CN115743570A - Multistage energy-absorbing anti-crash oil tank supporting structure - Google Patents
Multistage energy-absorbing anti-crash oil tank supporting structure Download PDFInfo
- Publication number
- CN115743570A CN115743570A CN202211460445.9A CN202211460445A CN115743570A CN 115743570 A CN115743570 A CN 115743570A CN 202211460445 A CN202211460445 A CN 202211460445A CN 115743570 A CN115743570 A CN 115743570A
- Authority
- CN
- China
- Prior art keywords
- absorbing
- energy
- oil tank
- crash
- fuel tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
Landscapes
- Vibration Dampers (AREA)
Abstract
The application provides a pair of anti crash oil tank bearing structure of multistage energy-absorbing, bearing structure includes: the oil tank accommodating cavity is used for accommodating a helicopter oil tank; the bottom energy absorption part is arranged at the bottom of the oil tank accommodating cavity; the bottom energy-absorbing component is a multistage energy-absorbing component and is used for absorbing energy of the helicopter in the crash process; the application provides a pair of anti crash oil tank bearing structure of multistage energy-absorbing, combine anti crash design, adopt combined material wholeization design through the more bottom sprag structure with the assembly relation among the oil tank bearing structure, be a combined material co-curing structure with the design of bottom sprag frame roof beam, and form the anti crash structure of multistage energy-absorbing with the thick honeycomb structural connection of covering, thereby realize the anti crash function of high efficiency of oil tank bearing structure, satisfy the high survival rate requirement of modern helicopter.
Description
Technical Field
The application belongs to the technical field of helicopter structures, and particularly relates to a multistage energy-absorbing anti-crash oil tank supporting structure.
Background
A large amount of fuel oil loaded in a helicopter oil tank is one of main load sources of a helicopter, and an oil tank supporting structure is a main load-bearing structure in a helicopter structure. The modern helicopter is complicated in use scene, and under the condition that falls in the low latitude, if the fuel tank breaks, a large amount of fuel leaks, personnel's probability of surviving significantly reduces, consequently must guarantee the completeness of fuel tank, and the anti crash capability of fuel tank bearing structure promotes the vital importance to the survival rate.
The oil tank supporting structure is generally formed by riveting a metal or composite material frame beam structure, the structure needs to be formed by riveting a plurality of parts, connecting pieces are more, the installation is complex, the weight efficiency is low, the energy absorption effect is poor, the anti-crash capability is poor, and the high survival rate requirement of a modern helicopter cannot be met.
Disclosure of Invention
To above-mentioned technical problem, this application provides an anti crash oil tank bearing structure of multistage energy-absorbing, bearing structure includes:
the oil tank accommodating cavity is used for accommodating a helicopter oil tank;
the bottom energy absorption component is arranged at the bottom of the oil tank accommodating cavity; the bottom energy-absorbing component is a multi-stage energy-absorbing component and is used for absorbing energy of the helicopter in the crash process.
Preferably, the bottom energy absorbing member comprises:
the bottom support piece is connected with the oil tank accommodating cavity;
and the bottom covering is connected with the bottom supporting piece through an embedded connecting piece.
Preferably, the bottom support comprises a support frame, a stringer and a floor;
the bottom support is formed by integrally forming the support frame, the longitudinal beam and the floor through an RTM (resin transfer molding) process.
Preferably, the longitudinal beam comprises an S-shaped sandwich energy absorbing structure, and the S-shaped sandwich energy absorbing structure comprises:
the S-shaped sandwich is used for absorbing energy of the helicopter in the crash process;
and the panel covers the S-shaped sandwich.
Preferably, the bottom skin comprises a honeycomb sandwich carbon fiber composite structure, the thickness of the honeycomb sandwich being greater than 50mm.
Preferably, the tank accommodating chamber includes:
the front frame is connected with the supporting frame;
the rear frame is connected with the supporting frame;
a side skin disposed between the front frame and the rear frame.
Preferably, the tank accommodating chamber further includes:
a platform horizontally disposed between the front frame and the rear frame; wherein the platform is provided with an opening;
the baffle, respectively with preceding frame the platform the back frame is connected, forms first oil tank and holds the chamber and the chamber is held to the second oil tank.
Preferably, the fuel tank is disposed in the first fuel tank accommodation chamber and/or the second fuel tank accommodation chamber, and is suspended from the platform.
The beneficial technical effect of this application:
the application provides an anti crash oil tank bearing structure of multistage energy-absorbing, combine anti crash design, through adopting combined material wholeization design with the more bottom sprag structure of assembly relation among the oil tank bearing structure, be a combined material co-curing structure with the design of bottom sprag frame roof beam, and form the anti crash structure of multistage energy-absorbing with the thick honeycomb structural connection of covering, thereby realize the anti crash function of high efficiency of oil tank bearing structure, satisfy the high survival rate requirement of modern helicopter.
Drawings
Fig. 1 is an exploded view of a multistage energy-absorbing crash-resistant fuel tank support structure provided in an embodiment of the present application;
FIG. 2 is a schematic view of an S-shaped sandwich energy absorbing structure provided in the embodiments of the present application;
FIG. 3 is a schematic view of an in-line connector according to an embodiment of the present disclosure;
wherein, 1-a bottom support; 2-front frame; 3-rear frame; 4-a separator; 5-a platform; 6-bottom cover skin; 7-S type sandwich energy absorption structure; 8-in-line connector.
Detailed Description
Referring to fig. 1-3, in the embodiment of the present application, the present application provides a multistage energy-absorbing anti-crash oil tank supporting structure, which combines with an anti-crash design, a bottom supporting structure with more assembly relations in the oil tank supporting structure is designed as a composite material integrated structure, a bottom supporting frame beam is designed as a composite material co-curing structure, a bottom skin is designed as a honeycomb interlayer carbon fiber composite material structure, and is connected with a bottom supporting frame through an embedded insert, an oil tank cabin divides an oil tank into two parts through a partition plate, so as to reduce the weight of a single oil tank, and is connected to a platform in a suspension manner, thereby forming a multistage energy-absorbing anti-crash structure, realizing a high-efficiency anti-crash function of the oil tank supporting structure, and meeting the high survival rate requirement of modern helicopters.
In other embodiments of the present application, the present application provides a multistage energy-absorbing crash-resistant fuel tank support structure, including bottom support 1, front frame 2, rear frame 3, baffle 4, platform 5 and bottom skin 6.
Wherein, the bottom support piece that the oil tank bottom device energy absorption is effectual, bottom support piece 1 forms whole box section structure by 2 bottom half frames, 4 longerons and floor.
Wherein, bottom covering 6 adopts the higher intermediate layer carbon-fibre composite structure of honeycomb thickness, and embedded connecting piece 8 is pre-buried in bottom covering 6, is connected with bottom support piece 1 through embedded connecting piece 8.
And finally, the front frame 2, the rear frame 3, the partition plate 4, the platform 5 and the bottom support member 1 are connected by riveting to form a complete oil tank support structure.
The middle frame beam of the bottom support piece 1 adopts an S-shaped sandwich energy absorption structure 7, the bearing capacity of the supporting oil tank is provided by the panel and the edge strip, and the S-shaped sandwich structure improves the structural rigidity and simultaneously provides high-efficiency crash-resistant energy absorption capacity. Adopt embedded connecting piece 8 to connect the connected mode of bottom covering and bottom support piece, be connected through honeycomb crush district and bottom support piece than the conventionality and increased the honeycomb area, improve anti crash energy-absorbing ability. The oil tank accommodating cavity is divided into two parts by the partition plate 4, so that the weight of a single oil tank is reduced. The oil tank is connected to the platform in a hanging mode through the connecting piece, and energy is not directly transmitted to the oil tank when the oil tank is crashed.
Wherein, through above structure setting, form multistage energy-absorbing anti crash structure, through multistage energy-absorbing, realize the anti crash function of high efficiency.
Particularly, the bottom support member 1 has a plurality of assembling surfaces and high assembling requirements, so that the RTM forming process is adopted for manufacturing, the RTM forming quality is good, the precision of each assembling surface of the oil tank support structure is ensured through a die, the manufacturability is good, the high-precision assembling requirement of the integral anti-crash oil tank support structure is met, the assembling efficiency is improved, the RTM forming process does not need to enter the autoclave for forming, and the manufacturing cost is lower than that of the traditional autoclave forming composite material.
The integral anti-crash oil tank supporting structure is of a composite material structure, metal connecting pieces are omitted, sharp objects are few after energy absorption is broken, the damage probability of the oil tank is small, and therefore the anti-crash capacity is improved.
It should be noted that:
i. the bottom support 1 is of an integrated design: the connecting piece is reduced in the integrated design, the connecting rivet is reduced, the weight of the structure is reduced by about 30% compared with that of a metal structure, the weight of the structure is reduced by about 10% compared with that of a composite material frame beam riveting structure, the assembly surface is reduced, the installation difficulty is reduced, the assembly efficiency is improved, the RTM forming process is adopted for manufacturing, the quality of the assembly surface is improved, the installation requirement of a multi-assembly-surface structure is met, the RTM forming process does not need to enter the autoclave for forming, and the manufacturing cost is lower than that of the traditional autoclave forming composite material.
And ii, the bottom support piece 1 adopts an S-shaped sandwich energy absorption structure: the bearing capacity of the supporting oil tank is provided by the panel and the edge strips, and the S-shaped sandwich improves the structural rigidity and provides high-efficiency crash-resistant energy-absorbing capacity.
A multistage energy-absorbing crash-resistant structure: the bottom support piece 1 is connected with a bottom skin 6 of the honeycomb sandwich carbon fiber composite material structure to form a multistage energy-absorbing and crash-resisting structure, so that the crash-resisting capability is improved.
The integral energy absorption structure is connected with the energy absorption honeycomb in a hidden way: embedded connecting piece 8 of pre-buried in bottom covering 6 is connected through embedded connecting piece 8 and bottom support piece 1, receives the limit riveting than the honeycomb and increases the energy-absorbing honeycomb area, improves anti crash performance.
v. the oil tank accommodating cavity is divided into two parts by the partition plate 4, so that the weight of a single oil tank is reduced.
vi, the oil tank adopts the mode of hanging to connect on the platform through the connecting piece, and the energy is direct not transmitted to the oil tank when crashing.
Compare with traditional oil tank bearing structure, this application has following advantage:
1) The oil tank supporting structure adopts a bottom supporting piece and a bottom skin multistage energy-absorbing anti-crash structure, and the anti-crash efficiency is high;
2) The S-shaped sandwich energy-absorbing structure of the bottom support piece provides high-efficiency crash-resistant energy-absorbing capacity under the condition of not influencing the bearing capacity;
3) The embedded connecting piece embedded in the bottom skin 6 is connected with the peripheral structure, so that the bottom skin does not need to be flattened for connection, the energy-absorbing honeycomb area is increased, and high-efficiency energy absorption is realized;
4) The oil tank accommodating cavity is divided into two parts by the partition plate 4, so that the weight of a single oil tank is reduced;
5) The oil tank is connected to the platform in a hanging mode through a connecting piece, and energy is not directly transferred to the oil tank when the platform crashes;
6) And an integrated design is adopted, so that the assembly efficiency is improved, and the structural weight is reduced.
Claims (8)
1. The utility model provides an anti crash oil tank bearing structure of multistage energy-absorbing which characterized in that, bearing structure includes:
the oil tank accommodating cavity is used for accommodating a helicopter oil tank;
the bottom energy absorption part is arranged at the bottom of the oil tank accommodating cavity; the bottom energy-absorbing component is a multi-stage energy-absorbing component and is used for absorbing energy of the helicopter in the crash process.
2. The multi-stage energy absorbing crash resistant fuel tank support structure of claim 1 wherein said bottom energy absorbing member comprises:
the bottom support piece is connected with the oil tank accommodating cavity;
and the bottom skin is connected with the bottom support piece through an embedded connecting piece.
3. The multi-stage energy absorbing crash resistant fuel tank support structure of claim 2 wherein said bottom support comprises a support frame, a stringer, and a floor;
the bottom support is formed by integrally molding the support frame, the longitudinal beam and the floor through an RTM (resin transfer molding) process.
