000 claims abstract description 38
- 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
- 238000000926 separation method Methods 0.000 description 3
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 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
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
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Abstract
The invention is suitable for the technical field of spray pipes for solid rocket engines, and provides a swinging spray pipe for a small tactical missile, which comprises the following components: the fixing body is provided with an outer spherical surface body; the movable body is provided with an inner layer spherical body and a middle layer spherical body, the outer layer spherical body and the middle layer spherical body form spherical surface fit, 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; and the driving mechanism is used for driving the movable body to swing around the first rotating shaft or the second rotating shaft. The swinging spray 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 swinging spray pipe to swing by utilizing a driving mechanism with low power and small size, is convenient to realize the light and small size of the swinging spray pipe, and reduces the production cost of the swinging spray pipe.
Description
Technical Field
The invention relates to the technical field of spray pipes for solid rocket engines, in particular to a swinging spray pipe for a small tactical missile.
Background
The missile, rocket and the like meet the flight requirements of rapid maneuvering at the active section, vertical launching turning, over-shoulder launching, high-altitude airless power flight and the like through the thrust vector control of the solid rocket engine, and the swing spray pipe for the small tactical missile is one of the important modes for the thrust vector control of the solid rocket engine.
In the prior art, the swing spray pipe for the large tactical missile has high maturity and is mainly applied to large and medium solid rocket engines, and the light and small swing spray pipe for the small tactical missile meets the technical bottleneck. The movable body of the swinging nozzle is matched with the fixed body through a spherical surface, and the movable body is driven to swing around the swinging spherical center through the driving mechanism. However, since the movable body and the fixed body are matched with a spherical surface to perform the functions of sealing and bearing load, the friction resistance between the movable body and the fixed body is large, and the swinging of the swinging nozzle can be realized only by arranging a high-power and large-volume driving mechanism, so that the swinging nozzle is difficult to realize light and small size, the production cost is high, and the application of the swinging nozzle to a small tactical missile is limited.
Disclosure of Invention
The invention provides a swing spray pipe for a small tactical missile, and aims to solve the problems that the swing spray pipe in the prior art is difficult to realize light and small and has high production cost.
The invention thus provides a swinging nozzle for a small tactical missile, comprising:
the fixing body is provided with an outer spherical surface 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 surface 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;
and the driving mechanism is connected with the movable body and used for driving the movable body to swing around the first rotating shaft or the second rotating shaft so that the movable body can do full-axis swing around a swinging spherical center.
Preferably, the second rotating shaft and the first rotating shaft are perpendicular to the central axis of the swing nozzle respectively, and the second rotating shaft and the first rotating shaft are arranged perpendicularly to each other.
Preferably, sealing elements are arranged between the middle layer spherical surface body and the outer layer spherical surface body, and between the inner layer spherical surface body and the middle layer spherical surface body.
Preferably, the drive mechanism includes:
the first driving mechanism is connected with the movable body and 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 collection structure for collecting residues is arranged between the middle layer spherical surface body and the outer layer spherical surface body.
Preferably, the first residue collection structure is an annular collection cavity provided on the middle layer spherical surface body or the outer layer spherical surface body.
Preferably, a second residue collecting structure for collecting residues is arranged between the inner spherical body and the middle spherical body.
Preferably, the second residue collection structure is an annular collection cavity disposed on the inner spherical body and the middle spherical body.
Preferably, the first rotating shaft and the second rotating shaft are respectively sleeved with a sliding ring or a bearing.
Preferably, the method further comprises the following steps:
the driving mechanism is connected with the support lug and pushes and pulls the support lug so as to enable the movable body to rotate around the first rotating shaft or the second rotating shaft.
The invention provides a swinging 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 separation of sealing and bearing functions 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 driving power required by the movable body is low, the movable body of the swinging spray pipe can be driven to swing by arranging a driving mechanism with small power and small size, the light and small size of the swinging spray pipe is convenient to realize, the production cost of the swinging spray pipe is reduced, and the application of the swinging spray pipe on the small tactical missile is convenient; and 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, the first rotating shaft and the second rotating shaft can ensure that the swing spray pipe does not twist when swinging in a full-shaft mode, an anti-twisting structure does not need 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 swinging nozzle for a small tactical missile according to an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion A of FIG. 1;
FIG. 3 is another schematic cross-sectional view of a swinging 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
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
The embodiment of the invention provides a swinging 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 separation of sealing and bearing functions 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 driving power required by the movable body is low, the movable body of the swinging spray pipe can be driven to swing by arranging a driving mechanism with small power and small size, the light and small size of the swinging spray pipe is convenient to realize, the production cost of the swinging spray pipe is reduced, and the application of the swinging spray pipe on the small tactical missile is convenient; moreover, the first rotating shaft and the second rotating shaft structure can ensure that the swinging spray pipe does not twist when swinging all the shaft, an additional anti-twisting structure is not needed, the structure is simple, and the realization cost is low.
Referring to fig. 1 to 4, an embodiment of the present invention provides a swinging nozzle for a small tactical missile, which is used for a small solid rocket engine, and comprises:
the fixing body 1, the fixing body 1 has outer sphere 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;
and 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 spherical center in a full-axis manner.
In the embodiment of the present invention, the inner spherical surface 21, the middle spherical surface 22 and the outer spherical surface 11 are respectively of a three-layer spherical structure, and the inner spherical surface 21, the middle spherical surface 22 and the outer spherical surface 11 are concentrically disposed, and the center of the swing sphere is the same as the center of the inner spherical surface 21, the middle spherical surface 22 and the outer spherical surface 11.
In the embodiment of the present invention, the movable body 2 further includes a nozzle diffuser 20, the inner spherical surface 21 and the middle spherical surface 22 are connected to one end of the nozzle diffuser 20 close to the fixed body 1, the throat portion 23 of the swing nozzle is located at the position of the inner spherical surface 21, and the separating surface 10 between the fixed body 1 and the movable body 2 is disposed at the upstream of the throat portion 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, when the middle layer spherical body 22 and the outer layer spherical body 11 are matched to rotate, the middle layer spherical body 22 and the outer layer spherical body 11 are matched to only play a sealing function, and the first rotating shaft 3 plays an axial load function; when the inner spherical body 21 and the middle spherical body 22 are matched to rotate, the matching surface of the inner spherical body 21 and the middle spherical body 22 also only plays a sealing function, and the second rotating shaft 4 bears the axial load function, so that the separation of the sealing and bearing functions 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 driving power required by the movable body 2 is low, the movable body 2 which is provided with a small-power and small-size driving mechanism can drive the swinging spray pipe to swing, the swinging spray pipe is convenient to realize the light and small size, the production cost of the swinging spray pipe is reduced at the same time, and the application of the swinging spray pipe on a small tactical missile is convenient.
As an embodiment of the present invention, the middle spherical surface 22 is made of an ablation-resistant heat-insulating material, and the middle spherical surface 22 is used for heat insulation, so that the outer spherical surface 11, the inner spherical surface 21 and the middle spherical surface 22 are arranged, and the first rotating shaft 3 and the second rotating shaft 4 are arranged, so that the sealing, bearing and heat insulation functions can be separated, the friction load is greatly reduced, the driving power is low, the miniaturization is easy to realize, the process treatment 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 the applicable temperature range is wide.
As an embodiment of the invention, the second rotating shaft 4 and the first rotating shaft 3 are respectively perpendicular to the central axis of the swinging spray pipe, and the second rotating shaft 4 and the first rotating shaft 3 are arranged perpendicular to each other.
In this embodiment, the middle layer spherical body 22 and the outer layer spherical body 11, and the inner layer spherical body 21 and the middle layer spherical body 22 are respectively connected through the first rotating shaft 3 and the second rotating shaft 4 perpendicular to the central axis of the swing nozzle, and the second rotating shaft 4 and the first rotating shaft 3 are vertically disposed, so that the inner layer spherical movable body 2 and the middle layer spherical movable body 2 of the movable body 2 can independently rotate around the axis, and the two layers of spherical surfaces rotate and combine to realize the full-axis swing of the swing nozzle.
As an embodiment of the present invention, the sealing elements 6 are disposed between the middle spherical surface 22 and the outer spherical surface 11, and between the inner spherical surface 21 and the middle spherical surface 22.
In this embodiment, the middle spherical surface 22 and the outer spherical surface 11 are sealed by the sealing element 6, and the inner spherical surface 21 and the middle spherical surface 22 are sealed by the sealing element 6, so as to realize the sealing between the matching surfaces of the fixed body 1 and the movable body 2, and prevent the fuel gas inside the nozzle from overflowing from between the middle spherical surface 22 and the outer spherical surface 11 or from between the inner spherical surface 21 and the middle spherical surface 22.
As an embodiment of the present invention, the sealing element 6 is a rubber sealing ring, a teflon 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, but not limited to, an O-ring, a C-ring, a teflon ring, a metal ring, etc. may be selected.
As an embodiment of the present invention, a drive mechanism includes:
a first driving mechanism 51 connected to the movable body 2 for driving the movable body 2 to swing about the first rotation axis 3;
and a second driving mechanism 52 connected to the movable body 2 for driving the movable body 2 to swing about the second rotation axis 4.
In this embodiment, the first driving mechanism 51 and the second driving mechanism 52 are respectively connected to the nozzle diverging 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 spaced apart from each other. 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 swing 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 swing center, and thus, through the coordination of the first driving mechanism 51 and the second driving mechanism 52, the spray pipe diffusion section 20 of the movable body 2 can swing up and down, left and right, and the full-axis swing of the spray pipe diffusion section 20 of the movable body 2 can be realized, so that the thrust vector of the rocket engine can be controlled. In this embodiment, the first drive mechanism 51 and the second drive mechanism 52 may be servo motors, respectively. Of course, other drive mechanisms may be used.
As an embodiment of the invention, a first debris collecting structure 7 for collecting debris is arranged between the middle spherical body 22 and the outer spherical body 11.
In this embodiment, the first residue collection structure 7 is used for collecting the gas residue entering between the middle layer spherical surface body 22 and the outer layer spherical surface body 11, so as to avoid the clamping stagnation of the swinging motion of the movable body 2 caused by the gas residue entering between the middle layer spherical surface body 22 and the outer layer spherical surface body 11, and ensure the reliability of the swinging motion of the movable body 2.
As an embodiment of the present invention, the first residue collecting structure 7 is an annular collecting cavity provided on the middle spherical body 22 or the outer spherical body 11, which is simple in structure and easy to machine.
As an embodiment of the present invention, a second residue collecting structure 8 for collecting residues is provided between the inner spherical surface body 21 and the middle spherical surface body 22.
In this embodiment, the second residue collection structure 8 is used to collect the gas residue entering between the inner spherical surface 21 and the middle spherical surface 22, so as to avoid the stagnation of the swinging motion of the movable body 2 caused by the gas residue entering between the inner spherical surface 21 and the middle spherical surface 22, and further ensure the reliability of the swinging motion of the movable body 2.
As an embodiment of the present invention, the second residue collecting structure 8 is an annular collecting cavity provided on the inner spherical body 21 or the middle spherical body 22, which is simple in structure and easy to machine. The specific size of the annular collecting cavity is not limited, and the annular collecting cavity can be arranged according to actual needs.
In an embodiment of the present invention, a slip ring or a bearing 9 is sleeved outside the first rotating shaft 3 and the second rotating shaft 4, respectively. 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 can rotate more smoothly, and the movable body 2 can rotate freely.
The first rotating shaft 3 and the second rotating shaft 4 are made of high-hardness wear-resistant materials such as bearing steel, ceramic and the like, but not limited to the materials, so that the wear resistance is enhanced.
As an embodiment of the present invention, the present invention further includes a support lug 25 disposed on the movable body 2, and the driving mechanism is connected to the support lug 25, and the driving mechanism pushes and pulls the support lug 25 to rotate the movable body 2 around the first rotation axis 3 or the second rotation axis 4.
In this embodiment, the nozzle extension section 20 of the movable body 2 is provided with two support lugs 25, and the two support lugs 25 are arranged on the outer surface of the nozzle extension section 20 at 90-degree intervals. The first drive mechanism 51 and the second drive mechanism 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 by pushing and pulling the corresponding support lug 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 present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A swinging nozzle for a small tactical missile, said swinging nozzle comprising:
the fixing body is provided with an outer spherical surface 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 surface 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;
and the driving mechanism is connected with the movable body and used for driving the movable body to swing around the first rotating shaft or the second rotating shaft so that the movable body can do full-axis swing around a swinging spherical center.
2. The swinging nozzle of claim 1, wherein the second rotating shaft and the first rotating shaft are perpendicular to the central axis of the swinging nozzle, and the second rotating shaft and the first rotating shaft are perpendicular to each other.
3. The invention of claim 1, wherein sealing elements are disposed between the middle spherical body and the outer spherical body, and between the inner spherical body and the middle spherical body.
4. The swinging nozzle for a small tactical missile of claim 1, wherein said drive mechanism comprises:
the first driving mechanism is connected with the movable body and 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.
5. The nozzle of claim 1, wherein a first debris collection structure is positioned between the middle and outer spherical surfaces for collecting debris.
6. The swinging nozzle for a compact tactical missile of claim 5, wherein said first debris collection structure is an annular collection cavity disposed on said middle or outer spherical surface.
7. The swinging nozzle for a small tactical missile of claim 1, wherein a second debris collection structure for collecting debris is disposed between said inner spherical surface and said middle spherical surface.
8. The swinging nozzle for a compact tactical missile of claim 7, wherein said second debris collection structure is an annular collection cavity disposed on said inner spherical surface and said middle spherical surface.
9. The swinging nozzle of claim 1, wherein a sliding ring or a bearing is sleeved on the outside of the first rotating shaft and the second rotating shaft respectively.
10. The swinging nozzle for a small tactical missile of claim 1, further comprising:
the driving mechanism is connected with the support lug and pushes and pulls the support lug so as to enable the movable body to rotate around the first rotating shaft or the second rotating shaft.
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 |
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| Publication Number | Publication Date |
|---|---|
| CN115853665A true CN115853665A (en) | 2023-03-28 |
| CN115853665B CN115853665B (en) | 2023-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210896777.5A Active CN115853665B (en) | 2022-07-28 | 2022-07-28 | Swing spray pipe for small tactical missile |
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| 史晨虹;陈晨;徐志书;杨金鹏;潘龙;: "基于机电伺服技术的固体火箭发动机球窝喷管限位技术研究", 机电信息, no. 03 * |
| 杨思孝;: "珠承全轴摆动喷管的设计和分析", 固体火箭技术, no. 03, pages 23 - 29 * |
| 王成林;刘勇;文立华;: "固体火箭发动机柔性喷管有限元建模及摆动分析", 科学技术与工程, no. 35, pages 9613 - 9616 * |
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