WO2014156369A1 - 燃料タンク、主翼、航空機胴体、航空機及び移動体 - Google Patents
燃料タンク、主翼、航空機胴体、航空機及び移動体 Download PDFInfo
- Publication number
- WO2014156369A1 WO2014156369A1 PCT/JP2014/053693 JP2014053693W WO2014156369A1 WO 2014156369 A1 WO2014156369 A1 WO 2014156369A1 JP 2014053693 W JP2014053693 W JP 2014053693W WO 2014156369 A1 WO2014156369 A1 WO 2014156369A1
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- WIPO (PCT)
- Prior art keywords
- fuel tank
- structural member
- aircraft
- cfrp
- fuel
- Prior art date
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- 239000002828 fuel tank Substances 0.000 title claims abstract description 47
- 239000004918 carbon fiber reinforced polymer Substances 0.000 claims abstract description 36
- 238000005520 cutting process Methods 0.000 claims abstract description 19
- 239000000446 fuel Substances 0.000 claims abstract description 15
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 12
- 239000004917 carbon fiber Substances 0.000 claims abstract description 12
- 239000011159 matrix material Substances 0.000 claims abstract description 12
- 239000004033 plastic Substances 0.000 claims abstract description 9
- 229920003023 plastic Polymers 0.000 claims abstract description 9
- 239000012779 reinforcing material Substances 0.000 claims abstract description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 238000010030 laminating Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 239000000565 sealant Substances 0.000 description 16
- 238000000034 method Methods 0.000 description 13
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 239000002131 composite material Substances 0.000 description 3
- 239000000295 fuel oil Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052755 nonmetal Inorganic materials 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000003908 quality control method Methods 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000000805 composite resin Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000011208 reinforced composite material Substances 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C3/00—Wings
- B64C3/34—Tanks constructed integrally with wings, e.g. for fuel or water
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D37/00—Arrangements in connection with fuel supply for power plant
- B64D37/02—Tanks
- B64D37/06—Constructional adaptations thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D45/00—Aircraft indicators or protectors not otherwise provided for
- B64D45/02—Lightning protectors; Static dischargers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2439/00—Containers; Receptacles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
- H01M8/04208—Cartridges, cryogenic media or cryogenic reservoirs
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
-
- 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
Definitions
- the present invention relates to a fuel tank, a wing, an aircraft fuselage, an aircraft and a mobile body using a carbon fiber reinforced plastic as a structural member.
- the wing of an aircraft may be used as a fuel tank capable of containing fuel.
- a fuel tank that is integrated with the wing and has a fluid-tight structure that does not leak oil on the wing structure is called an integral tank.
- Integral tanks tend to use composites such as carbon fiber reinforced plastic (CFRP) for weight reduction purposes.
- CFRP carbon fiber reinforced plastic
- CFRP carbon fibers are used as a reinforcing material, and a synthetic resin is used as a matrix.
- Patent Document 1 is an invention of a three-dimensional fiber-reinforced resin composite material, and in order to impart conductivity to a fiber-reinforced resin composite material without impairing productivity, the ear thread has higher conductivity than the in-plane direction thread. Techniques are disclosed that are comprised of conductive materials. Patent Document 2 discloses the invention of a prepreg and a carbon fiber reinforced composite material, and discloses a technique of containing conductive particles or fibers for the purpose of combining excellent impact resistance and conductivity. There is. Further, Patent Document 3 is an invention of an improved composite material, which has conductivity and is dispersed in a polymer resin for the purpose of causing little or no increase in weight as compared with a standard composite material. Techniques for including sexual particles are disclosed.
- JP 2007-301838 A JP, 2010-280904, A JP, 2011-168792, A
- the subject mentioned above arises not only in the integral tank integrated with the main wing of an aircraft, but arises also in the container of the fuel cell in which a fuel distribute
- the container of a fuel cell is also included in a fuel tank and demonstrated.
- the same problem arises in a mobile body such as a fuselage of an aircraft having a fuel tank and an automobile equipped with a fuel tank other than the aircraft.
- the present invention has been made in view of such circumstances, and it is possible to reduce the working time and cost in the manufacturing process and to prevent an increase in weight, a fuel tank, a wing, an aircraft fuselage, an aircraft and a mobile Intended to provide the body.
- a fuel tank according to a first aspect of the present invention includes a structural member using a carbon fiber reinforced plastic having a reinforcing material containing carbon fiber and a matrix containing plastic, and the structural member is the carbon fiber reinforced material
- a conductive sheet is laminated and molded between plastic prepregs.
- the structural member of the fuel tank is made of carbon fiber reinforced plastic, and is formed after the conductive sheet is laminated between the prepregs of the carbon fiber reinforced plastic at the time of manufacture.
- the structure has high conductivity as compared to the carbon fiber reinforced plastic in which the conductive sheet is not laminated. If conductivity is not imparted and the end of the structural member is not treated with a sealant etc., there is a risk that sparks may occur between the reinforcements at the end if lightning current flows through the end during lightning strike.
- the structural member of the present invention since the conductive sheets are stacked to impart conductivity, the conduction in the structural member is ensured, and the generation of sparks at the end of the structural member can be prevented.
- the cutting surface of the structural member formed by cutting the structural member may be exposed to the inside where the fuel is accommodated.
- the structural member even if the end of the structural member is a cut surface, and the cut surface is exposed to the inside where the fuel is stored, the structural member maintains conductivity, so the structural member Internal conduction is ensured, and generation of sparks at the end of the structural member can be prevented.
- the reinforcing material or the matrix may be provided with conductivity.
- the conductivity is further secured in the structural member.
- a main wing according to a second aspect of the present invention has the above-described fuel tank as a structural body, and an aircraft fuselage according to the third aspect of the present invention includes the above-described fuel tank.
- An aircraft according to a fourth aspect of the present invention comprises the above-described wing or aircraft fuselage.
- the 5th aspect mobile body based on this invention is equipped with said fuel tank.
- the conductive sheets are stacked to impart conductivity to the structural member, the conduction inside the structural member is ensured, and the occurrence of sparks between the reinforcing materials at the end portions of the structural member can be prevented. Since it is not necessary to separately apply a sealant or the like at the end of the structural member, the working time and cost in the manufacturing process can be reduced, and an increase in weight can be prevented.
- FIG. 4 is a partial longitudinal sectional view showing an upper skin and a rib according to an embodiment of the present invention, which is a sectional view taken along line IV-IV of FIG. 2; It is a top view which shows the flange of the rib which concerns on one Embodiment of this invention. It is a top view which shows the flange of the conventional rib. It is a graph which shows relative spark generation current [%] in each test object.
- the main wing 1 includes an upper skin 3, a lower skin 5, a front spar 7, a rear spar 9, and a plurality of ribs 11 and the like.
- the upper skin 3 and the lower skin 5 are thin plates that constitute the outer shape of the main wing 1 and also serve as an aerodynamic surface.
- the upper skin 3 and the lower skin 5 together with the front spar 7, the rear spar 9 and the stringers (not shown) receive a part of a tensile load or a compressive load acting on the main wing 1.
- the front spar 7 and the rear spar 9 are structural members that extend in the wing length direction of the main wing 1 as shown in FIG. 1 and are disposed between the upper skin 3 and the lower skin 5.
- the plurality of stringers are auxiliary members that extend in the wing length direction of the main wing 1 on the inner surface of the upper skin 3 or the lower skin 5 and are disposed between the front spar 7 and the rear spar 9.
- the rib 11 is a structural member provided in the wing width direction of the main wing 1 as shown in FIG. 1 and is disposed between the upper skin 3 and the lower skin 5. That is, the rib 11 is a structural member extending in a direction substantially orthogonal to the front spar 7 and the rear spar 9, and is a plate-like member formed in the longitudinal cross-sectional shape of the main wing 1. As shown in FIG. 1 and FIG. 2, a plurality of openings 14 are formed in the rib 11 in the longitudinal direction.
- a portion surrounded by the front spar 7, the rear spar 9, the upper skin 3 and the lower skin 5 is used as a fuel tank 13 for containing fuel.
- the fuel tank 13 has a container structure itself as a container, and is called an integral tank.
- the front spar 7, the rear spar 9, the upper skin 3, the lower skin 5 and the ribs 11 are also structural members of the fuel tank 13.
- the fuel tank 13 has a liquid-tight structure in which fuel does not leak to the outside.
- a fuel pipe (not shown) for supplying fuel to the fuel tank 13, a plurality of fuel oil meters (not shown) for detecting the amount of fuel oil, and a fuel oil meter Wiring (not shown) etc. is installed.
- CFRP Carbon fiber reinforced plastic
- the CFRP 15 is composed of a reinforcing material containing carbon fibers, a matrix containing a plastic, and the like.
- the matrix may not be provided with conductivity, or may be provided with conductivity. When conductivity is imparted to the matrix, CFRP 15 itself also has conductivity.
- the matrix includes, for example, a plastic such as a thermosetting resin such as unsaturated polyester and epoxy resin.
- a plastic such as a thermosetting resin
- various techniques of imparting conductivity to a plastic such as a thermosetting resin can be applied, and the detailed description will be omitted herein.
- a method of imparting conductivity to the matrix there are, for example, a method of incorporating conductive particles or fibers in a plastic, a method of imparting conductivity to a plastic itself, and the like.
- the conductive sheet 17 is a sheet-like member having a low electrical resistance.
- the conductive sheet 17 may be made of metal or nonmetal.
- the metal conductive sheet 17 is, for example, copper or titanium, and is in the form of a uniform sheet having no opening, a punching metal having an opening, or a mesh.
- the nonmetallic conductive sheet 17 is made of, for example, carbon fiber, and includes a non-woven fabric or a plain weave such as gauze. In addition, carbon fibers may use carbon nanotubes.
- the conductive sheet 17 is connected to a spark location provided outside the structural member, that is, a location where the lightning current finally flows.
- FIG. 3 shows the rib 11, the same applies to other members.
- all of the front spar 7, the rear spar 9, the upper skin 3, the lower skin 5 and the ribs 11 may not be formed by a structural member having CFRP 15, and metal such as aluminum alloy partially And may be formed by
- a cutting surface formed by cutting is exposed inside the fuel tank 13 in which the fuel is stored.
- the rib 11 includes the flange 11A and the web 11B or the like, the cutting surface 11a is exposed to the inside of the fuel tank 13 at the end of the flange 11A.
- the conductive sheet 17 having high conductivity is inserted into the structural member having the CFRP 15, as shown in FIG.
- the lightning current C flows from P to the structural member
- the lightning current C also flows to the conductive sheet 17 of the structural member.
- sparks are less likely to be generated on the cutting surface 11 a of the structural member.
- the lightning current C from the lightning strike point P is a CFRP part
- sparks D may be generated between the reinforcements at the end portions of the reinforcements.
- a method of applying a sealant 12 or the like to the surface or cutting surface 11a of the CFRP part and confining the generated current inside is adopted as a countermeasure against the spark.
- the application process of the sealant 12 increases the working time and cost of the manufacturing process of the fuel tank 13.
- the weight of the wing 1 is increased by the applied sealant 12.
- the conductive sheet 17 having high conductivity is inserted into the structural member having the CFRP 15, the cutting surface 11a is exposed inside the fuel tank 13. Also, generation of sparks on the cutting surface 11a of the structural member can be prevented. As a result, it is possible to eliminate the need for the sealant to be applied to the surface of the structural member or the cutting surface 11a, and to simplify the method of applying the sealant. Therefore, the working time and the cost can be reduced in the manufacturing process of the fuel tank and the quality control of the sealant application. In addition, the weight of the sealant can be reduced.
- a test body is produced about each of an embodiment of the present invention, and a conventional example, and the result of having conducted a lightning-proof test is explained.
- the structural member including the CFRP in which the conductive sheet 17 having conductivity is laminated (in the present embodiment) and the CFRP in which the conductive sheet 17 is not laminated (conventional)
- the test method of the lightning resistance test was according to the description of Conducted Current Test of Aircraft Lightning Test Methods (ARP 5416) of SAE international.
- the large current waveform applied to the test body is a component A waveform of the lightning simulation current specified in the ARP 5412A.
- FIG. 7 shows relative spark generation current [%] in each test body.
- the spark generation current value of each test body when the spark generation current value of CFRP in which the conductive sheet is not laminated is 100% is shown as a ratio.
- the relative spark generation current is almost the same value regardless of whether the number of sheets to be laminated is one or four, and at least one conductive sheet 17 is laminated on CFRP. It was confirmed that the generation of sparks due to lightning current at the time of lightning strike can be suppressed by
- the present invention is not limited to this example.
- the present invention can be applied to a structural member used for a container (fuel tank) of a fuel cell through which fuel flows.
- the present invention is also applicable to a structural member of a fuel tank installed in a fuselage of an aircraft, and a structural member of a fuel tank mounted on a movable body such as an automobile other than the aircraft.
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Fuel Cell (AREA)
- Moulding By Coating Moulds (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
Description
また、シーラントの厚さが発生したスパークの閉じ込め能力に直結するため、塗布時のシーラント厚さに対する品質管理要求が厳しくなる。これにより、品質管理に掛かる時間やコストも増加する。
すなわち、本発明の第1態様に係る燃料タンクは、炭素繊維を含む補強材と、プラスチックを含むマトリックスとを有する炭素繊維強化プラスチックを用いた構造部材を備え、前記構造部材は、前記炭素繊維強化プラスチックのプリプレグ間に導電性シートが積層され成形されている。
これらの構成によれば、燃料タンクの構造部材は、導電性が確保されているため、構造部材内部の導通が確保され、構造部材の端部におけるスパークの発生を防止できる。
まず、本実施形態に係る航空機の主翼1の構成について説明する。
主翼1は、図1及び図2に示すように、上側スキン3と、下側スキン5と、前側スパー7と、後側スパー9と、複数のリブ11などを備える。
上側スキン3及び下側スキン5は、主翼1の外形を構成し、空力面も兼ねる薄板である。上側スキン3及び下側スキン5は、前側スパー7、後側スパー9及びストリンガ(図示せず。)と共に主翼1に作用する引っ張り荷重や、圧縮荷重の一部を受け持つ。
燃料タンク13の構造部材、すなわち、前側スパー7、後側スパー9、上側スキン3、下側スキン5及びリブ11は、炭素繊維強化プラスチック(CFRP)が用いられる。そして、燃料タンク13に適用される本実施形態の構造部材は、製造時において、CFRP15のプリプレグ間に導電性シート17が積層されて成形される。したがって、構造部材は、図3に示すように、CFRP15と導電性シート17による積層構造を有する。
なお、導電性シート17には、CFRP15の炭素と接触することによって電池を形成する金属、例えば、ニッケルやアルミニウムを用いることは望ましくない。
本試験では、導電性を有する導電性シート17が積層されたCFRPを備える構造部材(本実施形態)と、導電性シート17が積層されていないCFRP(従来)とにおいて、試験体に大電流波形を印加してスパークが発生する電流値の違いを比較した。
耐雷試験の試験方法は、SAE internationalのAircraft Lightning Test Methods(ARP5416)のConducted Current Testの記載に従った。試験体に印加した大電流波形は、ARP5412Aに規定される雷模擬電流のコンポーネントA波形である。
試験結果によれば、導電性シート17が非金属製、金属製のいずれの場合でも、相対スパーク発生電流が高くなり、導電性シート17が積層されていないCFRPに比べて、着雷時の雷電流によるスパークの発生を抑制できることが確認された。
導電性シート17が非金属製の場合、積層するシートの枚数が1枚、4枚のいずれの場合でも、相対スパーク発生電流がほぼ同値であり、少なくとも1枚の導電性シート17がCFRPに積層されることによって、着雷時の雷電流によるスパークの発生を抑制できることが確認された。
3 上側スキン
5 下側スキン
7 前側スパー
9 後側スパー
11 リブ
11a 切削面
11A フランジ
11B ウェブ
12 シーラント
13 燃料タンク
15 CFRP
17 導電性シート
Claims (7)
- 炭素繊維を含む補強材と、プラスチックを含むマトリックスとを有する炭素繊維強化プラスチックを用いた構造部材を備え、
前記構造部材は、前記炭素繊維強化プラスチックのプリプレグ間に導電性シートが積層され成形されている燃料タンク。 - 燃料が収容される内部に、前記構造部材が切削されて形成された前記構造部材の切削面が露出している請求項1に記載の燃料タンク。
- 前記補強材又は前記マトリックスは、導電性が付与されている請求項1又は2に記載の燃料タンク。
- 請求項1から3のいずれか1項に記載の燃料タンクを構造体とする主翼。
- 請求項1から3のいずれか1項に記載の燃料タンクを備える航空機胴体。
- 請求項4に記載の主翼、又は、請求項5に記載の航空機胴体を備える航空機。
- 請求項1から3のいずれか1項に記載の燃料タンクを備える移動体。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2015140423A RU2628291C2 (ru) | 2013-03-26 | 2014-02-18 | Топливный бак, основные крылья, корпус летательного аппарата, летательный аппарат и транспортное средство |
CA2907817A CA2907817C (en) | 2013-03-26 | 2014-02-18 | Fuel tank, main wings, aircraft fuselage, aircraft, and moving body |
US14/779,465 US10046849B2 (en) | 2013-03-26 | 2014-02-18 | Fuel tank, main wings, aircraft fuselage, aircraft, and moving body |
BR112015024429A BR112015024429A8 (pt) | 2013-03-26 | 2014-02-18 | tanque de combustível, asas principais, fuselagem de aeronave, aeronave e corpo móvel |
CN201480018314.2A CN105102320B (zh) | 2013-03-26 | 2014-02-18 | 燃油箱、主翼、航空机机身、航空机以及移动体 |
EP14774804.0A EP2979976B1 (en) | 2013-03-26 | 2014-02-18 | Fuel tank, main wings, aircraft fuselage, aircraft, and moving body |
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JP2013064443A JP6071686B2 (ja) | 2013-03-26 | 2013-03-26 | 燃料タンク、主翼、航空機胴体、航空機及び移動体 |
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US (1) | US10046849B2 (ja) |
EP (1) | EP2979976B1 (ja) |
JP (1) | JP6071686B2 (ja) |
CN (1) | CN105102320B (ja) |
BR (1) | BR112015024429A8 (ja) |
CA (1) | CA2907817C (ja) |
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JP6113544B2 (ja) * | 2013-03-26 | 2017-04-12 | 三菱重工業株式会社 | 燃料タンク、主翼、航空機胴体、航空機及び移動体 |
JP6778221B2 (ja) * | 2018-01-15 | 2020-10-28 | 株式会社Subaru | 締結構造 |
CN111070722B (zh) * | 2018-10-19 | 2021-10-22 | 哈尔滨工业大学 | 一种基于隔热和绝缘机理的雷电防护复合材料的制备方法 |
CN109305328B (zh) * | 2018-11-12 | 2024-01-16 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | 一种翼盒及飞机 |
US11530633B2 (en) * | 2019-12-05 | 2022-12-20 | Rolls-Royce Corporation | Efficient grounding of electrical connection with challenging bonding path |
KR102638697B1 (ko) * | 2022-03-22 | 2024-02-20 | 도레이첨단소재 주식회사 | 무인항공기용 섬유강화플라스틱 프로펠러 및 이의 제조방법 |
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Also Published As
Publication number | Publication date |
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RU2015140423A (ru) | 2017-05-02 |
JP6071686B2 (ja) | 2017-02-01 |
EP2979976B1 (en) | 2019-04-10 |
CA2907817A1 (en) | 2014-10-02 |
CA2907817C (en) | 2018-07-03 |
CN105102320B (zh) | 2018-06-08 |
US10046849B2 (en) | 2018-08-14 |
BR112015024429A8 (pt) | 2021-07-20 |
JP2014189069A (ja) | 2014-10-06 |
CN105102320A (zh) | 2015-11-25 |
EP2979976A4 (en) | 2016-09-28 |
US20160031545A1 (en) | 2016-02-04 |
EP2979976A1 (en) | 2016-02-03 |
RU2628291C2 (ru) | 2017-08-15 |
BR112015024429A2 (pt) | 2017-07-18 |
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