CN116104661B - Depth-adjustable lobe spray pipe structure and adjusting method - Google Patents
Depth-adjustable lobe spray pipe structure and adjusting method Download PDFInfo
- Publication number
- CN116104661B CN116104661B CN202310259485.5A CN202310259485A CN116104661B CN 116104661 B CN116104661 B CN 116104661B CN 202310259485 A CN202310259485 A CN 202310259485A CN 116104661 B CN116104661 B CN 116104661B
- Authority
- CN
- China
- Prior art keywords
- adjusting
- adjusting plate
- rod
- wave
- plates
- 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
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
- F02K1/06—Varying effective area of jet pipe or nozzle
- F02K1/12—Varying effective area of jet pipe or nozzle by means of pivoted flaps
-
- 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
- F02K1/06—Varying effective area of jet pipe or nozzle
- F02K1/15—Control or regulation
-
- 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
- F02K1/28—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto using fluid jets to influence the jet flow
- F02K1/30—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto using fluid jets to influence the jet flow for varying effective area of jet pipe or nozzle
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/10—Drag reduction
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Special Spraying Apparatus (AREA)
Abstract
The invention belongs to the technical field of engine lobe spray pipes, and particularly relates to a depth-adjustable shallow lobe spray pipe structure and an adjusting method, wherein the depth-adjustable shallow lobe spray pipe structure comprises an aircraft rear body, an injection sleeve, a main flow sleeve, a power assembly, a driving ring, a deep wave trough wall, an adjusting plate assembly and a connecting rod assembly, wherein the deep wave trough wall and the adjusting plate assembly are arranged at the rear side of the main flow sleeve, and the deep wave trough wall is a fixed wall and is fixed with the rear end of the main flow sleeve; the adjusting plate is connected with the supporting plate on the main flow sleeve through a pin roll through the supporting lugs on the adjusting plate; the outlet area of the general main spray pipe with the lobe is not adjustable, and the main spray pipe with the deep and shallow lobe designed by the invention realizes the adjustment of the outlet area of the main spray pipe with the lobe, thereby ensuring the meeting of the area of the main spray pipe under different flying speeds under each working condition.
Description
Technical Field
The invention belongs to the technical field of engine lobe spray pipes, and particularly relates to a depth-adjustable and shallow lobe spray pipe structure and an adjusting method.
Background
During the mission of the fighter plane, the relatively high temperature exhaust system cavity and the tail jet are the primary sources of infrared radiation, which results in the fighter plane being the target of detection and attack of the infrared guided weapon. At present, the inhibition of cavity infrared radiation can be realized by a shielding technology, cooling air flow, a stealth coating and other ways, and the inhibition of tail jet infrared radiation is difficult, and researches show that the jet nozzle can enhance the mixing of hot jet and jet air flow, so that the infrared radiation characteristic of the tail jet can be reduced.
In the jet nozzle, compared with a conventional axisymmetric main nozzle, the jet-mixing speed is higher, the temperature of the tail jet flow at the outlet after mixing is lower, and the infrared radiation of the tail jet flow can be further reduced.
In the research of the lobe injection main spray pipe, the deep and shallow lobe main spray pipe is further widely used as an injection main spray pipe structure, and the deep and shallow lobe can realize the blending effect of the outflow and the deeper inflow relative to the common lobe.
However, the wall surface of the main spray pipe with deep and shallow lobes is mostly composed of fixed walls, the area of the outlet of the spray pipe is not adjustable, the engine is not easy to have good working performance in a very wide speed range, expansion of high-temperature and high-pressure fuel gas is difficult to fully realize, the thrust of the engine is damaged, and the efficiency of the spray pipe is reduced.
In addition, when the adjustable is considered, the arc length of the tail end part of the deep trough is smaller, the adjusting quantity is not large, and the adjusting quantity is not suitable for adjusting, so that the problem that how to realize the adjustable outlet area of the main spray pipe with the deep and shallow lobes is considered is solved.
The invention designs a depth-adjustable lobe spray pipe structure and an adjusting method thereof to solve the problems.
Disclosure of Invention
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides an adjustable depth lobe spray tube structure, it includes aircraft rear body, injection sleeve, mainstream sleeve, regulating plate subassembly, power pack, deep wave valley wall, and wherein the regulating plate subassembly and the deep wave valley wall of multiunit circumference alternating distribution are installed to the rear side of mainstream sleeve; the adjusting plate component and the deep trough wall form a main spray pipe with a deep and shallow lobe; the deep wave valley wall is a fixed wall and is fixed with the rear end of the main flow sleeve; each group of adjusting plate assemblies consists of two wave crest adjusting plates and one shallow wave trough adjusting plate, each wave crest adjusting plate consists of two first adjusting plates which are mutually overlapped in the circumferential direction, and each shallow wave trough adjusting plate consists of two second adjusting plates which are mutually overlapped in the circumferential direction; the adjusting plate is arranged on the main flow sleeve in a swinging way; the adjacent second adjusting plates are connected with the first adjusting plates through pin shafts. Two sides of the deep trough wall are adjacent to the two crest adjusting plates.
And the injection sleeve is provided with a plurality of power components which are uniformly distributed in the circumferential direction and can control the adjusting plate to swing around the pin shaft of the adjusting plate.
As the preferable scheme, the rear end of mainstream sleeve fixed mounting has circumference evenly distributed's backup pad, has the journal stirrup on the regulating plate, and the backup pad on regulating plate and the mainstream sleeve through the journal stirrup on it is connected through the round pin axle.
As a preferable scheme, the first adjusting plate is divided into a first radial adjusting plate and a first circumferential adjusting plate, and the second adjusting plate is divided into a second radial adjusting plate and a second circumferential adjusting plate; two first circumferential adjusting plates of the two first adjusting plates constituting the wave crest are overlapped with each other; two second circumferential adjusting plates of the two second adjusting plates forming the shallow trough are overlapped with each other; two second radial regulating plates in the two second regulating plates forming the shallow wave trough correspond to two first radial regulating plates in the two first regulating plates forming the wave crest one by one and are mutually overlapped; the deep wave valley wall and the first radial regulating plate at the corresponding side of the adjacent wave peak are mutually overlapped.
As a preferable scheme, the second radial adjusting plates in the shallow wave troughs are parallel to the first radial adjusting plates in the adjacent wave crests and share pin shafts; the two sides of the deep wave valley wall and the first radial adjusting plates in the adjacent wave peaks are parallel to each other, and the wall surfaces of the deep wave valley wall matched with the pin shafts of the first radial adjusting plates on the same side are vertical. The first radial regulating plates on the two sides of the deep wave valley wall and in the adjacent wave crest of the swing are always parallel to each other.
As a preferable scheme, the matching surface of the second radial regulating plate in the shallow wave trough and the first radial regulating plate in the adjacent wave crest is flat and seamless; the matching surfaces of the two sides of the deep wave valley wall and the first radial adjusting plates in the adjacent wave peaks are flat and seamless.
As a preferable scheme, the arc matching surfaces of two first circumferential adjusting plates in the two first adjusting plates forming the wave crest have the same radius and always keep overlapping and no gap when rotating around the respective pin shafts; the arc matching surfaces of two second circumferential adjusting plates in the two second adjusting plates forming the shallow trough have equal radiuses, and the two second circumferential adjusting plates always keep overlapping and have no gap when rotating around the respective pin shafts.
As a preferable scheme, a plurality of guide sliding grooves are uniformly formed in the circumferential direction on the wall surface of the front end of the injection sleeve; the plurality of power components are circumferentially and uniformly fixedly arranged on the outer wall surface of the front end of the injection sleeve, the power components are of telescopic structures, a connecting rod is fixedly arranged at the output end of each power component, two transmission rings are slidably arranged on the inner wall surface of the injection sleeve, a plurality of connection lugs which are circumferentially and uniformly distributed are fixedly arranged at the front end of each transmission ring, the connection lugs arranged on the two transmission rings are in one-to-one correspondence with the connecting rods arranged on the power components and are mutually hinged, and the connecting rods penetrate through guide sliding grooves formed in the injection sleeve; the second adjusting plate is connected with the front transmission ring of the two transmission rings through the connecting rod assembly, and the first adjusting plate is connected with the rear transmission ring of the two transmission rings through the connecting rod assembly.
As a preferable scheme, the connecting rod assembly comprises a fixed support lug, a first transmission rod, a first installation swing rod, a second transmission rod, a second installation swing rod and a third transmission rod, wherein the fixed support lug is fixedly installed on the adjusting plate, the first installation swing rod and the second installation swing rod are installed on the outer wall surface of the main flow sleeve in a swinging way, one end of the third transmission rod is installed on a corresponding transmission ring in a hinging way, and the other end of the third transmission rod is connected with the upper end of the second installation swing rod in a hinging way; one end of the second transmission rod is connected with the upper end of the second installation swing rod in a hinged mode, the other end of the second transmission rod is connected with the upper end of the first installation swing rod in a hinged mode, one end of the first transmission rod is connected with a fixed support lug arranged on the corresponding adjusting plate in a hinged mode, and the other end of the first transmission rod is connected with the upper end of the first installation swing rod in a hinged mode; the distance between the hinge points of the first installation swing rod and the second installation swing rod on the main flow sleeve is equal to the length of the second transmission rod.
When the engine is in a certain state and the lobe main spray pipe at the rear end of the main flow sleeve is regulated, the power assembly is controlled to work on the premise of ensuring the unchanged area according to the known area of the outlet of the lobe main spray pipe in the state, and the corresponding transmission ring is driven to slide by the connecting rod when the power assembly is prolonged or shortened; the transmission ring slides and can drive the third transfer line to swing, and the third transfer line swings and drives the second installation pendulum rod to swing, and the second installation pendulum rod swings and drives the second transfer line to swing, and the second transfer line swings and drives the first installation pendulum rod to swing, and the first installation pendulum rod swings and drives the first transfer line to swing, and the first transfer line swings and drives corresponding regulating plate to swing around the relative mainstream sleeve of respective round pin axle through fixed journal stirrup, realizes the regulation of crest and shallow trough and satisfies that trailing edge department area between each group lobe is the same each other when adjusting.
Compared with the prior art, the invention has the advantages that:
1. the side wall matching surfaces between the second adjusting plate and the first adjusting plate and between the first adjusting plate and the adjacent deep trough walls are flat and seamless; the arc matching surfaces of the adjacent and overlapped second adjusting plates and the first adjusting plates have the same radius, and always keep overlapping and no gap when rotating around the respective pin shafts; the design can ensure that the flow channel has better tightness in the process of controlling the swing of the adjusting plate to adjust the outlet area of the main spray pipe of the lobe and after the adjustment is finished.
2. The adjusting device designed by the invention is completely isolated from air flow because the power component is positioned at the outer side of the injection sleeve; the connecting rod assembly and the transmission ring are positioned on the inner side of the injection sleeve and are completely isolated from high-temperature fuel gas; the power assembly, the connecting rod assembly and the transmission ring are relatively less affected by air flow and high-temperature fuel gas, and the reliability of the adjusting device is relatively high.
3. The outlet area of the general main spray pipe with the lobes is not adjustable, the main spray pipe with the deep and shallow lobes designed by the invention realizes the adjustment of the outlet area of the lobes, and the adjusted outlet area of the lobes meets the requirements of the outlet area of the main spray pipe under different flying speeds under various working conditions and does not influence the flying under various working conditions.
Drawings
Fig. 1 is a schematic structural view of the integral component.
FIG. 2 is a schematic distribution diagram of a power assembly, drive ring and connecting rod assembly.
FIG. 3 is a schematic diagram of the distribution of the deep and shallow valleys.
FIG. 4 is a schematic diagram of a power assembly installation.
Fig. 5 is a schematic structural view of the ejector sleeve.
FIG. 6 is a schematic illustration of the connection of the power assembly and the drive ring.
Fig. 7 is a schematic illustration of the connection of the linkage assembly and the adjustment plate.
Fig. 8 is a schematic diagram of the connection of the drive ring and the adjustment plate.
FIG. 9 is a schematic illustration of the mating of the deep and shallow valleys.
Fig. 10 is a schematic structural view of the connecting rod assembly.
Fig. 11 is a schematic structural view of the deep wave trough wall and the regulating plate.
Fig. 12 is a schematic diagram of the geometric parameters used for the main nozzle of the deep and shallow lobes.
FIG. 13 is a schematic diagram of the geometric parameters used for the axisymmetric main nozzle.
Reference numerals in the figures: 1. an aircraft aft-body; 2. an injection sleeve; 3. a main flow sleeve; 4. a power assembly; 5. a drive ring; 6. an adjustment plate assembly; 7. a connecting rod assembly; 8. deep wave valley walls; 9. shallow wave troughs; 10. a guide chute; 11. connecting the lugs; 12. a connecting rod; 13. a first adjustment plate; 14. a second adjusting plate; 15. fixing the support lugs; 16. a first transmission rod; 17. a first installation swing rod; 18. a second transmission rod; 19. a second installation swing rod; 20. a third transmission rod; 21. a first circumferential adjustment plate; 22. a first radial adjustment plate; 23. a second circumferential adjustment plate; 24. and a second radial adjustment plate.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples or figures are illustrative of the invention and are not intended to limit the scope of the invention.
The utility model provides an adjustable depth lobe spray tube structure, as shown in fig. 1, 2, it includes aircraft rear body 1, draws injection sleeve 2, mainstream sleeve 3, power pack 4, drive ring 5, regulating plate subassembly 6, link assembly 7, dark trough wall 8, wherein as shown in fig. 7, the rear end fixed mounting of mainstream sleeve 3 has the backup pad of circumference evenly distributed, as shown in fig. 2, the rear side of mainstream sleeve 3 installs multiunit circumference alternately distributed regulating plate subassembly 6 and dark trough wall 8; the adjusting plate assembly 6 and the deep trough wall form a main spray pipe structure with a lobe, and as shown in fig. 3, the adjusting plate assembly 6 and the deep trough wall 8 form a deep and shallow lobe; the deep wave valley wall 8 is a fixed wall and is fixed with the rear end of the main flow sleeve 3; as shown in fig. 9 and 11, each group of adjusting plate assemblies 6 consists of two peak adjusting plates and one shallow trough 9 adjusting plate, the peak adjusting plates consist of two first adjusting plates 13 which are circumferentially overlapped with each other, and the shallow trough 9 adjusting plates consist of two second adjusting plates 14 which are circumferentially overlapped with each other; the adjusting plate is provided with a supporting lug, and the adjusting plate is connected with a supporting plate on the main flow sleeve 3 through a pin shaft by the supporting lug on the adjusting plate; the second adjusting plate 14 is connected with the first adjusting plate 13 through a pin shaft; the first adjusting plate 13 is divided into a first radial adjusting plate 22 and a first circumferential adjusting plate 21, and the second adjusting plate 14 is divided into a second radial adjusting plate 24 and a second circumferential adjusting plate 23; the two first circumferential adjustment plates 21 of the two first adjustment plates 13 constituting the peaks overlap each other; two second circumferential adjustment plates 23 of the two second adjustment plates 14 constituting the shallow wave trough 9 overlap each other; two second radial adjusting plates 24 in the two second adjusting plates 14 forming the shallow wave trough 9 are in one-to-one correspondence with and mutually overlapped with two first radial adjusting plates 22 in the two first adjusting plates 13 forming the wave crest; the deep wave valley walls 8 are overlapped with the first radial regulating plates 22 on the corresponding sides of the adjacent wave peaks; the second radial regulating plates 24 in the shallow wave troughs 9 are parallel to the first radial regulating plates 22 in the adjacent wave crests and share pin shafts; the two sides of the deep wave valley wall 8 and the first radial regulating plates 22 in the adjacent wave crests are parallel to each other; the matching surface of the second radial regulating plate 24 in the shallow wave trough 9 and the first radial regulating plate 22 in the adjacent wave crest is flat and seamless; the matching surfaces of the two sides of the deep wave valley wall 8 and the first radial adjusting plates 22 in the adjacent wave peaks are flat and seamless; the arc matching surfaces of the two first circumferential adjusting plates 21 in the two first adjusting plates 13 forming the wave crest have the same radius and always keep overlapping and no gap when rotating around the respective pin shafts; the circular arc matching surfaces of the two second circumferential adjusting plates 23 in the two second adjusting plates 14 forming the shallow trough 9 have equal radiuses, and always keep overlapping and seamless when rotating around the respective pin shafts.
In the invention, because the rotating shafts of the two wave crest adjusting plates in the same wave crest and the two wave trough adjusting plates in the same wave trough are not collinear, the circumferential adjusting plates cannot be completely overlapped in the swinging process, and interference force exists; the circumferential adjustment is deformed in the swinging process, but partial overlapping is always kept, and the overlapping part is seamless, so that the air tightness and the feasibility of movement are ensured.
As shown in fig. 5, a plurality of guiding sliding grooves 10 are uniformly formed in the circumferential direction on the wall surface of the front end of the injection sleeve 2; as shown in fig. 2 and 4, a plurality of power components 4 are uniformly and fixedly arranged on the outer wall surface of the front end of the injection sleeve 2 in the circumferential direction, and the power components 4 are of telescopic structures and can be lengthened or shortened during working; as shown in fig. 6, a connecting rod 12 is fixedly installed at the output end of each power assembly 4, as shown in fig. 1, 6, 7 and 8, two transmission rings 5 are slidably installed on the inner wall surface of the injection sleeve 2, a plurality of connecting lugs 11 which are uniformly distributed in the circumferential direction are fixedly installed at the front end of each transmission ring 5, the connecting lugs 11 installed on the two transmission rings 5 are in one-to-one correspondence with the connecting rods 12 installed on the power assemblies 4 and are mutually hinged, and the connecting rods 12 penetrate through guide sliding grooves 10 formed in the injection sleeve 2; as shown in fig. 8, the second adjusting plate 14 is connected to the front one 5 of the two drive rings 5 via the connecting rod assembly 7, and the first adjusting plate 13 is connected to the rear one 5 of the two drive rings 5 via the connecting rod assembly 7.
The power component 4 is of a telescopic structure, and can be lengthened or shortened during working; when the power assembly 4 is lengthened or shortened, the corresponding transmission ring 5 is driven to slide by the connecting rod 12.
The two first circumferential adjustment plates 21 of the two first adjustment plates 13 constituting the peaks in the present invention overlap each other; two second circumferential adjustment plates 23 of the two second adjustment plates 14 constituting the shallow wave trough 9 overlap each other; two second radial adjusting plates 24 in the two second adjusting plates 14 forming the shallow wave trough 9 are in one-to-one correspondence with and mutually overlapped with two first radial adjusting plates 22 in the two first adjusting plates 13 forming the wave crest; the deep wave valley walls 8 are overlapped with the first radial regulating plates 22 on the corresponding sides of the adjacent wave peaks; the second radial regulating plates 24 in the shallow wave troughs 9 are parallel to the first radial regulating plates 22 in the adjacent wave crests and share pin shafts; the two sides of the deep wave valley wall 8 and the first radial regulating plates 22 in the adjacent wave crests are parallel to each other; the matching surface of the second radial regulating plate 24 in the shallow wave trough 9 and the first radial regulating plate 22 in the adjacent wave crest is flat and seamless; the matching surfaces of the two sides of the deep wave valley wall 8 and the first radial adjusting plates 22 in the adjacent wave peaks are flat and seamless; the arc matching surfaces of the two first circumferential adjusting plates 21 in the two first adjusting plates 13 forming the wave crest have the same radius and always keep overlapping and no gap when rotating around the respective pin shafts; the arc matching surfaces of two second circumferential adjusting plates 23 in the two second adjusting plates 14 forming the shallow trough 9 have equal radiuses and always keep overlapping and no gap when rotating around the respective pin shafts; the design can ensure that the flow channel has better tightness in the process of controlling the swing of the adjusting plate to adjust the outlet area of the main spray pipe of the lobe and after the adjustment is finished.
The gap formed in the swinging process of the adjusting plate and the main flow sleeve is relatively smaller, and the size of the gap can be reasonably controlled during installation, so that the gap is as small as possible, the flowing of air flow in the whole movement interval is ensured to have better tightness, and a large amount of hot air in the main flow channel cannot enter the secondary flow channel.
As shown in fig. 10, the connecting rod assembly 7 includes a fixed support lug 15, a first transmission rod 16, a first installation swing rod 17, a second transmission rod 18, a second installation swing rod 19, and a third transmission rod 20, wherein the fixed support lug 15 is fixedly installed on the adjusting plate, the first installation swing rod 17 and the second installation swing rod 19 are installed on the outer wall surface of the main flow sleeve 3 in a swinging manner, one end of the third transmission rod 20 is installed on the corresponding transmission ring 5 in a hinging manner, and the other end of the third transmission rod 20 is connected with the upper end of the second installation swing rod 19 in a hinging manner; one end of the second transmission rod 18 is connected with the upper end of the second installation swing rod 19 in a hinged manner, the other end of the second transmission rod 18 is connected with the upper end of the first installation swing rod 17 in a hinged manner, one end of the first transmission rod 16 is connected with the fixed support lugs 15 arranged on the corresponding adjusting plate in a hinged manner, and the other end of the first transmission rod 16 is connected with the upper end of the first installation swing rod 17 in a hinged manner; the distance between the hinge points of the first installation swing rod 17 and the second installation swing rod 19 on the main flow sleeve 3 is equal to the length of the second transmission rod 18.
The adjusting device designed by the invention is completely isolated from air flow because the power component 4 is positioned at the outer side of the injection sleeve 2; the connecting rod assembly 7 and the driving ring 5 are positioned at the inner side of the injection sleeve 2 and are completely isolated from high-temperature fuel gas; the power assembly 4, the connecting rod assembly 7 and the transmission ring 5 are relatively less affected by air flow and high-temperature fuel gas, and the reliability of the adjusting device is relatively high.
The outlet area of the general main lobe jet pipe is not adjustable, the outlet area of the main lobe jet pipe is adjustable, the outlet area of the main lobe jet pipe after adjustment is equal to the outlet area of the main axisymmetric jet pipe before modification under different flying speeds of each working condition, the flying under each working condition is not influenced, and the modification requirement of the current jet pipe is ensured.
Fig. 12 (a) is a schematic view of geometrical parameters of a main nozzle and a main sleeve of a lobe, and (b) is a schematic view of cross-sectional parameters of a trailing edge of the lobe; the geometric parameters comprise the length L of the main spray pipe of the lobe and the radius R of the inlet section of the lobe 0 Radius R at deep trough of lobe trailing edge 1 Radius R at the shallow trough 9 of the trailing edge of the lobe 2 Radius R at the peak of the trailing edge of the lobe 3 Lobe trailing edge trough circumferential angle α, lobe trailing edge peak circumferential angle β, lobe period number N (or fan angle 2θ=360°/N including two complete peaks, one complete deep trough and one complete shallow trough 9).
Fig. 13 (a) is a schematic diagram of geometrical parameters of the main flow sleeve and the axisymmetric main nozzle, and (b) is a schematic diagram of cross-sectional parameters of the main nozzle with a circumferential angle of 2θ at the trailing edge. The geometric parameters comprise the axisymmetric main spray pipe length L and the spray pipe inlet section radius R 0 Radius R at the trailing edge of the nozzle p 。
When the axisymmetric main spray pipe is adjusted after being remodeled to the deep and shallow lobe main spray pipe, the area of the outlet of the lobe convergence section under different working conditions and the area of the outlet of the axisymmetric main spray pipe before remodelling are equal, namely the requirement of the full mission section engine on the area of the main spray pipe is met.
When the axisymmetric main spray pipe is adjusted after the lobe main spray pipe is remodeled, the trailing edge parameter selection of the deep and shallow lobe main spray pipe follows the following formula:
when the flight states are different, the main jet pipe with the deep and shallow lobes of the main flow sleeve 3 can be adjusted, the outlet area of the main jet pipe with the deep and shallow lobes is changed, and the main flow is ensured to reach Mach 1 at the tail edge of the deep and shallow lobes; the injection sleeve contraction and expansion section can also be adjusted along with the adjustment of the depth lobe, so that the throat area of the rear section of the injection sleeve is changed, the secondary flow channel area is adjusted, the secondary flow velocity is changed, the good mixing of the main flow and the secondary flow is realized, the outlet area of the injection sleeve is changed, and the main flow and the secondary flow are fully expanded at the outlet of the injection sleeve after being mixed; aiming at different flight states, the areas of the main jet pipe outlet of the main flow deep and shallow lobe and the throat of the injection sleeve can be determined according to the flight states, and the movement positions of the wave crest and the shallow wave trough 9 can be adjusted under the condition that the area of the main jet pipe outlet of the deep and shallow lobe is fixed, so that better mixing effect and lower aerodynamic loss are achieved; the two points can be combined to determine the specific movement position of the lobe when specifically adjusting the main nozzle of the lobe.
The deep wave trough wall 8 is fixedly arranged on the main flow sleeve 3, so the design is because the trough arc length of the deep wave trough is smaller and no adjusting space exists; in addition, the design can simplify the number of adjusting plates.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent variation, etc. of the above embodiment according to the technical matter of the present invention fall within the scope of the present invention.
Embodiments are described below: when the regulating device for the deep and shallow lobe main spray pipe is used, under different flight states, the outlet area of the lobe main spray pipe, the throat and the outlet area of the injection sleeve are known, when the lobe main spray pipe is regulated, when an engine is in a certain state, the power assembly 4 is controlled to work according to the known area of the outlet of the main spray pipe under the certain state, and when the power assembly 4 is lengthened or shortened, the corresponding transmission ring 5 is driven to slide through the connecting rod 12; the driving ring 5 slides to drive the third driving rod 20 to swing, the third driving rod 20 swings to drive the second installation swing rod 19 to swing, the second installation swing rod 19 swings to drive the second driving rod 18 to swing, the second driving rod 18 swings to drive the first installation swing rod 17 to swing, the first installation swing rod 17 swings to drive the first driving rod 16 to swing, the first driving rod 16 swings to drive the corresponding adjusting plate to swing around the corresponding pin shaft relative to the main flow sleeve 3 through the fixed supporting lugs 15, the adjustment of wave crests and shallow wave troughs 9 is realized, the area of trailing edge positions among all groups of lobes is required to be mutually identical when the adjustment is realized, namely the area of the trailing edge positions of one group of lobes is identical to the area of the same fan-shaped angle of the axisymmetric main spray pipe with the same area, so that the circumferential situation area is identical under the condition that the integral area is ensured to meet the requirement, and the uniformity of axial airflow distribution is ensured.
Claims (4)
1. The utility model provides an adjustable depth lobe spray tube structure, includes aircraft rear body, draws ejector sleeve, mainstream sleeve, its characterized in that: the device also comprises an adjusting plate assembly, a power assembly and deep wave valley walls, wherein the rear side of the main flow sleeve is provided with a plurality of groups of adjusting plate assemblies and deep wave valley walls which are circumferentially and alternately distributed; the adjusting plate component and the deep trough wall form a main spray pipe with a deep and shallow lobe; the deep wave valley wall is a fixed wall and is fixed with the rear end of the main flow sleeve; each group of adjusting plate assemblies consists of two wave crest adjusting plates and one shallow wave trough adjusting plate, each wave crest adjusting plate consists of two first adjusting plates which are mutually overlapped in the circumferential direction, and each shallow wave trough adjusting plate consists of two second adjusting plates which are mutually overlapped in the circumferential direction; the adjusting plate is arranged on the main flow sleeve in a swinging way; the adjacent second adjusting plates are connected with the first adjusting plates through pin shafts; two sides of the deep trough wall are adjacent to the two crest adjusting plates;
a plurality of power components which are uniformly distributed in the circumferential direction and can control the adjusting plate to swing around the pin shaft of the adjusting plate are arranged on the injection sleeve;
the back end of the main flow sleeve is fixedly provided with a supporting plate which is circumferentially and uniformly distributed, the adjusting plate is provided with supporting lugs, and the adjusting plate is connected with the supporting plate on the main flow sleeve through the supporting lugs on the adjusting plate and the supporting plate on the main flow sleeve through pin shafts;
the first adjusting plate is divided into a first radial adjusting plate and a first circumferential adjusting plate, and the second adjusting plate is divided into a second radial adjusting plate and a second circumferential adjusting plate; two first circumferential adjusting plates of the two first adjusting plates constituting the wave crest are overlapped with each other; two second circumferential adjusting plates of the two second adjusting plates forming the shallow trough are overlapped with each other; two second radial regulating plates in the two second regulating plates forming the shallow wave trough correspond to two first radial regulating plates in the two first regulating plates forming the wave crest one by one and are mutually overlapped; the deep wave valley wall is overlapped with the first radial regulating plate at the corresponding side of the adjacent wave peak;
the second radial adjusting plates in the shallow wave troughs are parallel to the first radial adjusting plates in the adjacent wave crests and share pin shafts; the two sides of the deep wave valley wall and the first radial adjusting plates in the adjacent wave peaks are parallel to each other, and the pin shafts of the first radial adjusting plates are vertical to the wall surface of the deep wave valley wall matched with the same side;
the matching surface of the second radial adjusting plate in the shallow wave trough and the first radial adjusting plate in the adjacent wave crest is flat and seamless; the matching surfaces of the two sides of the deep wave valley wall and the first radial adjusting plates in the adjacent wave peaks are flat and seamless;
the arc matching surfaces of two first circumferential adjusting plates in the two first adjusting plates forming the wave crest have the same radius, and the two first circumferential adjusting plates always keep overlapping and have no gap when rotating around the respective pin shafts; the arc matching surfaces of two second circumferential adjusting plates in the two second adjusting plates forming the shallow trough have equal radiuses, and the two second circumferential adjusting plates always keep overlapping and have no gap when rotating around the respective pin shafts.
2. An adjustable depth lobe nozzle structure as claimed in claim 1 wherein: a plurality of guide sliding grooves are uniformly formed in the circumferential direction on the wall surface of the front end of the injection sleeve; the plurality of power components are circumferentially and uniformly fixedly arranged on the outer wall surface of the front end of the injection sleeve, the power components are of telescopic structures, a connecting rod is fixedly arranged at the output end of each power component, two transmission rings are slidably arranged on the inner wall surface of the injection sleeve, a plurality of connection lugs which are circumferentially and uniformly distributed are fixedly arranged at the front end of each transmission ring, the connection lugs arranged on the two transmission rings are in one-to-one correspondence with the connecting rods arranged on the power components and are mutually hinged, and the connecting rods penetrate through guide sliding grooves formed in the injection sleeve; the second adjusting plate is connected with the front transmission ring of the two transmission rings through the connecting rod assembly, and the first adjusting plate is connected with the rear transmission ring of the two transmission rings through the connecting rod assembly.
3. An adjustable depth lobe nozzle structure according to claim 2, wherein: the connecting rod assembly comprises a fixed support lug, a first transmission rod, a first installation swing rod, a second transmission rod, a second installation swing rod and a third transmission rod, wherein the fixed support lug is fixedly installed on the adjusting plate, the first installation swing rod and the second installation swing rod are installed on the outer wall surface of the main flow sleeve in a swinging mode, one end of the third transmission rod is installed on a corresponding transmission ring in a hinging mode, and the other end of the third transmission rod is connected with the upper end of the second installation swing rod in a hinging mode; one end of the second transmission rod is connected with the upper end of the second installation swing rod in a hinged mode, the other end of the second transmission rod is connected with the upper end of the first installation swing rod in a hinged mode, one end of the first transmission rod is connected with a fixed support lug arranged on the corresponding adjusting plate in a hinged mode, and the other end of the first transmission rod is connected with the upper end of the first installation swing rod in a hinged mode; the distance between the hinge points of the first installation swing rod and the second installation swing rod on the main flow sleeve is equal to the length of the second transmission rod.
4. A method of adjusting an adjustable depth lobe nozzle structure according to claim 3, wherein: when the engine is in a certain state, the power assembly is controlled to work according to the known area of the outlet of the main spray pipe in the state, and the corresponding transmission ring is driven to slide by the connecting rod when the power assembly stretches or shortens; the transmission ring slides and can drive the third transfer line to swing, and the third transfer line swings and drives the second installation pendulum rod to swing, and the second installation pendulum rod swings and drives the second transfer line to swing, and the second transfer line swings and drives the first installation pendulum rod to swing, and the first installation pendulum rod swings and drives the first transfer line to swing, and the first transfer line swings and drives corresponding regulating plate to swing around the relative mainstream sleeve of respective round pin axle through fixed journal stirrup, realizes the regulation of crest and shallow trough and satisfies that trailing edge department area between each group lobe is the same each other when adjusting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310259485.5A CN116104661B (en) | 2023-03-17 | 2023-03-17 | Depth-adjustable lobe spray pipe structure and adjusting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310259485.5A CN116104661B (en) | 2023-03-17 | 2023-03-17 | Depth-adjustable lobe spray pipe structure and adjusting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116104661A CN116104661A (en) | 2023-05-12 |
| CN116104661B true CN116104661B (en) | 2023-08-25 |
Family
ID=86261766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310259485.5A Active CN116104661B (en) | 2023-03-17 | 2023-03-17 | Depth-adjustable lobe spray pipe structure and adjusting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116104661B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3012442A1 (en) * | 2014-10-23 | 2016-04-27 | Pratt & Whitney Canada Corp. | Integrated turbine exhaust struts and mixer of turbofan engine |
| CN210531014U (en) * | 2019-09-18 | 2020-05-15 | 重庆天骄航空动力有限公司 | Lobe mixer |
| CN111997780A (en) * | 2020-09-02 | 2020-11-27 | 南昌航空大学 | Claw-type wave crest spoiler for alternating lobe spray pipe |
| CN112112743A (en) * | 2020-09-02 | 2020-12-22 | 南昌航空大学 | Sword-shaped deep trough alternating lobe spray pipe |
| CN113047979A (en) * | 2021-04-01 | 2021-06-29 | 南昌航空大学 | Lobed wave crest for in-band beveling or fan-shaped treatment lobe nozzle |
| CN115030836A (en) * | 2022-06-27 | 2022-09-09 | 南京航空航天大学 | Wave valve type rear duct ejector with mode adjusting and mixing strengthening functions |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7578133B2 (en) * | 2005-03-28 | 2009-08-25 | United Technologies Corporation | Reduced radar cross section exhaust nozzle assembly |
| US9091230B2 (en) * | 2012-05-16 | 2015-07-28 | The Boeing Company | Linked ring petal actuation for variable area fan nozzle |
-
2023
- 2023-03-17 CN CN202310259485.5A patent/CN116104661B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3012442A1 (en) * | 2014-10-23 | 2016-04-27 | Pratt & Whitney Canada Corp. | Integrated turbine exhaust struts and mixer of turbofan engine |
| CN210531014U (en) * | 2019-09-18 | 2020-05-15 | 重庆天骄航空动力有限公司 | Lobe mixer |
| CN111997780A (en) * | 2020-09-02 | 2020-11-27 | 南昌航空大学 | Claw-type wave crest spoiler for alternating lobe spray pipe |
| CN112112743A (en) * | 2020-09-02 | 2020-12-22 | 南昌航空大学 | Sword-shaped deep trough alternating lobe spray pipe |
| CN113047979A (en) * | 2021-04-01 | 2021-06-29 | 南昌航空大学 | Lobed wave crest for in-band beveling or fan-shaped treatment lobe nozzle |
| CN115030836A (en) * | 2022-06-27 | 2022-09-09 | 南京航空航天大学 | Wave valve type rear duct ejector with mode adjusting and mixing strengthening functions |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116104661A (en) | 2023-05-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5968329B2 (en) | Integrated variable shape flow restrictor and heat exchanger | |
| CN111380074B (en) | Intelligent adjusting system for air flow distribution of combustion chamber and working method thereof | |
| CN109184947A (en) | A kind of Integral rotary convergence vector spray | |
| US20170166318A1 (en) | Exhaust nozzle for gas turbine engine | |
| RU2001120111A (en) | TURBINE AND TURBOCHARGER WITH RAPID AIR FLOW | |
| CN114251188B (en) | Spray pipe structure based on adaptive variable cycle engine and operation method thereof | |
| CN115030836A (en) | Wave valve type rear duct ejector with mode adjusting and mixing strengthening functions | |
| CN112377946A (en) | Large bent pipe structure of axial floating type backflow annular combustion chamber | |
| CN116378847B (en) | Single-drive lobe nozzle structure with heat transfer and structural reinforcement | |
| CN109184948A (en) | It is a kind of for short distance or the vectoring nozzle of vertically taking off and landing flyer | |
| CN116104661B (en) | Depth-adjustable lobe spray pipe structure and adjusting method | |
| CN116163853B (en) | Lobe-adjustable spray pipe structure | |
| CN112855380B (en) | Flow regulating device of axisymmetric channel, tail nozzle using same and regulating method | |
| CN113154457B (en) | Flame tube and elbow cooling structure of backflow combustion chamber | |
| CN214064902U (en) | Novel adjustable cyclone device of rotary kiln combustor | |
| CN116591857B (en) | Adjustable lobe design method | |
| CN114893321B (en) | Self-adaptive variable-cycle engine axisymmetric exhaust structure | |
| US3000183A (en) | Spiral annular combustion chamber | |
| RU2680781C1 (en) | Turbojet engine afterburner combustion chamber combustion zone stabilization method and the turbojet engine afterburner combustion chamber | |
| US5269138A (en) | Variable geometry flame trap device for use in an after-burner device of a gas turbine | |
| CN106885237B (en) | Burner with a burner body | |
| CN117418963A (en) | Adjustable lobe injection spray pipe with trimming notch | |
| CN115234940B (en) | Rotary knocking combustion chamber with adjustable annular cavity | |
| US11788726B2 (en) | Varying dilution hole design for combustor liners | |
| CN116202106B (en) | Engine combustion chamber flame tube structure with coupling design of air film holes and blending holes |
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 |