CN112576410B - Rail accuse engine metal body skin structure - Google Patents
Rail accuse engine metal body skin structure Download PDFInfo
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- CN112576410B CN112576410B CN202011458051.0A CN202011458051A CN112576410B CN 112576410 B CN112576410 B CN 112576410B CN 202011458051 A CN202011458051 A CN 202011458051A CN 112576410 B CN112576410 B CN 112576410B
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- metal
- skin
- rail
- controlled engine
- gear
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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
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/08—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using solid propellants
- F02K9/32—Constructional parts; Details not otherwise provided for
- F02K9/34—Casings; Combustion chambers; Liners thereof
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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
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/97—Rocket nozzles
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention relates to a rail-controlled engine metal integrated skin structure, which comprises: integrally forming a skin structure; a metal plug body; a confinement ring. The skin reserves little nozzle mouth gas passageway, wholly need not the axial cutting, and structure integrated into one piece. The outer edge of the metal plug is designed into a gear shape, and is fixed at a gas passage opening of the small spray pipe through a constraint ring, and the inner and outer surfaces of the constraint ring are respectively attached to the metal plug and the skin. The skin is assembled in place from one side, and the skin, the metal blocking sheet and the fixing ring are fixed in a mechanical contact mode. When the engine works, the metal blocking piece is opened, namely the gear structure of the metal blocking piece deforms to lose the constraining force, the appearance is ensured through the mechanical dimension, and the opening pressure is consistent. The metal integrated skin structure of the rail-controlled engine can meet the requirements of rail-controlled engines with different working pressures.
Description
Technical Field
The invention relates to a rail-controlled engine metal skin structure, in particular to a rail-controlled engine metal integrated skin structure. Belongs to the technical field of solid rocket engines.
Background
The rail control engine is a solid engine which is arranged between the double-pulse engines, provides transverse overload for the guided missile, adjusts the tail end rail of the guided missile and increases the target hit rate. The rail-controlled engine has the characteristics of light weight, miniaturization, quick response and the like, and the working principle is as follows: the small spray pipes are uniformly distributed in the circumferential direction to realize the adjustable and controllable thrust and direction.
In order to not influence the aerodynamic shape of the missile, the shape of the missile needs to be shaped, a rail-controlled engine is usually provided with a skin structure on the outer wall surface, and meanwhile, in order to not influence the working characteristic of the rail-controlled engine, a notch needs to be reserved at the position of a corresponding small spray pipe of the skin, so that a gas channel is smoothly formed when the small spray pipe works, and the transverse overload of the missile is provided. And the position of the notch reserved at the skin needs to be designed with a blocking piece structure, when the rail-controlled engine does not work, the blocking piece structure can bear the pneumatic external load in the flying of the missile, and simultaneously when the rail-controlled engine works, the structure can be smoothly opened to form a gas channel of the small spray pipe. The existing reshaping skin structure of the rail-controlled engine mainly comprises two types: the metal plug combination connected by the screw and the nonmetal plug combination connected by the pin are both in a destructive opening mode.
The main problems of the two existing plugging piece structures are as follows: the metal blocking piece combination connected by the screw adopts the mode that the metal blocking piece is connected and fixed at the position of the small spray pipe on the skin through the screw to reserve a notch, the structure has more complex assembly process, the assembly working hour of a single product is longer, the mass production is not facilitated, the opening mode of the blocking piece combination is a burst mode, and the inconsistency of the opening pressure intensity can be generated by the matching relation and the processing deviation within the tolerance allowance of the product; the nonmetal closure piece combination of pin joint adopts the pin to be fixed in on the metal connecting part with nonmetal closure piece, realizes opening the function through the nonmetal part of breaking pin junction department when opening, because the intensity inconsistency of non-metal structure, the deviation of nonmetal closure piece pin fixed position, this structure is opened the pressure fluctuation and is great, influences the opening performance easily.
Disclosure of Invention
The technical problem solved by the invention is as follows: the defects of the prior art are overcome, the assembly efficiency of the rail-controlled engine skin structure and the plug combination is improved, the overall negative quality is reduced, and the consistency of the opening pressure of the plug is ensured.
The technical scheme of the invention is as follows: a metal integrated skin structure suitable for a rail-controlled engine comprises a skin body, a restraining ring and a metal plug sheet body;
the metal blocking piece body is used for covering a nozzle of the rail-controlled engine, the edge of the metal blocking piece body is designed into a gear-shaped structure, the edge of the gear-shaped structure is attached to one side of the inner molded surface of the constraint ring, the outer molded surface of the constraint ring is attached to the skin, and the metal blocking piece body, the inner molded surface of the constraint ring and the skin are connected in a mechanical contact type fixing mode;
when the rail-controlled engine does not work, the metal plug body is fixed at the orifice of the small nozzle by the restraint ring, the outer molded surface of the restraint ring is designed into a structural form matched with the inner molded surface of the skin, the inner molded surface is designed into a structural form matched with the outlet of the nozzle, the metal plug body is compressed to provide pressing force required by pneumatic external load bearing of the metal plug, and the metal plug body and the integrated skin structure are jointly used as a pneumatic appearance shaping structure of the rail-controlled engine to bear the pneumatic external load; when the rail-controlled engine works, under the action of air flow, the gear-shaped edge of the metal plug piece body deforms to lose constraint force, and a gas channel is formed by opening the metal plug piece body.
The skin body is integrally processed by adopting an integrated forming processing method.
The skin body is made of 30Cr3 SiNiMoVA.
The thickness value range of the skin body is as follows: 0.7-0.9 mm.
The thickness range of the constraint ring is as follows: 0.25-0.35 mm.
The confinement ring is made of titanium alloy.
The metal plug body is made of aluminum alloy.
The mechanical size of each gear on the edge of the gear-shaped structure of the metal plug body is consistent, so that the consistency of the opening pressure of the plug is ensured.
The thickness of each gear on the edge of the gear-shaped structure of the metal plug piece body is 0.15mm, and the opening angle at the gear is 60 degrees.
Compared with the prior art, the invention has the beneficial effects that:
(1) the metal plug sheet and the fixing ring are fixed to the gas channel opening of the small spray pipe in a mechanical contact mode, the structure is simple, the number of related parts is small, the assembly is simple, the assembly time is reduced, and the economy is improved.
(2) The skin is integrally processed and formed, so that the processing difficulty of the skin is reduced, and the processing manufacturability is optimized;
(3) the invention adopts a gear-shaped metal blocking piece structure form, the opening form is that the root part of the gear structure loses constraint force, the opening form is a non-destructive form, the opening strength is ensured through the mechanical size, and the opening consistency of the blocking piece is improved;
(4) the invention realizes the pneumatic shaping of the elastomer and the combined function of the small spray pipe and the blocking piece through three parts, namely the skin, the metal blocking piece and the fixing ring, has lower passive mass and optimizes the mass ratio of the pulse engine.
(5) The tight pressing part of the restraint ring at the edge of the metal blocking piece is of a gear-shaped structure, the opening pressure is met by adjusting the thickness of the blocking piece and the area of the gear-shaped structure, and the specific thickness and area can be determined by tests.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments thereof, made with reference to the following drawings:
FIG. 1 is a schematic structural diagram of a rail-controlled engine metal integrated skin according to an embodiment of the invention;
FIG. 2 is a skin structure of an embodiment of the present invention;
fig. 3 is a view illustrating a metal patch structure according to an embodiment of the present invention.
1-skin body 2-confinement ring
3-metal plug sheet 4-small nozzle orifice structure
Detailed Description
The invention is further illustrated by the following examples.
The invention provides a metal integrated skin structure suitable for a rail-controlled engine, which mainly comprises: comprises a skin body, a restraint ring and a metal plug sheet body;
the metal plug body is used for covering a nozzle of the rail-controlled engine, the edge of the metal plug body is designed into a gear-shaped structure, the edge of the gear-shaped structure is attached to one side of the inner profile of the restraint ring, the outer profile of the restraint ring is attached to the skin, and the three parts are connected in a mechanical contact type fixing mode.
The skin body is used for pneumatically shaping and fixing the plug sheet combined structure; the rail control engine bears pneumatic external load when not in work and is integrally opened when in work, so that a gas channel is smoothly formed; the metal hard constraint ring part fixes the metal plug sheet at the small nozzle orifice, the outer wall surface is designed into a structural form matched with the inner profile surface of the skin, the inner profile surface is designed into a structural form matched with the nozzle outlet, the part compressed by the metal plug sheet provides pneumatic external load bearing pressing force for the metal plug sheet, and the metal plug sheet can be smoothly opened to form a gas channel when the rail-controlled engine works.
Further, the integral skin in the metal integral skin structure is processed and formed, a gas channel of a small nozzle opening is reserved, the metal blocking sheet is fixed at the gas channel opening of the small nozzle through a restraining ring, and a mechanical contact type fixing mode is adopted among the skin, the metal blocking sheet and a fixing ring; the outer load intensity is considered during skin design, the pressure numerical value when the outer load and the small spray pipe are opened is considered during metal plugging piece design, the metal plugging piece structure at the tight part of the restraint ring is designed to be a gear structure, the metal plugging piece is opened, namely the metal plugging piece gear structure is deformed to lose restraint force, the opening mode is opened in a nondestructive mode, the appearance is guaranteed through mechanical dimension, and the opening pressure is more consistent.
When the rail-controlled engine does not work, the metal plug body is fixed at the orifice of the small nozzle by the restraint ring, the outer molded surface of the restraint ring is designed into a structural form matched with the inner molded surface of the skin, the inner molded surface is designed into a structural form matched with the outlet of the nozzle, the metal plug body is compressed to provide pressing force required by pneumatic external load bearing of the metal plug, and the metal plug body and the integrated skin structure are jointly used as a pneumatic appearance shaping structure of the rail-controlled engine to bear the pneumatic external load; when the rail-controlled engine works, under the action of air flow, the gear-shaped edge of the metal plug piece body deforms and loses the restraining force to open to form a gas channel.
Example 1
The invention will be described in more detail below with reference to the accompanying drawings of embodiments of the invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
Fig. 1 is a schematic view of the metal integrated skin structure of the rail-controlled engine according to the present invention. The figure illustrates the structural combination relationship of the skin, the metal blocking sheet, the restraining ring and the small nozzle opening.
According to the function realization characteristics of the rail-controlled engine skin structure, the metal integrated skin structure adopts an integral structure formed by mechanically assembling three parts, and comprises a skin body 1, a restraint ring 2 and a metal plug body 3.
Covering body 1, whole machine-shaping, the material is 30Cr3SiNiMoVA superhigh strength alloy steel, and the thickness value range is: 0.7-0.9 mm. According to the external load requirement of a certain type of engine, the wall thickness of the engine is determined to be 0.8 mm.
The restraint ring 2 is made of titanium alloy, and the thickness value range of the restraint ring is as follows: 0.25-0.35 mm. In this embodiment, the thickness is 0.3mm, and the interior profile is laminated with metal jam piece and covering respectively mutually.
The metal plug body 3 is made of aluminum alloy, and the edge of the metal plug body is designed into a gear-shaped structure. The mechanical size of each gear on the edge of the gear-shaped structure of the metal plug body is consistent, so that the consistency of the opening pressure of the plug is ensured. Gear column structure edge and restraint ring laminating, through its geometric appearance size of control, thickness promptly and with gear column structure's laminating area to satisfy required opening pressure, the thickness of metal closure piece and gear column structure laminating area are confirmed by product test, in this embodiment, every gear thickness in metal closure piece body gear column structure edge is 0.15mm, and gear department opening angle is 60.
The small nozzle opening structure 4 provides a supporting function for explaining the invention, and different opening sizes and structural forms can be designed according to different requirements.
Firstly, according to the shaping requirement of the pneumatic appearance of the rail-controlled engine, the structural form of the skin adopts integral processing and forming; according to the design criteria of a rail-controlled engine, gas is sprayed out from a small nozzle during working, and the transverse overload of the projectile body is provided to realize the rail-changing function, so that a circular gap is reserved in the small nozzle of the skin; by designing the gear-shaped metal plug to be installed at the gap of the skin, on one hand, the pneumatic shaping effect of the skin is realized, on the other hand, components in the small spray pipe are protected while external load is borne, and the gear-shaped metal plug can be smoothly opened when the rail-controlled engine works to form a gas channel, and the geometric dimension of the gear-shaped structure is determined by the opening pressure of the plug; the design restraint ring is used for fixing the metal plugging sheet at the position of the nozzle opening, the outer molded surface is matched with the inner molded surface of the skin in place, the inner molded surface is matched with the outlet structure of the small nozzle in place, and the skin can be installed in place while the metal plugging sheet is fixed.
The rail-controlled engine metal integrated skin structure has the effects that the blocking piece can be smoothly opened when the rail-controlled engine is pneumatically shaped and the small spray pipe works, and the connecting and fixing part of the rail-controlled engine metal integrated skin structure can be designed according to the specific requirements of the rail-controlled engine.
The structural form of the invention reduces the processing difficulty of the skin and optimizes the processing manufacturability; the structure form of the gear-shaped metal blocking piece is adopted, the opening strength is ensured through the mechanical size, and the opening consistency of the blocking piece is improved; and a mechanical contact type fixing mode is adopted, so that the assembly difficulty is reduced, the assembly time is reduced, and the economy is improved.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make variations and modifications of the present invention without departing from the spirit and scope of the present invention by using the methods and technical contents disclosed above.
Claims (9)
1. A metal integrated skin structure suitable for a rail-controlled engine is characterized by comprising a skin body, a restraint ring and a metal plug sheet body;
the metal plug body is used for covering a nozzle of the rail-controlled engine, the edge of the metal plug body is designed into a gear-shaped structure, the edge of the gear-shaped structure is attached to one side of the inner molded surface of the constraint ring, the outer molded surface of the constraint ring is attached to the skin body, and the metal plug body, the inner molded surface of the constraint ring and the skin body are connected in a mechanical contact type fixing mode;
when the rail-controlled engine does not work, the metal plug body is fixed at the small nozzle orifice by the restraint ring, the outer molded surface of the restraint ring is designed into a structural form matched with the inner molded surface of the skin, the inner molded surface is designed into a structural form matched with the nozzle outlet, the metal plug body is compressed to provide pressing force required by pneumatic external load bearing of the integral skin structure, and the metal plug body and the skin body are jointly used as a pneumatic appearance shaping structure of the rail-controlled engine to bear the pneumatic external load; when the rail-controlled engine works, under the action of air flow, the gear-shaped edge of the metal plug piece body deforms to lose constraint force, and a gas channel is formed by opening the metal plug piece body.
2. The metal integrated skin structure suitable for the rail-controlled engine according to claim 1, wherein the skin body is integrally processed by an integrated molding processing method, and a gas channel of a nozzle opening is reserved.
3. The metal integrated skin structure suitable for the rail-controlled engine according to claim 1, wherein the material of the skin body is 30Cr3 SiNiMoVA.
4. The metal integrated skin structure suitable for the rail-controlled engine according to claim 1, wherein the thickness of the skin body ranges from: 0.7-0.9 mm.
5. The metal integrated skin structure suitable for the rail-controlled engine according to claim 1, wherein the thickness of the constraining ring ranges from: 0.25-0.35 mm.
6. The metal integral skin structure for an orbital control engine as set forth in claim 1, wherein said constraining ring is made of titanium alloy.
7. The metal integrated skin structure suitable for the rail-controlled engine according to claim 1, wherein the metal plug body is made of aluminum alloy.
8. The metal integrated skin structure suitable for the rail-controlled engine according to claim 1, wherein the mechanical dimensions of each gear at the edge of the gear-like structure of the metal patch body are consistent, so as to ensure the consistency of the opening pressure of the patch.
9. The metal integral skin structure suitable for the rail-controlled engine according to claim 1, wherein the thickness of each gear at the edge of the gear-like structure of the metal patch body is 0.15mm, and the opening angle at the gear is 60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011458051.0A CN112576410B (en) | 2020-12-10 | 2020-12-10 | Rail accuse engine metal body skin structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011458051.0A CN112576410B (en) | 2020-12-10 | 2020-12-10 | Rail accuse engine metal body skin structure |
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| Publication Number | Publication Date |
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| CN112576410A CN112576410A (en) | 2021-03-30 |
| CN112576410B true CN112576410B (en) | 2022-04-12 |
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| CN202011458051.0A Active CN112576410B (en) | 2020-12-10 | 2020-12-10 | Rail accuse engine metal body skin structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113756987B (en) * | 2021-08-27 | 2022-11-18 | 北京机械设备研究所 | Manufacturing method of open type shell of rotary rail control engine and shell |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6179225B1 (en) * | 1998-07-17 | 2001-01-30 | Societe Nationale d'Etude et de Construction de Moteurs d'Aviation “SNECMA” | Turbo jet engine exhaust nozzle with masked gas jet |
| CN106089493A (en) * | 2016-06-17 | 2016-11-09 | 上海新力动力设备研究所 | A kind of missile propulsive plant jet pipe rubber blanking cover |
| CN209068549U (en) * | 2018-11-02 | 2019-07-05 | 河南羽流智能科技有限公司 | A kind of igniter of high-altitude pack boronitriding |
| CN110259608A (en) * | 2019-06-19 | 2019-09-20 | 湖北三江航天红峰控制有限公司 | A kind of solid rail control engine jet pipe blanking cover |
-
2020
- 2020-12-10 CN CN202011458051.0A patent/CN112576410B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6179225B1 (en) * | 1998-07-17 | 2001-01-30 | Societe Nationale d'Etude et de Construction de Moteurs d'Aviation “SNECMA” | Turbo jet engine exhaust nozzle with masked gas jet |
| CN106089493A (en) * | 2016-06-17 | 2016-11-09 | 上海新力动力设备研究所 | A kind of missile propulsive plant jet pipe rubber blanking cover |
| CN209068549U (en) * | 2018-11-02 | 2019-07-05 | 河南羽流智能科技有限公司 | A kind of igniter of high-altitude pack boronitriding |
| CN110259608A (en) * | 2019-06-19 | 2019-09-20 | 湖北三江航天红峰控制有限公司 | A kind of solid rail control engine jet pipe blanking cover |
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| CN112576410A (en) | 2021-03-30 |
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