System for generating pyrotechnic impacts, and associated method
Patent Information
- Application Number
- CA3315840
- Authority / Receiving Office
- CA · CA
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2023-12-21
- Filing Date
- 2024-12-19
- Publication Date
- 2025-06-26
AI Technical Summary
Existing methods for simulating pyrotechnic shock environments, such as those experienced during space vehicle launches, are costly, time-consuming, and difficult to control, and often require expensive modifications or the use of explosives.
A pyrotechnic shock generation system comprising a percussion stage with a barrel and firing pin, where the barrel head has multiple housings for pyrotechnic cartridges and a striker with percussion means to simultaneously strike the cartridges, allowing for the generation of high-energy shocks.
The system effectively replicates high-energy shock conditions similar to those encountered during space launches, providing a cost-effective and controlled method for testing equipment's ability to withstand such shocks.
Abstract
Description
Description Title of the invention: Pyrotechnic shock generation system and associated method
[0001] The present invention relates to the field of testing space equipment, other equipment or devices, in order to evaluate their ability to withstand shocks and other environmental conditions. More particularly, the invention relates to a system and method for generating pyrotechnic shocks aimed at reproducing pyrotechnic type shocks similar to those experienced during the launch of a space vehicle, a satellite or similar objects.
[0002] Components and devices used on space vehicles, such as electronic components, mechanical devices, or other apparatus, must be able to withstand the rigors of a space launch, which may include extreme shock or vibration such as those caused by pyrotechnic shock events, e.g., ignition, liftoff, level separations, payload fairing separations, spacecraft separations, solid rocket motor jettisoning, or similar events. These shock environments or events are difficult to replicate or simulate. The actual use of explosives or pyrotechnic materials, detonating cords, or other explosives can be time-consuming and expensive to set up and difficult to control.Oversized, high-power electrodynamic exciters can also be used for high-energy shock simulations; however, such devices typically require expensive modifications to simulate a high-energy shock event such as those associated with a space launch.
[0003] The invention aims to overcome at least one of the drawbacks cited by proposing a simplified pyrotechnic shock generation system allowing the generation of high-energy shocks, as well as an associated method.
[0004] For this, the invention relates to a system for generating pyrotechnic shocks, the system comprising a percussion stage comprising:
[0005] - a barrel extending along a main axis,
[0006] - a firing pin configured to be moved in translation relative to the barrel along the main axis,
[0007] - the barrel comprising a barrel head,
[0008] The invention is remarkable in that the gun head comprises a plurality of housings distributed, for example symmetrically or non-symmetrically, around the main axis, each housing being configured to receive a pyrotechnic cartridge,
[0009] and in that the striker comprises percussion means configured to simultaneously strike the plurality of pyrotechnic cartridges.
[0010] The invention also provides the following features which may be taken alone or in combination with each other:
[0011] - the percussion means of the firing pin comprise a lip formed on an edge of the firing pin intended to simultaneously strike the plurality of pyrotechnic cartridges,
[0012] - the barrel head of the barrel includes a groove shaped to correspond to that of the lip,
[0013] - the lip and groove are annular,
[0014] - the center of each housing of the plurality of housings is at a first predetermined distance from the main axis, and the groove extends along a groove line around the main axis, the groove line being at a second predetermined distance, the second distance being less than the first distance,
[0015] - at least one housing of the plurality of housings comprises a first section and a second section consecutive to the first section, the first section having a first diameter, and the second section having a second diameter smaller than the first diameter, the first section being provided to receive the bead of the corresponding cartridge and the second section being provided to receive the body of the corresponding cartridge,
[0016] - said housing of the plurality of housings comprises a third section consecutive to the second section, the third section having a third diameter greater than the second diameter, the third section being provided to form a barrel chamber of the corresponding cartridge,
[0017] - the groove line passes between the first diameter and the second diameter,
[0018] - the barrel comprises a central portion extending around the main axis from the barrel head, the central portion being provided to receive the firing pin and allow its translational movement along the main axis, and the central portion comprises a housing provided to receive at least partially a compression means, the compression means being provided to disengage the firing pin from the barrel head,
[0019] - the barrel comprises a propulsion chamber of an impact means, the plurality of housings opening into the propulsion chamber,
[0020] and the system includes a mounting bracket configured to be attached to a surface to be tested, the mounting bracket being attached to the barrel,
[0021] and the propulsion chamber opening into the fixing support,
[0022] - the impact means to be propelled is attached to the barrel using a connector configured to retain the impact means in the barrel and to release the impact means when the cartridges of the plurality of pyrotechnic cartridges generate gases pushing the impact means,
[0023] - the mounting bracket includes a shock absorber arranged to be impacted by the impact means,
[0024] - the system comprises, in addition to the percussion stage, called the first percussion stage, a second percussion stage superimposed on the first percussion stage,
[0025] the second percussion stage comprising a firing pin configured to strike the first stage firing pin.
[0026] According to characteristics of the method according to the invention which can be taken alone or in combination with each other, the method can comprise the following steps:
[0027] - a step of fixing the fixing support of the pyrotechnic shock generation system,
[0028] - a step of generating a pyrotechnic shock to cause the percussion of the striker comprising said percussion means,
[0029] - a step of assembling a single-cartridge percussion stage, called the second percussion stage, said second percussion stage being designed to be superimposed on the percussion stage having the firing pin comprising said percussion means,
[0030] - a triggering step in which a triggering of the second percussion stage causes the triggering of the first percussion stage,
[0031] Other characteristics and advantages of the invention will appear on reading the non-limiting description which follows and the appended figures which schematically illustrate several embodiments of the invention.
[0032] [Fig. 1] Figure 1 shows a perspective view of a two-stage percussion pyrotechnic shock generation system, namely a first stage and a second stage, according to one embodiment of the invention.
[0033] [Fig. 2] Figure 2 represents a perspective view of the pyrotechnic shock generation system, where the first stage has been isolated to better represent its firing pin, barrel, and a mounting bracket on which the first stage is mounted.
[0034] [Fig. 3] Figure 3 represents a sectional view of Figure 2.
[0035] [Fig. 4] Figure 4 represents a partial sectional view of the barrel illustrated in detail in Figure 3 equipped with the firing pin.
[0036] [Fig. 5] Figure 5 shows a perspective view from above of the gun.
[0037] [Fig. 6] Figure 6 shows a cross-sectional view of the two-stage percussion pyrotechnic shock generation system illustrated in Figure 1.
[0038] In Figure 1, a two-stage pyrotechnic shock generation system 1 is shown, namely a first percussion stage 10 and a second percussion stage 20.
[0039] The first percussion stage 10 mainly comprises a firing pin 11, called first firing pin 11, and a barrel 12, called first barrel 12.
[0040] The first percussion stage 10 is configured to be attached to a mounting bracket 13.
[0041] As will be described later, the mounting bracket 13 is intended to be mounted on a surface to be tested. Such a surface may be a surface of equipment or a device intended to undergo pyrotechnic shock tests.
[0042] The second percussion stage 20 is configured to be associated with the first percussion stage 10, such that triggering the second percussion stage 20 causes triggering of the first percussion stage 10.
[0043] The second percussion stage 20 and the first percussion stage 10 are advantageously directly associated with each other.
[0044] The second percussion stage 20 comprises a firing pin 21, called second firing pin 21, and a barrel 22, called second barrel 22.
[0045] The second percussion stage 20 is configured to be associated with an actuator 60 causing the triggering of the second stage 20.
[0046] The actuator 60 is advantageously an electromechanical actuator 60.
[0047] It will be understood that the first percussion stage 10 is intended to be provided independently of the second percussion stage 20.
[0048] For example, the first percussion stage 10 may be configured to be associated with the actuator 60.
[0049] Referring to Figures 2 and 3, the first percussion stage 10 will now be described in more detail.
[0050] The first percussion stage 10 is shown fixed to the fixing support 13. More particularly, the barrel 12 of the first stage 10, or first barrel 12, is configured to be fixed to the fixing support 13. The fixing of the barrel 12 of the first percussion stage 10 to the fixing support 13 can be done by any suitable fixing means.
[0051] The first barrel 12 extends along a main axis A. The first barrel 12 comprises a barrel head 120, a barrel body 121.
[0052] In an exemplary embodiment, the body 121 of the first barrel 12 comprises an external thread 12T intended to cooperate with an internal bore 13' of the fixing support 13, so that the first barrel 12 can be mounted by screwing into the fixing support 13.
[0053] The barrel head 120 also includes an external thread 120' intended to cooperate with an internal bore 200' of an associating device such as, for example, the second percussion stage 20.
[0054] The gun head 120 comprises a plurality of housings 120a distributed around the main axis A and each housing is configured to receive a pyrotechnic cartridge 30.
[0055] The housings may be distributed along one or more rings, the ring(s) being for example centered around the main axis A. The ring(s) is or are for example circular. For example, the housings are distributed along several rings, centered around the main axis A, the rings having different radii.
[0056] The housings 120a of the plurality may be distributed symmetrically around the main axis A, for example according to rotational symmetry, for example according to central symmetry.
[0057] Alternatively, the housings 120a of the plurality may be distributed non-symmetrically around the main axis A, for example without central symmetry. For example, the housings may be distributed along the several rings, for example centered around the main axis A, the housings 120a of one of the rings being offset relative to those of another of the rings and / or being spaced relative to each other within each of the rings so as not to correspond to a central symmetry, for example so as not to correspond to a rotational symmetry, for example in a non-symmetrical manner.
[0058] Without being limited thereto, in the example illustrated, the gun head 120 comprises eight housings 120a. An odd or even number may be provided, for example 3, 6, 10, 12.
[0059] The barrel head 120 comprises a cylindrical central portion 120c intended to cooperate with a cavity 11a of the first firing pin 11 for allow a translational movement without play of the first firing pin 11 relative to the first barrel 12 along the main axis A.
[0060] More particularly, the central portion 120c of the barrel head 120 of the first barrel 12 comprises a housing 120c1 intended to receive a compression means 122, here a compression spring 122, configured to oppose the contact of an edge 110 of the first firing pin 11 with the barrel head 120 when the firing pin 11 is in the rest position.
[0061] According to the invention, the firing pin 11 comprises percussion means 110a configured to simultaneously strike the plurality of pyrotechnic cartridges 30, for example before the firing pin 11 strikes the barrel head 120, for example so that the firing pin 11 strikes the plurality of pyrotechnic cartridges 30 without striking the barrel head 120.
[0062] The firing pin 11 comprises the percussion edge 110. The percussion edge 110 is for example provided to strike the barrel head 120 of the first barrel 12 when none of the housings 120a as described below receives pyrotechnic cartridge(s) 30 as described below. As shown, the percussion edge 110 delimits the cavity 11a of the firing pin 11. The edge 110 forms for example a surface, for example an annular surface, facing housings as described below.
[0063] According to a non-limiting exemplary embodiment of the invention, the percussion means 110a of the striker 11 comprise an annular lip 110a extending from the percussion edge 110, for example along the percussion edge 110.
[0064] According to an alternative embodiment, the annular lip 110 is continuous, that is to say it is without interruption of material. Alternatively, the annular lip 110 is discontinuous, that is to say with interruption of material, without departing from the scope of the invention. In all cases, the annular lip 110 is configured to allow the simultaneous percussion of the pyrotechnic cartridges 30.
[0065] Advantageously, the barrel head 120 of the first barrel 12 comprises an annular groove 120b of a shape corresponding to that of the annular lip 110.
[0066] The correspondence between the annular lip 110 and the annular groove 120b makes it possible to ensure the percussion of the pyrotechnic cartridges 30 intended to be housed in the plurality of housings 120a of the gun head 120.
[0067] As shown in Figure 4, each housing 120a of the plurality of housings 120a comprises, in order, a first section 120a1, a second section 120a2 and a third section 120a3, consecutive to each other.
[0068] The first section 120a1 has a first diameter 120aT and is designed to receive the bead 30a of the corresponding cartridge 30.
[0069] The second section 120a2 has a second diameter 120a2' and is intended to receive the body 30b of the corresponding cartridge 30.
[0070] The third section 120a3 has a third diameter 120a3' and is intended to form a barrel chamber of the corresponding cartridge 30.
[0071] The first diameter 120aT is larger than the second diameter 120a2'.
[0072] The third diameter 120a3' is greater than the second diameter 120a2'.
[0073] The third section 120a3 of each housing of the plurality of housings 120a opens into a propulsion chamber 121a of the first of the barrel 12.
[0074] The barrel chamber 12 of the third section advantageously allows the corresponding pyrotechnic cartridge 30 to gain speed when struck before allowing the propulsion chamber 121a of the first barrel 12.
[0075] The annular groove 120b intersects the first section 120a1 of each housing 120a of the plurality of housings 120a of the barrel head 120 of the first barrel 12
[0076] As illustrated in FIG. 5, the center O of each housing 120a of the plurality of housings 120a is at a first predetermined distance D1 from the main axis A, and the annular groove 120b extends along a groove line L1 at a second predetermined distance D2 from the main axis, and the second distance D2 is less than the first distance D1.
[0077] Even more particularly, the annular groove 120b is delimited by an inner edge 120b1 and an outer edge 120b2, relative to the main axis A, where only the outer edge 120b2 of the annular groove 120b intersects the first diameter D1 of the first section 120a1 and the second diameter D2 of the first section 120a1 of each housing 120a of the plurality of housings 120a.
[0078] This ensures that the edge of each pyrotechnic cartridge 30 is fully struck by the first striker 11. This is particularly advantageous since the pyrotechnic chemical compound contained in a pyrotechnic cartridge 30 is preferentially located at the edge of the head 30a of the pyrotechnic cartridges 30.
[0079] The barrel head 120 of the first barrel 12 is for example configured to be struck by the first firing pin 11 when none of the housings 120a receives a pyrotechnic cartridge 30. For example, the barrel head 120 of the first barrel 12 is configured to be struck by at least a portion of the percussion edge 110, or the portion of the percussion edge only, when none of the housings 120a receives a pyrotechnic cartridge 30, the portion of the percussion edge extending for example radially inward relative to the lip 110a, i.e. between the lip 110a and the main axis A, the portion of the percussion edge forming for example a surface orthogonal to the main axis A and / or facing the face of the barrel head 120 having the housings 120a.For example, at least a portion of the barrel head, or the portion of the barrel head only, is configured to be struck by at least the portion of the percussion edge 110, or the portion of the percussion edge only, when none of the housings 120a receives a pyrotechnic cartridge 30, the portion of the barrel head extending, for example, radially outwardly relative to the annular groove 120b, and / or to the inner edge 120b1 and / or to the outer edge 120b2, relative to the main axis, i.e. the annular groove 120b extends between the main axis A and the portion of the barrel head. The portion of the barrel head may form a surface orthogonal to the main axis A and / or facing the first firing pin 11, for example to the portion of the percussion edge.
[0080] In the propulsion chamber 121a is housed an impact means 40 intended to be propelled.
[0081] As shown in Figure 3, the impact means 40 to be propelled is attached to the first barrel 12 using a connector 40a configured to retain the impact means 40 in the first barrel 12 in a rest state and to release the impact means 40 when the plurality of pyrotechnic cartridges 30 push the impact means 40, for example when the plurality of pyrotechnic cartridges 30 generate gases pushing the impact means 40.
[0082] More particularly, the connector 40a is formed of a fixing pin 40a1 fixed in a bore of the head 120 of the first barrel 12 from the propulsion chamber 121a.
[0083] The connector 40a further comprises a radial ring 40a2 surrounding an insertion head 40a3 of the fixing pin 40a1. The insertion head 40a3 is advantageously forcefully pressed into an opening 40b formed at one end of the impact means 40, which corresponds to the configuration illustrated in FIG. 3.
[0084] The impact means 40 advantageously comprises a flared shape at its end opposite that by which it is fixed to the first barrel 12.
[0085] The first barrel 12 opens through its propulsion chamber 121a inside the fixing support 13.
[0086] The fixing support 13 comprises a housing 130 closed by a fixing plate 131 thus forming a blind housing.
[0087] This blind housing comprises a shock absorber 50 arranged at the bottom of the blind housing in contact with the fixing plate 131.
[0088] As shown in the figures, the fixing plate 131 comprises on its contour a plurality of through openings 131a intended to allow the fixing support 13 to be fixed on a surface to be tested.
[0089] Figure 6 shows a perspective sectional view of the pyrotechnic shock generation system 1 illustrated in Figure 1.
[0090] We will now describe the second percussion stage 20 in more detail.
[0091] As mentioned, the second percussion stage 20 comprises a firing pin 21, called second firing pin 21, and a barrel 22, called second barrel 22.
[0092] The second barrel 22 comprises a barrel head 220 and a barrel body 221.
[0093] The barrel body 221 of the second barrel 22 is intended to be fixed to the barrel head 120 of the first barrel 12 by cooperation of complementary boring and threading means.
[0094] The barrel head 220 of the second barrel 22 comprises a housing 220a for receiving a pyrotechnic device 70 formed of a pyrotechnic cartridge 30 associated with a projectile 30c.
[0095] The second barrel 22 includes a propulsion chamber 221a allowing the propulsion of the projectile 30c. The propulsion chamber 221a allows the speed of the projectile 30c to be increased.
[0096] The propulsion chamber 221a of the second barrel 22 opens onto the first firing pin 11. Thus, the projection of the projectile 30c by the pyrotechnic cartridge 30 of the second percussion stage 20 is intended to strike the first firing pin 11, then causing the percussion of the first percussion stage 10.
[0097] The second firing pin 21 of the second percussion stage 20 comprises a breech 210 intended to be coupled to the barrel head 220 of the second barrel 22 by cooperation of complementary boring and threading means.
[0098] The second striker 21 further comprises a percussion rod 211 slidably mounted in an opening 210' of the cylinder head 210 to be translated relative to the cylinder head 210.
[0099] The second firing pin 21 also includes an interface plate 212 arranged between the second firing pin 11 and the barrel head 220 of the second barrel 22.
[0100] A compression spring 213 is mounted to extend between an opening 12T of the interface plate 212 and the opening 210' of the yoke 210.
[0101] The compression spring 213 makes it possible to keep the percussion rod 211 disengaged from the pyrotechnic cartridge 30 or, failing that, pressing against it without the pressing force being sufficient to trigger the pyrotechnic cartridge 30.
[0102] The percussion rod 211 is further associated with a cylinder 61 of the actuator 60 so that the actuation of the cylinder 61 causes the translation of the percussion rod 211 relative to the cylinder head 210.
[0103] The actuator 60 further comprises an actuating block 63 secured to the percussion rod 211 and actuating pins 62 connected to the actuating block 63 to enable the actuator 60 to be triggered.
[0104] We will now describe the operating principle of the pyrotechnic shock generation system 1 in the two-stage configuration illustrated in Figures 1 and 6.
[0105] Triggering of the actuator 60 by its actuating pins 62 causes the actuating block 63 to slide relative to the breech 210 of the second firing pin 11. The cylinder 61 of the actuator 60 then presses on the percussion rod 211 of the second firing pin 11 according to a percussion force generated by the sliding of the cylinder 61 of the actuator 60. The percussion force is of course sufficient to cause the detonation of the pyrotechnic cartridge 30 of the second percussion stage 20 and overcome the resistance of the compression spring 213 arranged between the interface plate 212 and the breech 210.
[0106] The percussion rod 211 then presses an edge of the pyrotechnic cartridge 30 of the second percussion stage 20 causing the explosion of the pyrotechnic charge contained in the pyrotechnic cartridge 30, so that the cartridge 30 propels the projectile 30c associated with it.
[0107] The 30c projectile is then propelled into the propulsion chamber 221a of the second barrel 22 until it strikes the first firing pin 11.
[0108] The impact by the 30c projectile of the first firing pin 11 causes the first firing pin 11 to slide, causing it to translate relative to the barrel head 120 of the first barrel 12 along the main axis A.
[0109] The annular lip 110 of the first firing pin 11 then engages in the annular groove 120b of the head of the first barrel 12.
[0110] Since the annular groove 120b intersects the first section 120a1 of each housing 120a of the plurality of housings 120a of the barrel head 120 of the first barrel 12. The support of the annular lip 110 of the first firing pin 11 causes the simultaneous support on the edge of each pyrotechnic cartridge 30 disposed in said housings 120a.
[0111] Thus, it is possible to cause the priming of a plurality of pyrotechnic cartridges 30, for example of the plurality of pyrotechnic cartridges 30, and advantageously, from a single pyrotechnic cartridge 30 of the second percussion stage 20.
[0112] Priming the plurality of cartridges 30 causes combustion generating gases in their respective barrel chamber, the gases then enter the propulsion chamber 121a of the first barrel 12.
[0113] The penetration of gases from the pyrotechnic cartridges 30 into the propulsion chamber 121a of the first gun 12 aims to push the impact means 40 housed in the propulsion chamber 121a.
[0114] The thrust force generated by the gases of the pyrotechnic cartridges 30 makes it possible to disengage the impact means 40 from the connector 40a which retains it and allows it to be projected into the propulsion chamber 121a.
[0115] Once disengaged from the connector 40a, the impact means 40 is then propelled into the propulsion chamber 121a at a predetermined speed sufficient to generate a desired impact force for the impact test to be carried out.
[0116] The shock absorber 50 in the mounting bracket 13 is provided to prevent damage to the mounting bracket 13 while transmitting the desired impact force.
[0117] Preferably, the desired impact force is provided to compensate for the force that the shock absorber 50 can absorb.
[0118] It will of course be understood that the desired impact force is intended to be transmitted to the surface to be tested.
[0119] Obviously, the invention is not limited to the examples which have just been described and numerous adjustments can be made to these examples without departing from the scope of the invention. In particular, the different characteristics, forms, variants and embodiments of the invention can be associated with each other in various combinations to the extent that they are not incompatible or mutually exclusive. In particular, all the variants and embodiments described above can be combined with each other.
Claims
Claims
1. System (1) for generating pyrotechnic shocks, the system (1) comprising a percussion stage (10) comprising: a barrel (12) extending along a main axis (A), a firing pin (11) configured to be moved in translation relative to the barrel (12) along the main axis (A), the barrel (12) comprising a barrel head (120), characterized in that the barrel head (120) comprises a plurality of housings (120a) distributed around the main axis (A), each housing (120a) being configured to receive a pyrotechnic cartridge (30), and in that the firing pin (11) comprises percussion means (110a) configured to simultaneously strike the plurality of pyrotechnic cartridges.
2. System (1) for generating pyrotechnic shocks according to the preceding claim, characterized in that the percussion means (110a) of the striker (11) comprise a lip (110a) formed on an edge (110) of the striker (11) intended to simultaneously strike the plurality of pyrotechnic cartridges, and for example in that the barrel head (120) of the barrel (12) comprises a groove (120b) of a shape corresponding to that of said lip.
3. System (1) for generating pyrotechnic shocks according to the preceding claim, characterized in that the lip (110a) and the groove (120b) are annular.
4. System (1) for generating pyrotechnic shocks according to any one of claims 2 or 3, characterized in that the center (O) of each housing (120a) of the plurality of housings (120a) is at a first predetermined distance (D1) from the main axis (A), and in that the groove extends along a groove line (L1) around the main axis (A), the groove line (L1) being at a second predetermined distance (D2), the second distance (D2) being less than the first distance (D1).
5. System (1) for generating pyrotechnic shocks according to any one of the preceding claims, characterized in that at least one housing (120a) of the plurality of housings (120a) comprises a first section (120a1) and a second section (120a2) consecutive to the first section (120a1), the first section (120a1) having a first diameter (120a1'), and the second section (120a2) having a second diameter (120a2') smaller than the first diameter (120a1'), the first section (120a1) being provided to receive a bead (30a) of the corresponding cartridge (30) and the second section (120a2) being provided to receive the body (30b) of the corresponding cartridge (30).
6. System (1) for generating pyrotechnic shocks according to claim 4, characterized in that the groove line (L1) passes between the first diameter (D1) and the second diameter (D2).
7. System (1) for generating pyrotechnic shocks according to any one of the preceding claims, characterized in that the barrel (12) comprises a central portion (120c) extending around the main axis (A) from the barrel head (120), the central portion (120c) being provided to receive the firing pin (11) and allow its translational movement along the main axis (A), and in that the central portion (120c) comprises a housing (120c1) provided to at least partially receive a compression means (122), the compression means (122) being provided to disengage the firing pin (11) from the barrel head (120).
8. System (1) for generating pyrotechnic shocks according to any one of the preceding claims, characterized in that the barrel (12) comprises a propulsion chamber (121a) of an impact means (40), the plurality of housings (120a) opening into the propulsion chamber (121a), in that the system (1) comprises a fixing support (13) configured to be fixed to a surface to be tested, the fixing support (13) being fixed to the barrel (12), and in that the propulsion chamber (121a) opens into the fixing support (13).
9. System (1) for generating pyrotechnic shocks according to any one of the preceding claims, characterized in that the system (1) comprises, in addition to the percussion stage (10), called the first percussion stage (10), a second percussion stage (20) superimposed on the first percussion stage (20), the second percussion stage (20) comprising a pyrotechnic device (70) configured to strike the striker (11) of the first percussion stage (10).
10. Method for generating pyrotechnic shocks implementing the system (1) for generating pyrotechnic shocks according to any one of the preceding claims.