FR2624962A1 - Projectile head intended for the dispersal of a dispersible substance, such as an incendiary composition - Google Patents

Projectile head intended for the dispersal of a dispersible substance, such as an incendiary composition Download PDF

Info

Publication number
FR2624962A1
FR2624962A1 FR8717661A FR8717661A FR2624962A1 FR 2624962 A1 FR2624962 A1 FR 2624962A1 FR 8717661 A FR8717661 A FR 8717661A FR 8717661 A FR8717661 A FR 8717661A FR 2624962 A1 FR2624962 A1 FR 2624962A1
Authority
FR
France
Prior art keywords
envelope
pyrotechnic
transverse
incendiary
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
Application number
FR8717661A
Other languages
French (fr)
Other versions
FR2624962B1 (en
Inventor
Jean Baricos
Denis Dilhan
Georges Mirguet
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.)
LACROIX E TOUS ARTIFICES
Original Assignee
LACROIX E TOUS ARTIFICES
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 LACROIX E TOUS ARTIFICES filed Critical LACROIX E TOUS ARTIFICES
Priority to FR8717661A priority Critical patent/FR2624962B1/en
Publication of FR2624962A1 publication Critical patent/FR2624962A1/en
Application granted granted Critical
Publication of FR2624962B1 publication Critical patent/FR2624962B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42BEXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/02Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
    • F42B12/36Projectiles, 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
    • F42B12/46Projectiles, 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
    • F42B12/50Projectiles, 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 by dispersion

Abstract

The present invention relates to a projectile head intended for dispersal of a dispersible substance, such as an incendiary composition. The head 3 comprises a longitudinal casing 8 capable of breaking under the effect of an internal pressure and enclosing the dispersible composition 41; it is characterised in that it comprises controlled mechanical means, such as a piston 42, capable of being displaced longitudinally in a controlled manner within the casing 7, and means 21 for controlling the mechanical pressurising means; in the case of an incendiary head, the pressurisation and expulsion of the incendiary composition 41 from the casing 7 immediately prior to the igniting of this incendiary composition 41. The dispersal of the dispersible substance, such as an incendiary composition, and the ignition of the latter take place reliably in a homogeneous manner. <IMAGE>

Description

 The present invention relates to a projectile head, intended for the dispersion of a dispersible substance such as an incendiary composition.

 The term “dispersible substance” is understood generally to mean any substance in the form of a liquid, a gel, a paste, a powder, granules, or any other form suitable for dispersion; although the invention relates more particularly to the dispersion of an incendiary composition, it can also be applied to the dispersion of dispersible substances of another nature, and for example water, disinfectant, insecticide Or other.

 When it is desired to disperse such substances from a projectile head, they are enclosed in a longitudinal envelope capable of breaking or opening under the effect of internal pressure and causing the dispersion of this substance by causing the envelope to rupture or open, generally by means of pyrotechnic means, which releases the dispersible substance, the dispersion of which then takes place, for example under the effect of the shock resulting from the impact of the projectile against a target, or under the effect of the shock resulting from the actuation of the pyrotechnic means of rupture or opening of the envelope, or even for aerodynamic reasons if the rupture or the opening of the envelope occurs in flight.

 A common drawback of known techniques for dispersing substances such as incendiary compositions from projectile heads lies in the more or less random nature of the dispersion which can be incomplete both in the sense that an indeterminate part of the substance dispersible can remain in the envelope and in the sense that, except when it is liquid, this dispersible substance can leave the envelope in coherent packets and not dispersed.

 The object of the present invention is to remedy this drawback and, to this end, the present invention provides a projectile head, intended for the dispersion of a dispersible substance such as an incendiary composition and comprising a closed longitudinal envelope capable of rupture under the effect of an internal pressure and containing said dispersible composition, characterized in that it comprises controlled mechanical means for pressurizing the dispersible substance in the envelope and means for controlling the mechanical means of placing in pressure.

 Preferably, the mechanical pressurizing means comprise a transverse piston disposed near a first transverse end of the envelope, guided in longitudinal translation in said envelope and having a transverse face in contact with the dispersible substance, and controlled means for longitudinal propulsion of the piston in the envelope, towards the dispersible substance and towards a second transverse end of the envelope, and the means for controlling the mechanical pressurizing means include means for controlling the propelling means .

 It is easily understood that under the action of the controlled means of pressurization, and more particularly of the piston entering into their composition according to a preferred embodiment, the dispersible substance can be effectively removed from the envelope after the latter has broken, and that the coherent blocks possibly forming in the case of a substance having a form other than liquid break to ensure optimal dispersion under the coercive action of the controlled mechanical means of pressurization.

 In a particularly simple manner, the propulsion means can be pyrotechnic, in which case the control means of the propulsion means comprise an igniter and a pyrotechnic chain for transmitting fire between said igniter and said pyrotechnic propulsion means.

Depending on the case
- the pyrotechnic propulsion means, with the piston, are located near the first transverse end of the envelope,
The igniter is disposed near the second transverse end of the envelope and the fire transmission chain comprises a longitudinal tubular channel which passes axially through the envelope and on which the piston is guided in longitudinal translation, or else
- The pyrotechnic means of propulsion, with the piston, and the igniter are located near the first transverse end of the envelope.

 This first transverse end can be placed in front of the dispersible substance, with reference to a determined longitudinal direction of progression of the projectile, or even be placed behind the dispersible substance with reference to this same direction; this second possibility is currently preferred in an application to an incendiary head, insofar as the putting into service of the pyrotechnic means of propelling the piston then results in the application, to the envelope, of a reaction tending to slow down the projectile, and it is known that a dispersion of an incendiary composition at low speed is preferable to a dispersion at rapid speed.

Said transverse face of the piston can be flat, or even be convex to facilitate the dispersing effect; the dispersion is further improved if, in a manner known per se, the envelope has distributed fracture primers, located in a longitudinal wall and preferably near the second transverse end of the envelope; this ensures as far as possible a determined dispersion spectrum of the dispersible substance; according to a particularly developed embodiment of the invention, the envelope comprises
internally, facing the incipient fractures, tubular conduits
which diverge backwards mutually, with reference to a sense
longitudinal determined projectile progression, which improves
also the dispersiori and its predetermined character.

We find these advantages of the invention whatever the
nature of the substance to be dispersed.

In the particular case where this substance is constituted by
an incendiary composition, the present invention may further exhibit
other specific advantages so that besides a projectile head
intended for the dispersion of any dispersible substance, the
present invention also provides an incendiary head for a projectile,
of the type comprising a closed longitudinal envelope capable of
rupture under the effect of internal pressure, an incendiary composition
dispersible housed in the envelope, controlled pyrotechnic means
of ignition of the incendiary composition and of the control means
pyrotechnic means of ignition, characterized in that
includes controlled mechanical means for pressurizing the
incendiary composition in the envelope and means for controlling the
mechanical means for pressurizing, functionally linked to the means for controlling the pyrotechnic ignition means so that
a pressurization of the incendiary composition in the envelope,
causing a rupture thereof and an expulsion of the cpmposition
incendiary outside of it, immediately precedes the inflammation of the
incendiary composition by pyrotechnic means of ignition.

In this particular case, the invention has an advantage
important in that the inflammation of the incendiary composition does not come
not disturb the dispersion of it, since this dispersion has for
the main part already occurred during inflammation.

 Naturally, the choice of a piston propelled in a controlled manner as controlled mechanical means for pressurizing the incendiary composition in the envelope is also preferred in this case; advantageously, one also chooses in this case pyrotechnic means of propulsion, in which case the means for controlling the pyrotechnic means of ignition and the means for controlling the propulsion means advantageously comprise a common igniter and pyrotechnic chains for transmitting fire between d on the one hand said common igniter and on the other hand, respectively, said pyrotechnic means of propulsion, the pyrotechnic chain of fire transmission corresponding to the pyrotechnic means of ignition introducing a delay in the transmission of fire in comparison with the pyrotechnic chain of transmission of fire corresponding to the pyrotechnic means of propulsion.

 Said delay is preferably such that the ignition of the incendiary composition takes place while the piston has progressed Near the second transverse end of the envelope and that the major part of the incendiary composition has been expelled by the piston , in order not to disturb the dispersion of the incendiary composition by its inflammation.

 In the case of such an incendiary head, as moreover in the case of a projectile head intended for the dispersion of any dispersible substance, as soon as one chooses pyrotechnic means for ensuring the propulsion of the piston constituting it -even advantageously the controlled mechanical means for pressurizing the dispersible substance such as the incendiary composition, the igniter can be controlled by various means, advantageously common to the means for controlling the pyrotechnic means for igniting the incendiary composition in the case an incendiary head; for example, in the case of a projectile head comprising a warhead disposed in front of the envelope, with reference to a determined longitudinal direction of progression of the projectile, and connected by a shoulder to said envelope, these control means can advantageously include a first impact detector disposed at the front end of the warhead and a second impact detector disposed on the shoulder of the warhead, the first impact detector being able to initiate the control means during '' an impact against a comparatively hard target such as a wall or the body of a vehicle and the second impact detector being able to initiate said control means during an impact against a comparatively soft target such as a tarpaulin vehicle, to ensure an optimal effect especially in the case of an incendiary head; the control means may also include a proximity detector housed in said warhead, for controlling the igniter before the impact of the projectile against a target.

 Other characteristics and advantages of the invention will emerge from the description below, relating to three nonlimiting examples all chosen from the field of incendiary heads, as well as from the appended drawings which form an integral part of this description.

 - Figure 1 shows a perspective view of a first example of an incendiary head according to the invention, the warhead and the base of the projectile which it equips have not been shown.

 FIG. 2 shows a view of the projectile comprising the incendiary head illustrated in FIG. 1, in section through a median longitudinal plane marked in Il-Il in FIG. 3.

 - Figure 3 shows a view of this same projectile in section through a transverse plane identified at 111-111 in Figure 2.

 - Figure 4 shows a perspective view of a second example of an incendiary head according to the invention, the warhead and the base of the projectile which it equips having not been shown.

 FIG. 5 shows a view of the projectile comprising the incendiary head illustrated in FIG. I, in section through a median longitudinal plane marked in V-V in FIG. 6.

 FIG. 6 shows a view of this same projectile in section through a transverse plane marked in VI-VI in FIG. 5.

 FIG. 7 shows a perspective view of a third example of an incendiary head according to the invention, the warhead and the base of the projectile which it equips have not been shown.

 FIG. 8 shows a view of the projectile comprising the incendiary head illustrated in FIG. I, in section through a median longitudinal plane marked in VIII-VIII in FIG. 9.

 FIG. 9 shows a view of this same projectile cut by a transverse plane marked in IX-IX in FIG. 8.

 Reference will firstly be made to FIGS. 1 to 3, where I has designated by I a projectile having a general shape of revolution around a longitudinal axis 2 and comprising an incendiary head according to the invention 3, inserted longitudinally between a warhead 4, facing forwards with reference to a determined longitudinal direction 5 of progression of the projectile 1, and a base 6 placed behind the head 3 with reference to the direction 5; The warhead 4 and the base 6 can be of any type known in itself and, in particular, the base 6 can comprise means for propelling the projectile I or be deprived of such means, comprise fins or be deprived thereof, etc ...; The warhead 4 and the base 6 will therefore not be described further and we will attach more particularly to the incendiary head 3, implementing the invention.

 Like the projectile 1 as a whole, the incendiary head 3 has a general shape of revolution around the axis 2; it is delimited by a tight longitudinal envelope 7 defined by a comparatively thin peripheral, longitudinal wall 8 and by two transverse end walls 9, 10 comparatively thick and delimiting the envelope respectively towards the front and towards the rear with reference to the sense 5; the peripheral wall 8 has respectively towards the axis 2 and opposite to it an inner peripheral face 11 and an outer peripheral face 12, one and the other cylindrical of revolution around the axis 2; it is full and continuously connects the end walls 9 and 10; the wall 9 is also full, without discontinuity inside the peripheral wall 8, and it is defined respectively towards the front and towards the rear by planar transverse faces 13, 14, the latter having along the axis 2 a localized projection 15; the wall 10 is also full and continuous inside the peripheral wall 8, except for a bore 16 passing right through it along the axis 2; it is delimited respectively towards the rear and towards the front by approximately planar transverse faces 17, 18, both having around the bore 16 a hollow area, respectively 19, 20, having a shape of revolution around axis 2.

 The recessed area 19 of the face 17 receives, with interlocking and sealing, an electrical ignition device of any known type, not shown in detail, housed in the base 6; this electrical ignition device 21 comprises in particular a pyrotechnic igniter. 23 arranged along the axis 2, immediately opposite the bore 16, and safety means of known type, preventing untimely actuation of the pyrotechnic igniter 23, and shown schematically for example in the form of a transverse finger 22 detection of gun barrel exit, it being understood that any other safety device could be provided.

 The recessed area 20 of the face 18 of the wall 10 receives meanwhile, interlocking, a transverse wall 24 of a closed annular pot 25 housing a pyrotechnic composition 26 initiation; it will be noted that the pot 25 in its entirety, and in particular its transverse wall 24, has along the axis 2 an axial bore 27 extending the bore 16 towards the front with reference to the direction 5 and housing, with mutual interlocking, a longitudinal tube 28 disposed along the axis 2 and also fitting on the axial projection 15 of the face 15 of the wall 9 so as to connect the walls 9 and 10 to each other, axially, inside the peripheral wall 8; the tube 28 internally defines, in leaktight manner, a longitudinal, axial channel 29 having a first transverse end 30 immediately opposite the bore 16, in the bore 27, and a second transverse end 31 placed opposite the projection 15 from the face 15 of the wall 9, in a manner which will be described later; the two ends 30 and 31 of the channel 29 house respective pyrotechnic relays 32, 33 of which it will be noted that the first, placed opposite the bore 16, is also placed opposite the pyrotechnic igniter 23 thus placed in direct connection with this pyrotechnic relay 32; by means of a conduit 34 arranged radially, with reference to axis 2, in the wall 24 of the pot 25, this pyrotechnic igniter 23 is moreover in direct connection with one end of a pyrotechnic delay 35 having another opposite end of a pyrotechnic relay 36 emerging. as for him in the initiation pyrotechnic composition 26.

 With the exception of its wall 24 partially housed in the wall 10 of the casing 7, and apart from the bore 27 by which it envelops the tube 28, the pot 25 thus designed is completely immersed in an ignition composition, for example pulverulent 37 retained, inside the envelope 7, by a continuous annular wall 38 sealingly connecting the inner peripheral face 11 of the envelope 7 to the tube 28 and presenting towards the rear as towards the front , with reference to direction 5, transverse faces 39, 40, mutually parallel, approximately frustoconical of revolution about the axis 2 with a convexity facing forward with reference to direction 5; the face 39 is in contact with the pyrotechnic ignition composition 37 while the face 40 is in contact with the incendiary dispersible composition 41 filling the envelope 7, between the peripheral wall 8 and the tube 28, in front of the wall 40 .

 According to the present invention, towards the front with reference to direction 5, the incendiary composition 41 is not placed in contact with the wall 9, but in contact with a sealed piston 42 itself retained in contact with this wall. 9 by means of breakable pins 43 for connection with the peripheral wall 8 of the casing 7; this piston 42, arranged transversely inside the casing 7, is mounted for longitudinal sliding inside the latter, on the one hand by sealed contact with the inner peripheral face 11 of the peripheral wall 8 and on the other hand by sealed contact with a face 44 peripherally delimiting the tube 28 outside the channel 29, that is to say in the direction of a distance from the axis 2; for this purpose, the piston 42 has an axial bore 45 for receiving the tube 28 towards the rear, that is to say at the contact of the incendiary composition 41, the piston 42 has a convex transverse face 46, for example approximately frustoconical of revolution around axis 2; towards the front, directly opposite the face 14 of the wall 9, it is hollow so as to define an annular housing 47 of revolution around the axis 2, and containing a pyrotechnic propellant composition 48, for example a powder ; towards the axis 2, around the tube 28, the housing 47 is delimited by une.skirt 49, annular of revolution around the axis 2, pierced with a plurality of radial bores 50 relative to the axis 2 and regularly distributed around the latter, which bores 50 are placed opposite respectively corresponding bores 51 of the tube 28, which bores 51 connect the bores 50, that is to say the pyrotechnic composition 48, and the relay pyrotechnic 33 of the end 31 of the channel 29 of the tube 28.

 Preferably, in a zone of the peripheral wall 28 located opposite the incendiary composition 41 and preferably located closer to the wall 40 than to the piston 42, this peripheral wall 8 has incipient fractures regularly distributed around the axis 2; these fracture primers, defined for example by a localized thickening of the wall 8, can have different shapes; in the example illustrated, in the outer peripheral face 12 of the peripheral wall 8 of the casing 7 are precut three longitudinal tabs 52, 53, 54 mutually offset angularly by 1800 with reference to axis 2, each of these tongues having the same shape, described in connection with the tongue 52 with reference to Figure I; it can be seen in this figure that the tongue 52 is defined by two longitudinal grooves 55, 56 hollowed out in the outer peripheral face 12 of the peripheral wall 8 of the casing 7, which longitudinal grooves 55, 56 are connected to each other, at their anterior ends respective, with reference to sense 5, by a circumferential groove 57.

 Under these conditions, the operation of the projectile I which has just been described is as follows.

 After firing and assuming that all the safety devices have worked, to arm the electric ignition device 21, the pyrotechnic igniter 23 is put into service by any appropriate means, such as a time delay not shown, impact detection by a hard impact detector 58 placed at the front end 59 of the warhead 4 or by a soft impact detector 60 placed on a shoulder 61 for connection of the warhead 4, towards the rear, with the head incendiary 3, or a proximity detector 62 housed inside the warhead 4.

 The pyrotechnic igniter 23 thus actuated simultaneously initiates the pyrotechnic relay 32 and the pyrotechnic delay 35; the pyrotechnic relay 32 immediately initiates, by shock effect transmitted through the channel 29, the pyrotechnic relay 31 which itself immediately initiates the pyrotechnic propulsion composition 48 which, by causing gassing, causes the appearance of increasing pressure between the piston 42 and the wall 9; as soon as this pressure is sufficient to cause shearing of the pins 43, the piston 42 begins to slide longitudinally rearward inside the casing 7, which causes the incendiary composition 41 to pressurize inside this envelope 7 then, when the pressure of the incendiary composition 41 reaches a determined threshold of rupture of the envelope 7 at the level of the grooves such as 55, 56, 57 delimiting the precut tabs 52, 53, 54, these tabs gradually detach, first at their anterior end defined by the grooves such as 57 and then gradually in areas located longitudinally more and more behind; as this envelope 7 is opened by the tongues 52, 53, 54, the incendiary composition 41 urged by the face 46 of the piston 42 gradually leaves the envelope 7, in a regularly distributed manner as are tabs 52, 53, 54; the delay 35 is calculated so that it initiates the relay 36, and with it the pyrotechnic composition 26 for initiating the ignition composition 37, when the piston 42 progressively expelling the incendiary pyrotechnic composition 41 arrives in the immediate vicinity of the wall 40, that is to say after most of the incendiary composition 41 has left the envelope 7; then, the relay 36 ignites the composition 26 which itself ignites the composition 37 which, by a fireball effect destroying in particular the wall 40, ignites the relatively small amount of incendiary composition 41 remaining inside the envelope 7 and all of the incendiary composition 41 already expelled from this envelope; naturally, for this purpose, the speed of progression of the piston 42 inside the envelope 7, that is to say the speed at which the latter empties of the incendiary composition 41, must be high; the choice of the characteristics to be given for this purpose to the propellant composition 48, depending on the nature of the incendiary composition 41 and the dimensions of the incendiary head 3, can be easily determined by a person skilled in the art; advantageously, the incendiary composition 41 is in the form of a gel and the ignition composition 37 is in the form of a powder, but these examples are in no way limiting.

 We will now refer to Figures 4 to 5 where there is illustrated a second example of projectile comprising an incendiary head implementing the present invention.

This projectile 101 has many points in common with the projectile 1 described with reference to Figures I to 3 so that we find in Figures 4 to 6, to designate the same elements as in the figures
I to 3, the numerical references 2, 4, 5, 6, 21, 22, 23, 58, 59, 65, 61, 62; these common elements will therefore not be described again.

 As in the case of the example of implementation described with reference to Figures I to 3, the projectile 101 comprises an incendiary head according to the invention 103 interposed longitudinally between the base 6 and the warhead 4 and this incendiary head 103 is delimited by a waterproof envelope 107 having, like all of the projectile 101, a general shape of revolution around the axis 2; this envelope 107 has a peripheral wall 108 and a front transverse wall 109 at every point identical respectively to the walls 8 and 9 described with reference to Figures 1 to 3 so that we find the same, under the references 111, 112 , 113, 114, 115 the elements described above under the references 11, 12, 13, 14, 15 respectively.

 Thus delimited by the peripheral wall 108 in the direction of a distance relative to the axis 2 and by the wall 9 towards the front with reference to the direction 5, the casing 108 is delimited towards the rear by a transverse wall 110 full, continuous, except that it has along the axis 2 a bore 116 at any point comparable to the bore 16 and like it placed immediately opposite the pyrotechnic igniter 23 respectively towards the rear and towards the front, the wall 110 is delimited by planar transverse faces 117, 118 on its face 118 thus turned towards the front, that is to say inside the envelope 107, the wall 110 presents along the axis 2, around the bore 116, a localized projection 163 which, like the bore 27 of the pot 25 of the incendiary head 3 described with reference to Figures I to 3, receives and immobilizes by interlocking a transverse end of a longitudinal, axial tube 128 at any point similar to the tube 28 and, like the latter, fitted onto the projection 115 from the face 114 of the wall 109; like the tube 28, the tube 128 internally delimits an axial channel 129 having a first end 130 facing the bore 116 of the igniter 23 and a second end 131 facing the projection 115, one and the other of these ends 130 and 131 housing a respective pyrotechnic relay, 132, 133.

 Unlike the wall 10, the wall 110 is placed directly in contact with the incendiary pyrotechnic composition 141 housed in the envelope 107, and this by its face 118; we note that at the junction of the wall 110 with the wall 108, this face 118 is connected to the face 111 of the wall 108 by a face 164 of a fillet 165, which face 164 is frustoconical of revolution around the axis 2 and concave; in the fillet 165 are drilled, along respective axes 166 regularly distributed around the axis 2 and diverging rearwardly relative to the latter, identical bores 167 thus opening on the one hand towards the front and towards the axis 2 in the face 164 and on the other hand rearward and in the direction of a distance with respect to the axis 2 opposite localized zones 168, of lesser thickness, of the wall 108, which localized zones 168 constitute privileged rupture zones of this wall 108; ! s bores 167 are for example cylindrical of revolution about their axis 168, other shapes can be chosen without departing from the scope of the present invention.

 Inside the envelope 107, the incendiary composition 141 is thus enclosed between the wall 110, the areas of the wall 108 adjacent to this wall 110, and a plane transverse face 146, turned towards the rear, of a sealed piston 142 comparable to piston 42 in particular in that it is directly adjacent to the wall 109 and mounted with longitudinal sliding with sealing on the one hand against the face 111 of the wall 108, with respect to which it is retained by pins shearable 143, and on the other hand on the outer peripheral face 144 of the tube 128, at any point comparable to the face 44 of the tube 28, by a bore 145 at any point comparable to the bore 45.

 Like the piston 42, the piston 142 has forwardly a housing 147 for a pulverulent propellant pyrotechnic composition 148, and the housing 147 delimited towards the axis 2 by an annular wall 149 communicates with the relay 133 of the end 131 of the tube 128 by orifices 150 of the wall 149 and corresponding orifices 151 of the tube 128, in any way similar to what has been described with regard to the housing 47 and its communication with the relay 33 of the end 31 of tube 128; in particular, the holes 150 and 151 are regularly distributed around the axis 2 to allow optimal communication between the relay 133 and the pyrotechnic composition 148.

 The piston 142 on the other hand has a difference compared to the piston 42 in that it itself contains the pyrotechnic composition 126. initiation and the pyrotechnic composition 137 for ignition, corresponding respectively to compositions 26 and 27 described with reference to embodiments of Figures I to 3.

 More specifically, the piston 142 is hollow between the housing 147 of the pyrotechnic propulsion composition 148 and its face 146 in contact with the incendiary composition 141, so as to delimit two annular, coaxial, closed chambers 169 and 170, receiving respectively the composition initiation 126 and inflammation composition 137; chambers 169 and 170 are delimited, between a transverse wall 171 of the piston 142 defining the face 146 of the latter and a transverse face 172 of the piston delimiting the housing 147 towards the rear, with reference to direction 5, by tubular walls delimited by cylindrical faces of revolution around the axis 2, namely a radially outer wall 173, running along the wall 108 with which it is in sliding contact with sealing of a radially inner wall 175 running along the tube 128 with which it is in sliding contact with sealing by the bore 145, and a radially intermediate wall 174; it will be noted that the walls 173, 174, 175 are thinner than the walls 171 and 172, and in practice of a thickness comparable to that of the wall 108; the walls 173 and 174 delimit with the walls 171 and 172 the chamber 170 for receiving the pyrotechnic composition 137 while the walls 174 and 175 delimit with the walls 171 and 172 the chamber 169 housing the composition 126; chambers 169 and 170 are closed on all sides, except that chamber 169 communicates with housing 147 of composition 148 by means of a pyrotechnic delay 135 and a pyrotechnic relay 136, at all points analogous to delay 35 and relay 36 described with reference to Figures I to 3; the delay 135 has one end in direct contact with the propellant pyrotechnic composition 148 in the housing 147 and a second end in contact with the relay 136, meanwhile housed in the chamber 169 in contact with the pyrotechnic composition 126.

Under these conditions, as soon as the igniter 23 has been put into service by any of the means 58, 60, 62 described above, or even by other means, this igniter 23 initiates the relay 132 of the end 130 of the tube 128, which relay 132 initiates itself immediately, by shock effect, the relay 131 which ignites the pyrotechnic propellant composition 148; this causes a release of gas which, when its pressure between the piston 142 and the wall 1-09 reaches a threshold
predetermined sufficient to cause the pins 143 to break,
causes a longitudinal progression of the piston 142 towards the rear by
relative to the casing 107, with progressive pressurization of the incendiary composition 141 between the face 146 of the piston 142 and the faces
111, 118, 164 as well as inside the conduits 167, until
produce a rupture of the wall 108 in the zones 168 placed opposite
conduits 167; then, the progression of the piston 142
causes the gradual ejection of composition 141 from the envelope
108, towards the rear, through the conduits 167 and the holes formed in the wall
108 at the level of zones 168.

Simultaneously with the inflammation of the pyrotech composition
propulsion pic 148, delay 135 is initiated; it is calculated to initiate
itself the relay 136, that is to say the composition 126 itself causing the ignition of the composition 137, while the piston 142
arrives close to face 118, and more precisely substantially to the
junction between the face 111 of the wall 108 and the face 164 of the fillet 165;
the inflammation of compositions 126 and 137 s is accompanied by an effect of
fireball, with bursting of the piston 142 and of the casing 107, which
initiates the remainder of incendiary composition 141 found inside
the envelope as well as the incendiary composition 141 distributed around the
projectile 101 through conduits 167.

In the case of this embodiment as in the case of
that which has been described with reference to FIGS. 1 to 3, the dimensioning and
the choice, for this purpose, of the various components of the incendiary head 103
are of the normal aptitude of a skilled person, the speed
of ejection of incendiary composition 141 and of its inflammation
constituting an imperative condition for the proper functioning of the head
incendiary 3 or 103.

 Naturally, in the case of the embodiment of FIGS. 4 to 6, one could give the face 146 of the piston 142 placed in contact with the incendiary composition 141 the convex shape described with respect to the face 46 of the embodiment illustrated in the figures. 1 to 3, give the face 118 of the wall 110 the convex shape described with respect to the face 40 of the wall 38, and replace the fillet assembly 165 - conduit 167 - localized rupture zones 168 with precut tabs of the type described under references 52, 53, 54 in connection with the embodiment of Figures I to 3; similarly, one could adopt in the case of the embodiment illustrated in FIGS. 1 to 3 a mode of arrangement of privileged rupture zone comprising a fillet similar to the fillet 165 but then located at the junction between the face 40 of the wall 38 and the face 11 of the wall 8? with conduits and localized zones of privileged rupture at all points analogous respectively to conduit 167 and to zones 168, and give the face 46 of the piston 42 and the face 40 of the wall 38 the plane conformation described with regard to the faces 146 and 118, respectively.

 One could also have the ignition device 21 not behind the casing 7 or 107, but in front thereof, in the warhead 4, in the case of an electric ignition device or in the case of any other device, in particular percussion device, then placing the pyrotechnic igniter 23 opposite the projection 15 or 115, respectively, suitably perforated, by closing the bore 16 rearward in the case of the embodiment of the FIGS. 1 to 3, by removing the bore 116, the tube 128, the relay 132 and the bore 145 of the piston 142 in the case of the embodiment of FIGS. 4 to 6.

 In addition, instead of being placed in the immediate vicinity of the transverse wall delimiting the envelope towards the front to progress towards the rear in a controlled manner as it has been described with reference to FIGS. I to 3 and 4 to 6, respectively, the piston for pressurizing and expelling the incendiary composition could be provided in the immediate vicinity of the transverse wall delimiting the envelope towards the rear, to progress in a controlled fashion towards the front, inside the envelope, and expelling the incendiary composition from the front of this envelope; in comparison with the positioning of the piston described with reference to Figures I to 3 and 4 to 6, such positioning is advantageous in the case of incendiary heads in that the controlled propulsion of the piston inside the envelope tends to slow down the projectile and consequently to locate longitudinally the incendiary composition expelled from the envelope so that a positioning of the piston behind the envelope is currently preferred in the case of incendiary heads on the other hand, in the case of a positioning of the piston of the type described with reference to FIGS. 1 to 3 and 4 to 6, the propulsion of the piston inside the envelope tends to accelerate the projectile, a solution which may be preferable in other cases, such as for example when it involves dispersing an insecticide or other substance over a significant part of the longitudinal trajectory of the projectile.

 Figures 7 to 9 illustrate precisely an embodiment of the invention in which the piston is placed behind the envelope, to advance forward inside it for the expulsion of the incendiary charge.

 We find in the projectile illustrated in Figures 7 to 9, identically, the elements referenced 2, 4, 5, 6, 21, 22, 23, 58, 59, 60, 61, 62, described with reference to the mode of implementation of the invention illustrated in Figures I to 3; like the projectiles described with reference to FIGS. 1 to 3 and 4 to 6, the projectile 201 illustrated in FIGS. 7 to 9 comprises an incendiary head 203 interposed longitudinally between the base 6 and the warhead 4.

 Like the incendiary heads described above, the incendiary head 203 comprises a sealed envelope 207, comprising a peripheral wall 208 at all points similar to the peripheral walls 8 and 108, and like the latter delimited by peripheral faces respectively interior 211 and exterior 212 l one and the other cylindrical of revolution around the axis 2, and two transverse end walls, namely a wall 209 delimiting the envelope 207 towards the front and a wall 210 delimiting the envelope 207 towards the back.

 The two walls 209 and 210, solid and continuous, are defined respectively towards the front and towards the rear by plane faces, perpendicular to the axis 2, namely an anterior face 213 adjacent to the warhead 4 and a face posterior 214 turned towards the inside of the envelope 207 as regards the wall 209, a face 218 turned towards the inside of the envelope 207 and a face 217 directly adjacent to the ignition device 21 as regards the wall 210.

Like the wall 110 of the embodiment illustrated in FIGS. 4 to 6, the wall 209 is connected to the wall 208 by a fillet 265 having inside the envelope, towards the axis 2, a face 264 connecting the face 214 from the wall 209 to the face 211 of the wall 208 and having a frustoconical shape of revolution around the axis 2, with an inclination such that the face 264 gradually moves away from the axis 2 towards the rear in reference to meaning 5; like the leave 165, the leave 265 is pierced, in a manner regularly distributed angularly around the axis 2, with passages 267 having in this case the form of elongated openings arranged in respective planes 268 forming with respect to the axis 2 a same angle as the respective planes 268 of the different lights 267 define geometrically a pyramid diverging towards the rear, with reference to the direction 5, so that each light 267 is oriented towards the rear in the direction of a distance from to axis 2; advantageously, the openings 267 have a rectangular section increasing in their areas respectively more and more distant from
Axis 2; they open opposite the face 211 of the peripheral wall 208 of the envelope 207 in localized zones 268 of lesser thickness of this wall 208, which zones 268 thus define zones of privileged rupture of the wall 208.

 In a position directly adjacent to the wall 210, the casing 207 contains a sealed piston 242 mounted with longitudinal sliding, with sealing, along the face 211 of the wall 208; towards the face 2i4 of the wall 209, this piston 242 has a flat transverse face 246, thus placed in contact with the incendiary composition 241 interposed between the piston 242, the wall 209, and the zones of the envelope 208 intermediate between the piston 242 and wall 209.

 Towards the rear, that is to say directly opposite the face 218 of the wall 210, the piston 242 defines an annular housing 247, of revolution around the axis 2, for a pyrotechnic propulsion composition 248 such than a powder.

 Closed towards the rear by the face 218 of the wall 210, the housing 247 is closed towards the front by a transverse wall 272 of the piston 242, which is hollow and internally defines a sealed chamber 270 for a pyrotechnic composition 237 of ignition of the incendiary charge 241, between the transverse wall 272, a transverse wall 271 placed in front of this wall 272 and defining forwards the face 246 of the piston 242, and a peripheral face 273 presenting towards the axis 2 and in the direction of a distance with respect to the latter from the respective cylindrical faces of revolution about the axis 2, which wall 273 is in sliding contact with the wall 208.

 In a position offset from the axis 2, in the wall 272 separating the chamber 270 from the housing 247 is arranged a delay igniter comprising a pyrotechnic delay 235 opening on the one hand in contact with the propellant composition 248 and on the other hand, in contact with a pyrotechnic relay 236, which is placed in contact with the composition 237 in the chamber 270; moreover, along axis 2, the wall 272 projecting towards the wall 210, inside the housing 247, a pin 276 carrying, opposite the wall 210 relative to the igniter 23, a relay 277 capable of being initiated by the igniter 23, by shock wave, through the wall 210; the relay 277 communicates with the housing 247 of the propulsion composition 248 by radial bores 278 regularly distributed around the axis 2.

 Like the pistons 42 and 142, the piston 242 is secured to the wall 208 of the casing 207 by pins 243 operating in shear, and it is sealed against the wall 208, for example by means of O-rings. suitably arranged.

 It is easy to see that, as soon as the igniter 23 has been put into service by any of the means mentioned above, this igniter 23 initiates by shock wave the relay 277 which itself initiates, by the bores 278, propellant composition 248; this generates between the wall 272 of the piston and the wall 210 of the envelope of the gases which, when their pressure is sufficient, cause the shearing of the pins 243 and, by translation of the piston 242 forwards in the envelope 207 , the compression of the incendiary composition 241 which, when it reaches a sufficient pressure, causes the envelope 208 to rupture in its zones of reduced thickness 268; the piston 242 can then advance forward in the envelope by driving out of it, via the apertures 267, the pyrotechnic composition 241.

 Simultaneously with the initiation of the pyrotechnic propulsion composition 248, the initiation of the pyrotechnic delay 235 occurs which, after a determined time such that the face 246 of the piston 242 has arrived in close proximity to the junction between the inner peripheral face 211 of the wall 208 of the envelope 207 and the face 264 of the leave 265, causes the ignition of the relay 236 which itself immediately causes the ignition of the composition 237 which, causing the piston to burst, ignites the incendiary composition 241 no only as regards the rest of the latter in the envelope 208 but also as regards the dominant part of this incendiary composition 241 already taken out of the envelope 208 by the lights 267; this inflammation of the entire incendiary composition 241 is facilitated by the fact that, during gas development from the propellant composition 248, the movement of the piston 246 forwards is accompanied by a tendency to slow down, by reaction on the wall 210, the projectile 201 in its progression in direction 5.

 Naturally, like the embodiments of the invention described above, the embodiment illustrated in FIGS. 7 to 9 is only a non-limiting example with respect to which many variants can be provided without going out the scope of the present invention; in particular, in the case of an igniter 23 placed in front of the partition 209, and solicited for example by a striker, provision could be made for transmission of the ignition order to the propellant composition 248 and the delay 235 by a tubular conduit fitted with relays, of the type described under references 28 and 128 in the case of the embodiments illustrated respectively in FIGS. 1 to 3 and 4 to 6, while providing for longitudinal sliding of the piston 242 on this tube.

Claims (32)

 1. Projectile head, intended for the dispersion of a dispersible substance (41, 141, 241) such as an incendiary composition and comprising a closed longitudinal envelope (7, 107, 207) capable of breaking under the effect of an internal pressure and containing said dispersible composition (41, 141, 241),
 characterized in that it comprises controlled mechanical means (42, 142, 242) for pressurizing the dispersible substance (41, 141, 241) in the envelope (7, 107, 207) and means (21) for controlling the mechanical pressurization means (42, 142, 242).
 2. Projectile head according to claim 1, characterized in that the mechanical pressurizing means (42, 142, 242) comprise a transverse piston (42, 142, 242) disposed near a first transverse end of the envelope (7, 107, 207), guided in longitudinal translation in said envelope (7, 107, 207) and having a transverse face (46, 146, 246) in contact with the dispersible substance (41, 141, 241) , and controlled means (48, 148, 248) for longitudinal propulsion of the piston (42, 142, 242) in the envelope (7, 107, 207) towards the dispersible substance (41, 141, 241) and towards a second transverse end of the envelope (7, 107, 207), and in that the means (21) for controlling the mechanical pressurizing means (42, 142, 242) comprise means (21) for controlling the means of propulsion (48, 148, 248).
 3. Projectile head according to claim 2, characterized in that the propulsion means (48, 148, 248) are pyrotechnic and in that the means (21) for controlling the propulsion means (48, 148, 248) comprise an igniter (23) and a pyrotechnic chain (29, 32, 33, 50, 51, 129, 132, 133, 150, 151, 277, 278) of fire transmission between said igniter (23) and said pyrotechnic means of propulsion (48, 148, 248).
 4. projectile head according to claim 3, characterized in that the pyrotechnic propulsion means (48, 148), with the piston (42, 142), are located near the first transverse end of the envelope (7, 107), in that the igniter (23) is arranged near the second transverse end of the casing (7, 107) and in that the fire transmission chain (29, 32, 33, 50, 51 , 129, 132, 133, 150, 151) comprises a longitudinal tubular channel (29, 129) which passes axially through the casing (7, 107) and on which the piston (42, 142) is guided in longitudinal translation.
 5. Projectile head according to claim 3, characterized in that the pyrotechnic propulsion means (248), with the piston (242) and the igniter (23) are located near the first transverse end of the envelope ( 207).
 6. projectile head according to any one of claims 2 to 5, characterized in that said first transverse end is placed in front of the dispersible substance (41, 141), with reference to a determined longitudinal direction (5) of progression of the projectile (1, 101).
 7. Projectile head according to any one of claims 2 to 5, characterized in that said first transverse end is placed behind the dispersible substance (241), with reference to a determined longitudinal direction (5) of progression of the projectile (201).
 8. Projectile head according to any one of claims 2 to 7, characterized in that said transverse face (146, 246) of the piston (142, 242) is planar.
 9. Projectile head according to any one of claims 2 to 7, characterized in that said transverse face (46) of the piston (42) is convex.
 10. projectile head according to any one of claims 1 to 9, characterized in that the envelope (7, 107, 207) has distributed fracture primers (52, 53, 54, 168, 268) located in a longitudinal wall (8, 108, 208).
 11. projectile head according to claim 10 in combination with any one of claims 2 to 9, characterized in that the fracture primers (52, 53, 54, 168, 268) are located near the second transverse end of the envelope (7, 107, 207).
 12. projectile head according to claim 11, characterized in that the envelope (107, 207) internally comprises, opposite said incipient fractures (168, 268), tubular conduits (167, 267) which diverge mutually towards the 'rear, with reference to a determined longitudinal direction (5) of progression of the projectile (101, 201).
 13. Projectile head according to any one of claims
I to 12, characterized in that it comprises a warhead (4) disposed in front of said envelope (7, 107, 207), with reference to a determined longitudinal direction (5) of progression of the projectile (1, 101, 201 ), and connected by a shoulder (61) to said casing (7, 107, 207) and in that the means (21) for controlling the mechanical means (42, 142, 242) for pressurizing comprise
 - a first impact detector (58) disposed at the front end (59) of the warhead (4),
 - A second impact detector (60) disposed on the shoulder (51) of the warhead (4), the first impact detector (58) being adapted to initiate said control means (21) during a impact against a comparatively hard target and the second impact detector (60) being adapted to initiate said control means (21) upon impact against a comparatively soft target.
 14. Projectile head according to any one of claims
I to 12, characterized in that it comprises a warhead (4) disposed in front of said envelope (7, 107, 207), with reference to a determined longitudinal direction (5) of progression of the projectile (1, 101, 201), and in that the means (21) for controlling the mechanical means (42, 142, 242) for pressurizing include a proximity detector (62) housed in said warhead (4).
 15. Incendiary head for projectile, of the type comprising a closed longitudinal casing (7, 107, 207) liable to rupture under the effect of internal pressure, a dispersible incendiary composition (41, 141, 24l) housed in the envelope (7, 107, 207), controlled pyrotechnic means (26, 37, 126, 137, 237) for igniting the incendiary composition (41, 141, 241) and means (23) for controlling the pyrotechnic means d '' inflammation (26, 37, 126, 137, 237),
 characterized in that it comprises controlled mechanical means (42, 142, 242) for pressurizing the incendiary composition (41, 141, 241) in the envelope (7, 107, 207), and means (21 ) for controlling the mechanical means (41, 141, 241) for pressurizing, functionally linked to the means (23) for controlling the pyrotechnic ignition means (26, 37, 126, 137, 237) so that a pressurizing the incendiary composition (41, 141, 241) in the envelope (7, 107, 207), causing it to rupture and expelling the incendiary composition (41, 141, 241) out of that -this immediately precedes the ignition of the incendiary composition (41, 141, 241) by the pyrotechnic means of ignition (26, 37, 126, 137, 237).
 16. incendiary head according to claim 15, characterized in that the mechanical pressurizing means (42, 142, 242) comprise a transverse piston (42, 142, 242) disposed near a first transverse end of the envelope (7, 107, 207), guided in longitudinal translation in said envelope (7, 107, 207) and having a transverse face (46, 146, 246) in contact with the incendiary composition (41, 141, 241), and controlled means (48, 148, 248) for longitudinal propulsion of the piston (42, 142, 242) in the envelope (7, 107, 207), towards the incendiary composition (41, 141, 241) and towards a second transverse end of the envelope (7, 107, 207), and in that the means (21) for controlling the mechanical pressurizing means (42, 142, 242) comprise means (21) for controlling the means of propulsion (48, 148, 248).
 17. Incendiary head according to claim 16, characterized in that the propulsion means (48, 148, 248) are pyrotechnic and in that the means (21) for controlling the pyrotechnic ignition means (26, 37, 126, 137, 237) and the means (21) for controlling the propulsion means (48, 148, 248) comprise a common igniter (23) and pyrotechnic chains for transmitting fire between on the one hand said common igniter (23) and on the other hand, respectively, said pyrotechnic means of ignition (26, 37, 126, 137, 237) and said pyrotechnic means of propulsion (48, 148, 248), the pyrotechnic chain of fire transmission (34, 35, 36, 129, 132, 133, 150, 151, 235, 236, 248, 277, 278) corresponding to the pyrotechnic means of ignition (26, 37, 126, 137, 237) introducing a delay in the transmission of fire in comparison with the pyrotechnic fire transmission chain (29, 32, 33, 50, 51, 29, 132, 133, 150, 151, 277, 278) corresponding to the pyrotech means propulsion nics (48, 148, 248).
 18. incendiary head according to claim 17, characterized in that said delay is such that the ignition of the incendiary composition (41, 141, 241) takes place while the piston (42, 142, 242) has progressed to the vicinity from the second transverse end of the envelope (7, 107, 207) and that the major part of the incendiary composition (41, 141, 241) has been expelled by the piston (42, 142, 242).
 19. incendiary head according to any one of claims 17 and 18, characterized in that the pyrotechnic means of propulsion (48), with the piston (42), and the pyrotechnic means of ignition (26.
37) are located respectively near the first transverse end of the casing (7) and near the second transverse end of the casing (7), in that the igniter (23) is arranged at one of said transverse ends and in that the pyrotechnic chain for transmitting fire corresponding to the pyrotechnic, respectively ignition (26, 37) or propulsion (48) means, located near the other of said transverse ends comprises a longitudinal tubular channel (29) which passes axially through the envelope (7, 107) and on which the piston (42) is guided in longitudinal translation.
 20. incendiary head according to claim 19, characterized in that the igniter (23) is disposed near the first transverse end of the envelope (7).
 21. incendiary head according to claim 19, characterized in that the igniter (23) is arranged near the second transverse end of the envelope (7).
 22. Incendiary head according to any one of claims 17 and 18, characterized in that the pyrotechnic means of propulsion (148), with the piston (142), and the pyrotechnic means of ignition (126, 137) are located at near the first transverse end of the casing (107), in that the igniter (23) is arranged near the second transverse end of the casing (107) and in that the corresponding fire transmission chains the pyrotechnic ignition means (126, 137) and the pyrotechnic propulsion means (148) have in common a longitudinal tubular channel (129) which passes axially through the casing (107) and on which the piston (142) is guided longitudinal translation.
 23. Incendiary head according to any one of claims 17 and 18, characterized in that the pyrotechnic means of propulsion (242), with the piston (242), the pyrotechnic means of ignition (237) and the igniter (23 ) are located near the first transverse end of the envelope (207).
 24. incendiary head according to any one of claims 16 to 23, characterized in that said first transverse end is placed in front of the incendiary composition (41, 141), with reference to a determined longitudinal direction (5) of progression of the projectile (1, 101).
 25. incendiary head according to any one of claims 16 to 23, characterized in that said first transverse end is placed behind the incendiary composition (241), with reference to a determined longitudinal direction (5) of progression of the projectile ( 201).
 26. incendiary head according to any one of claims 16 to 25, characterized in that said transverse face (146, 246) of the piston (142, 242) is planar.
 27. incendiary head according to any one of claims 16 to 25, characterized in that said transverse face (46) of the piston (4?) Is convex.
 28. Incendiary head according to any one of claims 15 to 27, characterized in that the envelope (7, 107, 207) has distributed fracture primers (52, 53, 54, 168, 268) located in a wall longitudinal (8, 108, 208).
 29. Incendiary head according to claim 28 in combination with any one of claims 16 to 27, characterized in that the rupture primers (52, 53, 54, 168, 268) are located near the second transverse end of the envelope (7, 107, 207).
 30. Incendiary head according to claim 29, characterized in that the envelope (107, 207) internally comprises, opposite said incipient fractures (168, 268), tubular conduits (167, 267) which diverge mutually towards the rear, with reference to a determined longitudinal direction (5) of progression of the projectile (101, 201).
 31. Incendiary head according to any one of claims 15 to 30, characterized in that it comprises a warhead (4) disposed in front of said envelope (7, 107, 207), with reference to a determined longitudinal direction (5 } of the projectile progression (1, 101, 201), and connected by a shoulder (61) to said envelope (7, 107, 207), and in that the means (21) for controlling the pyrotechnic ignition means ( 26, 37, 126, 137, 237) and the means (21) for controlling the mechanical pressurizing means (42, 142, 242) have in common
 - a first impact detector (58) disposed at the front end (59) of the warhead (4),
 - A second impact detector (60) disposed on the shoulder (61) of the warhead (4), the first impact detector (58) being adapted to initiate said control means (21) during a impact against a comparatively hard target and the second impact detector (60) being adapted to initiate said control means (21) upon impact against a comparatively soft target.
 32. Incendiary target according to any one of claims 15 to 30, characterized in that it comprises a warhead (4) disposed in front of said envelope (7, 107, 207), with reference to a determined longitudinal direction (5 ) progression of the projectile (1, 101, 201), and the means (21) for controlling the pyrotechnic ignition means (26, 37, 136, 137, 237) and the means (21) for controlling the mechanical means of pressurization (42, '142, 242) have in common a proximity detector (62) housed in said warhead (4).
FR8717661A 1987-12-17 1987-12-17 Projectile head for the dispersion of a dispersable substance such as a fire composition Expired - Fee Related FR2624962B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8717661A FR2624962B1 (en) 1987-12-17 1987-12-17 Projectile head for the dispersion of a dispersable substance such as a fire composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8717661A FR2624962B1 (en) 1987-12-17 1987-12-17 Projectile head for the dispersion of a dispersable substance such as a fire composition

Publications (2)

Publication Number Publication Date
FR2624962A1 true FR2624962A1 (en) 1989-06-23
FR2624962B1 FR2624962B1 (en) 1993-04-02

Family

ID=9357997

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8717661A Expired - Fee Related FR2624962B1 (en) 1987-12-17 1987-12-17 Projectile head for the dispersion of a dispersable substance such as a fire composition

Country Status (1)

Country Link
FR (1) FR2624962B1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2706202A1 (en) * 1993-06-08 1994-12-16 Lacroix E Tous Artifices Device for the simultaneous ejection of two fluids, particularly pyrotechnic fluids
US6105505A (en) * 1998-06-17 2000-08-22 Lockheed Martin Corporation Hard target incendiary projectile
WO2000062004A1 (en) * 1999-04-07 2000-10-19 Metal Storm Limited Projectile launching apparatus
US6860187B2 (en) 1999-04-07 2005-03-01 Metal Storm Limited Projectile launching apparatus and methods for fire fighting

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3437035A (en) * 1965-10-05 1969-04-08 Us Navy Method and apparatus for disseminating fluid from vehicle in flight
US3706151A (en) * 1970-05-01 1972-12-19 Robert M Mcneill Gun and projectile for shooting fluids
US4141294A (en) * 1969-04-28 1979-02-27 Beech Aircraft Corporation Fuel-air type bomb
GB2075155A (en) * 1980-04-24 1981-11-11 Diehl Gmbh & Co Ejector cartridge for aircraft self-protection against radar

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3437035A (en) * 1965-10-05 1969-04-08 Us Navy Method and apparatus for disseminating fluid from vehicle in flight
US4141294A (en) * 1969-04-28 1979-02-27 Beech Aircraft Corporation Fuel-air type bomb
US3706151A (en) * 1970-05-01 1972-12-19 Robert M Mcneill Gun and projectile for shooting fluids
GB2075155A (en) * 1980-04-24 1981-11-11 Diehl Gmbh & Co Ejector cartridge for aircraft self-protection against radar

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2706202A1 (en) * 1993-06-08 1994-12-16 Lacroix E Tous Artifices Device for the simultaneous ejection of two fluids, particularly pyrotechnic fluids
EP0653603A1 (en) * 1993-06-08 1995-05-17 Etienne Lacroix - Tous Artifices Sa Device for ejecting two fluids simultaneously especially pyrotechnic fluids
US5419257A (en) * 1993-06-08 1995-05-30 Etienne Lacroix Tous Artifices S.A. Device for simultaneously ejecting two fluids, in particular two pyrotechnic fluids
US6105505A (en) * 1998-06-17 2000-08-22 Lockheed Martin Corporation Hard target incendiary projectile
WO2000062004A1 (en) * 1999-04-07 2000-10-19 Metal Storm Limited Projectile launching apparatus
US6701818B1 (en) 1999-04-07 2004-03-09 Metal Storm Limited Method for seismic exploration of a remote site
US6860187B2 (en) 1999-04-07 2005-03-01 Metal Storm Limited Projectile launching apparatus and methods for fire fighting

Also Published As

Publication number Publication date
FR2624962B1 (en) 1993-04-02

Similar Documents

Publication Publication Date Title
US7299735B2 (en) Device for the disruption of explosive ordnance
CA2563391C (en) Projectile that marks the strike point
US5016536A (en) Non-lethal practice round for automatic and semiautomatic firearms
US6688032B1 (en) Rifle-launched non-lethal cargo dispenser
CA2563389C (en) Cartridge practice round
US4719859A (en) Training cartridge
ES2290118T3 (en) Artilleria project stabilized by fins.
US7004074B2 (en) Controlled fluid energy delivery burst cartridge
CA2227987C (en) Cartridged ammunition
US3565009A (en) Aimed quadrant warhead
US4714020A (en) Enabling device for a gas generator of a forced dispersion munitions dispenser
US4686905A (en) Cartridge for frangible projectile
CA2340424C (en) Self loading gun cartridge
US7278358B2 (en) Non-lethal marking bullet for related training cartridges
EP0906556B1 (en) Non-lethal projectile
AU2004209562B2 (en) Projectile with selectable kinetic energy
KR100990443B1 (en) Projectiles possessing high penetration and lateral effect with integrated disintegration arrangement
EP1297301B1 (en) A cargo unit for submunitions
US4333402A (en) Arrangement for launching interference material
US8220392B1 (en) Launchable grenade system
US3940605A (en) Chemiluminescent marker apparatus
US4706568A (en) Chemiluminescent marking warhead
US4226185A (en) Projectile with a payload
US6105505A (en) Hard target incendiary projectile
EP1285217B1 (en) Defense device, preferably self-defense device and storage unit used therein

Legal Events

Date Code Title Description
ST Notification of lapse