SE2200100A1 - Fragmentation analysis method - Google Patents
Fragmentation analysis methodInfo
- Publication number
- SE2200100A1 SE2200100A1 SE2200100A SE2200100A SE2200100A1 SE 2200100 A1 SE2200100 A1 SE 2200100A1 SE 2200100 A SE2200100 A SE 2200100A SE 2200100 A SE2200100 A SE 2200100A SE 2200100 A1 SE2200100 A1 SE 2200100A1
- Authority
- SE
- Sweden
- Prior art keywords
- target
- warhead
- fragment
- specific
- probability
- Prior art date
Links
- 238000013467 fragmentation Methods 0.000 title description 8
- 238000006062 fragmentation reaction Methods 0.000 title description 8
- 238000004458 analytical method Methods 0.000 title description 2
- 239000012634 fragment Substances 0.000 claims abstract description 63
- 230000000694 effects Effects 0.000 claims abstract description 43
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000004590 computer program Methods 0.000 claims description 2
- 238000011156 evaluation Methods 0.000 description 8
- 238000004088 simulation Methods 0.000 description 8
- 230000015654 memory Effects 0.000 description 7
- 238000005474 detonation Methods 0.000 description 6
- 238000013459 approach Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000003380 propellant Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000036314 physical performance Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000006399 behavior Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
- F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
- F41A31/00—Testing arrangements
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
- G06F30/23—Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
- G06T17/20—Finite element generation, e.g. wire-frame surface description, tesselation
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B9/00—Simulators for teaching or training purposes
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B9/00—Simulators for teaching or training purposes
- G09B9/003—Simulators for teaching or training purposes for military purposes and tactics
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
- F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
- F42B12/20—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of high-explosive type
- F42B12/22—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of high-explosive type with fragmentation-hull construction
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Software Systems (AREA)
- Geometry (AREA)
- Computer Hardware Design (AREA)
- Evolutionary Computation (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Business, Economics & Management (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- Computer Graphics (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
The invention related to a method for simulating weapon effect against a specific target comprising at least one three dimensional model of a warhead and a three dimensional model of a target where the model of the warhead is adapted so that the weapon effect against the target for each fragment of the warhead is simulated.
Description
INTRODUCTION The present invention relates to a method for simulating weapon effect against a specific target comprising at least one three dimensional model of a warhead and a three dimensional model of a target where the model of the warhead is adapted so that the weapon effect against the target for each fragment of the warhead is simulated.
BACKGROUND OF THE INVENTION, ART PROBLEM DEFINITION AND PRIOR Modelling of performance of a weapon system is of great importance for a wide variety of tasks such as to develop doctrines such as tactical doctrines, to learn more about a system. for further research and development efforts, to evaluate a systems performance for a specific target or in a specific situation, system. and to train users of the specific According to one traditional method, the effectiveness of a weapon system in a combat engagement is performed using a two-step approach. The first step is to create an error budget for the system being analyzed, the task of evaluating and the second step is to use that error budget to evaluate' the probability of defeating a target.
An error budget is a collection of forces and effects that contribute to a fired round missing its intended aim point. These forces and effects are described through equations that calculate their downrange miss distances. The values of the results then into three categories based on how the errors manifest themselves in a scenario. These categories burst, and engagement-to-engagement. are root-sum-squared are round-to-round, burst-to- These values are then used in further analysis.
Once an error budget has been created, it is used with one of two methodologies to calculate the probability of defeating a target. The method used to analyze the weapon depends on the complexity of the firing situation. One Inkom till Patent- oc registreringsverkei 2 zuzz -nse ns method is a statistical approach that is used in direct fire situations with simple targets. The other method is an iterative solution that is used in more complex scenario or with air burst munitions.
An example of a system and method for evaluating the performance of a weapon platform is described in patent application US 9,830,408 Bl. A drawback with currently existing solutions according to 9,830,408 Bl is that the described system. and method does no discloses that the weapon effect is simulated for each individual fragment generated by the warhead. The patent application neither discloses a closed-loop system.
When a new warhead is design it is conventional to simulate the fragmentation performance of the warhead with specific finite element simulation software such as LS-DYNA or other software used to simulate complex real world, highly nonlinear, transient dynamic physical behaviour. Drawback with these kind of simulations are, as an example, that the target position relative the warhead, the Velocity of the target and the warhead and that the physical characteristics of the warhead. are not included in the simulation.
Further problems which the present invention aims to solve will be elucidated below in the detailed description of the various embodiments.
OBJECT OF THE INVENTION AND ITS DISTINCTIVE FEATURES The invention relates to a næthod for simulating weapon effect against a specific target comprising at least one three dimensional model of the warhead and a three dimensional model of the target where the model of the warhead is adapted so that the weapon effect against the target for each fragment of the warhead is simulated.
According to further aspects of the improved næthod for simulating weapon effect against a specific target; the weapon effect of each fragment is simulated in relation to the position of the target. inkom tiil Patent- och registreringsverket 3 2022 -ns- 09 an estimate of the probability that a specific fragment of the warhead effects the target is calculated. an estimate of the probability that a specific fragment of the warhead hits the target is calculated. the probability for that a specific fragment of the warhead hits the target is visualized as a heat map of the warhead where each specific fragment is illustrated with a colour relating to the probability.
According to further embodiments of the invention the invention also comprises a computer program product wherein the method for simulating weapon effect against a specific target comprises at least one model of a warhead implemented in program code.
ADVANTAGES AND EFFECTS OF THE INVENTION Advantages of the present invention includes that the simulation is performed in three dimensions compared to the conventional two dimensions. The actual performance of a warhead is dependent upon when the warhead is initiated. Depending the situation the could approach the target perpendicular to the target or parallel to the target and all the alternatives between a full perpendicular approach and a fully parallel approach. With upon actual warhead a simulation. of the weapon effect in a complete system chain it is possible to optimize the position of the fragments, the pre-fragment, size of the fragments and number of fragments of the warhead for a specific situation or type of engagement.
DRAWING FIGURES The invention. will be described in greater detail below with reference to the attached figures, in which: Fig. evaluation l shows a block diagram of a closed loop weapon system method according to one embodiment of the invention. mkom till Patent- och regßtreringsverket 4 zozz -ne- ns Fig. 2 shows a heat map of the weapon effect towards a target of individual fragments of a warhead for a first position relative to the target according to one embodiment of the invention.
Fig. 3 shows a heat map of the weapon effect towards a target of individual fragments of a warhead for a second position relative to the target according to one embodiment of the invention.
DETAILED DESCRIPTION OF EMBODIMENTS Fig. l shows a block diagram of a closed loop weapon system evaluation næthod 10 according to one embodiment of the invention. The closed loop weapon system evaluation method 10 comprises a number of modules describing the weapon system. The modules of the closed loop weapon system evaluation method 10 could include, but is not limited to, the following modules; a sight unit 20, 30, a launch unit 40, a projectile trajectory unit 50, a warhead unit 50 of said projectile unit, a target unit 60. The closed loop weapon system. evaluation method 10 is collectively arranged in a data processing system such as a computer or other calculating unit arranged to carry out sequences of arithmetic or logical operations automatically via computer programming. a fire control unit The sight unit 20 represent a model of a sight of weapon system such as a gun. The sight unit 20 comprises models of radar sensors, models of electro optical sensor/sight, and/or a model of a laser rangefinder. The fire control unit 30 represent a model of a fire control system of a weapon system comprising at least one of a model of a ballistic calculator, of prediction filters, weather models, model models of ship gyro for specific modelling for ship mount systems.
The sight unit 20 and the fire control unit 30 could also be modelled as a combined entity.
The launch unit 40 represent a model of a launch unit, as a gun. The launch used for such unit is launching a Inkom till Patent- och regßtreringsverket 2022 -us- 09 In the case the launch of the gun could include projectile from the launch unit. unit is a gun the components models for an initiator, a propellant, a projectile and a barrel. At ignition the propellant is ignited and burned to generate gas and a gas pressure acting upon the projectile arranged in the When the achieves a certain threshold the projectile to move barrel. pressure starts in the barrel. The propellant continuous to generate gas acting upon the projectile until the projectile leaves the gun barrel. The launch unit 40 could also comprise models of speed and elevation speed and limitations, rate of fire, dispersion etc. traverse limitations, The projectile trajectory unit 50 comprises a model of a projectile trajectory comprising ballistic models adapted for different projectile characteristics.
The warhead unit 60 comprises a model of the warhead of the projectile. properties of a warhead could be calculated in a finite element program such as LS-Dyna. The results transit dynamic calculation, or from other simulation, are represented in the warhead unit 60 by a Inodel comprising at least one model representing at least one of fragmentation Velocity, The dynamic, or transit dynamic, from a fragmentation size, fragmentation shape, fragmentation trajectory, and fragmentation ballistics and/or other additional models/representation regarding the fragments physical performance. Further the projectile could be modelled with regards to muzzle Velocity, rotational Velocity, Cd coefficient (drag coefficient) and/or other additional models regarding the projectiles physical performance.
Further the fuze of the ammunition could be modelled with parameters for a time fuze such as time dispersion, auto destruct functionality and function probability of time and/or other additional models regarding the performance of the time fuze. Further the fuze could be modelled with parameters for a point detonation fuze such fuze, as point detonation delay, point detonation target hardness requirement, point detonation function probability for a point detonation fuze, and/or other additional models regarding the performance of the point detonation fuze.
Further the fuze could be modelled with parameters for a Inkom till Patent- och reglstreringsverket 6 2022 -ns- us proximity fuze such as detection area radius and shape for a proximity fuze, probability of trigg within detection area for a proximity fuze, dispersion of burstpoints within detection area for a proximity fuze and overall probability of fuze function for a proximity fuze, and/or other additional models regarding the performance of the proximity fuze. fuze The target unit 70 could comprise models for path, speed, geometry, materials and vital components/Sensitive section of the target and/or other additional models regarding the performance and/or construction of the target.
Fig. 2 shows a heat map of the probability of a specific fragment hitting the target 100, the weapon effect towards a target of individual fragments of a warhead for a first position relative to the target. A heat map shows the magnitude of a phenomenon, in this case the probability, as colour, or other visual indication, in two dimensions. For this specific figure the magnitude is illustrated as a varying density of lines. Each individual fragment is shown with the probability that the fragment effects and/or hits the target wherein the fragment visualized with a higher density of lines, such as fragment 102, have a very high probability to effect and/or hit the target. Fragments visualized with a slightly less density on the lines, such as fragment 104, have a high probability to effect and/or hit the target. Fragments visualized with a low density of lines, such as fragment 106, have a low probability to effect and/or hit the target. Fragments visualized with no lines at all, such as fragment 108, have more or less no probability to effect and/or hit the target. i.e.
Fig. 3 shows the probability of a specific effecting and/or hitting the target l00', the weapon effect towards a target of individual fragments of a warhead, for a second position relative to the target. Each individual fragment is shown with the probability that the fragment effects and/or hits the target wherein the fragment visualized with a higher density of lines, such as fragment i.e.
Inkom till Patent- och reglstrerlngsverket 2022 -09- 09 fragment 102, have a very high probability to effect and/or hit the target. density on the lines, Fragments visualized with a slightly less such as fragment 104, have a high probability to effect and/or hit the target. Fragments visualized with a low density of lines, such as fragment 106, have a low probability to effect and/or hit the target. In the specific shown figure there is not fragments with. more or less no probability' of effecting and/or hitting the target, the described scenario thus show a scenario where more or less every fragment have the probability to effect and/or hit the target. such as shown in figure 2, i.e.
When weapon effect it is identify which specific fragments or pre-fragments of the warhead that the effect to the simulating the possible to contributes to weapon target. Fragments that does not contribute to the weapon effects, such as fragment 108, could be removed from the warhead with limited or no negative effect of the performance of the warhead. By simulating the complete system chain including at least a model of the target, the position of the projectile relative the position of the target, the speed of the projectile, the speed of the target, the arrangement of the fragments of warhead of the projectile and the distribution of the fragments of the warhead when the warhead is initiated a complete simulation model of a specific weapon engagement is possible and the warhead could be optimized. Optimization of the warhead could include selection of the size of the fragments of the warhead and for pre fragmented warhead the size of the specific the number of fragments, the distribution of fragments etc. Specifically it is possible to remove fragments that is not contributing to the weapon effect of the warhead and thus reduce the cost to produce the warhead, the weight of the warhead etc. fragments, Traditionally a warhead is simulated in a dynamic simulation environment to optimize the distribution of the fragments from the warhead and/or the fragmentation of the warhead when the warhead is in a static stationary Inkom till _Patent- ocl' reglstrenngsverkej zozz -os- 09 position. The optimization is thus performed to improve the distribution of fragments or pre-fragments to achieve a preferable distribution pattern for a general utilization of the warhead. With a simulation of the weapon effect in a complete system. chain it is possible to the position of the fragments, size of the fragments and number of fragments of the warhead for a specific situation or type of engagement. optimize In a simulation it is possible to set the speed of the projectile and/or the target and in an example the speed of the projectile could be in the range of 550 m/s to 650 m/s and the rotation of the projectile could be in the range 3800 rad/s to 4600 rad/s and the speed of the target could be in the range 10 m/s to 30 m/s.
ALTERNATIVE EMBODIMENTS The invention is not limited to the embodiments specifically shown, but can be varied in different ways within the scope of the patent claims.
It will be appreciated, for example, that the modules of the closed loop weapon system evaluation method could be varied and how the modules are arranged, as well as the integral modules and implementation, is adapted to the needs of the user and/or customer of a closed loop weapon system. evaluation. method. The closed loop weapon system evaluation method could also be changed depending upon other current design characteristics.
Embodiments of the present invention can take the form of an entirely hardware embodiment or an embodiment containing both hardware and software elements. For the purposes of this description, a computer usable or computer readable medium can be that can contain, store, communicate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. magnetic, optical, semiconductor any apparatus propagate, The medium. can be an electronic, infrared, or device) or a electromagnetic, system (or apparatus or Examples of a computer-readable medium solid state memory, magnetic propagation medium. include a semiconductor or tape, a removable computer diskette, a random access memory (RAM), a read-only memory (ROM), a rigid magnetic disk and an optical disk. Current examples of optical disks include compact disk-read only memory (CD-ROM), compact disk- read/write (CD-R/W) and DVD. The medium could also be a service arranged to an electronic communication means such as Internet or a cloud service.
A data processing system suitable for storing and/or executing program code will include at least one processor coupled directly or indirectly to memory elements through a system bus. The memory elements can include local memory employed during actual execution of the program code, bulk storage, and cache memories which provide temporary storage of at least some program code in order to reduce the number of times code must be retrieved from bulk storage during Input/output or I/O devices (including but not limited to keyboards, displays, pointing devices, etc.) can be coupled to the system either directly or through intervening I/O controllers. Network adapters may also be coupled to the system to enable the data processing system to become coupled to data systems or remote printers or storage devices intervening private or public networks.
Claims (1)
1.Method for simulating weapon effect against a specific target comprising at least one three dimensional model of the warhead and a three dimensional model of the target wherein the model of the warhead is adapted so that the weapon effect against the target for each fragment of the warhead is simulated and that an estimate of the probability that a specific fragment of the warhead effects the target is calculated. .Method for simulating weapon effect against a specific target according to claim l wherein the weapon effect of each fragment is simulated in relation to the position of the target. .Method for simulating weapon effect against a specific target according to any of the preceding claims wherein an estimate of the probability that a specific fragment of the warhead hits the target is calculated. .Method for simulating weapon effect against a specific target according to any of the preceding claims wherein the probability for that a specific fragment of the warhead effects and/or hits the target is visualized as a heat map of the warhead where each specific pre-fragment is illustrated with a colour relating to the probability. .Computer program product wherein the method according to any of claims l - 4 are implemented in program code.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE2200100A SE2200100A1 (en) | 2022-09-09 | 2022-09-09 | Fragmentation analysis method |
PCT/SE2023/050800 WO2024054142A1 (en) | 2022-09-09 | 2023-08-09 | Fragmentation analysis method. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE2200100A SE2200100A1 (en) | 2022-09-09 | 2022-09-09 | Fragmentation analysis method |
Publications (1)
Publication Number | Publication Date |
---|---|
SE2200100A1 true SE2200100A1 (en) | 2024-03-10 |
Family
ID=90191659
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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SE2200100A SE2200100A1 (en) | 2022-09-09 | 2022-09-09 | Fragmentation analysis method |
Country Status (2)
Country | Link |
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SE (1) | SE2200100A1 (en) |
WO (1) | WO2024054142A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0313536A1 (en) * | 1987-10-22 | 1989-04-26 | Aktiebolaget Bofors | A method for improving hit probability of automatic antiaircraft weapons |
US20050126380A1 (en) * | 2003-02-26 | 2005-06-16 | Oerlikon Contraves Pyrotec Ag | Method for programming the shattering or projectiles and tube weapon with programming system |
US20080206718A1 (en) * | 2006-12-01 | 2008-08-28 | Aai Corporation | Apparatus, method and computer program product for weapon flyout modeling and target damage assessment |
US20150243182A1 (en) * | 2011-11-29 | 2015-08-27 | L-3 Communications Corporation | Physics-based simulation of warhead and directed energy weapons |
-
2022
- 2022-09-09 SE SE2200100A patent/SE2200100A1/en unknown
-
2023
- 2023-08-09 WO PCT/SE2023/050800 patent/WO2024054142A1/en unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0313536A1 (en) * | 1987-10-22 | 1989-04-26 | Aktiebolaget Bofors | A method for improving hit probability of automatic antiaircraft weapons |
US20050126380A1 (en) * | 2003-02-26 | 2005-06-16 | Oerlikon Contraves Pyrotec Ag | Method for programming the shattering or projectiles and tube weapon with programming system |
US20080206718A1 (en) * | 2006-12-01 | 2008-08-28 | Aai Corporation | Apparatus, method and computer program product for weapon flyout modeling and target damage assessment |
US20150243182A1 (en) * | 2011-11-29 | 2015-08-27 | L-3 Communications Corporation | Physics-based simulation of warhead and directed energy weapons |
Also Published As
Publication number | Publication date |
---|---|
WO2024054142A1 (en) | 2024-03-14 |
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