CN113911349B - Annular lifting wing device with double winglets for pneumatic suspension train - Google Patents
Annular lifting wing device with double winglets for pneumatic suspension train Download PDFInfo
- Publication number
- CN113911349B CN113911349B CN202111108583.6A CN202111108583A CN113911349B CN 113911349 B CN113911349 B CN 113911349B CN 202111108583 A CN202111108583 A CN 202111108583A CN 113911349 B CN113911349 B CN 113911349B
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- Prior art keywords
- wing
- wings
- ground effect
- pneumatic suspension
- suspension train
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C35/00—Flying-boats; Seaplanes
- B64C35/006—Flying-boats; Seaplanes with lift generating devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C39/00—Aircraft not otherwise provided for
- B64C39/06—Aircraft not otherwise provided for having disc- or ring-shaped wings
- B64C39/062—Aircraft not otherwise provided for having disc- or ring-shaped wings having annular wings
Abstract
The invention discloses an annular lifting wing device with double winglets for a pneumatic suspension train, and relates to the technical field of lifting devices for pneumatic suspension trains. The pneumatic suspension train comprises a pneumatic suspension train body, and further comprises side wings, wing tip winglets, pressure maintaining winglets, ground effect wings and upper wings, wherein the upper wings are arranged on two sides of the upper end of the pneumatic suspension train body, and the ground effect wings are arranged on two sides of the lower end of the pneumatic suspension train body. The invention adopts a double-layer wing structure, reduces the span length on the basis of a single wing, improves the lift effect, greatly reduces the track construction occupied area, increases the structural strength due to the reduced span, provides enough centripetal force in steering by design, and quickly returns to the middle due to pressure difference on two sides due to disappearance of the centripetal force after the track is driven out of a curve and automatically keeps running in the center of the track.
Description
Technical Field
The invention relates to the technical field of lift devices for pneumatic suspension trains, in particular to an annular lift wing device with double winglets for a pneumatic suspension train.
Background
A ground effect aircraft is an aircraft that uses the ground effect, namely the induced drag of the aircraft is reduced, and at the same time, a hydrodynamic effect with a higher lift-to-drag ratio than that of an air flight can be obtained, and a traditional ground effect aircraft is a water plane, and the ground effect aircraft often has the characteristic of large span length, and meanwhile has the following defects:
1. the large chord of the aircraft occupies a large amount of land resources, and meanwhile, the structural strength is low;
2. the vehicle cannot achieve larger centripetal force when turning, so that running is unstable;
3. the working medium changes from relative to the water surface to relative to the air when the water plane takes off, which can cause instability in the take-off and landing stage;
4. the double-layer wing has a pair of larger wingtip vortices, so that a large amount of energy is consumed;
5. the blocking effect is evident, and a large pressure is formed in the flow field channels of the earth effect fin and the ground, and if the flow field channels are not effectively sealed, the pressure leakage is caused, so that the effect of the ground effect is reduced.
Disclosure of Invention
The invention aims to provide an annular lifting wing device with double winglets for a pneumatic suspension train, which is used for solving the existing problems: when the multi-wall surface coupling ground effect pneumatic suspension train adopts a single-layer lift wing, the occupied area is large, the course stability is poor, and the wingtip vortex energy loss of the double-layer wing is large.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides an annular lift wing device for pneumatic suspension train takes two winglets, includes pneumatic suspension train main part, still includes flank, wing tip winglet, pressurize winglet, ground effect wing and upper layer wing, the both sides of pneumatic suspension train main part upper end all are provided with the upper layer wing, ground effect wing sets up in the both sides of the lower extreme of pneumatic suspension train main part, flank and upper layer wing and ground effect wing smooth connection, the wing tip winglet sets up in the upper end extension of flank beyond upper layer wing upper edge department, pressurize winglet sets up in flank downwardly extending beyond ground effect wing lower edge department.
Preferably, the installation position of the ground effect wing is positioned at the front end of the installation position of the upper layer wing, and the ground clearance of the ground effect wing is a ground effect height section.
Preferably, the shape of the wing tip winglet, the shape of the ground effect wing and the shape of the upper layer wing are all backward inclined postures.
Preferably, the upper layer wings, the side wings and the ground effect wings form annular wings when installed on the main body of the pneumatic suspension train, and the annular wings are in an inverted trapezoid shape with wide upper part and narrow lower part.
Preferably, the side wings form an angle with the ground, the chord length of the side wings is larger than that of the ground effect wings and the upper layer wings, and the front and rear extension parts of the side wings extend beyond the upper layer wings and the ground effect wings.
Preferably, a high-pressure channel is formed between the pressure maintaining winglet and the ground.
The structure in the annular wing adopted by the invention not only connects the upper layer wing with the ground effect wing to strengthen the structural strength, but also provides enough centripetal force for steering because the wing wings are wing wings with ground effect and the gap between the wing wings and the running track is the effective region of the ground effect, so that the pressure between the wing wings and the track is sharply increased when the side of the train is close to the track during turning. After the vehicle leaves the curve, the two sides of the vehicle, which disappear due to the centripetal force, can quickly return to the center due to the pressure difference and automatically keep running in the center of the track;
the above-mentioned side wings are parallel to the track and the ring-shaped wings are about the shape of an inverted trapezoid with a large upper part and a small lower part, and the advantage of this structure is that when the train is traveling straight at high speed, a lower resistance is required, the ground effect can greatly increase the lift but also can slightly increase the overall resistance due to the blocking effect, while when the pneumatic levitation train is traveling at high speed, the ground clearance can slightly increase, the clearance between the track and the side wings can slightly increase, so that the clearance between the side wings and the track is also at the critical distance of the ground effect, which can reduce the overall resistance of the pneumatic levitation train, and since the side wings are not perpendicular to the ground but are at a certain angle, there is a certain lift component in the lift direction. In addition, the inverted trapezoid annular wing and the track have the effect of automatic centering, namely when the speed of the train is reduced, the ground clearance is reduced, at the moment, the clearance between the side wings at two sides and the track is also reduced, and due to the characteristic of ground effect, the lift force is increased sharply when the wing surface is close to the ground, so that the running fault tolerance of the pneumatic suspension train is greatly increased. The side wings in the device are also used as vertical stabilizers of the pneumatic suspension train, so that the course stability is greatly improved;
the wing tip winglet is adopted and integrated with the wing wings into a whole for smooth connection, the wing tip winglet has a sweepback shape, so that the phenomenon that high-pressure air flow extruded by the wing wings and the rails rolls to the upper wing surface of the upper wing layer can be reduced, on one hand, a large-scale vortex structure is formed by the airflow rolling, a large amount of energy is consumed by the wing tip vortex, the integral resistance is increased, on the other hand, the upper wing surface is a negative pressure area, the negative pressure area of the upper wing surface after the high-pressure air flow rolls to the upper wing surface is reduced, the absolute value of the negative pressure is reduced, the integral lifting force is reduced, the wing tip winglet device can effectively reduce the formation of the wing tip vortex, the effective wing span of the annular wing is improved, and meanwhile, the wing itself has a similar function, so that the airflow energy loss during running can be greatly reduced by adopting the annular wing structure, and the aerodynamic performance of the pneumatic suspension train is improved;
by adopting the structure of the pressure maintaining winglet, as the gap between the ground effect wing and the ground is small, the blocking effect is obvious, and large pressure can be formed in the flow field channel between the ground effect wing and the ground, if the pressure leakage is not effectively sealed, the effect of the ground effect can be reduced, and if the pressure maintaining treatment is not carried out on the side edge, the wingtip vortex can be formed, so that the overall lifting force can be further reduced.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention adopts a double-layer wing structure, reduces the wing span length on the basis of a single wing, improves the lift effect, greatly reduces the track construction occupied area, and increases the structural strength due to the reduced wing span;
2. by design, the invention provides enough centripetal force in steering, and after the vehicle leaves a curve, the two sides of the vehicle can quickly return to the center due to pressure difference due to the disappearance of the centripetal force and automatically keep running in the center of the track;
3. according to the invention, lower resistance is required when the train runs straight at a high speed, the ground effect can greatly increase the lift force but can also slightly increase the overall resistance due to the blocking effect, the ground clearance height can be slightly increased when the pneumatic suspension train runs at a high speed, the pneumatic suspension train runs at the critical height of the ground effect, and the lift force can be rapidly increased when the wing surface approaches the ground due to the characteristic of the ground effect, so that the running fault tolerance of the pneumatic suspension train is greatly increased;
4. the annular wing structure can greatly reduce the energy loss of the air flow during operation and improve the pneumatic performance of the pneumatic suspension train;
5. by design, the invention greatly reduces wingtip vortex and improves the integral lifting force.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a left side view of a ring wing based on ground effect mounted on a pneumatic suspension train body
FIG. 2 is a rear view of an annular wing based on ground effect mounted on a pneumatic train body
FIG. 3 is a top view of a ring wing based on ground effect mounted on a pneumatic train body
In the figure: 1. a side wing; 2. wing tip winglets; 3. pressure maintaining winglets; 4. earth effect wings; 5. upper wing.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Referring to fig. 1-3, an annular lifting wing device with double winglets for a pneumatic suspension train comprises a pneumatic suspension train body, and further comprises a side wing 1, a wing tip winglet 2, a pressure maintaining winglet 3, a ground effect wing 4 and an upper wing 5, wherein the upper wing 5 is arranged on two sides of the upper end of the pneumatic suspension train body, the ground effect wing 4 is arranged on two sides of the lower end of the pneumatic suspension train body, the side wing 1 is smoothly connected with the upper wing 5 and the ground effect wing 4, the wing tip winglet 2 is arranged at the position where the upper end of the side wing 1 extends beyond the upper edge of the upper wing 5, and the pressure maintaining winglet 3 is arranged at the position where the side wing 1 extends downwards beyond the lower edge of the ground effect wing 4.
