CN112431694A - Expandable spray pipe using flexible material and external truss structure - Google Patents
Expandable spray pipe using flexible material and external truss structure Download PDFInfo
- Publication number
- CN112431694A CN112431694A CN202011309765.5A CN202011309765A CN112431694A CN 112431694 A CN112431694 A CN 112431694A CN 202011309765 A CN202011309765 A CN 202011309765A CN 112431694 A CN112431694 A CN 112431694A
- Authority
- CN
- China
- Prior art keywords
- flexible
- section
- truss
- nozzle
- spray pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
- F02K1/822—Heat insulating structures or liners, cooling arrangements, e.g. post combustion liners; Infra-red radiation suppressors
-
- 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
- F02K9/974—Nozzle- linings; Ablative coatings
-
- 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
- F02K9/976—Deployable nozzles
Abstract
The invention provides an expandable spray pipe using a flexible material and an external truss structure. The nozzle submerged rigid section consists of a submerged section main body convenient to mount, a rigid expansion section, a front throat lining and a rear throat lining and is bonded with the rear end enclosure, wherein the rear end enclosure is additionally provided with a layer of heat-proof lining in the shell to isolate the heat of the combustion chamber; the rigid section is followed by the flexible section of the nozzle, in order to ensure the structural and profile integrity of the nozzle and the rear seal head, the inner wall surfaces of the flexible section and the rigid section are added with heat insulation and ablation-resistant coatings, and the flexible section is made of ablation-resistant elastic materials. The invention provides an expandable spray pipe using a flexible material and an external truss structure, which can realize the height compensation characteristic; and through the size of design truss structure and flexible material, can realize the pneumatic profile of more efficient expansion section, effectively promote spray tube full airspace performance and aircraft overall performance.
Description
Technical Field
The invention relates to an expandable spray pipe, in particular to an expandable spray pipe using a flexible material and an external truss structure, and belongs to the technical field of aerospace.
Background
The economy and efficiency of flight are important factors to consider first in the design of aircraft powerplants. For civil airliners, the improvement of the propulsion efficiency means that more fuel oil is saved and the operation cost is saved; for military aircraft, the improvement of the propulsion efficiency can enable the operational aircraft or missile weapons to have higher range and stronger operational capacity; and for the rocket for spaceflight, the propelling efficiency in the orbit entering process is improved, and more effective loads can be brought. Therefore, improving the propulsion efficiency of aircraft propulsion devices has been a popular area of research.
Regardless of the aircraft, generally, there will be a fixed design height for the aircraft. At this height, full expansion of the gas in the nozzle is achieved, and the nozzle is most efficient. However, when the aircraft such as the single-stage rocket-launched orbit flies across airspace, the environmental pressure deviates from the design, which may reduce the efficiency of the nozzle and further affect the propulsion performance.
In order to make up the defect that the efficiency of the traditional spray pipe is reduced at the non-working height, the concept of the height compensation spray pipe is provided, and the height compensation spray pipe can be specifically divided into a plug type spray pipe, an extensible spray pipe, a double-throat spray pipe, a double-bell spray pipe, an expansion bias flow spray pipe and other forms according to different compensation modes. The double-bell-shaped spray pipe has the advantages of simple structure, high working reliability, variable expansion ratio and the like, and has very wide development prospect.
Therefore, on the basis of the concept of the double-bell-shaped nozzle, the flexible material is combined with a truss structure with mature technology and high reliability, and the flexible deployable nozzle is formed. The traditional fixed expansion ratio spray pipe is in an underexpansion or over-expansion state at a non-design height, so that the loss of the propulsion efficiency is caused; in contrast, flexible spouts have two significant advantages: firstly, the molded surface of the spray pipe can be changed in real time according to the change of the flying height to adjust the expansion ratio of the spray pipe, so that the complete expansion of the spray pipe with any height is realized, and the engine is in the optimal working state; the expansion section of the flexible spray pipe can shorten the length between the projectile bodies through expansion and contraction, so that precious space in the engine is saved; and thirdly, the expansion section profile of the spray pipe has designability, and the optimal pneumatic profile of the spray pipe is achieved under different working conditions through the size design of a truss structure and a flexible material.
