CN206012939U - A kind of stressed-skin construction of small-sized unmanned plane - Google Patents
A kind of stressed-skin construction of small-sized unmanned plane Download PDFInfo
- Publication number
- CN206012939U CN206012939U CN201621011912.XU CN201621011912U CN206012939U CN 206012939 U CN206012939 U CN 206012939U CN 201621011912 U CN201621011912 U CN 201621011912U CN 206012939 U CN206012939 U CN 206012939U
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- China
- Prior art keywords
- stressed
- skin construction
- foam cores
- unmanned plane
- pmi foam
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- 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
- Y02T50/40—Weight reduction
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Abstract
The utility model discloses a kind of stressed-skin construction of small-sized unmanned plane, its integral die shaping includes from outside to inside successively：The first FRP panels of outer layer, the 2nd FRP panels of outer layer, PMI foam cores and internal layer FRP panels, wherein, PMI foam cores form curved surface after hot-forming and solidification.Of the present utility model it is beneficial in that：(1) stressed-skin construction of the present utility model, which substituted for cork wood plate, fiberglass, cellular composite material with PMI foam cores, not only alleviate the weight of stressed-skin construction, and increased the rigidity of stressed-skin construction, is particularly suitable for small-sized unmanned plane and uses；(2) PMI foam cores adopt compression molding using hot-forming, whole stressed-skin construction, not only reduce cost of labor, and formed precision height, deflection are little, and the concordance and surface forming effect of molding has been effectively ensured.
Description
Technical field
This utility model is related to a kind of stressed-skin construction of aircraft, and in particular to a kind of stressed-skin construction of small-sized unmanned plane,
Belong to unmanned air vehicle technique field.
Background technology
At present, the stressed-skin construction for making small-sized unmanned plane is more based on cork wood plate, fiberglass, cellular composite material.
Stressed-skin construction is made using these materials, substantial amounts of artificial operation is not only needed, is lost time, increase manually into
This, and the problems such as precision is low, deflection is big, surface effect is poor during molding, can be run into.
Additionally, the stressed-skin construction low intensity being made, in order to reach certain wing load and safety coefficient, stressed-skin construction
The weight of waste is larger.
Utility model content
For solving the deficiencies in the prior art, the purpose of this utility model is the eyelid covering knot for providing a kind of small-sized unmanned plane
Structure, the stressed-skin construction not only weight saving, and rigidity increase.
In order to realize that above-mentioned target, this utility model are adopted the following technical scheme that：
A kind of stressed-skin construction of small-sized unmanned plane, it is characterised in that integral die shaping, includes from outside to inside successively：
The first FRP panels (1) of outer layer, the 2nd FRP panels (2) of outer layer, PMI foam cores (3) and internal layer FRP panels (4).
The stressed-skin construction of aforesaid small-sized unmanned plane, it is characterised in that aforementioned PMI foam cores (3) are by being hot pressed into
Type, and after solidifying, form curved surface.
Of the present utility model it is beneficial in that：
(1) stressed-skin construction of the present utility model, its substituted for cork wood plate, fiberglass, honeycomb composite wood with PMI foam cores
Material, not only alleviates the weight of stressed-skin construction, and increased the rigidity of stressed-skin construction, and being particularly suitable for small-sized unmanned plane makes
With；
(2) PMI foam cores adopt compression molding using hot-forming, whole stressed-skin construction, not only reduce artificial into
This, and formed precision height, deflection are little, and the concordance and surface forming effect of molding has been effectively ensured.
Description of the drawings
Fig. 1 is the schematic diagram for making PMI foam cores；
Fig. 2 is the schematic diagram for making stressed-skin construction.
The implication of reference in figure：The first FRP panels of 1- outer layers, the 2nd FRP panels of 2- outer layers, 3-PMI foam cores,
4- internal layer FRP panels, 5- hot moulding molds, mould, 7- molding bottom dies, 8- shaping uppers tool under 6- hot mouldings.
Specific embodiment
Make specific introduction to this utility model below in conjunction with the drawings and specific embodiments.
First, PMI foam cores are made
With reference to Fig. 1, by the collective effect of mould 6 under hot moulding mold 5 and hot moulding, will be hot-forming for PMI foams,
Curved surface is formed, PMI foam cores 3 are obtained.
PMI foam cores 3 not only reduce cost of labor, and formed precision height, deflection are little using hot-forming.
PMI foam full name polymethacrylimide foams, are the foam plasticss of a kind of lightweight, closed pore, high intensity, with first
Based on base acrylic acid (MAA) and methacrylonitrile (MAN) copolymer, with good mechanical property, under equal densities, PMI
The compression of foam, stretching, modulus of shearing and intensity are higher；There is higher heat-resistant deforming temperature, can reach 240 DEG C, be current
The reasonable structural foamed plastic of heat resistance.PMI foams are easy to process, can be processed into respectively using thermoforming and mechanical means
Plant complicated shape face.PMI foams adhesive property is good, can use epoxy resin, unsaturated polyester resin, BMI tree
The adhesive such as fat, cyanate ester resin obtain good bonding interface, can be in 190 DEG C and hot pressing pressure tank (0.35-0.75MPa) bar
Realize and panel co-curing under part；There is superior resistance to chemical corrosion also, be mainly used in outside Aero-Space, radar antenna
Cover, CT medical treatment bed boards, wind-powered electricity generation helicopter blade, bullet train, even in construction material, it is most hard under equal density conditions at present
Structural core.
Used as a kind of preferred scheme, the PMI foams used by making PMI foam cores 3 use space flight level PMI bubble
Foam.
2nd, stressed-skin construction is made
Stressed-skin construction integral die shaping, with reference to Fig. 2, includes from outside to inside successively：The first FRP panels 1, outer layer of outer layer
Two FRP panels 2, PMI foam cores 3 and internal layer FRP panels 4, specific manufacture method is as follows：
Step1：The first FRP panels 1 of outer layer and the 2nd FRP panels 2 of outer layer are placed sequentially on molding bottom die 7, so
After smear epoxy prepreg.
Step2：PMI foam cores 3 are placed on the 2nd FRP panels 2 of outer layer, epoxy resin preimpregnation is smeared again
Material.
Step3：Internal layer FRP panels 4 are placed on PMI foam cores 3, and shaping upper is had 8 with mould under molding
Have 7 matched moulds, carry out cured, the demoulding is obtained final product.
The demoulding for convenience, can apply a certain amount of releasing agent in advance on molding bottom die 7 and shaping upper tool 8.
FRP panel full name fibre-reinforced plastics panels, be one kind based on macromolecule epoxy resin, fiberglass or
Carbon fiber etc. is reinforcement, through the composite that combination process is made.Advantage includes：Lightly, corrosion-resistant, aging resistance, absolutely
Edge.Shell and printed circuit board (PCB) mainly for the manufacture of various sports requsites, pipeline, shipbuilding, automobile and electronic product.
Stressed-skin construction of the present utility model, its substituted for cork wood plate, fiberglass, honeycomb composite wood with PMI foam cores 3
Material, not only alleviates the weight of stressed-skin construction, and increased the rigidity of stressed-skin construction, and being particularly suitable for small-sized unmanned plane makes
With.
Further, since PMI foam cores 3 adopt compression molding using hot-forming, whole stressed-skin construction, so not only dropping
Low cost of labor, and formed precision is high, deflection is little, and the concordance and surface forming effect of molding has been effectively ensured.
It should be noted that above-described embodiment does not limit this utility model in any form, all using equivalent or wait
The technical scheme obtained by the mode of effect conversion, all falls within protection domain of the present utility model.
Claims (2)
1. a kind of stressed-skin construction of small-sized unmanned plane, it is characterised in that integral die shaping, includes from outside to inside successively：Outward
The first FRP panels (1) of layer, the 2nd FRP panels (2) of outer layer, PMI foam cores (3) and internal layer FRP panels (4).
2. the stressed-skin construction of small-sized unmanned plane according to claim 1, it is characterised in that PMI foam cores (3)
By hot-forming, and after solidifying, form curved surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621011912.XU CN206012939U (en) | 2016-08-30 | 2016-08-30 | A kind of stressed-skin construction of small-sized unmanned plane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621011912.XU CN206012939U (en) | 2016-08-30 | 2016-08-30 | A kind of stressed-skin construction of small-sized unmanned plane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206012939U true CN206012939U (en) | 2017-03-15 |
Family
ID=58255139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621011912.XU Active CN206012939U (en) | 2016-08-30 | 2016-08-30 | A kind of stressed-skin construction of small-sized unmanned plane |
Country Status (1)
| Country | Link |
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| CN (1) | CN206012939U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106275377A (en) * | 2016-08-30 | 2017-01-04 | 北京奇正数元科技股份有限公司 | The stressed-skin construction of a kind of small-sized unmanned plane and forming method thereof |
-
2016
- 2016-08-30 CN CN201621011912.XU patent/CN206012939U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106275377A (en) * | 2016-08-30 | 2017-01-04 | 北京奇正数元科技股份有限公司 | The stressed-skin construction of a kind of small-sized unmanned plane and forming method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |