FR2755662A1 - System for fixing of supple fuel tank to support structure, used e.g. in aeroplanes, helicopters, or armoured cars - Google Patents

System for fixing of supple fuel tank to support structure, used e.g. in aeroplanes, helicopters, or armoured cars Download PDF

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Publication number
FR2755662A1
FR2755662A1 FR9613860A FR9613860A FR2755662A1 FR 2755662 A1 FR2755662 A1 FR 2755662A1 FR 9613860 A FR9613860 A FR 9613860A FR 9613860 A FR9613860 A FR 9613860A FR 2755662 A1 FR2755662 A1 FR 2755662A1
Authority
FR
France
Prior art keywords
tank
fixing
flexible
support structure
wall
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.)
Granted
Application number
FR9613860A
Other languages
French (fr)
Other versions
FR2755662B1 (en
Inventor
Francis Averous
Jean Claude Bac
Christophe Mendes
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Safran Aerosystems SAS
Original Assignee
Aerazur SAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Aerazur SAS filed Critical Aerazur SAS
Priority to FR9613860A priority Critical patent/FR2755662B1/en
Publication of FR2755662A1 publication Critical patent/FR2755662A1/en
Application granted granted Critical
Publication of FR2755662B1 publication Critical patent/FR2755662B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/02—Wall construction
    • B65D90/04—Linings
    • B65D90/041—Rigid liners fixed to the container
    • B65D90/042—Rigid liners fixed to the container fixed pointwise or linewise
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/02—Wall construction
    • B65D90/04—Linings
    • B65D90/041—Rigid liners fixed to the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/02—Wall construction
    • B65D90/04—Linings
    • B65D90/046—Flexible liners, e.g. loosely positioned in the container
    • B65D90/048—Flexible liners, e.g. loosely positioned in the container comprising bracing straps

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

The system comprises anti-corrosion fixing components (3) which fix the tank walls to two opposite walls (10,11) of the structure. Flexible straps (9) located inside the tank each connect the assembly to a fixing component fixed to the opposite wall of the structure enabling taking up the forces applied to the walls. Each fixing component is glued to the tank internal wall and has, inside the tank, a guide part for passage of the strap. The strap is extended outside the tank by a threaded part passing through the adjacent wall of the structure and fixed by a nut (6).

Description

La présente invention concerne la fixation d'un réservoir souple, dit réservoir "anti-crash", à la structure de support d'un véhicule, en particulier d'un aéronef tel qu'un avion ou un hélicoptère, ou d'un véhicule roulant tel qu'un véhicule blindé. The present invention relates to the attachment of a flexible tank, known as an "anti-crash" tank, to the support structure of a vehicle, in particular of an aircraft such as an airplane or a helicopter, or of a vehicle. rolling like an armored vehicle.

Les dispositifs actuels de fixation des réservoirs souples assurent la suspension du réservoir dans la structure de l'aéronef, le réservoir souple épousant la forme de la cellule de support en étant maintenu par un système auto-agrippant, par un laçage ou par un système mécanique de fixation. Le réservoir souple, une fois rempli, est alors maintenu en forme par les faces de la structure de support et par son système de fixation. The current flexible tank fixing devices ensure the suspension of the tank in the aircraft structure, the flexible tank conforming to the shape of the support cell while being held by a hook-and-loop system, by lacing or by a mechanical system. of fixation. The flexible tank, once filled, is then held in shape by the faces of the support structure and by its fixing system.

En cas de choc violent, le réservoir souple rempli de carburant se déforme de façon que sa charge vienne se répartir vers le centre, selon une forme dite "de goutte d'eau", la déformation du fond du réservoir souple entraînant alors la déformation du plancher de la structure de support, en pouvant aller jusqu'à la rupture de celui-ci. In the event of a violent impact, the flexible tank filled with fuel deforms so that its load is distributed towards the center, in a form called "water drop", the deformation of the bottom of the flexible tank then causing the deformation of the floor of the support structure, being able to go as far as breaking it.

La présente invention a pour objet de remédier aux inconvénients mentionnés ci-dessus des dispositifs actuels de fixation des réservoirs souples sur leur structure de support, et elle propose à cet effet un dispositif de fixation qui est conçu pour reprendre en structure les efforts mécaniques appliqués au réservoir souple, en particulier en cas de choc violent. The object of the present invention is to remedy the drawbacks mentioned above of the current devices for fixing flexible tanks to their support structure, and it proposes for this purpose a fixing device which is designed to take up the structure of the mechanical forces applied to the flexible tank, especially in the event of a violent impact.

Selon l'invention, le dispositif de fixation d'un réservoir souple dans la structure de support d'un aéronef comprend des moyens de fixation mécanique des panneaux supérieur et inférieur du réservoir souple aux parois supérieure et inférieure respectivement de la structure de support, et des organes souples de liaison reliant entre eux les moyens de fixation mécanique supérieurs et les moyens de fixation mécanique inférieurs, les dits organes souples de liaison reprenant en cas de choc violent les efforts mécaniques appliqués au fond du réservoir et au plancher de la structure, de façon à absorber ces efforts et à protéger ainsi de la rupture la partie inférieure de la structure. According to the invention, the device for fixing a flexible tank in the support structure of an aircraft comprises means for mechanically fixing the upper and lower panels of the flexible tank to the upper and lower walls respectively of the support structure, and flexible connecting members interconnecting the upper mechanical fixing means and the lower mechanical fixing means, the said flexible connecting members taking up, in the event of a violent impact, the mechanical forces applied to the bottom of the tank and to the floor of the structure, so as to absorb these forces and thus protect the lower part of the structure from breaking.

Selon une forme de réalisation préférée de l'invention, chaque moyen de fixation mécanique comprend une partie en forme de plot qui est disposée à l'intérieur du réservoir souple et dont la partie en contact avec la paroi du réservoir est collée à celle-ci, du dit moyen de fixation faisant saillie au moins un élément fileté conçu pour se fixer par vissage à la paroi en regard de la structure de support. La partie du moyen de fixation mécanique logée à l'intérieur du réservoir présente un passant pour le passage d'un lien souple, tel qu'une sangle en polyamide ou en "KEVLAR" (marque déposée) par exemple, destiné à relier ce moyen de fixation à celui en regard coopérant avec les parois opposées du réservoir et de la structure. According to a preferred embodiment of the invention, each mechanical fastening means comprises a stud-shaped part which is arranged inside the flexible tank and the part of which in contact with the wall of the tank is glued to it of said fixing means projecting at least one threaded element designed to be fixed by screwing to the wall opposite the support structure. The part of the mechanical fixing means housed inside the tank has a pass-through for the passage of a flexible link, such as a polyamide or "KEVLAR" strap (registered trademark) for example, intended to connect this means fixing to the opposite one cooperating with the opposite walls of the tank and of the structure.

Cette disposition permet un renforcement de la structure par le biais de la fixation du réservoir. This arrangement allows a strengthening of the structure by means of the fixing of the reservoir.

Elle permet aussi de conserver la géométrie de la structure et de protéger ainsi les réservoirs de carburant et aussi la structure.It also makes it possible to preserve the geometry of the structure and thus protect the fuel tanks and also the structure.

Pour bien faire comprendre le dispositif selon l'invention, on en décrira ci-après, à titre d'exemple sans caractère limitatif, une forme d'exécution préférée en référence au dessin schématique annexé dans lequel
la figure 1 est une vue en perspective d'une structure de support et des moyens selon l'invention de fixation d'un réservoir souple à cette structure ; et
la figure 2 est une vue en élévation, à plus grande échelle, d'un élément de fixation du réservoir souple à la structure de support.To clearly understand the device according to the invention, there will be described below, by way of example without limitation, a preferred embodiment with reference to the accompanying schematic drawing in which
Figure 1 is a perspective view of a support structure and means according to the invention for fixing a flexible tank to this structure; and
Figure 2 is an elevational view, on a larger scale, of an element for fixing the flexible tank to the support structure.

En référence à la figure 1 on a représenté en 1 une structure de support, en forme de caisson parallélépipédique, intégrée à un aéronef. A l'intérieur de la structure 1 est logé un réservoir souple 2 destiné, lorsqu'il est rempli par exemple de carburant, à épouser la forme de la structure 1. Referring to FIG. 1, a support structure is shown at 1, in the form of a parallelepiped box, integrated into an aircraft. Inside the structure 1 is housed a flexible tank 2 intended, when it is filled, for example, with fuel, to match the shape of the structure 1.

La fixation du réservoir 2 à la structure 1 est réalisée au moyen de plusieurs éléments de fixation 3 disposés à l'intérieur du réservoir souple 2. Comme on le voit en particulier à la figure 2, chaque élément de fixation 3 comporte une base 4, par exemple en forme de disque, destinée à se fixer par collage à la paroi intérieure du réservoir 2. De la base 4 fait saillie une tige filetée 5 qui traverse de façon étanche la paroi du réservoir 2 puis la face en regard de la structure 1, pour être immobilisée par serrage d'un écrou 6. The attachment of the reservoir 2 to the structure 1 is carried out by means of several attachment elements 3 arranged inside the flexible reservoir 2. As can be seen in particular in FIG. 2, each attachment element 3 comprises a base 4, for example in the form of a disc, intended to be fixed by gluing to the interior wall of the reservoir 2. From the base 4 projects a threaded rod 5 which passes tightly through the wall of the reservoir 2 and then the opposite face of the structure 1 , to be immobilized by tightening a nut 6.

En direction inverse de la tige filetée 5, la base 4 se prolonge à l'intérieur du réservoir 2 par un corps aplati 7 percé, à son extrémité opposée, par une fente 8. Dans cette fente 8 passe une sangle 9 (voir figure 1) qui relie ensemble deux éléments de fixation 3 disposés en regard l'un de l'autre et coopérant l'un avec la paroi supérieure 10 de la structure 1 et l'autre avec la paroi inférieure 11 de cette structure. In the opposite direction of the threaded rod 5, the base 4 is extended inside the tank 2 by a flattened body 7 pierced, at its opposite end, by a slot 8. In this slot 8 passes a strap 9 (see Figure 1 ) which connects two fastening elements 3 arranged opposite one another and cooperating one with the upper wall 10 of the structure 1 and the other with the lower wall 11 of this structure.

Les sangles 9, qui relient ainsi un élément de fixation supérieur 3 à un élément de fixation inférieur, agissent à la façon de bretelles en reprenant les efforts mécaniques appliqués à la paroi inférieure 11 de la structure 1, permettant ainsi en cas de choc violent d'éviter une rupture de cette paroi inférieure 11. The straps 9, which thus connect an upper fastening element 3 to a lower fastening element, act as straps by taking up the mechanical forces applied to the lower wall 11 of the structure 1, thus making it possible in the event of a violent impact. '' avoid a rupture of this lower wall 11.

Les sangles 9, qui se trouvent à l'intérieur du réservoir 2, sont avantageusement réalisées en une matière synthétique d'une grande résistance mécanique, par exemple en polyamide ou en Kevlar (marque déposée). The straps 9, which are located inside the tank 2, are advantageously made of a synthetic material of high mechanical strength, for example polyamide or Kevlar (registered trademark).

Les parties 4 et 7 de chaque élément de fixation 3, qui sont aussi placées à l'intérieur du réservoir 2, sont en une matière résistant à la corrosion. The parts 4 and 7 of each fastening element 3, which are also placed inside the tank 2, are made of a corrosion-resistant material.

On comprendra que la description ci-dessus a été donnée à simple titre d'exemple, sans caractère limitatif, et que des modifications ou des adjonctions constructives pourraient y être apportées sans sortir du cadre de l'invention.  It will be understood that the above description has been given by way of example, without limitation, and that constructive modifications or additions could be made thereto without departing from the scope of the invention.

Claims (5)

REVENDICATIONS 1. Dispositif de fixation d'un réservoir souple à une structure de support, comprenant des éléments de fixation (3) qui assurent la fixation de la paroi du réservoir (2) à l'une ou l'autre de deux parois opposées (10,11) de la structure de support (1), caractérisé par des organes souples de liaison (9) disposés à l'intérieur du réservoir (2) et chacun reliant ensemble un élément de fixation (3) solidaire de l'une des parois (10) de la structure (1) à un élément de fixation (3) solidaire de la paroi opposée (11) de cette structure, en permettant une reprise des efforts mécaniques appliqués à l'une de ces parois (10,11). 1. Device for fixing a flexible tank to a support structure, comprising fixing elements (3) which secure the wall of the tank (2) to one or the other of two opposite walls (10 , 11) of the support structure (1), characterized by flexible connecting members (9) arranged inside the tank (2) and each connecting together a fixing element (3) integral with one of the walls (10) of the structure (1) to a fastening element (3) integral with the opposite wall (11) of this structure, allowing a resumption of the mechanical forces applied to one of these walls (10,11). 2. Dispositif de fixation selon la revendication 1, caractérisé en ce que les dits organes souples de liaison (9) sont constitués par des sangles. 2. Fastening device according to claim 1, characterized in that said flexible connecting members (9) are constituted by straps. 3. Dispositif selon la revneidation 2, caractérisé en ce que les sangles (9) sont en un matériau d'une grande résistance mécanique, par exemple en polyamide ou en Kevlar (marque déposée). 3. Device according to revneidation 2, characterized in that the straps (9) are made of a material of high mechanical strength, for example polyamide or Kevlar (registered trademark). 4. Dispositif de fixation selon l'une quelconque des revendications précédentes, caractérisé en ce que chaque élément de fixation (3) est fixé par collage à la paroi intérieure du réservoir souple (2) et présente à l'intérieur du réservoir (2) une partie de guidage (7,8) pour le passage de l'organe de liaison (9), alors qu'il se prolonge à l'extérieur du réservoir souple (2) par au-moins un élément fileté (5) traversant la paroi adjacente (10,11) de la structure (1) et solidarisé à celle-ci par un écrou (6). 4. Fastening device according to any one of the preceding claims, characterized in that each fastening element (3) is fixed by gluing to the inner wall of the flexible tank (2) and present inside the tank (2) a guide part (7,8) for the passage of the connecting member (9), while it extends outside the flexible tank (2) by at least one threaded element (5) passing through the adjacent wall (10,11) of the structure (1) and secured thereto by a nut (6). 5. Dispositif de fixation selon la revendication 4, caractérisé en ce que la partie de l'élément de fixation (3) se trouvant à l'intérieur du réservoir souple (2) est en un matériau résistant à la corrosion.  5. Fastening device according to claim 4, characterized in that the part of the fastening element (3) located inside the flexible tank (2) is made of a corrosion-resistant material.
FR9613860A 1996-11-14 1996-11-14 DEVICE FOR FIXING A FLEXIBLE TANK TO A SUPPORT STRUCTURE Expired - Lifetime FR2755662B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9613860A FR2755662B1 (en) 1996-11-14 1996-11-14 DEVICE FOR FIXING A FLEXIBLE TANK TO A SUPPORT STRUCTURE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9613860A FR2755662B1 (en) 1996-11-14 1996-11-14 DEVICE FOR FIXING A FLEXIBLE TANK TO A SUPPORT STRUCTURE

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FR2755662A1 true FR2755662A1 (en) 1998-05-15
FR2755662B1 FR2755662B1 (en) 1999-02-12

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014121381A1 (en) * 2013-02-11 2014-08-14 Newterra Ltd. Support arrangements for water treatment tank
WO2014121380A1 (en) * 2013-02-11 2014-08-14 Newterra Ltd. Converted intermodal container for use as a water processing tank
FR3044078A1 (en) * 2015-11-24 2017-05-26 Brgm HEATED, HIGH TEMPERATURE, HIGH-PRESSURE GEOTHERMAL EXCHANGER FOR MAGMATIC OR METAMORPHIC FORMATION

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB561819A (en) * 1943-01-21 1944-06-06 Allen Neil Fabric Gas Containe Improvements in flexible containers for transporting gas
US2978004A (en) * 1959-06-11 1961-04-04 Donald F Smith Swivel closure for rotatable containers
US4966310A (en) * 1988-12-01 1990-10-30 Hawkins Gerald P Collapsible storage container and method for storing matter
US5073035A (en) * 1991-05-09 1991-12-17 Williams Kenneth J Bulk carrying bag
US5421476A (en) * 1991-07-15 1995-06-06 Matias; Carlos J. D. Modified flexible insert for a generally rectangular container

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB561819A (en) * 1943-01-21 1944-06-06 Allen Neil Fabric Gas Containe Improvements in flexible containers for transporting gas
US2978004A (en) * 1959-06-11 1961-04-04 Donald F Smith Swivel closure for rotatable containers
US4966310A (en) * 1988-12-01 1990-10-30 Hawkins Gerald P Collapsible storage container and method for storing matter
US5073035A (en) * 1991-05-09 1991-12-17 Williams Kenneth J Bulk carrying bag
US5421476A (en) * 1991-07-15 1995-06-06 Matias; Carlos J. D. Modified flexible insert for a generally rectangular container

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014121381A1 (en) * 2013-02-11 2014-08-14 Newterra Ltd. Support arrangements for water treatment tank
WO2014121380A1 (en) * 2013-02-11 2014-08-14 Newterra Ltd. Converted intermodal container for use as a water processing tank
US9399535B2 (en) 2013-02-11 2016-07-26 Newterra Ltd. Support arrangements for water treatment tank
FR3044078A1 (en) * 2015-11-24 2017-05-26 Brgm HEATED, HIGH TEMPERATURE, HIGH-PRESSURE GEOTHERMAL EXCHANGER FOR MAGMATIC OR METAMORPHIC FORMATION
WO2017089694A3 (en) * 2015-11-24 2017-10-12 Brgm High-pressure and high-temperature closed geothermal exchanger for a magmatic or metamorphic formation
US10690382B2 (en) 2015-11-24 2020-06-23 Brgm High-pressure and high-temperature closed geothermal exchanger for a magmatic or metamorphic formation

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Publication number Publication date
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CA Change of address

Effective date: 20120521

TP Transmission of property

Owner name: AERAZUR, FR

Effective date: 20120521

CD Change of name or company name

Owner name: ZODIAC AEROSAFETY SYSTEMS, FR

Effective date: 20141022

PLFP Fee payment

Year of fee payment: 20