Disclosure of Invention
Aiming at the defect that the propelling efficiency of the traditional fixed expansion ratio nozzle is reduced at a non-design height, the invention provides the expandable nozzle using the flexible material and the external truss structure, the pneumatic profile and the expansion ratio of the nozzle can be changed according to different working heights by expanding the truss structure and deforming the flexible material, and the nozzle is in a fully expanded state in the whole flying process, so that the efficiency is maximized, and the flying performance of an aircraft is improved.
The purpose of the invention is realized as follows: the submerged flexible nozzle comprises a rigid section of the submerged flexible nozzle, a combustion chamber rear end socket, a flexible nozzle truss structure and a nozzle flexible section. The nozzle submerged rigid section consists of a submerged section main body convenient to mount, a rigid expansion section, a front throat lining and a rear throat lining and is bonded with the rear end enclosure, wherein the rear end enclosure is additionally provided with a layer of heat-proof lining in the shell to isolate the heat of the combustion chamber; the rigid section is followed by the flexible section of the nozzle, in order to ensure the structural and profile integrity of the nozzle and the rear seal head, the inner wall surfaces of the flexible section and the rigid section are added with heat insulation and ablation-resistant coatings, and the flexible section is made of ablation-resistant elastic materials. The flange plate is connected with the rear end enclosure through threads, 6 fixed bases are uniformly arranged in the annular direction, and 6 truss devices are arranged in total; each set of truss device is driven by a servo motor, and a movable sleeve connected with a connecting rod moves through the rotation of a shaft connected with the motor and the connecting rod to drive the whole truss device to be unfolded and change the molded surface and the outlet expansion ratio of the flexible expansion section; the truss fixing base on each spray pipe outer surface is hinged with a single connecting rod and a group of double connecting rods, in order to fix the truss device and not to damage the material structure of the flexible section, a layer of flexible membrane covers the spray pipe outer surface, and the rivet penetrates through the truss fixing base and the flexible membrane to fix the base of the truss device.
The invention also includes such structural features:
1. the truss fixing base on the outer molded surface of the spraying pipe is hinged with a single connecting rod and a group of double connecting rods, and all the connecting rods are hinged with the base through a circular ring structure.
2. The truss device adopts a diamond truss, a single connecting rod and a group of double connecting rods are connected through a rotating shaft of the scissors to rotate around a shaft, and the fixed base is driven to move.
3. The flexible film on the outer surface of the spray pipe completely covers the flexible section of the spray pipe, the rigid section of the spray pipe extends to some extent, and a special-shaped fixed base is arranged on the flexible film on the rigid section.
4. The truss fixed base at the tail part of the flexible section of the spray pipe adopts a special-shaped fixed base.
5. The truss device is driven to work through the rotating shaft and the sliding block by using a servo motor instead of a hydraulic actuating device.
6. In order to protect the integrity of the inner profile of the flexible section and prevent ablation of the flexible material, an anti-ablation coating is added on the inner profile of the flexible section.
7. The convergent section of the spray pipe adopts a submerged structure, so that the length of the spray pipe can be effectively reduced.
Compared with the prior art, the invention has the beneficial effects that:
1. the extensible part of the spray pipe is made of flexible materials, the molding surface of the expansion section and the expansion ratio of an outlet can be guaranteed to be changed along with the elevation in a controlled mode, real-time complete expansion from the ground to the high altitude is achieved, and the full-airspace performance of the spray pipe is effectively improved.
2. The truss structure is mature in technology, the flexible material is driven to be unfolded by the truss structure, the pneumatic molded surface is supported and regulated in real time to be fully expanded, and the reliability of the system is improved.
3. The flexible membrane is used for covering the surface of the spray pipe, the truss fixing base and the flexible membrane are penetrated through the rivet to fix the truss device, the situation that the fixed truss structure penetrates through the flexible material of the expansion section and the integrity of the spray pipe structure is damaged can be avoided, the bonding area is increased, and the overall structural strength of the expansion section is improved.
4. The flexible section and the throat section are coated with heat-resistant and ablation-resistant coatings, so that the inner molded surface of the spray pipe can be effectively protected, and particularly, the flexible section coating mainly takes liquefied flow and evaporation heat absorption to ensure that the main body structure of the flexible section cannot be ablated in the unfolding process.
5. The use of a small servo motor to drive the truss device reduces the redundant volume and mass compared to a hydraulic actuation mechanism.
6. The numerical calculation result of fluid-solid coupling shows that: the flexible section has larger initial expansion and lower total temperature and pressure, and compared with the throat part, the flexible section is subjected to smaller force and heat load and has weaker ablation; the low-cost No. 45 steel is used as a material, the mechanical property of the truss structure is analyzed, and the beam with the inner diameter of 0.5mm and the outer diameter of 2mm can meet the design requirement.
The invention provides an expandable spray pipe using a flexible material and an external truss structure, which can realize the height compensation characteristic; and through the size of design truss structure and flexible material, can realize the pneumatic profile of more efficient expansion section, effectively promote spray tube full airspace performance and aircraft overall performance.
Drawings
FIG. 1 is an overall isometric view of an expandable nozzle of the present invention using a flexible material and an external truss structure;
FIG. 2 is a cross-sectional view of a nozzle structure (not including a truss) of the present invention utilizing a flexible material and an external truss structure for the deployable nozzle;
FIG. 3a is an isometric view of a portion of a truss structure of an expandable nozzle of the present invention utilizing a flexible material and an external truss structure;
FIG. 3b is an enlarged view of a portion of FIG. 3 a;
FIG. 4 is an isometric view of an external face truss attachment structure and a diamond structure of an expandable nozzle of the present invention using a flexible material and an external truss structure.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The invention provides an expandable spray pipe using a flexible material and an external truss structure.
Fig. 1 shows the overall structure of the flexible spout.
Referring to fig. 1, wherein 1-1 is a rigid section (fixed section) of a submerged flexible nozzle, 1-2 is a combustion chamber rear end socket, 1-3 is a flexible nozzle truss structure, and 1-4 is a nozzle flexible section composed of multiple layers of ablation-resistant materials.
FIG. 2 is a cross-sectional view of a nozzle body that does not include a truss structure.
Referring to fig. 2, wherein 2-1 is a rigid expansion section, 2-2 is a throat insert, 2-3 is a front throat insert, 2-4 is a nozzle, a rear head transition section, 2-5 is a rear head liner, 2-6 is a rear head shell, 2-7 is a rigid section fixed flange, 2-8 is a nozzle flexible section, 2-9 is a flexible section coating, 2-10 is a flexible heat insulation ablation layer, 2-11 is a flexible film, and 2-12 is an ablation coating of the nozzle submerged section and the rigid section.
The rear seal head of the spray pipe consists of two parts, namely a 2-6 rear seal head shell for determining the shape and the basic profile of the rear seal head, and a 2-5 rear seal head lining which is attached to the inside of the 2-6 rear seal head shell and used for preventing gas and slag from being ablated and has a heat insulation effect; the spray pipe designed by the invention adopts a submerged design, so that the front end of the rigid section of the flexible spray pipe needs to extend into the interior of the rear end enclosure, the inner sides of the 2-4 spray pipes and the transition section of the rear end enclosure are the external profile of the submerged spray pipe, and the inner sides are bonded with the rear end enclosure, thereby achieving the purpose of connecting the spray pipe main body and the rear end enclosure; 2-3, the front throat liner is a convergent section of the submerged nozzle, the length is short, so the ablation condition is light, a phenolic resin material with low price and low ablation resistance can be adopted, while the 2-2 throat liner is positioned at the throat section of the nozzle, and the throat liner is the area where the whole nozzle is most seriously ablated, so a tungsten copper infiltrated material with high price and high ablation resistance is required to be adopted, the volume of the 2-2 throat liner is designed to be small for saving the cost, meanwhile, in order to strengthen the heat protection capability of the throat liner part, a layer of 2-12 ablation coatings of the submerged section and the rigid section of the nozzle are added, and the throat section of the nozzle is protected by vaporization heat absorption and thermal decomposition reaction; 2-7, connecting the rigid section fixing flange plate with the rear end enclosure through threads to mount a truss structure base; 2-1, the rigid expansion section is a fixed part of the submerged flexible nozzle and does not deform along with the expansion and contraction of the truss; the 2-8 flexible section is a deformation area where the whole submerged flexible nozzle and the truss are interacted, and consists of a 2-9 flexible section coating, a 2-10 flexible heat insulation ablation layer and a 2-11 flexible film; the 2-9 flexible section coating is made of ablation-resistant materials, and liquefaction and evaporation are used for absorbing heat in the fuel gas ablation process, so that the 2-10 flexible section heat-insulation ablation layer is not directly contacted with high-temperature fuel gas; 2-10 flexible heat insulation ablation layer made of ablation-resistant elastic material can deform along with the movement of the truss mechanism, so as to achieve controlled change of outlet expansion ratio and the profile of the expansion section; the 2-11 flexible membrane is a thin layer covering the flexible section and part of the rigid section of the nozzle and is used for fixing the truss structure.
Fig. 3 is a partial enlargement of the connection between the truss and the flange and the installation of the servo mechanism.
Referring to fig. 2, wherein 3-1 is a movable sleeve, 3-2 is a sleeve connecting rod, 3-3 is a servo motor, 3-4 is a fixed base, 3-5 is a fixed base bearing limit bracket, 3-6 is a rigid segment fixed base, 3-7 is a bearing, 3-8 is a connecting rod, and 3-9 is a plane hinge device.
3-6, the rigid section fixing base is the first fixing base of the whole truss mechanism, and is fixed on the outer molded surface of the spray pipe through a rivet and a flexible film, so that the fixing base plays a role in fixing a fulcrum of the truss mechanism; 6 3-4 fixed bases are uniformly distributed on the rigid section flange plate of the flexible spray pipe along the annular direction, each 3-4 fixed base is connected with two 3-2 sleeve connecting rods, two 3-3 servo motors are additionally arranged on the connecting shaft, and the connecting shaft is driven to rotate to drive the 3-2 sleeve connecting rods to move; the lower half part of the 3-4 fixed base is provided with a 3-5 bearing limit bracket which is a support frame of a 3-8 connecting rod, the 3-8 connecting rod is connected with the 3-5 bearing limit bracket through a 3-7 bearing, and the 3-8 connecting rod can rotate around a shaft through the 3-7 bearing; the 3-9 plane hinge device connects the tail end of the 3-2 sleeve connecting rod with the 3-1 movable sleeve, the 3-1 movable sleeve slides on the 3-8 connecting rod under the action of the rotation motion of the 3-2 sleeve connecting rod, and the motion track of the 3-1 movable sleeve can be controlled by adjusting the rotation center position and the length of the 3-8 connecting rod and the 3-2 sleeve connecting rod, so that the adjustment of the flexible structure profile and the expansion ratio of the spray pipe is realized.
Fig. 4 shows the fixed structure of the external profile truss of the nozzle pipe and the diamond structure of the movable part of the truss.
Referring to fig. 4, wherein 4-1, 4-2, 4-5 and 4-6 are double connecting rods, 4-3 is a circular hinged base, 4-4 is a single connecting rod, 4-7 is a wear-resistant flexible gasket, 4-8 is a limiting device, 4-9 is a fixed base, 4-10 is a flexible membrane, 4-11 is a flexible thermal insulation ablation layer and 4-12 is a rivet.
The 4-1, 4-2-double connecting rods and the 4-4 single connecting rods are connected with the 4-9 fixed base through the 4-3 circular ring hinge base, the double connecting rods, the single connecting rods and the circular ring hinge base jointly form a movement unit of the truss mechanism, and when the double connecting rods rotate in one direction, the single connecting rods rotate in the opposite direction under the action of the circular ring hinge mechanism, so that the diamond truss mechanism is stretched; the rotating shaft hinges the 4-5 and 4-6 double connecting rods and the 4-4 single connecting rod together to form a pair of scissors, and 4-7 wear-resistant flexible gaskets are added between the 4-5 and 4-6 double connecting rods and the 4-8 single connecting rod to reduce the friction loss between the parts during movement; the 4-11 flexible heat insulation ablation layer is a main body of the flexible expansion section, a layer of 4-10 flexible film covers the flexible expansion section, 4-12 rivets penetrate through the 4-10 flexible film and the 4-9 fixed base, and the 4-9 fixed base is fixed on the nozzle main body to play a role of fixing a truss without damaging the structure of the 4-11 flexible heat insulation ablation layer.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
The present invention provides an expandable nozzle using a flexible material and an external truss structure. For the nozzle of an aircraft, in order to realize complete expansion, the nozzle expansion ratio is different on different flight heights, and the nozzle with a fixed profile has performance loss on the ground and at overhigh altitude. Therefore, in the design of the invention, the expansion section of the spray pipe is freely unfolded and deformed by taking the double-bell-shaped spray pipe as a base, using the flexible and extensible elastic material and combining with the truss structure for supporting and regulating the pneumatic profile. The invention can not only be adjusted to a proper expansion ratio under different working heights, but also achieve the effect of real-time height compensation; furthermore, high-efficiency pneumatic profiles under different altitudes can be realized, and the combination of the high-efficiency pneumatic profiles and the high-efficiency pneumatic profiles can greatly improve the performance and efficiency of the spray pipe.
Claims (10)
1. An expandable nozzle using a flexible material and an external truss structure, comprising: the device comprises a rigid section of a submerged flexible nozzle, a combustion chamber rear end socket, a flexible nozzle truss structure and a nozzle flexible section; the nozzle submerged rigid section consists of a submerged section main body convenient to mount, a rigid expansion section, a front throat lining and a rear throat lining, and is bonded with the rear end enclosure, wherein the rear end enclosure is additionally provided with a layer of heat-proof lining in the shell to isolate the heat of the combustion chamber; the rigid section is followed by the flexible section of the spray pipe, in order to ensure the structural and molded surface integrity of the spray pipe and the rear seal head, the inner wall surfaces of the flexible section and the rigid section are added with heat insulation and ablation-resistant coatings, and the flexible section is made of an ablation-resistant elastic material; the flange plate is connected with the rear end enclosure through threads, 6 fixed bases are uniformly arranged in the annular direction, and 6 truss devices are arranged in total; each set of truss device is driven by a servo motor, and a movable sleeve connected with a connecting rod moves through the rotation of a shaft connected with the motor and the connecting rod to drive the whole truss device to be unfolded and change the molded surface and the outlet expansion ratio of the flexible expansion section; the truss fixing base on each spray pipe outer surface is hinged with a single connecting rod and a group of double connecting rods, in order to fix the truss device and not to damage the material structure of the flexible section, a layer of flexible membrane covers the spray pipe outer surface, and the rivet penetrates through the truss fixing base and the flexible membrane to fix the base of the truss device.
2. A deployable nozzle using flexible material and an external truss structure, as claimed in claim 1, wherein: the truss fixing base on the outer molded surface of the spraying pipe is hinged with a single connecting rod and a group of double connecting rods, and all the connecting rods are connected with the base through a circular ring hinge structure.
3. A deployable nozzle using flexible material and an external truss structure, as claimed in claim 1 or claim 2, wherein: the unfolding part of the truss device adopts a diamond truss and scissors hinges, and a single connecting rod and a group of double connecting rods are hinged through a rotating shaft of the scissors.
4. A deployable nozzle using flexible material and an external truss structure, as claimed in claim 1 or claim 2, wherein: the truss apparatus used had 6 sets.
5. A deployable nozzle using flexible material and an external truss structure, as claimed in claim 3, wherein: the truss apparatus used had 6 sets.
6. A deployable nozzle using flexible material and an external truss structure, as claimed in claim 1, wherein: the flexible film on the outer surface of the spray pipe not only completely covers the flexible section of the spray pipe, but also extends to the front edge of the rigid section.
7. A deployable nozzle using flexible material and an external truss structure, as claimed in claim 1, wherein: the truss fixed base at the tail part of the flexible section of the spray pipe adopts a special-shaped fixed base.
8. A deployable nozzle using flexible material and an external truss structure, as claimed in claim 1, wherein: the truss device is driven to work through the rotating shaft and the sliding block by using a servo motor instead of a hydraulic actuating device, namely only 1 driving degree of freedom of the truss structure is ensured.
9. A deployable nozzle using flexible material and an external truss structure, as claimed in claim 1, wherein: in order to protect the integrity of the inner profile of the flexible section and prevent ablation of the flexible material, an anti-ablation coating is added on the inner profile of the flexible section.
10. A deployable nozzle using flexible material and an external truss structure, as claimed in claim 1, wherein: the convergent section of the spray pipe adopts a submerged structure, so that the length of the spray pipe can be effectively reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011309765.5A CN112431694B (en) | 2020-11-20 | 2020-11-20 | Expandable spray pipe using flexible material and external truss structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011309765.5A CN112431694B (en) | 2020-11-20 | 2020-11-20 | Expandable spray pipe using flexible material and external truss structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112431694A true CN112431694A (en) | 2021-03-02 |
| CN112431694B CN112431694B (en) | 2021-11-05 |
Family
ID=74694582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011309765.5A Active CN112431694B (en) | 2020-11-20 | 2020-11-20 | Expandable spray pipe using flexible material and external truss structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112431694B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113153581A (en) * | 2021-04-28 | 2021-07-23 | 哈尔滨工程大学 | Flexible double-bell-shaped spray pipe with structure of flow charging pipeline coated by extensible material |
| CN114658568A (en) * | 2022-04-19 | 2022-06-24 | 湖北三江航天江北机械工程有限公司 | Ball and socket nozzle with anti-twist feature |
| CN115155783A (en) * | 2022-05-19 | 2022-10-11 | 杨莉 | Afforestation is recovery plant for waste disposal |
| CN115559831A (en) * | 2022-12-05 | 2023-01-03 | 东方空间(西安)宇航技术有限公司 | Pre-deflection angle adjusting system and method for flexible spray pipe of rocket engine |
| CN117329027A (en) * | 2023-11-28 | 2024-01-02 | 成都志力科技发展有限责任公司 | Telescopic tail nozzle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5102050A (en) * | 1991-01-22 | 1992-04-07 | General Electric Company | Divergent flap actuation system for two-dimensional convergent - divergent turbojet exhaust nozzle |
| US5813611A (en) * | 1996-09-27 | 1998-09-29 | United Technologies Corporation | Compact pressure balanced fulcrum-link nozzle |
| CN106121859A (en) * | 2016-08-23 | 2016-11-16 | 西北工业大学 | A kind of adjusting means for wide speed territory structure changes jet pipe |
| CN107054670A (en) * | 2016-01-07 | 2017-08-18 | 波音公司 | The jet engine mounting column of performance enhancement |
| CN110657044A (en) * | 2019-08-30 | 2020-01-07 | 中国科学院工程热物理研究所 | Integrated structure of electric-driven afterburner and area-adjustable tail nozzle |
-
2020
- 2020-11-20 CN CN202011309765.5A patent/CN112431694B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5102050A (en) * | 1991-01-22 | 1992-04-07 | General Electric Company | Divergent flap actuation system for two-dimensional convergent - divergent turbojet exhaust nozzle |
