CN113250853B - Vectoring nozzle and control method thereof - Google Patents
Vectoring nozzle and control method thereof Download PDFInfo
- Publication number
- CN113250853B CN113250853B CN202110645052.4A CN202110645052A CN113250853B CN 113250853 B CN113250853 B CN 113250853B CN 202110645052 A CN202110645052 A CN 202110645052A CN 113250853 B CN113250853 B CN 113250853B
- Authority
- CN
- China
- Prior art keywords
- wall
- nozzle
- telescopic arm
- spray pipe
- annular base
- 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.)
- Active
Links
Images
Classifications
-
- 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
- F02K1/002—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto with means to modify the direction of thrust vector
- F02K1/008—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto with means to modify the direction of thrust vector in any rearward direction
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Spray Control Apparatus (AREA)
Abstract
The invention discloses a vectoring nozzle and a control method thereof.A plurality of telescopic arm mechanisms with the same structure are circumferentially arranged to form an annular nozzle arm, and the telescopic arm mechanisms can be stretched and retracted along the axial direction of an annular base so that the outlet of the nozzle is formed into different steps, thereby controlling the flow direction of gas at the outlet of the nozzle, further changing the thrust direction and realizing the vectoring propulsion function. Therefore, the jet flow direction of the tail part of the aircraft engine can be controlled in a 360-degree all-around mode under the condition that the jet pipe does not deflect, complex motion control requirements such as torsion do not exist, the equipment structure is simplified, the control mode is simple, the complex control problem required by controlling the air flow direction by rotating the jet pipe is solved, and the jet angle of the jet pipe can be changed rapidly, efficiently and reliably.
Description
Technical Field
The invention belongs to the field of vector engines, and particularly relates to a vectoring nozzle and a control method thereof.
Background
In order to meet the increasingly complex maneuverability control requirements of a new aircraft in the air in the future, the installation of an aircraft engine with a thrust vectoring function becomes a necessary trend, and the vectoring thrust nozzle technology is one of the key core technologies in the aircraft engine for realizing the thrust vectoring function.
The vector propulsion engines which are subjected to the actual flight verification all rely on complicated and fine mechanical structures to control the deflection of an engine tail nozzle so as to generate vector propulsion power. At present, the thrust vectoring nozzle technology gradually develops towards the trend of simplifying the control structure and reducing the weight. For example, chinese patents CN201410253892.6, cn201910425150.x, CN201410739739.4, etc. all adopt different control schemes to optimize the vectoring thrust nozzle technology, and the beneficial effect of simplifying the control structure is achieved. However, the control method finally changes the jet direction of the jet flow of the aircraft engine tail through the deflection of the jet nozzle to realize the vector propulsion capability, which necessarily involves the interaction between the high-temperature tail gas of the aircraft engine and the structure of the jet nozzle, and has certain requirements on the material performance of the jet nozzle.
Therefore, how to reduce the complexity of a mechanical structure in the vectoring thrust nozzle technology and improve the stability of control is a problem to be solved urgently at present.
Disclosure of Invention
In view of the above defects or improvement requirements of the prior art, the invention provides a vectoring nozzle and a control method thereof, and aims to solve the technical problems of complex structure and unstable control mode of the conventional vectoring engine nozzle.
To achieve the above object, according to a first aspect of the present invention, there is provided a vectoring nozzle comprising an annular base and a plurality of identically configured telescopic arm mechanisms; the plurality of telescopic arm mechanisms are circumferentially arranged to form an annular spray pipe arm, one end of the annular spray pipe arm is connected with the annular base to serve as an inlet of a spray pipe, and the other end of the annular spray pipe arm serves as an outlet of the spray pipe; the telescopic arm mechanism can be extended and retracted along the axial direction of the annular base, so that the outlet of the spray pipe is formed into different steps, and the flow direction of gas at the outlet of the spray pipe is controlled.
Preferably, the telescopic arm mechanism comprises a fixed wall, a movable wall, a pull rod and a driving mechanism for driving the pull rod;
the fixed wall and the movable wall are in staggered butt joint; the pull rod is connected with the outer side of the movable wall; the driving mechanism is connected with the outer side of the fixed wall;
the pull rod and the driving mechanism are used for controlling the movable wall to slide along the fixed wall, so that the telescopic arm mechanism can axially extend and retract along the annular base.
Preferably, the driving mechanism is a hydraulic driving mechanism;
or, the driving mechanism is a linear motor;
or the driving mechanism is a pneumatic driving mechanism.
Preferably, the hydraulic drive mechanism includes a hydraulic oil chamber and a hydraulic oil passage.
Preferably, the fixed wall has a slot, the movable wall is embedded in the slot, and the slot is a sliding track of the movable wall.
Preferably, the pull rod is hinged with the outer side of the movable wall through a first hinge seat, and the driving mechanism is hinged with the outer side of the fixed wall through a second hinge seat.
Preferably, the outer side of the fixed wall is also connected with the annular base through a first connecting rod.
Preferably, one end of the first connecting rod is hinged with the outer side of the fixed wall through a third hinge seat, and the other end of the first connecting rod is hinged with the annular base through an annular base hinge seat;
the third hinge seat is further hinged to one end of the second connecting rod, and the second hinge seat is further hinged to the other end of the second connecting rod.
Preferably, the wall surface width of the fixed wall corresponds to a central angle of 5-10 degrees; the wall surface length of the movable wall is 2-3 times of the wall surface length of the fixed wall.
According to a second aspect of the present invention, there is provided a vectoring nozzle control method applied to a vectoring nozzle as described in the first aspect, comprising:
s1, determining a nozzle outlet target shape corresponding to the control instruction according to the vector propulsion control instruction;
s2, respectively calculating the movement stroke of each telescopic arm when the current shape of the spray pipe outlet is changed into the target shape based on the current telescopic amount of each telescopic arm;
and S3, controlling the expansion and contraction of each telescopic arm according to the movement stroke of each telescopic arm.
Generally, compared with the prior art, the above technical solution conceived by the present invention has the following advantages:
1. the vectoring nozzle provided by the invention is formed by circumferentially arranging a plurality of telescopic arm mechanisms with the same structure into an annular nozzle arm, wherein the telescopic arm mechanisms are telescopic along the axial direction of the annular base, so that the outlet of the nozzle is formed into different steps, the flow direction of gas at the outlet of the nozzle is controlled, the thrust direction is further changed, the jet angle of the nozzle can be quickly, efficiently and reliably changed, and the vectoring propulsion function is realized. The jet flow direction at the tail part of the aircraft engine can be controlled in a 360-degree all-around way under the condition that the jet pipe does not deflect, complex motion control requirements such as torsion and the like do not exist, the complex control problem required by jet flow direction control of the deflection jet pipe is solved, and the control algorithm is simple and quick in response; the equipment structure is simplified, and the manufacturing process difficulty and the production cost are reduced; in addition, the jet flow direction of the high-temperature tail gas is approximately parallel to the outlet structure of the spray pipe, so that the requirement on the performance of the structural material of the spray pipe is lowered.
2. The telescopic arm comprises a fixed wall, a movable wall, pull rods and a driving mechanism for driving the pull rods, each pull rod independently controls the movable arm to slide along the fixed arm so as to realize the stretching of each telescopic arm, so that the shape of a gas outlet of the spray pipe is changed, the flowing direction of gas at the gas outlet of the spray pipe is controlled, the control mode is simple, the reaction is rapid, the control synchronism can be enhanced, and the control delay is reduced.
3. The first hinge seat and the second hinge seat are adopted to realize the movable connection of the two ends of the pull rod with the movable wall and the fixed wall respectively, so that the movable wall can slide along the fixed wall more smoothly and can be prevented from being blocked, and the reliability of the whole structure is improved.
Drawings
FIG. 1 is a schematic view of a vectoring nozzle configuration provided by the present invention;
FIG. 2 is a side view of one of the vectoring nozzle provided by the present invention;
FIG. 3 is a second side view of the vectoring nozzle of the present invention;
FIG. 4 is a schematic view of the present invention providing a fixed wall and a movable wall assembly;
FIG. 5 is a schematic cross-sectional view of a retaining wall according to the present invention;
FIG. 6 is a shadow map of a vectoring nozzle jet test provided by the present invention;
FIG. 7 is a flow chart of a vectoring nozzle control method provided by the present invention.
The same reference numbers will be used throughout the drawings to refer to the same or like elements or structures, wherein:
1-an annular base; 2-fixing holes; 3-a second connecting rod; 4-hydraulic oil circuit; 5-a pull rod; 6-moving the wall; 7-a first hinge mount; 8-hydraulic oil chamber; 9-ring base hinge mount; 10-a first connecting rod; 11-fixed wall.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further 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. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The embodiment of the invention provides a vectoring nozzle, which comprises an annular base 1 and a plurality of telescopic arm mechanisms with the same structure, as shown in figure 1; the plurality of telescopic arm mechanisms are circumferentially arranged to form an annular spray pipe arm, one end of the annular spray pipe arm is connected with the annular base to serve as an inlet of a spray pipe, and the other end of the annular spray pipe arm serves as an outlet of the spray pipe; the telescopic arm mechanism can be extended and retracted along the axial direction of the annular base, so that the outlet of the spray pipe is formed into different steps, and the flow direction of gas at the outlet of the spray pipe is controlled.
Specifically, a plurality of telescopic arm mechanisms with the same structure are arranged in the circumferential direction to form a complete annular structure, so that an annular nozzle arm of the vectoring nozzle is formed.
One end of the annular spray pipe arm is connected with the annular base 1 to be used as an inlet of a spray pipe, and the other end of the annular spray pipe arm is used as an outlet of the spray pipe.
As shown in fig. 2, arrows show the directions of the inlet and outlet of the nozzle, wherein the inlet side of the nozzle is connected with the jet nozzle of the aircraft engine, as shown in fig. 3, the telescopic arm mechanism can be extended and retracted along the axial direction of the annular base, so as to adjust the wall length of the telescopic arm mechanism, and the outlet of the nozzle is formed into different steps, namely the section of the outlet of the nozzle is a slope with a section normal direction facing a certain direction, so as to control the flowing direction of the gas at the outlet of the nozzle.
As shown in fig. 1, the annular base is provided with a fixing hole 2 and an annular base hinge seat 9, and the annular base is connected with the tail end of the aircraft engine through the fixing hole 2; the annular base hinge seats 9 are equally spaced from the fixing holes 2.
The vectoring nozzle provided by the embodiment of the invention is characterized in that a plurality of telescopic arm mechanisms with the same structure are circumferentially arranged to form an annular nozzle arm, and the telescopic arm mechanisms can be axially telescopic along an annular base, so that the outlets of the nozzle are formed into different steps, the flow direction of gas at the outlet of the nozzle is controlled, the thrust direction is further changed, the vectoring control requirement of 360 degrees in all directions can be realized, the vectoring nozzle is simple in structure and easy to manufacture and produce, the complex control problem required by the rotation of the nozzle for controlling the direction of gas flow is solved, and the jet angle of the nozzle can be quickly, flexibly and reliably changed.
Preferably, as shown in fig. 1, the telescopic arm mechanism comprises a fixed wall 11, a moving wall 6, a pull rod 5 and a driving mechanism for driving the pull rod 5;
the fixed wall and the movable wall are in staggered butt joint; the pull rod is connected with the outer side of the movable wall; the driving mechanism is connected with the outer side of the fixed wall;
the pull rod and the driving mechanism are used for controlling the movable wall to slide along the fixed wall, so that the telescopic arm mechanism can axially extend and retract along the annular base.
Specifically, the pull rod 5 and a driving mechanism for driving the pull rod jointly form a transmission component for controlling the movable wall 6 to slide along the fixed wall 11 so as to enable the telescopic arm mechanism to axially extend and retract along the annular base 1; one end of the pull rod is in driving connection with a driving mechanism, the driving mechanism is arranged on the outer side of the fixed wall 11, the other end of the pull rod is connected with the outer side of the movable wall 6 and used for pulling the movable wall to slide along the fixed wall under the driving of the pull rod driving mechanism, and the reciprocating motion of the pull rod can be transmitted to the movable wall while the pull rod is fixed.
As shown in fig. 1, the annular base 1 is connected to a plurality of equally sized fixed walls 11.
The fixed wall and the movable wall are both arc-shaped wall surfaces, the fixed wall is an arc-shaped fixed spray pipe wall surface, and the movable wall is an arc-shaped movable spray pipe wall surface.
The fixed walls 11 of the telescopic arm mechanisms are the same in size, and the movable walls 6 are the same in size. The central angles corresponding to the widths of the fixed walls are equal, and the complete circular spray pipe section is formed in the circumferential direction of the spray pipe. Furthermore, the central angles corresponding to the widths of the moving walls are all equal and are arranged in the circumferential direction of the spray pipe in a one-to-one correspondence manner with the fixed walls to form an approximate circular spray pipe section.
It is understood that the central angle corresponding to the width of the fixed wall is approximately equal to the central angle corresponding to the width of the moving wall, with an error range of ± 0.1 °.
The pull rod of each telescopic arm mechanism can independently control each movable wall to slide along the fixed wall, namely, the pull rod can perform reciprocating transmission under the action of the driving mechanism, so that the telescopic arm mechanisms can axially extend and retract along the annular base 1.
Further, the pull rod can also be other transmission mechanisms.
Preferably, as shown in fig. 1, one end of the pull rod is hinged to the outer side of the moving wall through a first hinge seat 7, and the driving mechanism is hinged to the outer side of the fixed wall through a second hinge seat.
Specifically, one end of the pull rod is hinged to the outer side of the movable wall through a first hinge seat 7 arranged on the outer side of the movable wall, and the other end of the pull rod is in driving connection with the driving mechanism and is hinged to the outer side of the fixed wall through a second hinge seat arranged on the outer side of the fixed wall.
Adopt first hinge seat, second hinge seat to realize the swing joint of pull rod both ends respectively with removal wall and fixed wall, for with the both ends difference fixed connection of pull rod remove the wall and the fixed wall outside, can make the removal wall more smooth and easy and can prevent the card dead along the slip of fixed wall.
As shown in fig. 4, the fixed wall 11 is an arc hollow structure, a section of the movable wall 6 is simply supported in the hollow cavity inside the fixed wall 11, and the other end is hinged to the pull rod 5 through the first hinge seat 7 to ensure that the relative position of the movable wall 6 is fixed.
Further, the inner wall surface of the rear end of the fixed wall 11 is chamfered in order to smooth the airflow in the nozzle.
The fixed wall 11 is fixedly connected with the annular base 1, and the central position of the fixed wall 11 corresponds to the annular base hinge seat 9 on the annular base 1. The fixed wall 11 is arranged circumferentially, forms a nozzle outlet flow channel and simultaneously plays a role in supporting and limiting the movable wall 6.
Preferably, the wall surface length of the moving wall is 2 to 3 times the wall surface length of the fixed wall.
Preferably, the number of said mobile walls 6 is equal to the number of fixed walls 11.
Preferably, as shown in fig. 5, the wall width of the fixing wall 11 corresponds to a central angle θ of 5 to 10 °.
As shown in fig. 3, the moving walls move under the action of the pull rods, and the shape of the air outlet of the spray pipe is integrally changed, so that the airflow direction of the air outlet of the spray pipe is changed, the thrust direction is changed, and the vector propulsion function is realized.
Further, when the movable walls 6 contract at different progresses, the tail part of the spray pipe is in a directional step-shaped structure; the most constricted part of the movable wall 6 is the shortest wall surface at the outlet of the nozzle, so that the vector direction of the nozzle is changed, the air flow is bent in the direction of the shorter wall surface, and the thrust direction is changed.
Further, the moving direction of the moving wall is consistent with the jet direction of the jet pipe.
Furthermore, the number of the fixed walls, the movable walls and the transmission mechanisms is equal to that of the fixed holes on the annular base, and the fixed walls, the movable walls and the transmission mechanisms are circumferentially arranged to form an approximately circular spray pipe section.
Preferably, one end of the annular nozzle arm is welded to the annular base 1.
In particular, as shown in fig. 1, the annular nozzle arm comprises a fixed wall 11 and a mobile wall 6; wherein one end of the fixed wall 11 is welded to the annular base 1.
Preferably, the driving mechanism is a hydraulic driving mechanism, and the pull rod is in driving connection with a hydraulic driving system;
or the driving mechanism is a linear motor, and the pull rod is in driving connection with an output shaft of the linear motor;
or the driving mechanism is an air pressure driving mechanism, and the pull rod is in driving connection with the air pressure driving system.
It can be understood that the driving mechanism may be any one of the driving mechanisms in the prior art, as long as the pull rod can be driven to perform linear motion so as to realize axial extension and retraction of the telescopic arm mechanism along the annular base. For example: linear motors, pneumatic drive systems or hydraulic drive systems.
If the driving mechanism is a linear motor, the pull rod is in driving connection with an output shaft of the linear motor; if the driving mechanism is an air pressure driving mechanism, the pull rod is in driving connection with an air pressure driving system; and if the driving mechanism is a hydraulic driving mechanism, the pull rod is in driving connection with a hydraulic driving system.
Preferably, the hydraulic drive mechanism includes a hydraulic oil chamber 8 and a hydraulic oil passage 4.
Specifically, as shown in fig. 1, the driving mechanism is a hydraulic driving mechanism, and a hydraulic oil path 4 is disposed on the hydraulic oil chamber 8, so that oil filling and draining operations of the hydraulic oil chamber can be performed according to vector propulsion control requirements. The hydraulic driving mechanism is arranged on the outer side of the fixed wall 11 through an assembling hole in the outer side of the fixed wall 11, the hydraulic oil cavity 8 is in driving connection with one end of the pull rod 5, the pull rod pulls the movable wall to move through a hydraulic transmission system in the hydraulic oil cavity 8, namely, the stretching of the pull rod 5 is controlled, so that the movable wall 6 is pulled to slide along the fixed wall 11, and the telescopic arm mechanism stretches along the axial direction of the annular base.
The pull rod can reciprocate in the hydraulic oil cavity along the jet flow direction of the spray pipe under the control of the pressure in the hydraulic oil cavity, and the first hinge seat 7 fixed on the movable wall synchronously drives the movable wall to reciprocate so as to adjust the shape of the section of the outlet of the spray pipe.
It can be understood that the hydraulic transmission system can also be any one of the hydraulic transmission systems in the prior art, as long as the pull rod can be driven to do linear motion so as to realize that the telescopic arm mechanism extends and retracts along the axial direction of the annular base.
Preferably, the fixed wall 11 has a slot into which the movable wall 6 is inserted, the slot being a sliding rail of the movable wall.
Specifically, as shown in fig. 1 and 4, one end of the fixed wall 11 has a slot, the movable wall 6 is embedded into the slot of the fixed wall 11 and is connected to the fixed wall 11 in a staggered manner, and the slot is a sliding rail of the movable wall 6. That is, the movable wall 6 is disposed in the slot inside the fixed wall 11, and is limited by the slot, and slides along the fixed wall with the slot as a sliding rail.
Each pull rod 5 can independently control each moving wall 6 to slide in the clamping groove of each arc-shaped fixed spray pipe wall surface 6, each moving wall moves under the action of the pull rod, the cross section shape of the spray pipe is integrally changed, the outlet of the spray pipe is formed into different steps, and therefore the gas jet flow direction of the outlet of the spray pipe is controlled.
It can be understood that, because the fixed wall is an arc-shaped wall surface, the clamping groove of the fixed wall is an arc-shaped hollow structure, namely an arc-shaped hollow cavity, and one end of the movable wall moves in the arc-shaped hollow structure cavity of the fixed wall.
Preferably, the outside of said fixed wall is also connected to the annular base 1 by means of a first connecting rod 10.
Particularly, the fixed outer side is connected with the annular base through the first connecting rod, so that the stability of the fixed wall can be further improved, and the reliability of the whole structure is improved.
Preferably, one end of the first connecting rod is connected to a third hinge seat located outside the fixed wall, and the other end of the first connecting rod is connected to the annular base hinge seat 9.
Specifically, two ends of the first connection are movably connected with the annular base hinge seat arranged on the annular base through a third hinge seat arranged on the outer side of the fixed wall.
Preferably, a second connecting rod 3 is further disposed between the second hinge seat and the third hinge seat disposed outside the fixed wall, that is, one end of the second connecting rod 3 is connected to the third hinge seat disposed outside the fixed wall, and the other end of the second connecting rod 3 is connected to the second hinge seat disposed outside the fixed wall, so as to further improve the stability of the overall structure.
To further illustrate the beneficial effects of the present invention, the jet flow test is performed on the vectoring nozzle after the outlet cross section of the vectoring nozzle provided by the present invention is adjusted to be an inclined plane, as shown in fig. 6, when the outlet cross section of the nozzle is adjusted to be an inclined plane, the air expansion effect at different nozzle wall surfaces at the nozzle outlet is changed, and the beneficial effect of air deflection is generated.
An embodiment of the present invention provides a vectoring nozzle control method, applied to a vectoring nozzle according to any one of the above embodiments, including:
s1, determining a nozzle outlet target shape corresponding to the control instruction according to the vector propulsion control instruction;
s2, respectively calculating the movement stroke of each telescopic arm when the current shape of the spray pipe outlet is changed into the target shape based on the current telescopic amount of each telescopic arm;
and S3, controlling the expansion and contraction of each telescopic arm according to the movement stroke of each telescopic arm.
Preferably, when the driving mechanism is a hydraulic driving mechanism including a hydraulic oil chamber and a hydraulic oil path, the extension and retraction of each telescopic arm is respectively controlled according to the movement stroke of each telescopic arm, specifically:
when the telescopic arm needs to be shortened, calculating the liquid discharge amount of hydraulic oil in the hydraulic oil cavity according to the movement stroke of the telescopic arm, and discharging the hydraulic oil through a hydraulic oil path to drive the pull rod to be shortened;
when the telescopic arm needs to be extended, the liquid filling amount of hydraulic oil in the hydraulic oil cavity is calculated according to the movement stroke of the telescopic arm and is filled through the hydraulic oil circuit so as to drive the pull rod to extend.
Specifically, as shown in fig. 7, the flight control system determines a vector propulsion control command according to a vector propulsion control requirement, calculates a target cross-sectional shape of the outlet of the nozzle that is required to be formed by the composite vector propulsion, and further determines a new expansion amount of each moving wall according to the requirement of the target cross-sectional shape of the outlet of the nozzle by combining the current expansion amount fed back by each moving wall. When the movable wall needs to perform shortening movement, after the flight control system calculates the liquid discharge amount according to the movement stroke, the electromagnetic valve in the hydraulic oil cavity is controlled to enable the hydraulic oil cavity to discharge hydraulic oil with corresponding mass through the hydraulic oil way, the pull rod is guided to perform retraction movement, and then the movable wall moves towards the arc-shaped hollow cavity of the fixed wall. When the movable wall needs to perform extension movement, the flight control system calculates the liquid filling amount according to the movement stroke, then controls the electromagnetic valve in the hydraulic oil cavity to enable the hydraulic oil cavity to be filled with hydraulic oil with corresponding mass through the oil pressing path, guides the pull rod to perform extension movement, and further enables the movable wall to move towards the outflow direction of the spray pipe. Finally, according to the new position of each moving wall, an outlet section meeting the vector propulsion requirement is formed, and the vector regulation control process is finished.
It will be understood by those skilled in the art that the foregoing is only an exemplary embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, since various modifications, substitutions and improvements within the spirit and scope of the invention are possible and within the scope of the appended claims.
Claims (8)
1. A vectoring nozzle is characterized by comprising an annular base and a plurality of telescopic arm mechanisms with the same structure; the plurality of telescopic arm mechanisms are circumferentially arranged to form an annular spray pipe arm, one end of the annular spray pipe arm is connected with the annular base to serve as an inlet of a spray pipe, and the other end of the annular spray pipe arm serves as an outlet of the spray pipe; the telescopic arm mechanism can be stretched and retracted along the axial direction of the annular base, so that the outlet of the spray pipe is formed into different steps, and the flow direction of gas at the outlet of the spray pipe is controlled;
the telescopic arm mechanism comprises a fixed wall, a movable wall, a pull rod and a driving mechanism for driving the pull rod;
the fixed wall and the movable wall are butted; the pull rod is connected with the outer side of the movable wall; the driving mechanism is connected with the outer side of the fixed wall;
the pull rod and the driving mechanism are used for controlling the movable wall to slide along the fixed wall so as to enable the telescopic arm mechanism to axially extend and retract along the annular base;
the fixed wall is provided with a clamping groove, the movable wall is embedded into the clamping groove, and the clamping groove is a sliding track of the movable wall.
2. The vectoring nozzle of claim 1 wherein said drive mechanism is a hydraulic drive mechanism;
or, the driving mechanism is a linear motor;
or the driving mechanism is a pneumatic driving mechanism.
3. The vectoring nozzle of claim 2 wherein said hydraulic drive mechanism includes a hydraulic oil chamber and a hydraulic oil circuit.
4. The vectoring nozzle of any one of claims 1 to 3 wherein said drawbar is hingedly connected to the outside of the moving wall by a first hinge mount and said drive mechanism is hingedly connected to the outside of the fixed wall by a second hinge mount.
5. The vectoring nozzle of claim 4 wherein the exterior side of said fixed wall is further connected to the annular base by a first connecting rod.
6. The vectoring nozzle of claim 5 wherein one end of said first connecting rod is hinged to the outside of the fixed wall by a third hinge mount and the other end is hinged to the annular base by an annular base hinge mount;
the third hinge seat is further hinged to one end of the second connecting rod, and the second hinge seat is further hinged to the other end of the second connecting rod.
7. The vectoring nozzle of claim 2 wherein said wall width of said stationary wall corresponds to a central angle of 5-10 °; the wall surface length of the movable wall is 2-3 times of the wall surface length of the fixed wall.
8. A vectoring nozzle control method applied to a vectoring nozzle as claimed in any one of claims 1 to 7, comprising:
s1, determining a nozzle outlet target shape corresponding to the control instruction according to the vector propulsion control instruction;
s2, respectively calculating the movement stroke of each telescopic arm when the current shape of the spray pipe outlet is changed into the target shape based on the current telescopic amount of each telescopic arm;
and S3, controlling the expansion and contraction of each telescopic arm according to the movement stroke of each telescopic arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110645052.4A CN113250853B (en) | 2021-06-10 | 2021-06-10 | Vectoring nozzle and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110645052.4A CN113250853B (en) | 2021-06-10 | 2021-06-10 | Vectoring nozzle and control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113250853A CN113250853A (en) | 2021-08-13 |
| CN113250853B true CN113250853B (en) | 2022-06-14 |
Family
ID=77187256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110645052.4A Active CN113250853B (en) | 2021-06-10 | 2021-06-10 | Vectoring nozzle and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113250853B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3138921A (en) * | 1962-04-26 | 1964-06-30 | Gen Electric | Variable area nozzle |
| CN1277657A (en) * | 1998-07-22 | 2000-12-20 | 通用电气公司 | Vectoring nozzle control system |
| US6415599B1 (en) * | 2001-05-11 | 2002-07-09 | General Electric Company | Engine interface for axisymmetric vectoring nozzle |
| CN103423026A (en) * | 2013-08-09 | 2013-12-04 | 中国航空工业集团公司沈阳发动机设计研究所 | Vector cascade mechanism capable of enhancing stealth of S-shaped bent two-dimensional nozzle |
| CN106593696A (en) * | 2016-12-21 | 2017-04-26 | 南京航空航天大学 | Symmetrical and asymmetrical exhausting system capable of improving afterbody flow field, and method thereof |
| CN109723568A (en) * | 2018-12-29 | 2019-05-07 | 南京航空航天大学 | Change the nozzle structure of nozzle exit area by sliding type |
| CN111535937A (en) * | 2020-05-29 | 2020-08-14 | 山东理工大学 | Aviation three-dimensional vector engine tail nozzle |
| CN211287918U (en) * | 2019-12-11 | 2020-08-18 | 中国人民解放军总参谋部第六十研究所 | Linear regulation convergent engine tail nozzle |
| CN111622861A (en) * | 2020-06-19 | 2020-09-04 | 中国人民解放军总参谋部第六十研究所 | Engine tail nozzle adjusting method and device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9261046B2 (en) * | 2013-01-21 | 2016-02-16 | Lockheed Martin Corporation | Gas turbine exhaust noise reduction |
-
2021
- 2021-06-10 CN CN202110645052.4A patent/CN113250853B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3138921A (en) * | 1962-04-26 | 1964-06-30 | Gen Electric | Variable area nozzle |
| CN1277657A (en) * | 1998-07-22 | 2000-12-20 | 通用电气公司 | Vectoring nozzle control system |
| US6415599B1 (en) * | 2001-05-11 | 2002-07-09 | General Electric Company | Engine interface for axisymmetric vectoring nozzle |
| CN103423026A (en) * | 2013-08-09 | 2013-12-04 | 中国航空工业集团公司沈阳发动机设计研究所 | Vector cascade mechanism capable of enhancing stealth of S-shaped bent two-dimensional nozzle |
| CN106593696A (en) * | 2016-12-21 | 2017-04-26 | 南京航空航天大学 | Symmetrical and asymmetrical exhausting system capable of improving afterbody flow field, and method thereof |
| CN109723568A (en) * | 2018-12-29 | 2019-05-07 | 南京航空航天大学 | Change the nozzle structure of nozzle exit area by sliding type |
| CN211287918U (en) * | 2019-12-11 | 2020-08-18 | 中国人民解放军总参谋部第六十研究所 | Linear regulation convergent engine tail nozzle |
| CN111535937A (en) * | 2020-05-29 | 2020-08-14 | 山东理工大学 | Aviation three-dimensional vector engine tail nozzle |
| CN111622861A (en) * | 2020-06-19 | 2020-09-04 | 中国人民解放军总参谋部第六十研究所 | Engine tail nozzle adjusting method and device |
Non-Patent Citations (1)
| Title |
|---|
| 《轴对称矢量喷管A8面运动学分析与求解》;刘铭达 等;《机械科学与技术》;20160630;第35卷(第6期);第975-979页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113250853A (en) | 2021-08-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2050948B1 (en) | A gas turbine engine assembly with a variable area nozzle and a method of controlling this nozzle | |
| US8943794B2 (en) | Linear telescopic actuator for moving a first and a second element relative to a stationary element | |
| US11149637B2 (en) | Nacelle for a turbofan engine | |
| CN101939528B (en) | Variable area fan nozzle with bypass flow | |
| CA2760086C (en) | System and method for operating a thrust reverser for a turbofan propulsion system | |
| EP3244051A1 (en) | Gas turbine engine with thrust reverser assembly and method of operating | |
| EP3023623B1 (en) | Gas turbine engine with thrust reversal and method of assembling the same | |
| EP3228853A1 (en) | Thrust reverser actuator | |
| JPH0536630B2 (en) | ||
| US6145301A (en) | Thrust reverser for fan type turbojet engines using independently actuated pivoted thrust deflectors | |
| CN105264212A (en) | Dual-mode plug nozzle | |
| EP2578490B1 (en) | A propulsion unit for an aircraft | |
| CN113250853B (en) | Vectoring nozzle and control method thereof | |
| EP2987991B1 (en) | Fan nozzle with thrust reversing and variable area function | |
| JPH1081300A (en) | Thrust reversing device of turbojet engine with gate connected to upstream side panel | |
| CN111379645B (en) | Double-throat spray pipe capable of changing throat area and outlet area and method thereof | |
| US10161356B2 (en) | Integrated thrust reverser actuation system | |
| US9062612B2 (en) | Actuation system for a propulsive unit of an airplane | |
| US10774786B2 (en) | System for actuating a panel of a turbojet engine nacelle | |
| US5934564A (en) | Variable geometry turbojet engine exhaust nozzle | |
| US11187186B2 (en) | Exhaust nozzle of a gas turbine engine | |
| US20230258147A1 (en) | Thrust reverser having three gates | |
| CN111806672B (en) | Propulsion system for aircraft | |
| CN114981162A (en) | Assembly for a turbomachine | |
| US20160131080A1 (en) | Propulsion unit for an aircraft |
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 |