EP0557200A1 - Verfahren und Vorrichtung zum Unschädlichmachen einer Bedrohung durch Freigabe eines Neutralisationsmittels - Google Patents
Verfahren und Vorrichtung zum Unschädlichmachen einer Bedrohung durch Freigabe eines Neutralisationsmittels Download PDFInfo
- Publication number
- EP0557200A1 EP0557200A1 EP19930400422 EP93400422A EP0557200A1 EP 0557200 A1 EP0557200 A1 EP 0557200A1 EP 19930400422 EP19930400422 EP 19930400422 EP 93400422 A EP93400422 A EP 93400422A EP 0557200 A1 EP0557200 A1 EP 0557200A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pyrotechnic
- head according
- threat
- gel
- pyrotechnic head
- 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
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
- F41H9/00—Equipment for attack or defence by spreading flame, gas or smoke or leurres; Chemical warfare equipment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
- F41H11/00—Defence installations; Defence devices
- F41H11/02—Anti-aircraft or anti-guided missile or anti-torpedo defence installations or systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
- F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
- F42B12/36—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information
- F42B12/46—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information for dispensing gases, vapours, powders or chemically-reactive substances
Definitions
- the present invention relates to the field of methods and devices for neutralizing a threat.
- the invention relates more particularly to a method for neutralizing a threat by deploying a neutralizing substance between the threat and an area to be protected.
- the invention also relates to a pyrotechnic head for neutralizing a threat by deployment between the threat and an area to be protected with a neutralizing substance.
- FIGS. 1A and 1B illustrating the state of the art, a threat referenced C (armored vehicle) and an area to be protected referenced P.
- a smoke signal is sent in the vicinity of the threat to generate a screen referenced E.
- the protection conferred by the devices of the prior art is therefore short-lived.
- a first object of the invention is to propose a method for effectively neutralizing a threat.
- a second object of the invention is to propose an improved pyrotechnic head to neutralize a threat.
- the invention achieves this first object by a method for neutralizing a threat, of the type comprising the step which consists in deploying a neutralizing substance forming a screen between the threat and an area to be protected, in which a threat is sent over the threat. neutralizing substance able to adhere to it.
- the neutralizing substance comprises a smoke gel.
- the gel is active in a wavelength range comprising the visible and / or the infrared by absorption or saturation.
- the invention achieves the second object by proposing a pyrotechnic head of the type comprising an envelope, a neutralizing substance contained in the envelope and dispersing means for sending between the threat and an area to be protected the neutralizing substance adapted to adhere to the threat , characterized in that the neutralizing substance comprises a smoke gel.
- the neutralizing substance optionally comprises a pyrotechnic composition capable of producing, on burning, a strong light flash.
- the gel and the pyrotechnic composition are placed inside the envelope respectively in a main compartment and a separate secondary compartment.
- the dispersing means comprise detonating cutting cords.
- the detonating cutting cords are arranged inside a central tube at least partially passing through the neutralizing substance along an axis of symmetry of the envelope.
- the main compartment and the secondary compartment are separated by a common separating partition.
- the separating partition has the shape of a frustoconical sleeve of revolution around the axis of symmetry of the envelope, fitted at one end on the central tube and bearing at the other end on the inner surface of the envelope.
- the smoke gel is contained in the main compartment of the envelope, bordered by the interior of the frustoconical sleeve.
- the separating partition is a cylindrical sleeve with an inside diameter greater than the outside diameter of the central tube, coaxial with the latter.
- the pyrotechnic composition is contained in the annular space between the inner surface of the cylindrical sleeve and the outer surface of the central tube.
- the pyrotechnic head is provided with a tail unit to form a projectile, and preferably comprises propulsion means to form a rocket.
- FIG. 2A shows a threat referenced C, for example an armored vehicle, and an area to be protected referenced P.
- the method according to the invention aims to deploy on threat C a neutralizing substance referenced S, adapted to adhere to the threat and follow it in its possible progression.
- the neutralizing substance S is carried away by the threat and continues to act on it to form a screen E.
- the neutralizing substance S is preferably active in the visible and infrared optical domains and acts by saturation or absorption.
- the neutralizing substance comprises for this purpose, according to the invention, a smoke gel referenced G, capable of adhering to the threat and generating by burning fumes forming a screen.
- the fumigant gel G results from the dilution of an aliphatic or aromatic hydrocarbon in a polychloroprene, for example neoprene, in proportions of between 50 and 400 g of neoprene per liter of hydrocarbon.
- the smoke gel G comprises a composition based on red phosphorus or any other equivalent substance known to those skilled in the art which saturates by burning the operation of one or more sensors used by the threat.
- a powder based on reducing metals such as magnesium or aluminum is incorporated into the fumigant gel G to activate the combustion thereof.
- the invention also relates to a pyrotechnic head.
- a pyrotechnic head there is shown in Figure 3 in axial section taken in a plane containing the axis of symmetry, a pyrotechnic head according to a first embodiment of the invention.
- the pyrotechnic head is referenced as a whole 300.
- the axis of symmetry of the pyrotechnic head 300, referenced X, is contained in the cutting plane of FIG. 3.
- the pyrotechnic head 300 comprises a symmetrical envelope of revolution around the axis X, comprising a tubular case 310 closed at a first end 311 by a rounded cap 320.
- the tubular case 310 extends at the end 312 opposite the first end 311 by a frustoconical part 313 converging away from the first end 311 and terminated by a cylindrical skirt 314 extending parallel to the axis X.
- the cap 320 comprises a rounded part 321 in the form of a paraboloid extended by a cylindrical skirt 322 of external diameter substantially equal to the internal diameter of the case 310.
- the rounded part 321 has a hemispherical external surface.
- the cylindrical skirt 322 is threaded on its outer flank and engages by screwing in a corresponding tapping provided on the internal surface 315 of the case 310 in the vicinity of the first end 311.
- An annular flange 328 is provided on the external flank of the cylindrical skirt 322, projecting radially from this flank and intended to come to bear on the free edge 316 of the first end 311 of the case 310 when the cap 320 is engaged by screwing therein.
- the cap 320 is advantageously truncated at its top, and it is provided externally with a tapped bore 325, centered on the axis X, of diameter less than the diameter of the truncated section.
- the bore 325 preferably crosses the cap 320.
- a plug 330 symmetrical of revolution, is provided for engaging in the bore 325 and closing the cap 320.
- the plug 330 comprises a threaded cylindrical body 332, intended to engage by a front end 330 by screwing into the bore 325 of the cap 320. It is possible without departing from the scope of the invention to fix the plug 330 on the cap 320 by other equivalent fixing means.
- the cylindrical body 332 of the stopper 330 is extended at its rear end opposite the front end by a dome-shaped head 333 symmetrical in revolution, comprising a flat base 334 intended to rest on the truncated surface 326 of the cap 320.
- the head 333 has a rounded external surface and advantageously replaces the external surface of the truncated portion of the cap 320.
- the cylindrical body 332 is provided at its front end 3300 with a blind bore 336 centered on the axis X and leading to the case 310.
- An annular groove 329 is advantageously provided, as shown, on the outer flank of the cylindrical skirt 322 to accommodate a seal 327, interposed between the cap 320 and the case 310.
- the case 310 is closed at its second end 312 by a cylindrical plug 340, threaded on its external flank and intended to engage by screwing in a thread provided on the internal flank of the skirt 314.
- the plug 340 advantageously comprises a bottom constituted by a flat disc 341, extended at its periphery by a cylindrical skirt 342 perpendicular to the plane of the disc 341.
- An annular groove 345 is preferably provided on the external flank of the skirt 342 to receive a seal 347, interposed between the plug 340 and the case 310.
- the pyrotechnic head 300 also comprises a central tube 350, centered on the axis X, and fitted at its ends in the bores 336 and 343 provided on the plugs 330 and 340.
- a transverse dividing partition 360 symmetrical of revolution around the axis X is provided inside the head 300 and extends between the outer surface 351 of the central tube 350 and the surface internal 315 of the case 310.
- the partition 360 has the shape of a truncated cone 361, extended at each end by cylindrical skirts 362 and 363, parallel to the axis of symmetry of the portion frustoconical 361, coincident with the axis X.
- the frustoconical portion 361 is inclined on the axis X preferably, as shown, with an angle between 20 and 40 °.
- the skirt 362 advantageously has a free edge 364 curved opposite the axis X.
- the skirt 363 has an internal diameter corresponding to the external diameter of the central tube 350, while the skirt 362 has an external diameter corresponding to the internal diameter of the case 310.
- the skirt 363 is engaged on the central tube 350 and the free edge 364 is engaged in a housing provided on the external flank of the cylindrical skirt 322 in the vicinity of the free edge 3200 of the cap 320.
- the cap 320 keeps pressed against the internal surface 315 of the case 310 the skirt 362 of the separating partition 360.
- the main compartment 301 is turned towards the inside of the partition 360.
- the main compartment advantageously accommodates a smoke smoke gel G as described above.
- the secondary compartment 302 accommodates a pyrotechnic composition F which will be described in detail below.
- the main compartment 301 preferably corresponds to about two thirds of the internal volume contained by the envelope formed by the union of the case 310 and the cap 320.
- the pyrotechnic head 300 also includes dispersing means housed inside the tube 350 which will be described in more detail below. These dispersing means are preferably constituted by detonating cutting cords 1000, visible on the cross section of FIG. 4, and extending parallel to the axis X.
- FIG. 5 shows a second alternative embodiment of a pyrotechnic head 500 according to the invention.
- the pyrotechnic head 500 comprises a cylindrical case 510 similar to the case 310 of the pyrotechnic head 300 and which will therefore not be described in more detail.
- the case 510 is closed at a first end 511 by a cap 520 truncated at its top, similar to cap 320 of the first embodiment of the invention, and closed by a plug 530.
- the references 514, 515 correspond to parts similar to those of the case 310, which have have been referenced 314 and 315 in FIG. 3.
- the plug 530 does not have a bore on its cylindrical body.
- the case 510 is closed at its second end 512 opposite the end 511 by a stopper 540 engaged on the case 510 in a similar manner to the engagement of the stopper 340 on the case 310.
- the stopper 540 comprises a bottom 541 provided with a bore 543 passing through the bottom 541.
- a cylindrical sleeve 546 centered on the axis X, of internal diameter corresponding to the diameter of the bore 543, is connected to the face of the bottom 541 disposed opposite the cap 520.
- the sleeve 546 is connected to the bottom 541 of the plug 540 with an outer surface recessed towards the axis X to form an external circular groove 548.
- a central tube 550 of axis X and of external diameter corresponding to the internal diameter of the bore 543 is engaged by an end 5500 in the sleeve 546 and the bore 543.
- a second cylindrical tube 560 of internal diameter corresponding to the external diameter of the sleeve 546 is engaged by an end 5600 on the latter and crimped on the groove 548.
- An annular groove 549 formed on the external surface of the sleeve 546 serves to receive a gasket seal 549, interposed between the sleeve 546 and the tube 560.
- the cylindrical tube 560 is closed at the end 5601 opposite the end 5600 by a plug 570 comprising a bottom 571 having the shape of a flat disc extended at its periphery by a cylindrical skirt 572 perpendicular to the bottom 571 and extending in the direction of the cap 520.
- the free end 574 of the cylindrical skirt 572 is chamfered on its outer flank.
- the free edge 565 of the end 5601 of the cylindrical tube 560 is crimped onto the chamfered edge 574 of the skirt 572.
- the bottom 571 of the plug 570 is applied to the free circular section of the central tube 550 and keeps the latter engaged in the sleeve 546.
- An annular groove 573 is provided on the external side of the cylindrical skirt 572 to receive a seal 577 interposed between the plug 570 and the cylindrical tube 560.
- the space between the meeting of the interior surface 515 of the case 510 and the interior surface of the cap 520, and the exterior surface 5603 of the cylindrical tube 560 defines a main compartment 501 which contains a smoke gel G as described above.
- the annular space between the central tube 550 and the cylindrical tube 560 closed at its ends by the plug 570 and the sleeve 546 advantageously contains a pyrotechnic composition referenced F whose function will be described in more detail below.
- FIG. 6 is a sectional view along the section line VI-VI in FIG. 5 that the central tube 550 is traversed by detonating cords 1000 arranged parallel to the axis X.
- the cords detonants 1000 are also visible in FIG. 4.
- FIG. 7 shows a schematic view in cross section of a detonating cutting cord 1000.
- the cord is constituted by a metal sheath 1100 of essentially triangular section, comprising two sides inclined between them at an angle close to 60 °, with apex 1200 rounded convex towards the outside and base 1300 concave towards the outside, symmetrical with respect to a bisector plane P passing through the apex 1200, which is also plane of symmetry for the sheath.
- the sheath is charged with an explosive 1400.
- the concavity facing outwards from the base of the sheath 1100 ensures the concentration of the explosive power in the bisector plane P, which is advantageously confused with a diametral plane of a pyrotechnic head according to the invention.
- This metal sheath 1100 is advantageously made of lead and the explosive 1400 is advantageously hexogen.
- the choice of the quantity of explosive 1400 contained in the sheath 1100 makes it possible to adapt the power of the cords to the dispersion desired for the pyrotechnic head.
- FIGS. 8 and 9 illustrate the behavior of the sheath 1100 under the effect of the detonation of the explosive 1400. It is noted on examining FIG. 8 that under the effect of the detonation, the base of the sheath 1100 cord 1000 is projected towards the wall of a tube 350 or 550 previously described to form a dart 1500 which crosses it, as illustrated in FIG. 9.
- the operation of the pyrotechnic head is as follows: firing means not shown (advantageously an inertia striker), initiate the detonation of the detonating cutting cords 1000.
- the detonation of the cords is accompanied by a rise in temperature and especially in pressure of the central tube 350 containing the cords which is cut radially by the high energy darts 1500, released by the detonation of the cords 1000.
- the darts 1500 quickly reach the envelope of a pyrotechnic head according to the invention, for example the case 310 of the head 300 for cutting it along three lines substantially parallel to the axis X of the envelope. Under the effect of internal pressure, the three cut-out case fragments are ejected radially and the contents of the envelope are dispersed in three lobes, in directions corresponding to the bisector plane (B) of each dihedron having a common edge the X axis and containing two cords, as illustrated in Figure 10.
- B bisector plane
- the pyrotechnic head 300 or 500 is provided at its end 312 or 512 with a tail unit to form a projectile.
- the empennage can for example be attached to the case 310 or 510 by screwing on a thread made on the external flank of the skirts 314 or 514.
- the pyrotechnic head 300 or 500 further comprises propulsion means not shown to form a rocket.
- the pyrotechnic composition F preferably comprises a pulverulent mixture of a reducing and oxidizing composition, the initiation of which in reaction is obtained by the detonation of the cords and which produced by reacting a strong luminous flash intended to dazzle, even to blind.
- a pyrotechnic head according to the invention has a simple structure which offers numerous advantages, in particular lightness and robustness.
- detonating cutting cords thanks to their double cutting and dispersing action makes it possible on the one hand to cut the envelope of the neutralizing head very efficiently and on the other hand to send under advantageous conditions the neutralizing substance in contact with the threat. It ensures in particular a good recovery of the threat by the neutralizing substance, therefore a good adhesion of the latter for a prolonged period of time.
- the neutralizing substance follows the threat as it progresses and its effect is not significantly affected by the wind since it is carried by the threat itself.
- a smoke smoke gel G adapted to adhere to the threat also makes it possible to effectively generate a screen in the wavelengths of the visible and infrared range, and the smoke smoke gel produces, when consumed, a strong infrared radiation which saturates the operation of sensors operating in this part of the spectrum. This effectively and prolonged neutralizes the means of guidance and the weapons carried by the threat which operate in the visible and / or infrared domain.
- the combined use of the fumigant gel G and the dazzling pyrotechnic composition F provides increased efficiency.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Aviation & Aerospace Engineering (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Air Bags (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9202036A FR2687773B1 (fr) | 1992-02-21 | 1992-02-21 | Procede et dispositif pour neutraliser une menace par deploiement d'une substance neutralisante formant ecran entre la menace et une zone a proteger. |
FR9202036 | 1992-02-21 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0557200A1 true EP0557200A1 (de) | 1993-08-25 |
EP0557200B1 EP0557200B1 (de) | 1997-05-02 |
Family
ID=9426901
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19930400422 Expired - Lifetime EP0557200B1 (de) | 1992-02-21 | 1993-02-18 | Verfahren und Vorrichtung zum Unschädlichmachen einer Bedrohung durch Freigabe eines Neutralisationsmittels |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0557200B1 (de) |
DE (1) | DE69310238T2 (de) |
ES (1) | ES2103442T3 (de) |
FR (1) | FR2687773B1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0791800A1 (de) * | 1996-02-21 | 1997-08-27 | Lynn Boyer | Anti-Raketen Rakete |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110279958A (zh) * | 2019-07-22 | 2019-09-27 | 李�杰 | 一种撑开型延时森林灭火弹 |
DE102023000394A1 (de) | 2023-02-08 | 2024-08-08 | Stanislav Tkadlec | Sonder-Gefechtskopf |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH26021A (de) * | 1902-06-02 | 1903-07-31 | Rheinische Metallw & Maschf | Granate |
US3382800A (en) * | 1964-11-09 | 1968-05-14 | Navy Usa | Linear-shaped charge chemical agent disseminator |
US3402665A (en) * | 1966-08-15 | 1968-09-24 | Aeroprojects Inc | Nonpyrotechnic disseminator |
DE2159755A1 (de) * | 1971-12-02 | 1973-06-07 | Messerschmitt Boelkow Blohm | Mine |
FR2368685A1 (fr) * | 1976-10-21 | 1978-05-19 | Rheinmetall Gmbh | Projectile porteur pour corps efficaces expulsables |
US4196668A (en) * | 1975-11-18 | 1980-04-08 | Morlock Guenter E | Stopping operating enemy vehicles, vessels and aircrafts |
US4976201A (en) * | 1989-11-01 | 1990-12-11 | Martin Electronics, Inc. | Non-lethal distraction device |
US4976202A (en) * | 1988-05-31 | 1990-12-11 | Honigsbaum Richard F | Antitank-antipersonnel weapon |
WO1991001479A2 (de) * | 1989-07-19 | 1991-02-07 | Gustav Thorban | Farbnebelgenerator |
-
1992
- 1992-02-21 FR FR9202036A patent/FR2687773B1/fr not_active Expired - Fee Related
-
1993
- 1993-02-18 EP EP19930400422 patent/EP0557200B1/de not_active Expired - Lifetime
- 1993-02-18 DE DE1993610238 patent/DE69310238T2/de not_active Expired - Fee Related
- 1993-02-18 ES ES93400422T patent/ES2103442T3/es not_active Expired - Lifetime
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH26021A (de) * | 1902-06-02 | 1903-07-31 | Rheinische Metallw & Maschf | Granate |
US3382800A (en) * | 1964-11-09 | 1968-05-14 | Navy Usa | Linear-shaped charge chemical agent disseminator |
US3402665A (en) * | 1966-08-15 | 1968-09-24 | Aeroprojects Inc | Nonpyrotechnic disseminator |
DE2159755A1 (de) * | 1971-12-02 | 1973-06-07 | Messerschmitt Boelkow Blohm | Mine |
US4196668A (en) * | 1975-11-18 | 1980-04-08 | Morlock Guenter E | Stopping operating enemy vehicles, vessels and aircrafts |
FR2368685A1 (fr) * | 1976-10-21 | 1978-05-19 | Rheinmetall Gmbh | Projectile porteur pour corps efficaces expulsables |
US4976202A (en) * | 1988-05-31 | 1990-12-11 | Honigsbaum Richard F | Antitank-antipersonnel weapon |
WO1991001479A2 (de) * | 1989-07-19 | 1991-02-07 | Gustav Thorban | Farbnebelgenerator |
US4976201A (en) * | 1989-11-01 | 1990-12-11 | Martin Electronics, Inc. | Non-lethal distraction device |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0791800A1 (de) * | 1996-02-21 | 1997-08-27 | Lynn Boyer | Anti-Raketen Rakete |
Also Published As
Publication number | Publication date |
---|---|
DE69310238D1 (de) | 1997-06-05 |
FR2687773A1 (fr) | 1993-08-27 |
FR2687773B1 (fr) | 1995-07-13 |
EP0557200B1 (de) | 1997-05-02 |
DE69310238T2 (de) | 1997-11-20 |
ES2103442T3 (es) | 1997-09-16 |
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