| US5813611A (en) * | 1996-09-27 | 1998-09-29 | United Technologies Corporation | Compact pressure balanced fulcrum-link nozzle |
| CN107054670A (en) * | 2016-01-07 | 2017-08-18 | 波音公司 | The jet engine mounting column of performance enhancement |
| CN106121859A (en) * | 2016-08-23 | 2016-11-16 | 西北工业大学 | A kind of adjusting means for wide speed territory structure changes jet pipe |
| CN110657044A (en) * | 2019-08-30 | 2020-01-07 | 中国科学院工程热物理研究所 | Integrated structure of electric-driven afterburner and area-adjustable tail nozzle |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113153581A (en) * | 2021-04-28 | 2021-07-23 | 哈尔滨工程大学 | Flexible double-bell-shaped spray pipe with structure of flow charging pipeline coated by extensible material |
| CN114658568A (en) * | 2022-04-19 | 2022-06-24 | 湖北三江航天江北机械工程有限公司 | Ball and socket nozzle with anti-twist feature |
| CN114658568B (en) * | 2022-04-19 | 2024-03-29 | 湖北三江航天江北机械工程有限公司 | Ball socket nozzle with anti-twist |
| CN115155783A (en) * | 2022-05-19 | 2022-10-11 | 杨莉 | Afforestation is recovery plant for waste disposal |
| CN115155783B (en) * | 2022-05-19 | 2023-08-01 | 杨莉 | Recovery plant is used in afforestation discarded object processing |
| CN115559831A (en) * | 2022-12-05 | 2023-01-03 | 东方空间(西安)宇航技术有限公司 | Pre-deflection angle adjusting system and method for flexible spray pipe of rocket engine |
| CN115559831B (en) * | 2022-12-05 | 2023-03-24 | 东方空间(西安)宇航技术有限公司 | Pre-deflection angle adjusting system and method for flexible spray pipe of rocket engine |
| CN117329027A (en) * | 2023-11-28 | 2024-01-02 | 成都志力科技发展有限责任公司 | Telescopic tail nozzle |
| CN117329027B (en) * | 2023-11-28 | 2024-01-26 | 成都志力科技发展有限责任公司 | Telescopic tail nozzle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112431694B (en) | 2021-11-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112431694B (en) | Expandable spray pipe using flexible material and external truss structure | |
| US7581399B2 (en) | Damped coil pin for attachment hanger hinge | |
| US9580183B2 (en) | Actuation mechanism for a convertible gas turbine propulsion system | |
| US4043508A (en) | Articulated plug nozzle | |
| US6938408B2 (en) | Thrust vectoring and variable exhaust area for jet engine nozzle | |
| US8215580B2 (en) | Attachment of a multiflow turbojet engine to an aircraft | |
| US8615980B2 (en) | Gas turbine engine with noise attenuating variable area fan nozzle | |
| US5746391A (en) | Mounting for coupling a turbofan gas turbine engine to an aircraft structure | |
| EP1900909B1 (en) | Variable area nozzle in a gas turbine engine | |
| US8429893B2 (en) | Airflow modulation for dual mode combined cycle propulsion systems | |
| US4712750A (en) | Temperature control device for jet engine nacelle associated structure | |
| US2984068A (en) | Propulsive nozzle system for reaction propulsion units | |
| EP2610471B1 (en) | Variable area fan nozzle | |
| US20100040466A1 (en) | Bypass turbojet engine nacelle | |
| KR100453669B1 (en) | Compact pressure balanced fulcrum-link nozzle | |
| US4039146A (en) | Variable cycle plug nozzle and flap and method of operating same | |
| KR100452668B1 (en) | Enclosed pressure balanced sync ring nozzle | |
| US9470603B2 (en) | Morphing ceramic composite components for hypersonic wind tunnel | |
| US3295764A (en) | Variable area exhaust nozzle | |
| US4552309A (en) | Variable geometry nozzles for turbomachines | |
| CN112539116B (en) | Variable throat diameter and variable expansion ratio spray pipe structure | |
| US8371324B1 (en) | Collapsible supersonic inlet centerbody | |
| US4466573A (en) | Wet pipe device for turbojet engines | |
| US5110069A (en) | Single pivot overwing thrust reverser | |
| CN116378847B (en) | Single-drive lobe nozzle structure with heat transfer and structural reinforcement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |