CN105644770B - A kind of drag reduction method of the drag reduction wing of imitative sharkskin - Google Patents
A kind of drag reduction method of the drag reduction wing of imitative sharkskin Download PDFInfo
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- CN105644770B CN105644770B CN201511022654.5A CN201511022654A CN105644770B CN 105644770 B CN105644770 B CN 105644770B CN 201511022654 A CN201511022654 A CN 201511022654A CN 105644770 B CN105644770 B CN 105644770B
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- wing
- drag reduction
- skinning layer
- memory polymer
- imitative sharkskin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C3/00—Wings
- B64C3/18—Spars; Ribs; Stringers
- B64C3/187—Ribs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C3/00—Wings
- B64C3/26—Construction, shape, or attachment of separate skins, e.g. panels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C3/00—Wings
- B64C3/36—Structures adapted to reduce effects of aerodynamic or other external heating
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Laminated Bodies (AREA)
- Moulding By Coating Moulds (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
Abstract
The drag reduction wing of imitative sharkskin, belongs to drag reduction wing field.In order to solve the problem of aircraft surfaces vortex constitutes flight resistance.The drag reduction wing of imitative sharkskin, fuselage (1) surface installation rate sensor (3), in wing (2) surface attachment skinning layer (4), skinning layer (4) surface has forms groove (6) between the raised rib (5) of one group of arc, adjacent two raised ribs (5).The drag reduction method of the drag reduction wing of imitative sharkskin, if the resistance that velocity sensor (3) is measured is excessive, heating skinning layer (4) makes it heat up, and by becoming trailing edge wing or becoming the tensile force of string degree wing, forms imitative sharkskin rib structure.The present invention changes the characteristic in the flow field around aircraft, so as to reduce resistance suffered by aircraft flight by imitative sharkskin rib structure.
Description
Technical field
The present invention relates to a kind of drag reduction method of the drag reduction wing of imitative sharkskin.
Background technology
Various biologies are filled with nature, the characteristic on structure, material and surface that they have in itself,
It can be developed as commercial use.Then biomimetics, as its name suggests, that is, study the characteristic of plant and animal in nature
Make inspiration design.By studying and understanding the mechanism of these natural phenomenas, we are possible to replicate these phenomenons for us
Demand.Imitate and grown with the shark quickly paraded along flow direction like rib structure, this structure is considered as
For reducing the frictional resistance in chaotic flow field.It will be replicated on the basis of shark rib structure and improved structure entered
Row research and application, it is found that maximum can provide the drag reducing efficiency close to 10.
When actually fluid flows through body surface, superficial layer can produce vortex, and vortex and surface action also have adjacent whirlpool
Stream effect the vortex of near surface can be made outwards to project rapidly, at this moment they can and the vortex of outer layer tangle distort together with, make
Its instantaneous velocity becomes big.Be vortexed rapid outer layers project transformation and the chaotic flowing with outer layer be momentum-exchange form,
Also constitute the principal element of influence fluid resistance.Reduce this vortex it is outer penetrate be drag reduction key factor, it is former according to this
The successful possibility of drag reduction technology that reason is proposed is sizable.
The content of the invention
The invention aims to solve the problem of aircraft surfaces vortex constitutes flight resistance, and propose a kind of imitative shark
The drag reduction wing of skin.
The drag reduction wing of imitative sharkskin, its composition includes：The wing of fuselage both sides is separately mounted to, is installed in fuselage surface
One group of velocity sensor, in the surface attachment skinning layer of each wing, covering layer surface has the raised rib of one group of arc, phase
Groove is formed between adjacent two raised ribs；And raised rib is wound around aerofoil surface, the cross section of every raised rib
Oval or circle, the area of every salient rib sliver transvers section is about 245-628mm2, adjacent two salient rib sliver transvers sections
The distance between place ellipse or circular midpoint are 25-40mm；
Wherein, the elastomer that skinning layer is set by shape-memory polymer matrix and shape-memory polymer intrinsic silicon
Body is constituted.
The drag reduction method of the drag reduction wing of imitative sharkskin, the drag reduction method of the drag reduction wing of the imitative sharkskin passes through following
Step realization,
It is placed on Step 1: elastomer body is rolled into helical form in shape-memory polymer matrix, forms elastomer and increase
Strong shape memory polymer composite material, heats to elastomer reinforced shape memory polymer composite, makes its temperature liter
Height, and apply external force and elongate shape-memory polymer matrix, now in elastomer reinforced shape memory polymer composite wood
Expect that surface is formed with raised rib and the spaced imitative sharkskin rib structure of groove；
Step 2: the temperature for the elastomer reinforced shape memory polymer composite that reduction step one is obtained, makes shape
Shape memory polymer matrix produces restorable restoring force, and finally restores to the original state, that is, imitative sharkskin rib structure has been made
Skinning layer；
Step 3: the skinning layer that step 2 is made to be laid on to the table for becoming trailing edge wing or change string degree wing of aircraft
Face；
Step 4: in flight course, skinning layer installed in the velocity sensor of fuselage surface by measuring surrounding flow field feelings
Condition, raised rib and groove are produced to judge whether to need the surface texture of change skinning layer：
If velocity sensor measures aircraft flight speed in 500-1000km/h, that is, it is judged as the table for needing to change skinning layer
Face structure, then heating skinning layer makes it heat up, and by becoming trailing edge wing or becoming the tensile force of string degree wing, produces imitative sharkskin
Rib structure；
Otherwise, without changing the surface texture of skinning layer.
Beneficial effects of the present invention are：
The present invention is local wing is produced some similar shark rib structures in the flight course of aircraft, by imitating shark
Fish-skin rib structure, changes the characteristic in the flow field around aircraft, so as to reduce resistance suffered by aircraft flight.And skinning layer used is
For imitative sharkskin rib structure covering, it is made up of elastomer reinforced shape memory polymer composite, shape memory gathers
Compound composite material is made up of shape memory polymer material and elastomer body.Elastomer enhancing shape memory used gathers
Compound composite material can recovery strain reached more than 10%, with it is larger can recovery strain, then again can be defeated when replying
Go out larger external force.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is that surface of the present invention is formed with raised rib 5 and the spaced imitative sharkskin rib knot of groove 6
The skinning layer of structure；
Structural representation when Fig. 3 is the reinstatement of skinning layer of the present invention；
Embodiment
Embodiment one：
The drag reduction wing of the imitative sharkskin of present embodiment, with reference to shown in Fig. 1, its composition includes：It is separately mounted to fuselage 1
The wing 2 of both sides, installs one group of velocity sensor 3, in the surface attachment skinning layer 4 of each wing 2, covering on the surface of fuselage 1
4 surface of layer have forms groove 6 between the raised rib 5 of one group of arc, adjacent two raised ribs 5；And raised rib 5 is to twine
It is wound on the surface of wing 2, the cross section of every raised rib 5 is oval or circle, the area of the every raised cross section of rib 5
About 245-628mm2, the distance between ellipse or circular midpoint where the adjacent two raised cross sections of rib 5 are 25-
40mm；
Wherein, the elasticity that skinning layer 4 is set by shape-memory polymer matrix 7 and the inside of shape-memory polymer matrix 7
Corpus fibrosum 8 is constituted.
Embodiment two：
From unlike embodiment one, the drag reduction wing of the imitative sharkskin of present embodiment, every raised rib 5
Angle where the arc of formation between plane and the axis of fuselage 1 is 20-80 °.
Embodiment three：
From unlike embodiment one or two, the drag reduction wing of the imitative sharkskin of present embodiment, shape memory
The elastomer body 8 that the inside of polymeric matrix 7 is set is thread for spiral shape.
Embodiment four：
From unlike embodiment three, the drag reduction wing of the imitative sharkskin of present embodiment, the wing 2 for become
Trailing edge wing becomes string degree wing.
Embodiment five：
From unlike embodiment one, two or four, the drag reduction wing of the imitative sharkskin of present embodiment, shape note
Recall polymeric matrix 7 to make using shape memory polymer material, with when when temperature is high, yielding, temperature is low automatically recovering
The characteristic of original state.
Embodiment six：
The drag reduction method of the drag reduction wing of the imitative sharkskin of present embodiment, the drag reduction of the drag reduction wing of the imitative sharkskin
Method realized by following steps,
It is placed on Step 1: elastomer body 8 is rolled into helical form in shape-memory polymer matrix 7, forms elastomer
Reinforced shape memory polymer composite (smp), adds to elastomer reinforced shape memory polymer composite (smp)
Heat, raises its temperature, and applies external force and elongate shape-memory polymer matrix 7, as shown in figure 3, now in elastomer
Reinforced shape memory polymer composite (smp) surface, which is formed, has raised rib 5 and the spaced imitative sharkskin of groove 6
Rib structure；
Step 2: the temperature for the elastomer reinforced shape memory polymer composite (smp) that reduction step one is obtained,
Shape-memory polymer matrix is produced restorable restoring force, and finally restore to the original state, as shown in Fig. 2 being made imitative
The skinning layer 4 of sharkskin rib structure；Property of reduction drag is realized by imitative sharkskin framing system with this, to reduce aircraft flight mistake
Resistance in journey.
Step 3: the skinning layer 4 that step 2 is made to be laid on to the table for becoming trailing edge wing or change string degree wing of aircraft
Face；
Step 4: in flight course, skinning layer 4 measures surrounding flow field by the velocity sensor 3 installed in the surface of fuselage 1
Situation, raised rib 5 and groove 6 are produced to judge whether to need the surface texture of change skinning layer 4：
If velocity sensor 3 measures aircraft flight speed in 500-1000km/h, that is, it is judged as needing to change skinning layer 4
Surface texture, then heating skinning layer 4 makes it heat up, and by becoming trailing edge wing or becoming the tensile force of string degree wing, produces imitative shark
Fish-skin rib structure；
Otherwise, without changing the surface texture of skinning layer 4.
The present invention can also have other various embodiments, in the case of without departing substantially from spirit of the invention and its essence, this area
Technical staff works as can make various corresponding changes and deformation according to the present invention, but these corresponding changes and deformation should all belong to
The protection domain of appended claims of the invention.
Claims (1)
1. a kind of drag reduction method of the drag reduction wing of imitative sharkskin, it is characterised in that：The drag reduction wing of the imitative sharkskin subtracts
Resistance method realized by following steps,
It is placed on Step 1: elastomer body (8) is rolled into helical form in shape-memory polymer matrix (7), forms elastomer
Reinforced shape memory polymer composite, heats to elastomer reinforced shape memory polymer composite, makes its temperature
Rise, and apply external force by shape-memory polymer matrix (7) elongation, now answered in elastomer reinforced shape memory polymer
Condensation material surface, which is formed, has raised rib (5) and the spaced imitative sharkskin rib structure of groove (6)；
Step 2: the temperature for the elastomer reinforced shape memory polymer composite that reduction step one is obtained, remembers shape
Recall polymeric matrix and produce restorable restoring force, and finally restore to the original state, that is, the illiteracy of imitative sharkskin rib structure has been made
Cortex (4)；
Step 3: the skinning layer (4) that step 2 is made is laid on the surface for becoming trailing edge wing or change string degree wing of aircraft；
Step 4: in flight course, skinning layer (4) around the measurement of the velocity sensor (3) on fuselage (1) surface by flowing
Field situation, raised rib (5) and groove (6) are produced to judge whether to need the surface texture of change skinning layer (4)：
If velocity sensor (3) measures aircraft flight speed in 500-1000km/h, that is, it is judged as needing to change skinning layer (4)
Surface texture, then heating skinning layer (4) makes it heat up, and by becoming trailing edge wing or becoming the tensile force of string degree wing, produces imitative
Sharkskin rib structure；
Otherwise, without changing the surface textures of skinning layer (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511022654.5A CN105644770B (en) | 2015-12-30 | 2015-12-30 | A kind of drag reduction method of the drag reduction wing of imitative sharkskin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511022654.5A CN105644770B (en) | 2015-12-30 | 2015-12-30 | A kind of drag reduction method of the drag reduction wing of imitative sharkskin |
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| Publication Number | Publication Date |
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| CN105644770A CN105644770A (en) | 2016-06-08 |
| CN105644770B true CN105644770B (en) | 2017-08-25 |
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106240799A (en) * | 2016-09-07 | 2016-12-21 | 中国航空工业集团公司哈尔滨空气动力研究所 | A kind of wing improving band sawtooth swept-back wing transonic speed horizontal flight quality |
| CN106275387A (en) * | 2016-09-07 | 2017-01-04 | 中国航空工业集团公司哈尔滨空气动力研究所 | A kind of band sawtooth swept-back wing that improves transonic speed is fallen off the wing of characteristic |
| CN106240797A (en) * | 2016-09-07 | 2016-12-21 | 中国航空工业集团公司哈尔滨空气动力研究所 | A kind of wing improving band sawtooth swept-back wing transonic speed maneuvering characteristics |
| CN106585949B (en) * | 2017-02-10 | 2019-01-08 | 哈尔滨工业大学 | A kind of bionical sharkskin drag reduction structures |
| CN106585948B (en) * | 2017-02-10 | 2019-10-29 | 哈尔滨工业大学 | A kind of empty amphibious unmanned vehicle of water |
| CN109795673B (en) * | 2019-01-24 | 2024-03-26 | 深圳大学 | Manufacturing method of unmanned aerial vehicle rotor wing surface microstructure drag reduction film |
| CN109849956A (en) * | 2019-04-01 | 2019-06-07 | 华东交通大学 | A kind of high-speed train head surface micro-structure drag reduction design and implementation methods |
| CN110282070B (en) * | 2019-06-28 | 2021-11-16 | 哈尔滨工业大学 | Integrated piezoelectric vibration resistance reducer capable of being embedded into wall surface |
| CN110939712A (en) * | 2019-12-17 | 2020-03-31 | 合肥工业大学 | Shark bionic gear |
| CN112389630B (en) * | 2020-11-23 | 2021-11-30 | 中国航天空气动力技术研究院 | Weight reduction wing of ultrahigh-speed cruise aircraft in upper atmosphere |
| CN114801358B (en) * | 2022-04-29 | 2023-02-28 | 吉林大学 | Bionic dynamic allosteric skin of underwater vehicle with intelligent self-adaptive drag reduction |
| CN117302480B (en) * | 2023-08-08 | 2024-03-22 | 中国船舶集团有限公司第七一九研究所 | Unmanned submarine stern rudder noise reduction device |
| CN117208181B (en) * | 2023-08-08 | 2024-02-09 | 中国船舶集团有限公司第七一九研究所 | Use method of noise reduction equipment for stern rudder |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6345791B1 (en) * | 2000-04-13 | 2002-02-12 | Lockheed Martin Corporation | Streamwise variable height riblets for reducing skin friction drag of surfaces |
| CN101565102A (en) * | 2008-04-26 | 2009-10-28 | 刘景斌 | Bionic airplane |
| US8668166B2 (en) * | 2009-01-29 | 2014-03-11 | The Boeing Company | Shape memory riblets |
| CN101708772A (en) * | 2009-11-24 | 2010-05-19 | 南京航空航天大学 | Skin of morphing wing and drive method thereof |
| CN103821801B (en) * | 2014-02-23 | 2016-02-10 | 中国科学院工程热物理研究所 | A kind of drag reduction rib |
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