The installation position of the ground effect wing 4 is positioned at the front end of the installation position of the upper layer wing 5, and the ground clearance of the ground effect wing 4 is a ground effect height section;
the shape of the wing tip winglet 2, the shape of the ground effect wing 4 and the shape of the upper layer wing 5 are all in backward inclined postures;
the upper layer wing 5, the side wings 1 and the ground effect wing 4 form annular wings when being arranged on the main body of the pneumatic suspension train, and the annular wings are in an inverted ladder shape with wide upper part and narrow lower part;
the side wings 1 form an angle with the ground, the chord length of the side wings 1 is larger than that of the ground effect wings 4 and the upper layer wings 5, and the front and rear extension parts of the side wings 1 extend beyond the upper layer wings 5 and the ground effect wings 4;
a high-pressure channel is formed between the pressure maintaining winglet 3 and the ground effect wing 4.
The structure 1 in the annular wing adopted by the invention not only connects the upper layer wing 5 with the ground effect wing 4 to strengthen the structural strength, but also provides enough centripetal force for steering because the wing wings 1 are wing wings with ground effect and the gaps between the wing wings 1 and the running track are effective intervals of the ground effect, so that the pressure between the wing wings 1 and the track is sharply increased when the side of a train is close to the track during turning. After the vehicle leaves the curve, the two sides of the vehicle, which disappear due to the centripetal force, can quickly return to the center due to the pressure difference and automatically keep running in the center of the track;
the above-mentioned side wing 1 is parallel to the track and the ring-shaped wing is about an inverted trapezoid shape with a large upper part and a small lower part, and the advantage of this structure is that when the train is traveling straight at high speed, a lower resistance is required, the ground effect can increase the overall resistance by a small amount due to the blocking effect although the lift force can be greatly increased, and when the pneumatic levitation train is traveling at high speed, the ground clearance height can be slightly increased, the running at the critical height of the ground effect, the clearance between the track and the side wing 1 can be slightly increased, the clearance between the side wing 1 and the track is also at the critical distance of the ground effect, which can reduce the overall resistance of the pneumatic levitation train, and since the side wing 1 is not perpendicular to the ground but is at a certain angle, there is a certain lift force component in the lift force direction. In addition, the inverted trapezoid annular wing and the track have the effect of automatic centering, namely when the speed of the train is reduced, the ground clearance can be reduced, the clearance between the side wings 1 on two sides and the track can be reduced, and due to the characteristic of ground effect, the lift force can be sharply increased when the wing surface approaches the ground, so that the running fault tolerance of the pneumatic suspension train is greatly increased. The side wing 1 in the device is also used as a vertical stabilizer of the pneumatic suspension train, so that the course stability is greatly improved;
the wing tip winglet 2 is adopted and integrated with the wing 1 into a whole for smooth connection, the wing tip winglet 2 has a sweepback shape, so that the phenomenon that high-pressure air flow extruded by the wing 1 and a track rolls to the upper wing surface of the upper wing 5 can be reduced, on one hand, a large-scale vortex structure is formed by the airflow rolling, a large amount of energy is consumed by the wing tip vortex, the integral resistance is increased, on the other hand, the upper wing surface is a negative pressure area, the negative pressure area of the upper wing surface is reduced after the high-pressure air flow rolls to the upper wing surface, the negative pressure absolute value is reduced, the integral lift is reduced, the wing tip vortex is effectively reduced by adopting the wing tip winglet 2, the effective span of the annular wing is improved, meanwhile, the wing 1 has a similar function, the airflow rolling from the high-pressure area of the lower wing surface to the negative pressure area of the upper wing surface can be effectively prevented, the airflow energy loss during operation can be greatly reduced, and the aerodynamic suspension performance of the pneumatic train can be improved by adopting the annular wing structure;
by adopting the structure of the pressure maintaining winglet 3, since the clearance between the ground effect wing 4 and the ground is small, the blocking effect is obvious, a large pressure is formed in the flow field channel between the ground effect wing 4 and the ground, if no effective sealing is performed, the effect of the ground effect is reduced due to the pressure leakage, and if the pressure maintaining treatment is not performed on the side, a wingtip vortex is formed as described above, so that the overall lifting force is further reduced.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. The utility model provides a ring lift wing device that is used for pneumatic suspension train to take two winglets, includes pneumatic suspension train main part, its characterized in that: the novel pneumatic suspension train comprises a main body, and is characterized by further comprising a side wing (1), a wing tip winglet (2), a pressure maintaining winglet (3), a ground effect wing (4) and an upper wing (5), wherein the upper wing (5) is arranged on two sides of the upper end of the main body of the pneumatic suspension train, the ground effect wing (4) is arranged on two sides of the lower end of the main body of the pneumatic suspension train, the side wing (1) is smoothly connected with the upper wing (5) and the ground effect wing (4), the wing tip winglet (2) is arranged at the position, extending beyond the upper edge of the upper wing (5), of the side wing (1), and the pressure maintaining winglet (3) is arranged at the position, extending downwards beyond the lower edge of the ground effect wing (4), of the side wing (1).
2. An annular lift wing assembly for a aerotrain with double winglets according to claim 1, wherein: the installation position of the ground effect wing (4) is positioned at the front end of the installation position of the upper layer wing (5), and the ground clearance of the ground effect wing (4) is a ground effect height section.
3. An annular lift wing assembly for a aerotrain with double winglets according to claim 1, wherein: the appearance of the wing tip winglet (2), the appearance of the ground effect wing (4) and the appearance of the upper layer wing (5) are in backward inclined postures.
4. An annular lift wing assembly for a aerotrain with double winglets according to claim 1, wherein: the upper layer wing (5), the side wings (1) and the ground effect wings (4) form annular wings when installed on the pneumatic suspension train body, and the annular wings are in an inverted ladder shape with wide upper part and narrow lower part.
5. An annular lift wing assembly for a aerotrain with double winglets according to claim 1, wherein: the side wings (1) form an angle with the ground, the chord length of the side wings (1) is larger than that of the ground effect wings (4) and the upper layer wings (5), and the front-back extension parts of the side wings (1) exceed the upper layer wings (5) and the ground effect wings (4).
6. An annular lift wing assembly for a aerotrain with double winglets according to claim 1, wherein: and a high-pressure channel is formed between the pressure maintaining winglet (3) and the ground effect wing (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111108583.6A CN113911349B (en) | 2021-09-22 | 2021-09-22 | Annular lifting wing device with double winglets for pneumatic suspension train |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111108583.6A CN113911349B (en) | 2021-09-22 | 2021-09-22 | Annular lifting wing device with double winglets for pneumatic suspension train |
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| Publication Number | Publication Date |
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| CN113911349A CN113911349A (en) | 2022-01-11 |
| CN113911349B true CN113911349B (en) | 2023-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111108583.6A Active CN113911349B (en) | 2021-09-22 | 2021-09-22 | Annular lifting wing device with double winglets for pneumatic suspension train |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115468732B (en) * | 2022-07-26 | 2023-06-23 | 华设设计集团股份有限公司 | High-speed train lifting wing installation arrangement and cooperative control method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0239138A2 (en) * | 1986-03-03 | 1987-09-30 | The Boeing Company | Aircraft wings with aileron-supported ground speed spoilers and trailing edge flaps |
| WO2004009418A1 (en) * | 2002-07-22 | 2004-01-29 | Rollan Gurgenovich Martirosov | Ground-effect craft and method for the cruising flight thereof |
| CN103419935A (en) * | 2013-07-24 | 2013-12-04 | 南京航空航天大学 | Vertical take-off and landing aircraft in saucer-shaped arrangement and based on novel high-lift device |
| CN109334976A (en) * | 2018-10-22 | 2019-02-15 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | A kind of fan wing propulsion ground effect ship |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7296529B2 (en) * | 2005-09-08 | 2007-11-20 | Bereli M. Lazar | Fluidynamic lift combined array, technology |
| CN108995808A (en) * | 2018-08-31 | 2018-12-14 | 耿天侃 | It can the annular wing disc-shaped flying craft that can hover of VTOL |
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2021
- 2021-09-22 CN CN202111108583.6A patent/CN113911349B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0239138A2 (en) * | 1986-03-03 | 1987-09-30 | The Boeing Company | Aircraft wings with aileron-supported ground speed spoilers and trailing edge flaps |
| WO2004009418A1 (en) * | 2002-07-22 | 2004-01-29 | Rollan Gurgenovich Martirosov | Ground-effect craft and method for the cruising flight thereof |
| CN103419935A (en) * | 2013-07-24 | 2013-12-04 | 南京航空航天大学 | Vertical take-off and landing aircraft in saucer-shaped arrangement and based on novel high-lift device |
| CN109334976A (en) * | 2018-10-22 | 2019-02-15 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | A kind of fan wing propulsion ground effect ship |
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| CN113911349A (en) | 2022-01-11 |
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