CN108790210A - Composite material air intake duct and preparation method thereof and aircraft - Google Patents
Composite material air intake duct and preparation method thereof and aircraft Download PDFInfo
- Publication number
- CN108790210A CN108790210A CN201710297113.6A CN201710297113A CN108790210A CN 108790210 A CN108790210 A CN 108790210A CN 201710297113 A CN201710297113 A CN 201710297113A CN 108790210 A CN108790210 A CN 108790210A
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- China
- Prior art keywords
- air intake
- intake duct
- prepreg
- composite material
- preparation
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
- B29C70/342—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using isostatic pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
- B29C33/58—Applying the releasing agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Moulding By Coating Moulds (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The present invention relates to a kind of composite material air intake duct and preparation method thereof and aircraft, the preparation method includes the following steps：A), in die surface paving at least one layer prepreg, at least one prepreg is formed；B) prepreg, is subjected to curing process；C) it, is molded, deviates from the composite material air intake duct green body of preparation.The preparation method, manufacture craft is simple, and producing efficiency is high.The composite material air intake duct prepared by the preparation method can be applied on the aircraft such as dirigible, in the case where holding structure intensity meets normal use requirement, with light weight, the advantages that difficulty of processing is low, and weatherability is strong, can be in the cruising ability for improving aircraft.
Description
Technical field
The present invention relates to field of space technology, more particularly, to a kind of composite material air intake duct and preparation method thereof and
Aircraft.
Background technology
Traditional aircraft, such as the air intake duct of dirigible are prepared with metal material.
Existing this air intake duct, although certain structural strength can be kept, its quality is big, increases aircraft
Total quality is unfavorable for the promotion of the cruising ability of aircraft.Also, since difficulty of processing is big, processing quality is difficult to ensure, greatly
It increases manufacturing cost greatly.On the other hand, the weather resistance of air intake duct made of metal is bad, it is difficult to adapt to aircraft operation
High altitude environment complicated and changeable.
Invention content
In view of this, the purpose of the present invention is to provide a kind of composite material air intake duct and preparation method thereof, it is existing to solve
There is the problem of technology.
According to the first aspect of the invention, a kind of composite material air intake duct preparation method is provided, is included the following steps：
A), in die surface paving at least one layer prepreg, at least one prepreg is formed；
B) prepreg, is subjected to curing process.
C) it, is molded, deviates from the composite material air intake duct green body of preparation.
Preferably, further include following steps：
Before the step a), multilayer degumming agent, each layer degumming are brushed first on the inner surface of the mold
Agent carries out the drying of preset duration respectively after brushing.
Preferably, the drying time of degumming agent described in internal layer is more than 20 minutes, the drying time of degumming agent described in outermost layer
More than 40 minutes.
Preferably, after the releasing agent drying, the paving release cloth layer on the releasing agent,
Wherein, the demoulding layer of cloth is docked by polylith release cloth, and butt seam is less than or equal to 1mm, each piece
The area of the release cloth is more than or equal to 10cm2。
Preferably, in the first prepreg of die surface paving, the first prepreg is formed, first prepreg is ring
Oxygen/span/cyanate quartz or glass prepreg.
Preferably, in the second prepreg of surface paving of the first prepreg, the second prepreg, the second layer are formed
Prepreg is epoxy/span/cyanate carbon fiber prepreg.
Preferably, described to include by the prepreg curing process：
The mold is integrally put into autoclave, curing process is carried out to prepreg.
Preferably, the solidifying pressure of the curing process is 0.6-0.7MPa, and solidification temperature is 100-220 DEG C, and the time is
2-9 hours.
Preferably, the step further includes：
After the step c), the composite material air intake duct billet surface of preparation is polished, the air inlet is made
Road.
Preferably, sand paper used in the composite material air intake duct green body of polishing is 180-240 mesh sand paper.
According to the second aspect of the invention, a kind of composite material air intake duct is provided, the composite material air inlet is used
Road preparation method is made.
The preparation method, manufacture craft is simple, and producing efficiency is high.The composite material air intake duct prepared by the preparation method
It can be applied on the aircraft such as dirigible, in the case where holding structure intensity meets normal use requirement, there is quality
Gently, the advantages that difficulty of processing is low, and weatherability is strong, can be in the cruising ability for improving aircraft.
Description of the drawings
By referring to the drawings to the description of the embodiment of the present invention, above-mentioned and other purposes of the invention, feature and
Advantage will be apparent from.
Fig. 1 shows the flow chart of composite material air intake duct preparation method according to a first embodiment of the present invention.
Fig. 2 shows the prepreg pavings of composite material air intake duct preparation method according to a first embodiment of the present invention in mould
Has the structural schematic diagram on surface.
Fig. 3 shows the step S2 of composite material air intake duct preparation method according to a first embodiment of the present invention) flow
Figure.
Fig. 4 shows the flow chart of composite material air intake duct preparation method according to a second embodiment of the present invention.
Fig. 5 shows the prepreg paving of composite material air intake duct preparation method according to a second embodiment of the present invention in mould
Has the structural schematic diagram on surface.
Fig. 6 shows the step S2 of composite material air intake duct preparation method according to a second embodiment of the present invention) flow
Figure.
In figure：Mold 1, releasing agent layer 2, demoulding layer of cloth 3, the first prepreg 41, the second prepreg 42.
Specific implementation mode
Hereinafter reference will be made to the drawings is more fully described various embodiments of the present invention.In various figures, identical element
It is indicated using same or similar reference numeral.For the sake of clarity, the various pieces in attached drawing are not necessarily to scale.
The present invention provides a kind of composite material air intake duct preparation method, the composite material air inlet prepared using the preparation method
Road is used as, such as the carry-on air intake duct such as dirigible.
First embodiment：
In the embodiment, only in mold 1 surface paving, one layer of prepreg, i.e. the first prepreg forms the first prepreg
41.As shown in Figs. 1-2, composite material air intake duct preparation method according to the ... of the embodiment of the present invention includes the following steps：
S1), 1 surface of mold is handled, to enhance later stage stripping result.
In the step, when brushing releasing agent, it need to ensure that 1 surface temperature of mold is more than certain temperature value, require here >=
15℃.Brushing releasing agent need to confirm that tooling surface cleaning is dried.Releasing agent is dipped with non-dust cloth, is carried out on 1 surface of mold uniform
It brushes.In order to keep not holiday, do not ensure certain applied thickness, multipass brushing need to be carried out, is chosen as brushing 2-3 times, be formed
Releasing agent layer 2.Every layer of releasing agent brushing is uniform, such as carries out intersection brushing in multiple directions, it is ensured that brushes uniformly, if there is demoulding
Agent applies excessively, need to be wiped from mold 1 with clean cloth.Wherein, internal layer releasing agent, brushing finish at least dry 20min；Apply
Last complete layer after that is, outermost releasing agent, need to dry at least 40min in air.When brushing releasing agent, it need to ensure scene
Well-ventilated, brushing are finished and are recorded.After the releasing agent drying, the paving release cloth layer 3 on the releasing agent, wherein institute
Being docked by polylith release cloth for demoulding layer of cloth 3 is stated, and butt seam is less than or equal to 1mm, the face of each piece of release cloth
Product is more than or equal to 10cm^2.The tooling line of composite material air intake duct to be prepared is determined on mold 1.
S2), in 1 the first prepreg of surface paving of mold, the first prepreg 41 is formed.
In the embodiment, need on 1 outer surface surface of mold the first prepreg of paving.As shown in figure 3, in the step, again
Include the following steps：
S21), it will wait for that the first prepreg raw material of paving thaw respectively；
Specifically, it after the first prepreg raw material take out, is placed in clean room and thaws, need to keep sealing in course of defrosting
State prevents it from being contacted with the external world using preceding, and chemical reaction occurs or falls into dust.Pay attention to handling with care when carrying, keep away
Exempt from the material that collides with.
In course of defrosting, clean room temperature is controlled at 18 DEG C -24 DEG C, when material temperature reaches clean room temperature, specifically may be used
Judged not with the method for the apparent temperature difference of environment with being felt with hand, and the evaporated condensation water after hermetic bag outer membrane is dried
It can be used when generation.For thawing time, at 20 DEG C ± 5 DEG C, thawing time >=8h, and finished for cut
Prepreg thawing time >=2 hour.
S22), the first prepreg raw material of defrosting are separately cut；
Specifically, design software Doubly curved surfaces are utilized according to the mathematical model of product, and cuts into corresponding shape, so as to
In paving and form the columnar structured of composite material air intake duct.
S23 the first prepreg paving after), cutting forms the first prepreg 41 on the mold 1.
Specifically, first prepreg is epoxy/span/cyanate quartz or glass prepreg.Complete prepreg
Paving after, prepreg vacuum bag (not shown) is encapsulated, and vacuumize process is carried out, to press prepreg
It is real.Then, vacuum bag is removed.
S3 first prepreg 41), is subjected to curing process.
Specifically, whole be put into autoclave of the mold 1 is subjected to curing process to the first prepreg 41.It is described solid
The solidifying pressure for changing processing is 0.6-0.7MPa, and solidification temperature is 100-220 DEG C, and the time is 2-9 hours.
S4 it), is molded, deviates from the composite material air intake duct green body of preparation.
Mold 1 is molded, the composite material air intake duct idiosome of preparation is deviate from, which has glue thorn etc., make
It is smooth that out-of-flatness must be showed, need to carry out subsequent processing.
S5), the composite material air intake duct billet surface of preparation is polished, the air intake duct is made.
In this step, 180-240 mesh sand paper is selected to beat the outer surface of the composite material air intake duct green body of preparation
It grinds, practice Buddhism or Taoism, keep its surface smooth, to obtain the composite material air intake duct of composite demand.
In the embodiment, on 1 surface of mold successively two layers of prepreg of paving, the preimpregnation of the first prepreg 41 and second is formed
The bed of material 42.As illustrated in figures 4-5, composite material air intake duct preparation method according to the ... of the embodiment of the present invention includes the following steps：
S1), 1 surface of mold is handled, to enhance later stage stripping result.
In the step, when brushing releasing agent, it need to ensure that 1 surface temperature of mold is more than certain temperature value, require here >=
15℃.Brushing releasing agent need to confirm that tooling surface cleaning is dried.Releasing agent is dipped with non-dust cloth, is carried out on 1 surface of mold uniform
It brushes.In order to keep not holiday, do not ensure certain applied thickness, multipass brushing need to be carried out, is chosen as brushing 2-3 times, be formed
Releasing agent layer 2.Every layer of releasing agent brushing is uniform, such as carries out intersection brushing in multiple directions, it is ensured that brushes uniformly, if there is demoulding
Agent applies excessively, need to be wiped from mold 1 with clean cloth.Wherein, internal layer releasing agent, brushing finish at least dry 20min；Apply
Last complete layer after that is, outermost releasing agent, need to dry at least 40min in air.When brushing releasing agent, it need to ensure scene
Well-ventilated, brushing are finished and are recorded.After the releasing agent drying, the paving release cloth layer 3 on the releasing agent, wherein institute
Being docked by polylith release cloth for demoulding layer of cloth 3 is stated, and butt seam is less than or equal to 1mm, the face of each piece of release cloth
Product is more than or equal to 10cm^2.The tooling line of composite material air intake duct to be prepared is determined on mold 1.
S2), in 1 surface paving of mold successively the first prepreg of paving and the second prepreg, the first stacked preimpregnation is formed
The bed of material 41 and the second prepreg 42.
In the embodiment, need on 1 outer surface surface of mold two layers of prepreg of paving successively, form two prepregs,
That is the first prepreg 41 and the second prepreg 42.As shown in fig. 6, in the step, and include the following steps：(according to following
Fig. 6 under content modification)
S21), first prepreg for waiting for paving and the second prepreg raw material are thawed respectively；
Specifically, it after the raw material of the first prepreg and the second prepreg take out, is placed in clean room and thaws, thawing
Cheng Zhongxu keeps sealing state, prevents it from being contacted with the external world using preceding, and chemical reaction occurs or falls into dust.It is noted when carrying
Meaning is handled with care, and the material that collides with is avoided.
In course of defrosting, clean room temperature is controlled at 18 DEG C -24 DEG C, when material temperature reaches clean room temperature, specifically may be used
Judged not with the method for the apparent temperature difference of environment with being felt with hand, and the evaporated condensation water after hermetic bag outer membrane is dried
It can be used when generation.For thawing time, at 20 DEG C ± 5 DEG C, thawing time >=8h, and finished for cut
Prepreg thawing time >=2 hour.
S22), first prepreg of defrosting and the second prepreg raw material are separately cut；
Specifically, design software Doubly curved surfaces are utilized according to the mathematical model of product, and cuts into corresponding shape, so as to
In paving and form the columnar structured of composite material air intake duct.
S23 on the mold 1, formation stacking is set for paving successively for the first prepreg and the second prepreg after), cutting
The first prepreg 41 and the second prepreg 42 set.
Specifically, the first layer prepreg is epoxy/span/cyanate quartz or glass prepreg, the second layer
Prepreg is epoxy/span/cyanate carbon fiber prepreg.By the first prepreg paving after on the inner surface of former 1, to the layer
Prepreg is encapsulated with vacuum bag (not shown), and carries out vacuumize process, to be compacted to first layer prepreg.Then,
Remove vacuum bag, the paving second layer prepreg on first layer prepreg, and second layer prepreg with vacuum bag (in figure not
Show) encapsulation, and vacuumize process is carried out, to be compacted to second layer prepreg, then remove vacuum bag.
S3 the prepreg), is subjected to curing process.
Specifically, whole be put into autoclave of the mold 1 is subjected to curing process to two prepregs.The solidification
The solidifying pressure of processing is 0.6-0.7MPa, and solidification temperature is 100-220 DEG C, and the time is 2-9 hours.
S4 it), is molded, deviates from the composite material air intake duct green body of preparation.
Mold 1 is molded, the composite material air intake duct idiosome of preparation is deviate from, which has glue thorn etc., make
It is smooth that out-of-flatness must be showed, need to carry out subsequent processing.
S5), the composite material air intake duct billet surface of preparation is polished, the air intake duct is made.
In this step, 180-240 mesh sand paper is selected to beat the outer surface of the composite material air intake duct green body of preparation
It grinds, practice Buddhism or Taoism, keep its surface smooth, to obtain the composite material air intake duct of composite demand.
The present invention also provides a kind of aircraft, wherein the air intake duct of the aircraft uses above-mentioned composite material air intake duct
Preparation method is made.
Composite material air intake duct provided by the invention and preparation method thereof, manufacture craft is simple, and producing efficiency is high.And it is logical
The composite material air intake duct for crossing preparation method preparation can be applied on the aircraft such as dirigible, full in holding structure intensity
In the case that sufficient normal use requires, with the advantages that light weight, difficulty of processing is low, and weatherability is strong, aircraft can improved
Cruising ability.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also include other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
Finally it should be noted that：Obviously, the above embodiment is merely an example for clearly illustrating the present invention, and simultaneously
The non-restriction to embodiment.For those of ordinary skill in the art, it can also do on the basis of the above description
Go out other various forms of variations or variation.There is no necessity and possibility to exhaust all the enbodiments.And thus drawn
The obvious changes or variations that Shen goes out are still in the protection scope of this invention.
Claims (12)
1. a kind of composite material air intake duct preparation method, which is characterized in that described method includes following steps：
A), in die surface paving at least one layer prepreg, at least one prepreg is formed；
B) prepreg, is subjected to curing process；
C) it, is molded, deviates from the composite material air intake duct green body of preparation.
2. composite material air intake duct preparation method according to claim 1, which is characterized in that
The method further includes following steps：
Before the step a), multilayer degumming agent is brushed first on the inner surface of the mold, each layer degumming agent exists
The drying of preset duration is carried out after brushing respectively.
3. composite material air intake duct preparation method according to claim 2, which is characterized in that degumming agent described in internal layer is done
The dry time is more than 20 minutes, and the drying time of degumming agent described in outermost layer is more than 40 minutes.
4. composite material air intake duct preparation method according to claim 2, which is characterized in that
After the releasing agent drying, the paving release cloth layer on the releasing agent,
Wherein, described to demould being docked by polylith release cloth for layer of cloth, and butt seam is less than or equal to 1mm, described in each piece
The area of release cloth is more than or equal to 10cm2。
5. composite material air intake duct preparation method according to claim 1, which is characterized in that in die surface paving first
Prepreg, forms the first prepreg, and first prepreg is epoxy/span/cyanate quartz or glass prepreg.
6. composite material air intake duct preparation method according to claim 5, which is characterized in that in the table of the first prepreg
The second prepreg of face paving, forms the second prepreg, and the second layer prepreg is epoxy/span/cyanate carbon fiber preimpregnation
Material.
7. composite material air intake duct preparation method according to claim 1, which is characterized in that described by the prepreg
Curing process includes：
The mold is integrally put into autoclave, curing process is carried out to prepreg.
8. composite material air intake duct preparation method according to claim 7, which is characterized in that the solidification of the curing process
Pressure is 0.6-0.7MPa, and solidification temperature is 100-220 DEG C, and the time is 2-9 hours.
9. composite material air intake duct preparation method according to claim 1, which is characterized in that
The method further includes following steps：
After the step c), the composite material air intake duct billet surface of preparation is polished, the air intake duct is made.
10. composite material air intake duct preparation method according to claim 9, which is characterized in that
Sand paper used in the composite material air intake duct green body of polishing is 180-240 mesh sand paper.
11. a kind of composite material air intake duct, which is characterized in that it is used such as claim 1-10 any one of them composite materials
Air intake duct prepares preparation method and is made.
12. a kind of aircraft, which is characterized in that the air intake duct of the aircraft uses such as claim 1-10 any one of them
Composite material air intake duct preparation method is made.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710297113.6A CN108790210A (en) | 2017-04-28 | 2017-04-28 | Composite material air intake duct and preparation method thereof and aircraft |
| PCT/CN2018/079811 WO2018196515A1 (en) | 2017-04-28 | 2018-03-21 | Composite material gas intake passage and preparation method therefor, and air vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710297113.6A CN108790210A (en) | 2017-04-28 | 2017-04-28 | Composite material air intake duct and preparation method thereof and aircraft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108790210A true CN108790210A (en) | 2018-11-13 |
Family
ID=63920140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710297113.6A Pending CN108790210A (en) | 2017-04-28 | 2017-04-28 | Composite material air intake duct and preparation method thereof and aircraft |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108790210A (en) |
| WO (1) | WO2018196515A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113290771A (en) * | 2021-07-27 | 2021-08-24 | 宁波曙翔新材料股份有限公司 | Method for manufacturing air inlet channel by using silica gel core layer die |
| CN113427793A (en) * | 2021-05-24 | 2021-09-24 | 航天特种材料及工艺技术研究所 | High-strength high-temperature-resistant composite material air inlet channel and forming method thereof |
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| CN113910637B (en) * | 2021-10-11 | 2023-04-11 | 航天特种材料及工艺技术研究所 | Forming method of composite material complex special-shaped air inlet channel |
| CN113942251B (en) * | 2021-10-19 | 2023-04-25 | 航天特种材料及工艺技术研究所 | Forming process method of wave-absorbing adhesive film of special-shaped cylindrical part with complex structure |
| CN115071163B (en) * | 2022-06-22 | 2024-03-08 | 沈阳飞机工业（集团）有限公司 | Integral co-curing forming process for S-shaped air inlet channel of multi-bulkhead carbon fiber composite material |
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| CN102225623A (en) * | 2011-04-12 | 2011-10-26 | 江西洪都航空工业集团有限责任公司 | Forming method of S-bend fiber reinforced plastic (FRP) air inlet |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113427793A (en) * | 2021-05-24 | 2021-09-24 | 航天特种材料及工艺技术研究所 | High-strength high-temperature-resistant composite material air inlet channel and forming method thereof |
| CN113427793B (en) * | 2021-05-24 | 2022-08-05 | 航天特种材料及工艺技术研究所 | High-strength high-temperature-resistant composite material air inlet channel and forming method thereof |
| CN113290771A (en) * | 2021-07-27 | 2021-08-24 | 宁波曙翔新材料股份有限公司 | Method for manufacturing air inlet channel by using silica gel core layer die |
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