EP2229573A2 - Opercule arrière déformable pour conteneur de missile, comportant un cadre de support aval - Google Patents
Opercule arrière déformable pour conteneur de missile, comportant un cadre de support avalInfo
- Publication number
- EP2229573A2 EP2229573A2 EP09704545A EP09704545A EP2229573A2 EP 2229573 A2 EP2229573 A2 EP 2229573A2 EP 09704545 A EP09704545 A EP 09704545A EP 09704545 A EP09704545 A EP 09704545A EP 2229573 A2 EP2229573 A2 EP 2229573A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- blade
- downstream
- container
- blades
- upstream
- 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
Links
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 32
- 239000012528 membrane Substances 0.000 claims abstract description 18
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 239000007789 gas Substances 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 11
- 229920001296 polysiloxane Polymers 0.000 claims description 5
- 230000007423 decrease Effects 0.000 claims description 4
- 239000000470 constituent Substances 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 3
- 239000003380 propellant Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000000605 extraction Methods 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 125000006850 spacer group Chemical class 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41F—APPARATUS FOR LAUNCHING PROJECTILES OR MISSILES FROM BARRELS, e.g. CANNONS; LAUNCHERS FOR ROCKETS OR TORPEDOES; HARPOON GUNS
- F41F3/00—Rocket or torpedo launchers
- F41F3/04—Rocket or torpedo launchers for rockets
- F41F3/042—Rocket or torpedo launchers for rockets the launching apparatus being used also as a transport container for the rocket
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41F—APPARATUS FOR LAUNCHING PROJECTILES OR MISSILES FROM BARRELS, e.g. CANNONS; LAUNCHERS FOR ROCKETS OR TORPEDOES; HARPOON GUNS
- F41F3/00—Rocket or torpedo launchers
- F41F3/04—Rocket or torpedo launchers for rockets
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41F—APPARATUS FOR LAUNCHING PROJECTILES OR MISSILES FROM BARRELS, e.g. CANNONS; LAUNCHERS FOR ROCKETS OR TORPEDOES; HARPOON GUNS
- F41F3/00—Rocket or torpedo launchers
- F41F3/04—Rocket or torpedo launchers for rockets
- F41F3/0413—Means for exhaust gas disposal, e.g. exhaust deflectors, gas evacuation systems
Definitions
- Deformable rear door for missile container having a downstream support frame
- the present invention relates to a rear cover, also called downstream cap, equipping the bottom of a missile container. More particularly, the invention relates to a downstream cap of the deformable type.
- a missile launcher is known adapted to be embarked on a vessel comprising a series of cells, each cell being intended to receive a munition consisting of a missile placed in a container.
- the upper part of a cell opens at the deck of the ship and is closed, outside the launching phasing, by a door.
- the lower part of a cell has a communication opening opening into a plenum chamber or plenum for receiving the gases emitted during the launch of a missile.
- the plenum common to the various cells, is equipped with a gas extraction chimney.
- a munition is formed by a missile placed inside a container.
- the upper and lower parts of the container are sealed in a sealed manner, respectively by a lid provided with an upstream lid and by a bottom provided with a downstream lid.
- the internal volume of the container is generally filled with an inert gas at overpressure relative to the atmosphere (typically 1.5 bar).
- the lower part of the container is extended by an adapter designed to co-operate with the communication opening between a cell and the plenum.
- the ammunition is inserted from above into a pitcher cell, the bottom of the container being then in fluid communication with the plenum by means of the adapter.
- the missile When launching the missile, the door of the cell being previously open, the missile is fired.
- the propellant gases then increase the pressure and the temperature significantly inside the container, which perforates the upstream lid of the container and opens the downstream cap.
- the communication of the interior of the container with the plenum via the adapter allows the evacuation of the propulsion gases in the plenum, then their extraction via the chimney. After firing, the door of the cell is closed.
- a deformable cover which opens at the launch of a missile and closes after.
- This deformable seal comprises, superimposed axially along a principal axis of symmetry, which coincides with the axis of the container, a gate, upstream sealing membranes, a stack of resilient blades and tear-off membranes .
- the resilient blades are preferably rectangular and are held on their periphery between upstream and downstream support frames.
- Each elastic blade consists of several triangular petals made in a flexible and elastic thin metal plate. In their rest position, the petals are contiguous and thus obstruct the opening of the lid of the bottom of the container.
- the edges of the petals separate from each other and create a passage connecting the interior of the container and the plenum via the adapter.
- the pressure inside the container decreases.
- the petals return elastically in their resting position, abutting against the gate, and close the orifice of the operculum.
- the grid also forms an abutment having the advantage of preventing the petals from deforming towards the interior of the container, when the plenum is overpressurized due to the propulsion gases of a neighboring missile being launched.
- the invention therefore aims to provide a deformable seal having a better seal after use.
- the subject of the invention is a deformable type cover, intended to equip the bottom of a missile container and able to open under the thrust of the propulsion gases of a missile contained in the container and to closing after ejection of the missile, the lid comprising a grid and a stack of elastic blades sandwiched between at least one thermal protection membrane and a sealing membrane, upstream and downstream, and held between an upstream support frame and a frame downstream support.
- the downstream support frame has an inner edge extended downstream so as to provide the cap with stop means defining a maximum deformation position of the elastic blades.
- the lid comprises one or more of the following characteristics, taken separately or in any technically possible combination:
- the inner edge of the downstream frame is profiled, the absolute value of the curvature at any point of the profile of said inner edge being less than a threshold curvature beyond which the material constituting the blades loses its mechanical properties of elasticity.
- the profile of the inner edge of the downstream support frame comprises a convex upstream portion and a rectilinear or concave downstream portion adapted to conform the free end of the elastic blade.
- At least the surface of the inner edge of the downstream support frame is in silicon.
- the thickness of the elastic blades decreases from one blade to the other, from the upstream to the downstream of the stack, the thickness of a blade being chosen so that, in deformed position, this blade is subjected only to local stresses compatible with the field of elasticity of the material constituting the blade.
- the thickness of a blade, at any point of this blade is less than a maximum thickness at this point, which is proportional to the radius of curvature of the blade at this point, when it is deformed.
- the thickness of a blade is constant at any point on said blade and is equal to the smallest of the maximum thicknesses at each point of the blade.
- each intermediate slip means is constituted by a sheet made of a thermal insulating material.
- the material of said sheets is silicone or a mat, preferably a mat of glass fibers.
- FIG. 1 is a schematic sectional representation of a container inserted into a standard cell
- FIG. 1 is a top view of the bottom of the container of Figure 1;
- FIG. 3 is a representation in axial section of the lid according to the invention equipping the bottom of a container
- FIG. 4 is an enlarged schematic representation of a variant of the lid of Figure 3 having blades of varying thickness, in an open position (half left view) and in a closed position (half view of right) ;
- FIG. 5 is an enlarged schematic representation of another variant of the lid of FIG. 3 comprising intermediate slip sheets from one petal to the other, in an open position (half left view) and in a closed position (half right view).
- the vertical missile launcher 1 has several cells 2 arranged vertically in the hull 3 of a ship.
- a cell 2 is a structure consisting of a wire mesh intended to receive a formed munition a container containing a missile.
- the upper part of the cell 2 is located at the deck 4 of the ship and is closed by a door 5, mounted on the deck 4, which is open when fired and then closed again.
- the lower part of the cell 2 has an opening 10 communicating with a plenum 11.
- the plenum 11 is common to the various cells 2 of the launcher and allows the evacuation of the propulsion gases through a chimney 12, extending vertically between the two rows of cells 2.
- the chimney 12 opens to the upper level of the launcher, that is to say here at the bridge 4.
- a vertical missile launcher has cells capable of receiving a munition consisting of a container 15 in which is disposed a missile 16 of large diameter. In the inserted position in the cell 2, the axis A of the container 15 coincides with the axis of the cell.
- the container 15 comprises a lateral wall 20, an upper end wall or cover 21 and a bottom end wall or bottom 22.
- the cover 21 is provided with an upstream cover 23.
- the base 22 is equipped with a downstream cover 56 which will be described in detail below.
- the bottom 22 comprises an adapter 25 adapted to be inserted into the opening 10 of the plenum 11 during the loading of the munition so that the gases leaving the container 15 during the launch of the missile 16 are guided in the plenum 11 Referring to FIGS.
- the improved deformable downstream membrane 56 comprises, superimposed along an axis of symmetry C, from the upstream (interior of the container) downstream (the outside of the container), held between an upstream support frame 61 and a downstream support frame 64, a gate 62; an upstream thermal protection membrane 70; an upstream sealing membrane 71 for example of aluminum; a stack of resilient blades 63; a downstream sealing membrane 73, for example made of aluminum; and, a downstream thermal protection membrane 72.
- Each elastic blade 63 is free-form, but for practical reasons, it is preferably rectangular (see FIG. 2) and the stack of elastic blades is held by its peripheral edge between the upstream and downstream frames 61 and 64 rectangular.
- Each elastic blade 63 consists of four petals of triangular shape 65. Each petal 65 corresponds substantially to a portion of the blade 63 divided along its two diagonals. The edges of two petals 65 facing each other provide a space 66 in the form of a cross whose total surface is much smaller than the surface of the orifice 81 of the operculum 56, so that when the petals 65 are adjacent, it can be considered that the operculum 56 closes the bottom of the container that team.
- the various intermediate membranes 70, 71, 72 and 73 are in one piece. They may be provided with diagonal lines of lesser resistance corresponding to the subdivision of the blades 63 into petals 65. Thus, under the effect of the propulsion gases, these intermediate membranes 70 to 73 tear cleanly along the lines of least resistance.
- the inner edge 80 of the downstream frame 64 is extended downstream and presented axially a profile adapted so as to constitute a stop for the petals.
- the downstream frame 64 is of rectangular shape, in the radial plane transverse to the main axis C, and extends axially along the axis C over a height H greater than a transverse dimension D of a petal 65 , corresponding approximately to the half width of the orifice 81 of the lid 56.
- the edge profile 80 has a convex upstream portion 90, followed by a concave downstream portion 91.
- the downstream portion 91 could be rectilinear.
- the upstream and downstream portions 90, 91 connect to each other tangentially.
- the concavity of the upstream portion 90 is understood in that the center of curvature C90 of the edge profile 90 at any point P90 of this profile is located, in projection in a radial plane, outside the central orifice. 81.
- the convexity of the downstream portion 91 means that the center of curvature C91 of the edge profile 91 at any point P91 of this profile lies, in projection in a radial plane, at Inside the central orifice 81.
- the convexity of the upstream portion 90 is oriented towards the axis C of the cap 56 and the concavity of the downstream portion 91 is oriented towards the axis C of the cap 56.
- edge 80 of the downstream frame 64 is made of a material such as silicone which is both a thermal insulator and has a mechanical strength for the support of the petals.
- the lid 56 will now be described when it equips the bottom of the container 15 of FIG. 1, the axis C of the lid coinciding then with the axis A of the container 15.
- the door 5 of the cell 2 is open.
- the missile 16 is then fired.
- the propellant gases then increase the pressure and the temperature significantly inside the container 15.
- the upstream cap 54 is bored and the downstream cap 56 opens. which allows the departure of the missile and the evacuation of gases.
- the opening of the downstream cap is effected by the action of the pressure applied to the upper or upstream surface of a blade 63 so that it deforms and deviates from its rest position, this deformation of the petals. accompanying tearing of the sealing membranes and thermal protection 70 to 73.
- a petal 65 is deformed around an inner edge 80 of the downstream frame 64. Due to the tearing of the membranes 70-73 and the displacement of the various petals 65 of the 63 blades apart from each other, it creates a passage providing communication between the interior of the container 15 and the plenum 11 via an adapter 25. The latter serves to receive the gas passing through the bottom 22 of the container 15 to guide them through the inlet opening of the plenum 11.
- the curvature at each point P of the edge profile 80 is determined in such a way that the area of the petal 65 bearing at this point P of the profile has a limited and controlled maximum deformation.
- That the downstream portion 91 of the edge 80 is concave, or at least straight, has the following advantage. It is possible that the tip 96 of the triangular petal 65, which is placed near the combustion flame produced by the missile, is plasticized. However, in the maximum deformation position, the tip 96 is supported on the concave or rectilinear downstream portion 91 which then gives it a shape having a curvature oriented towards the axis C. Thus, the plasticized tip 96 is bent towards the gate 62 , so that it is applied against it when the petal returns to the rest position. This ensures that the space 66 between the petals 65 is minimal after use. Once the missile 16 is fired, the pressure inside the container 15 decreases.
- the gate 62 forms a stop ensuring that the petals 65 easily find their position. rest position in which they are in a plane transverse to the axis C of the lid and for which the space 66 is the weakest.
- the gate 62 also allows the petals 65 do not fold towards the inside of the tube 51, when the adapter 25 is overpressure due to the propulsion gases of a missile launched from a neighboring tube.
- the cover 156 further comprises a stack of resilient blades 163a, 163b, 163c of thickness ea, eb, ec variable . More specifically, the elastic blades placed upstream of the stack have a thickness greater than those of the elastic blades placed downstream of the stack. In Figure 4, the thicknesses ea, eb and ec of the three blades 163a, 163b and 163c schematically shown decreasing progressively from upstream to downstream of the stack.
- each blade 163a , 163b or 163c is chosen so that, when it is under stress, bearing against an inner edge 80 of the downstream support frame 64, its upstream face, facing the combustion flame, undergoes an elongation that remains compatible with the field of elasticity of the constituent metal of the blade.
- the edge 80 of the downstream frame 64 has a rounded portion 90 having a center O of curvature.
- the thickness e of the blade 63 at a point is chosen to be less than a maximum thickness em which is greater than the radius of curvature RM of the neutral fiber f at this point of the blade 63 deformed around this rounded portion is high.
- the thickness of the blade is constant and is chosen as the smallest thickness em at any point of the blade. The person skilled in the art knows how to determine the appropriate thicknesses.
- an improved deformable downstream cap 256 comprises in addition, a stack of elastic metal strips 263 of variable thickness separated from each other by interlayer sheets 267 made of a non-metallic material resistant to temperature, adapted to facilitate the sliding of the elastic strips one on the other.
- interlayer sheets 267 made of a non-metallic material resistant to temperature, adapted to facilitate the sliding of the elastic strips one on the other.
- This spacer sheet 267 is preferably of a heat insulating material such as silicone, or a mat, for example glass fiber.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Carbon And Carbon Compounds (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
- Radar Systems Or Details Thereof (AREA)
- Support Of The Bearing (AREA)
- Closures For Containers (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL09704545T PL2229573T3 (pl) | 2008-01-11 | 2009-01-08 | Układ dna kontenera pocisków rakietowych |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0850162A FR2926360B1 (fr) | 2008-01-11 | 2008-01-11 | Opercule arriere deformable pour conteneur de missile, comportant un cadre de support aval |
| PCT/FR2009/050020 WO2009092938A2 (fr) | 2008-01-11 | 2009-01-08 | Opercule arrière déformable pour conteneur de missile, comportant un cadre de support aval |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2229573A2 true EP2229573A2 (fr) | 2010-09-22 |
| EP2229573B1 EP2229573B1 (fr) | 2016-12-07 |
Family
ID=39745427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP09704545.4A Active EP2229573B1 (fr) | 2008-01-11 | 2009-01-08 | Système de fond d'un conteneur de missile |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US8418593B2 (fr) |
| EP (1) | EP2229573B1 (fr) |
| KR (1) | KR101567998B1 (fr) |
| CN (1) | CN101918786B (fr) |
| ES (1) | ES2617208T3 (fr) |
| FR (1) | FR2926360B1 (fr) |
| MA (1) | MA32051B1 (fr) |
| PL (1) | PL2229573T3 (fr) |
| UA (1) | UA98686C2 (fr) |
| WO (1) | WO2009092938A2 (fr) |
| ZA (1) | ZA201004820B (fr) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8300757B2 (en) | 2008-08-08 | 2012-10-30 | Motorola Mobility Llc | Methods for detection of failure and recovery in a radio link |
| US8584569B1 (en) * | 2011-12-06 | 2013-11-19 | The United States Of America As Represented By The Secretary Of The Navy | Plume exhaust management for VLS |
| FR3039889B1 (fr) | 2015-08-05 | 2017-07-28 | Mbda France | Opercule flexible pour conteneur de missile |
| EP3340957B1 (fr) | 2015-08-24 | 2019-07-03 | Handi-Move | Pince améliorée et aides de levage de patients à l'aide de la pince |
| FR3053455B1 (fr) * | 2016-07-01 | 2019-04-19 | Mbda France | Opercule flexible pour conteneur de missile |
| CN112985174B (zh) * | 2021-02-10 | 2023-01-10 | 上海材料研究所 | 一种对激波反射具有整流效果的柱面正交型密封后端盖 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4324167A (en) * | 1980-04-14 | 1982-04-13 | General Dynamics, Pomona Division | Flexible area launch tube rear cover |
| US4498368A (en) * | 1983-10-06 | 1985-02-12 | The United States Of America As Representedby The Secretary Of The Navy | Frangible fly through diaphragm for missile launch canister |
| US4683798A (en) * | 1985-12-27 | 1987-08-04 | General Dynamics, Pomona Division | Gas management transition device |
| US4686884A (en) * | 1985-12-27 | 1987-08-18 | General Dynamics, Pomona Division | Gas management deflector |
| FR2620808B1 (fr) | 1987-09-17 | 1990-01-12 | France Etat Armement | Opercule arriere pour conteneur de missile |
| US5194688A (en) * | 1992-01-31 | 1993-03-16 | Hughes Missile Systems Company | Apparatus for limiting recirculation of rocket exhaust gases during missile launch |
| JP2001124494A (ja) * | 1999-10-25 | 2001-05-11 | Mitsubishi Electric Corp | 飛しょう体の発射装置 |
| JP4338004B2 (ja) * | 2000-03-16 | 2009-09-30 | 株式会社Ihiエアロスペース | ロケットモータのノズルカバー |
| JP3448648B2 (ja) * | 2000-11-27 | 2003-09-22 | 防衛庁技術研究本部長 | 飛しょう体発射筒装置 |
| JP2004077038A (ja) * | 2002-08-20 | 2004-03-11 | Mitsubishi Heavy Ind Ltd | 飛しょう体用キャニスタの後蓋 |
| US7984675B2 (en) * | 2006-02-21 | 2011-07-26 | Metal Storm Limited | Propellant sealing system for stackable projectiles |
-
2008
- 2008-01-11 FR FR0850162A patent/FR2926360B1/fr not_active Expired - Fee Related
-
2009
- 2009-01-08 ES ES09704545.4T patent/ES2617208T3/es active Active
- 2009-01-08 PL PL09704545T patent/PL2229573T3/pl unknown
- 2009-01-08 KR KR1020107015280A patent/KR101567998B1/ko not_active Expired - Fee Related
- 2009-01-08 EP EP09704545.4A patent/EP2229573B1/fr active Active
- 2009-01-08 UA UAA201008714A patent/UA98686C2/ru unknown
- 2009-01-08 WO PCT/FR2009/050020 patent/WO2009092938A2/fr not_active Ceased
- 2009-01-08 US US12/735,379 patent/US8418593B2/en not_active Expired - Fee Related
- 2009-01-08 CN CN2009801019981A patent/CN101918786B/zh not_active Expired - Fee Related
-
2010
- 2010-07-08 MA MA33001A patent/MA32051B1/fr unknown
- 2010-07-08 ZA ZA2010/04820A patent/ZA201004820B/en unknown
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2009092938A2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2229573B1 (fr) | 2016-12-07 |
| ES2617208T3 (es) | 2017-06-15 |
| WO2009092938A2 (fr) | 2009-07-30 |
| WO2009092938A3 (fr) | 2009-12-17 |
| PL2229573T3 (pl) | 2017-05-31 |
| ZA201004820B (en) | 2011-03-30 |
| FR2926360B1 (fr) | 2012-10-19 |
| FR2926360A1 (fr) | 2009-07-17 |
| KR101567998B1 (ko) | 2015-11-10 |
| US8418593B2 (en) | 2013-04-16 |
| US20110011251A1 (en) | 2011-01-20 |
| UA98686C2 (ru) | 2012-06-11 |
| CN101918786B (zh) | 2013-04-24 |
| KR20100122899A (ko) | 2010-11-23 |
| CN101918786A (zh) | 2010-12-15 |
| MA32051B1 (fr) | 2011-02-01 |
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