EP0694753A1 - Pyrotechnische Vorrichtung zum Abschluss von mindestens einem Geschoss - Google Patents

Pyrotechnische Vorrichtung zum Abschluss von mindestens einem Geschoss Download PDF

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Publication number
EP0694753A1
EP0694753A1 EP95401690A EP95401690A EP0694753A1 EP 0694753 A1 EP0694753 A1 EP 0694753A1 EP 95401690 A EP95401690 A EP 95401690A EP 95401690 A EP95401690 A EP 95401690A EP 0694753 A1 EP0694753 A1 EP 0694753A1
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EP
European Patent Office
Prior art keywords
projectile
tube
chamber
rear chamber
plug
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
EP95401690A
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English (en)
French (fr)
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EP0694753B1 (de
Inventor
Guy Valembois
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.)
Etienne LaCroix Tous Artifices SA
Original Assignee
Etienne LaCroix Tous Artifices SA
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.)
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Publication date
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Publication of EP0694753A1 publication Critical patent/EP0694753A1/de
Application granted granted Critical
Publication of EP0694753B1 publication Critical patent/EP0694753B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B4/00—Fireworks, i.e. pyrotechnic devices for amusement, display, illumination or signal purposes
    • F42B4/22—Fireworks, i.e. pyrotechnic devices for amusement, display, illumination or signal purposes characterised by having means to separate article or charge from casing without destroying the casing
    • 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
    • F41H9/06—Apparatus for generating artificial fog or smoke screens
    • F41H9/08—Smoke-pots without propulsive charge, i.e. stationary

Definitions

  • Launcher devices of this type are well known, in embodiments in which the impeller is housed or opens as directly as possible in the rear chamber, being integrated either at the bottom of the launcher tube, or at the rear of the projectile .
  • front and rear are understood by reference to a predetermined direction of movement of the projectile relative to the tube during firing.
  • the known arrangement, mentioned above, of the igniter has a certain number of drawbacks which can be combined or presented separately depending on the type of launching device.
  • the object of the present invention is to propose a new design of a launcher device of the type indicated in the preamble, making it possible to remedy, depending on the case, some or all of the aforementioned drawbacks.
  • the projectile offering a cross section of identical surface towards the forward and backward, is under pressure and does not move.
  • the pressure can thus increase in the front and rear chambers until it reaches a value which, at level of the front chamber, results in the application, to the sealing means, of a longitudinal force directed towards the front and exceeding the predetermined threshold for expulsion of the latter; in fact, the latter are also exposed, towards the front, to the atmospheric pressure of the open air.
  • the shutter means are expelled, without any intervention of the projectile for this purpose so that the ballistics thereof will not be affected, but from this expulsion, the atmospheric pressure is established in the front chamber while the rear chamber remains subject to the gas pressure developed by the impeller so that the projectile is now subjected to a longitudinal expulsion force.
  • the projectile is then expelled, under conditions that can be predetermined and without risk of interference with the shutter means.
  • the impeller in the front and rear chambers, it can advantageously be provided that the impeller is disposed or opens out in the front chamber, and that means of fluid communication are provided. non-return between the front and rear chambers, said communication being open from the front chamber to the rear chamber and closed from the rear chamber to the front chamber.
  • the non-return fluid communication means comprise a longitudinal passage between the projectile and the tube, and a lip seal interposed between the projectile and the tube in this passage, although other arrangements may be chosen. this effect without departing from the scope of the present invention.
  • the impeller when the impeller is thus disposed in the front chamber, it can be easily placed in the tube after the projectile, which makes it possible, without difficulty, to manufacture and store launching devices comprising the tube housing the projectile without the igniter, and to mount the igniter during use, and this quickly and without particular difficulty.
  • the sealing means can be constituted by a plug retained by said retaining means and suitably sealed with respect to the tube, which makes it possible to integrate therein. the impeller.
  • This plug to which the gas pressure prevailing in the front chamber directly applies, can be inert, that is to say play only a sealing role. It can also itself constitute a front projectile housed in the tube and capable of sliding longitudinally inside the tube, towards the front, to be expelled from it by the front end of the tube prior to the expulsion of the projectile first. cited.
  • the shutter means consist of a plug, in particular inert in the above sense, retained by said retaining means, and by a front projectile housed in the tube, interposed longitudinally between the first mentioned projectile. and the plug and capable of sliding longitudinally inside the tube, towards the front, to be expelled from it by the front end of the tube by expelling the plug prior to the expulsion of the first mentioned projectile. Then, the application of the gas pressure to the plug is carried out by means of the front projectile, suitably sealed with respect to the tube.
  • the gradual, simultaneous increase in the front and rear chambers, of the gas pressure first maintains the first-mentioned projectile in equilibrium, until the plug constituted by the front projectile or the assembly constituted by the front projectile and the plug, respectively, exposed to atmospheric pressure towards the front, receives because of this pressure a longitudinal force, directed towards the front, exceeding the predetermined threshold of ejection of the sealing means. Then, the front projectile forming a plug or the front projectile and the plug, distinct from it but pushed by it, respectively, are expelled, which opens the front chamber to the atmosphere while the rear chamber is still subjected to the gas pressure which caused the front projectile to be expelled. This then results in the expulsion of the first mentioned projectile.
  • the means for defining the rear chamber comprise at least one rear projectile housed in the tube, interposed longitudinally between the first cited projectile and the bottom and capable of sliding longitudinally inside. of the tube, towards the front, to be expelled from it by the front end of the tube, that means are provided for defining with the tube and this rear projectile, respectively each rear projectile, immediately behind the latter, another rear gas expansion chamber, and the impeller is capable of developing said gas pressure simultaneously in the front and rear chambers and in said other rear chamber, respectively each other rear chamber, to expel the rear projectile, respectively the rear projectiles successively , after the first cited projectile.
  • the impeller is disposed or opens into the front chamber and there are provided non-return fluid communication means between the front and rear chambers, said communication being open from the front chamber to the rear chamber and closed from the rear chamber to the front chamber, provision is advantageously made for ensuring the simultaneous establishment of the gas pressure in the or each other rear chamber, in comparison with the first-mentioned front chamber and the rear chamber, by providing other means of non-return fluid communication between the first-mentioned rear chamber and said other rear chamber, respectively between each other rear chamber and the other immediately following rear chamber , said communication being open from the first cited rear chamber to said other rear chamber, respectively from each other rear chamber to the immediately following other rear chamber, and closed from said other rear chamber to the first cited rear chamber, respectively from each other rear chamber towards said immediately preceding other rear chamber.
  • said other non-return fluid communication means may include a longitudinal passage between the rear projectile, respectively each rear projectile, and the tube, and a joint. with lip interposed between the rear projectile, respectively each rear projectile, and the tube in this passage, this embodiment constituting however only one nonlimiting example.
  • the means for defining the rear chamber may also include only the bottom of the launcher tube, in the absence of rear projectile.
  • the means for respectively defining the front chamber, the rear chamber, said other rear chamber, each other rear chamber comprise a respective perforated longitudinal spacer to allow the respective fluid communication, which allows, by a simple choice of spacers of appropriate length, to adjust the different internal ballistics, therefore the sequencing of the shooting and the exit speeds of the different projectiles.
  • the fields of application of a launcher device according to the invention can be varied. Indeed, the first mentioned projectile, the front projectile, or each rear projectile can be chosen from a group comprising military projectiles, fireworks projectiles; decoy projectiles, test projectiles, these examples being in no way limiting.
  • Figures 1 to 3 illustrate three launching devices according to the invention, in section through a longitudinal plane including a longitudinal axis of the launching tube, namely respectively a device with two projectiles including a front projectile, a device with two projectiles including a rear projectile , and a device with three projectiles including two rear projectiles, in addition to the first mentioned projectile.
  • devices comprising a single projectile, namely the first mentioned projectile, without front projectile or rear projectile, or the first mentioned projectile, a front projectile and at least one rear projectile, being indeed understood that the number of rear projectiles can be chosen at will, and in particular be greater than two, in the presence as in the absence of a front projectile.
  • Each of the devices illustrated comprises a longitudinal launcher tube 1, having a longitudinal axis 2 towards which it is delimited by an inner peripheral face 3 cylindrical of revolution around this axis with a constant diameter, determining the size of the launcher device.
  • the tube 1 is determined by an outer peripheral face also cylindrical of revolution around the axis 2, with a diameter greater than that of the face inner peripheral 3, it being understood that the shape of this outer peripheral face 4 is not critical with regard to the present invention.
  • the launcher tube 1 thus defined is gas-tight in particular.
  • the launcher tube 1 has a rear end 6 permanently closed, in leaktight manner, by a transverse bottom 7 which, when the present invention is implemented and as it is illustrated, can be full and devoid of any impeller or device for initiating such an impeller.
  • the bottom 7 has the shape of a transverse washer, of revolution about the axis 5 and having in particular towards the front, that is to say towards the inside of the launcher tube 1, a flat transverse face 8.
  • the launcher tube 1 has an open end 9, at which the inner peripheral 3 and outer 4 faces are connected by a transverse edge 10 which is annular, planar, of revolution around axis 2.
  • this front end 9 is sealed off by a removable plug 11 having for example the shape of a transverse washer, of revolution about the axis 2.
  • the plug 11 is delimited by a cylindrical outer peripheral face 12, of a diameter substantially identical to that of the inner peripheral face 3 of the tube 1 in which the plug 11 is fitted, at the front end 9 of the tube 1, in conditions such that a guide contact with relative longitudinal sliding is established between the faces 12 and 3.
  • the face 12 is hollowed out of an annular groove 13, of revolution around the axis 2, housing an O-ring 14 thus retained on the plug 11 and placed in sealing contact with the inner peripheral face 3 of the tube 1 to seal the plug 11 vis-à-vis the latter, by opposing only a known obstacle to the relative sliding of the plug 11 and the tube 1.
  • the pin 16 of which preferably several angularly distributed copies are provided around the axis 2 and respectively engaged in blind holes 15 and bores 17 also distributed thus around this axis, works in shearing between the plug 11 and the tube 1, and retains the plug 11 fitted in the tube 1, without possibility of relative movement, as long as the plug 11 is not subjected to a longitudinal force, towards the front, exceeding a predetermined threshold but breaks when the predetermined threshold is reached, to authorize the expulsion of the plug 11 towards the before under the effect of this effort.
  • the plug 11 when it is thus fitted inside the tube 1, defines therewith a gas-tight enclosure 21.
  • a projectile 22 which is found identically in FIGS. 1 to 3 and which may be the only projectile of the device launcher, in a manner not illustrated but easily deductible, by a person skilled in the art, from the illustrated arrangements, or else be juxtaposed longitudinally to at least one other projectile also housed inside the sealed enclosure 21, on the basis of a projectile front 23 of different external conformation, as shown in FIG. 1, and / or of at least one rear projectile 24 meanwhile of similar external conformation, as shown in FIGS.
  • the single projectile 22 or the assembly formed by the projectile 22, the front projectile 23 and / or the rear projectile 24 possibly provided in several copies is calibrated longitudinally, against any longitudinal movement at the inside the tube 1 as long as the plug 11 is fitted therein and retained by the pins 16, between the face 8 of the bottom 7 and the face 18 of the plug 11, just as any relative transverse movement is avoided.
  • the projectile 22 is defined respectively towards the front and towards the rear by transverse, flat faces 25, 26 in the form of a disc, which are connected in the direction of 'a distance with respect to the axis 2, to an outer peripheral face 27 cylindrical of revolution around this axis 2.
  • the outer peripheral face 27 has a diameter less than that of the inner peripheral face 3 of the launcher tube 1, but wedges integral with the outer peripheral face 27 of the projectile 22 and regularly distributed angularly around the axis 2, on the one hand close to the front face 25 as illustrated in 28 and on the other hand close to the rear face 26 as illustrated in 29, ensure coaxiality of the projectile 22 and the launcher tube 1 without oppose relative longitudinal sliding when the plug 11 has been expelled.
  • annular groove 31 of revolution around the axis 2 In a longitudinally localized area of the outer peripheral face 27, for example in the immediate vicinity of the rear face 26, between the latter and the shims 29 is arranged in the face 27 an annular groove 31 of revolution around the axis 2.
  • this groove 31 fits, in an integral manner with the projectile 22, an annular seal 32 having a general shape of revolution around the axis 2 and comprising two lips defining a U or a V open towards the rear and closed towards the front, when this joint 32 is seen in section through any plane including the axis 2, at the rate of a lip 33 housed in the groove 31 in conditions suitable for securing to the projectile 22 and a lip 34 bearing elastically on the inner peripheral face 3 of the launcher tube 1, without constituting an obstacle sensitive to the possibility of relative longitudinal sliding, so as to create a sealing between the gasket 32 and the launcher tube 1 against a gas passage in a direction going from the rear towards the front, that is to say from the rear face 26 towards the front face 25 , by
  • the sealed chambers 35 and 36 are moreover delimited by means which differ according to embodiments of the launcher device illustrated respectively in FIGS. 1, 2, 3, which will now be described successively.
  • the rear chamber 36 is delimited, in addition by the rear face 26 of the projectile 22 and the inner peripheral face 3 of the launcher tube 1, by the face 8 of the bottom 7 thereof.
  • a longitudinal spacer 37 is inserted longitudinally between the faces 26 and 8, having the general shape of a tubular wall, of revolution about the axis 2, and provided with large openings 38 allowing fluid communication between the chambers 35 and 36 through game 30.
  • the wall forming the spacer 37 is delimited by a peripheral face, respectively external 39 or internal 40, cylindrical of revolution around the axis 2 with a smaller diameter to the respective diameters of the inner peripheral face 3 of the launcher tube 1 and of the outer peripheral face 27 of the projectile 22 and, upwards, these two faces 39 and 40 are connected to each other by an annular edge 41, transverse, of revolution around the axis 2 and serving as a flat support, towards the rear, to the face 26 of the projectile 22; towards the rear, the two faces 39 and 40 are connected to each other by another edge 42 also annular, transverse, of revolution about the axis 2, which edge 42 rests flat on the face 8 of the bottom 7.
  • the coaxiality of the spacer 37 with respect to the launcher tube 1 and the projectile 22 can be ensured by various means, in particular by securing with the projectile 22 or with the bottom 7, a transverse setting relative to the peripheral face interior 3 of the launcher tube 1, a longitudinal interlocking on or in a suitable counterpart of the projectile face 26, in a manner not illustrated but easily conceivable by a person skilled in the art, or even by longitudinal interlocking on or in a suitable counterpart of the face 8 of the bottom 7, in particular by longitudinal interlocking on a localized protuberance 43 of the face 8 of the bottom 7 as illustrated, which corresponds to a particularly simple shape of the spacer 37 and to a particularly great ease of placing in place of the latter inside the launcher tube 1 before placing the projectile 22 there.
  • the front chamber 35 is itself delimited, in addition by the front face 25 of the projectile 22 and the inner peripheral face 3 of the launching tube 1, by the front projectile 23 and more precisely by a transverse, planar face 51 which the latter presents towards the back.
  • a longitudinal spacer 44 is interposed longitudinally between the face 51 of the front projectile 23 and the face 25 of the projectile 22 a longitudinal spacer 44 at all points similar to the spacer 37 and having in particular like the latter large openings 45 not impeding the passage gas.
  • This spacer 44 is supported flat respectively against one and the other of the faces 25 and 51 by virtue of an outer diameter smaller than that of the latter and is retained in the coaxial position, relative to the projectiles 22 and 23 and relative to the launcher tube 1, by one any of the means mentioned with regard to the spacer 37, and for example by longitudinal interlocking on a localized protuberance 46 of the face 25 of the projectile 22, which results in the same simplicity of manufacture of the spacer 44 and the same ease of fitting in place of the latter after the projectile 22 and before the projectile 23, inside the launcher tube 1.
  • the projectile 23 is delimited by another transverse, flat face 47 which, due to an appropriate longitudinal dimensioning of the two projectiles 22 and 23 and the two spacers 37 and 44, compared to the distance separating the face 18 of the plug 11 longitudinally from the face 8 of the base 7, is applied flat against the face 18 of the plug 11 when the latter occupies the position d 'fitting into the tube 1 and retention by the pins 16, illustrated in Figure 1.
  • the faces 51 and 47 are connected to an outer peripheral face 48 of the projectile 23, which mutually connects these faces 44 and 47 and has a cylindrical shape of revolution around the axis 2, with a diameter corresponding substantially to that of the inner peripheral face 3 of the launcher tube 1, which provides guidance for relative sliding lon gitudinal.
  • the face 48 is hollowed out with an annular groove 49 of revolution around the axis 2 and housing an O-ring 50 ensuring a sealing of the outer peripheral face 48 of the projectile 23 vis-à-vis the inner peripheral face 3 of the launcher tube 1 without constituting a sensitive obstacle to relative longitudinal sliding.
  • the assembly formed by the front 35 and rear 36 chambers, as well as by the clearance 30 between the projectile 22 and the launcher tube 1, defines a sealed volume thanks to the presence of the seal 50, with the possibility of gas circulation. from chamber 35 to chamber 36 via clearance 30, without the possibility of passing in the opposite direction.
  • This characteristic is used, in this embodiment of the present invention, to cause a sequential expulsion of the projectile 23 and of the projectile 22, by means of gases generated in a controlled manner, in the front chamber 35, by an impeller 52 housed therein, as illustrated, or placed outside it but opening into it, in a manner not illustrated but easily conceivable by a Tradesman.
  • This impeller 22 is advantageously placed coaxially, inside the spacer 44, and it is preferably secured to one or the other of the projectiles 22 (as illustrated) and 23 or also to the spacer 44 , by any appropriate means the choice of which falls within the normal abilities of a person skilled in the art.
  • the projectile 22 is then placed in equipression but the assembly formed by the projectile 23 and the plug 11, exposed to atmospheric pressure in particular towards the front, is subjected to a thrust in the direction 5.
  • this thrust due of the increase in the gas pressure in the chambers 35 and 36, comes to exceed the shearing force of the pins 16, these break and suddenly release the plug 11, which is expelled forward via of the projectile 23 itself expelled forward.
  • the projectile 22 is then exposed, towards the front, to atmospheric pressure whereas, due to the presence of the seal 32 which prevents the gases under pressure from escaping from the chamber 36, it remains subjected to the gaseous pressure rear. This results in the application, to the projectile 22, of a forward expulsion force, and the projectile 22 is in turn expelled from the launcher tube 1.
  • this expulsion namely in particular its sequencing and the respective speeds of the projectiles 22 and 23, can be controlled by influence on the parameters indicated above, namely in the easiest way by choosing the respective longitudinal dimensions of the spacers 37 and 44, determining the respective volumes of the rear chambers 36 and front 35.
  • the delimitation of the chamber 35 immediately in front of the projectile 22, which is found identically, is ensured by the face 25 of the latter, the outer peripheral face 3 of the launcher tube 1, and the faces 18, 19, 20 of the plug 11 of which, for example, the corresponding spacer 44, which is found identically, can be made integral, for example by localized embedding as illustrated.
  • the front chamber 35 also houses in this case the controlled impeller 52, which can then be either fixed to the projectile 22 or to the spacer 44, as illustrated in solid lines, or integrated into the plug 52, as shown in FIG.
  • the chamber 36 remains delimited by the face 26 of the projectile 22 and the external peripheral face 3 of the tube 1, but it is moreover not delimited by the face 8 of the bottom 7 of the launcher tube 1 , but by the rear projectile 24 on which the projectile 22 is supported, by its face 26, by means of the spacer 37 and which itself is supported on the face 8 of the bottom 7 by a longitudinal spacer 53 in all point similar to the spacer 37 and having in particular wide openings 54 at all points comparable to the wide openings 38 of the spacer 37, in order to allow an unhindered passage of gas.
  • the projectile 24 is itself at all points similar to the projectile 22 as regards its external conformation and, in particular, is delimited by front faces 55, rear 56 and external peripheral 57 at all points similar to the faces 25, 26, 27 of the projectile 22, respectively, except that the diameter of these faces may be slightly different from that of the faces 25, 26 and 27 and that the longitudinal dimension of the projectile 24 between its faces 55 and 56 may be different from the dimension of the projectile 22 between its faces 25 and 26, the projectiles 22 and 24 can also be both of a different nature and of an identical nature.
  • the front face 55 of the projectile 24 advantageously comprises a protuberance 58 at any point similar to the protuberance 46 of the front face 25 of the projectile 22 while the face 56 may be strictly planar, perpendicular to axis 2, and rest flat on the spacer 54 resting itself flat on the face 8 of the bottom 7, on which it is centered by the protuberance 43.
  • the outer peripheral face 57 of the projectile 24 defines an annular clearance 59 with the inner peripheral face 3 of the launcher tube 1, and it is wedged transversely relative to this inner peripheral face 3 by shims 30, 61 at all points similar to wedges 28 and 29, respectively, so that the projectile 24 is guided in longitudinal sliding inside the tube 1 while being wedged transversely, on the one hand, and that the game 59 constitutes a gas passage between the chamber 36 and a chamber which the spacer 53 preserves behind the projectile 24, and which is more precisely defined by the rear face 56 of the latter, the face 8 of the bottom 7 and the zone of the inner peripheral face 3 of the tube 1 situated between these faces 56 and 8 due to the presence of the spacer 53.
  • a lip seal 63 similar in all points to the lip seal 32, oriented like it and retained like it in a transverse annular groove 64 arranged in the outer peripheral face 57 of the projectile 24 between the shims 61 closest to the face 56 and this face 56, authorizes a passage of gases only from chamber 36 to chamber 62, and on the other hand prohibits any passage in return from chamber 62 towards chamber 36.
  • FIG. 2 operates as follows, this device initially presenting itself in the illustrated state, in which the projectiles 22 and 24 and the spacers 44, 37, 53 are immobilized longitudinally , inside the sealed enclosure 21, by the plug 11 retained by the shear pins 16.
  • the impeller 52 When the impeller 52 is actuated, the latter causes a gaseous release which propagates from chamber 35 towards chamber 36, and from the latter towards chamber 62, which places the interior of enclosure 21 at uniform pressure, and in particular places the projectiles 22 and 24 in equilibrium, which does not subject them to any longitudinal force tending to expel them.
  • the chamber 35 is thus placed at atmospheric pressure, to which the face 25 of the projectile 22 is therefore exposed, while the face 26 of the latter remains exposed to the aforementioned gas pressure, the gas being unable to escape towards the front due to the presence of the gasket 32.
  • the chambers 36 and 62 then remain at the same pressure, so that the projectile 24 is not subjected to any longitudinal expulsion force, but the projectile 22, subjected to such a force, is expelled.
  • the chamber 36 opens to the open air, so that the face 55 of the projectile 24 is exposed to atmospheric pressure, while the aforementioned gas pressure still prevails in the chamber 62, the gas being unable to escape from it. escape due to the presence and shape of the seal 63.
  • the projectile 24 is therefore therefore also subjected to a longitudinal expulsion force, and fired in turn.
  • the parameters of this expulsion are those indicated in the preamble.
  • the conditions for successive firing of the projectiles 22 and 24 can be influenced by the choice of an appropriate longitudinal dimensioning of the spacers 37, 44, 53 determining the respective volumes of the chambers 36, 35, 62.
  • FIG. 3 illustrates a launcher device in every point similar to that of FIG. 2, except that a second projectile 24, analogous to the aforementioned projectile 24 as regards its external conformation but of identical or different nature, is interposed between the spacer 53 placed immediately behind it and the face 8 of the bottom 7, against which this other projectile 24 is supported by means of another spacer 53, largely perforated as indicated at 54, so as to define with the launcher tube 1 and the bottom 7 another sealed chamber 62.
  • the seal 63 of the other projectile 24 makes it possible to place this other chamber 62 at the same gas pressure as the chamber 62 firstly t cited and that the chambers 36 and 35 when the gas pressure supplied by the impeller 52 increases, while it prevents this other chamber 62 from losing this gas pressure, and therefore causes the application to the other projectile 24 of a longitudinal force of expulsion, towards the front, when the front face 55 of this other projectile is exposed to atmospheric pressure, after successive expulsion of the plug 11, of a possible projectile 23, of the projectile 22 and of the projectile 24 first mentioned.
  • This charge a few non-limiting examples of positioning of which have been illustrated in dashed lines, would be chosen to be of a type such that it is sensitive to the gaseous emission of the impeller 52, for example the temperature of the gases emitted by this last or at the gas pressure corresponding to the effort of expelling the plug 11, and suitably delayed to add its effects to those of the pressure of the gases generated by the impeller 52 on the projectile 22 or 24 placed immediately in front, during of its expulsion, and on the projectile (s) 24 possibly placed behind for their subsequent expulsion.

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  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Toys (AREA)
EP95401690A 1994-07-19 1995-07-17 Pyrotechnische Vorrichtung zum Abschuss von mindestens einem Geschoss Expired - Lifetime EP0694753B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9408896 1994-07-19
FR9408896A FR2722872B1 (fr) 1994-07-19 1994-07-19 Dispositif pyrotechnique de lancement d'au moins un projectile

Publications (2)

Publication Number Publication Date
EP0694753A1 true EP0694753A1 (de) 1996-01-31
EP0694753B1 EP0694753B1 (de) 1998-04-29

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US (1) US5623113A (de)
EP (1) EP0694753B1 (de)
CA (1) CA2154110C (de)
DE (1) DE69502247T2 (de)
FR (1) FR2722872B1 (de)

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CN101226044B (zh) * 2008-02-20 2011-05-18 陈延文 射程控制方法及其装置

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EP0694753B1 (de) 1998-04-29
FR2722872B1 (fr) 1996-10-04
DE69502247T2 (de) 1998-12-03
FR2722872A1 (fr) 1996-01-26
CA2154110A1 (fr) 1996-01-20
US5623113A (en) 1997-04-22
CA2154110C (fr) 2003-12-30
DE69502247D1 (de) 1998-06-04

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