4. The multi-stage energy-absorbing crash-resistant fuel tank support structure of claim 3, wherein the longitudinal beam comprises an S-shaped sandwich energy-absorbing structure, the S-shaped sandwich energy-absorbing structure comprising:
the S-shaped sandwich is used for absorbing energy of the helicopter in the crash process;
and the panel covers the S-shaped sandwich.
5. The multi-stage energy-absorbing crash-resistant fuel tank support structure of claim 2, wherein said bottom skin comprises a honeycomb sandwich structure having a thickness greater than 50mm.
6. The multi-stage energy-absorbing crash-resistant fuel tank support structure of claim 4, wherein said fuel tank receiving cavity comprises:
the front frame is connected with the supporting frame;
the rear frame is connected with the supporting frame;
a side skin disposed between the front frame and the rear frame.
7. The multi-stage energy-absorbing crash-resistant fuel tank support structure of claim 6, wherein said fuel tank receiving cavity further comprises:
a platform horizontally disposed between the front frame and the rear frame; wherein the platform is provided with an opening;
the baffle, respectively with preceding frame the platform the back frame is connected, forms first oil tank and holds the chamber and the chamber is held to the second oil tank.
8. The multi-stage energy-absorbing crash-resistant fuel tank support structure of claim 7, wherein said fuel tank is disposed within said first fuel tank receiving chamber and/or said second fuel tank receiving chamber and suspended from said platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211460445.9A CN115743570A (en) | 2022-11-17 | 2022-11-17 | Multistage energy-absorbing anti-crash oil tank supporting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211460445.9A CN115743570A (en) | 2022-11-17 | 2022-11-17 | Multistage energy-absorbing anti-crash oil tank supporting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115743570A true CN115743570A (en) | 2023-03-07 |
Family
ID=85334235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211460445.9A Pending CN115743570A (en) | 2022-11-17 | 2022-11-17 | Multistage energy-absorbing anti-crash oil tank supporting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115743570A (en) |
-
2022
- 2022-11-17 CN CN202211460445.9A patent/CN115743570A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2424945C2 (en) | Aircraft door frame | |
| CN102939243B (en) | Aircraft interior lavatory | |
| CN104507806B (en) | Aircraft solid space integrated-type attachment arrangement | |
| JP2000142586A (en) | Pylon support structure of main rotor of helicopter | |
| CN102123908B (en) | Connection of a wing to a fuselage of an airplane | |
| US20160214719A1 (en) | Floor Attachment Assembly and Aircraft Seat | |
| CN115743570A (en) | Multistage energy-absorbing anti-crash oil tank supporting structure | |
| CN104760526A (en) | Seat backrest skeleton of intercity bus | |
| CN207670360U (en) | A kind of application on front crashproof beam structure for automobile and automobile | |
| CN217778786U (en) | Floor structure matched with various power batteries | |
| WO2023016106A1 (en) | Lower vehicle body rear structure and vehicle | |
| CN210882353U (en) | Front floor stiffening beam and car | |
| CN101856782B (en) | Magnetically levitated train driver's cab and manufacture method thereof | |
| CN105905272B (en) | Flat-folded rear pressure bulkhead | |
| CN109131825B (en) | Integral frame structure of front fuselage of airplane | |
| CN210478835U (en) | Commercial car driver's cabin floor longeron | |
| CN112407229A (en) | Unmanned helicopter fuselage force transmission structure assembly | |
| EP3606821B1 (en) | A vehicle seat | |
| CN220263051U (en) | Light composite material rear fuselage structure | |
| CN205469275U (en) | Mounting structure of sub vehicle frame before car | |
| CN218463867U (en) | eVTOL aircraft landing gear connecting structure | |
| CN213035656U (en) | Instrument board for automobile | |
| CN110683077A (en) | Trapezoidal satellite structure suitable for radar antenna and manufacturing method | |
| CN210681136U (en) | Control surface combined wing beam structure | |
| CN216301224U (en) | Front longitudinal beam and automobile body |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |