EP0454539A1 - Steuerungsverfahren zur programmierten Zündungsverzögerung eines Geschosses mit wenigstens einer militärischen Ladung - Google Patents

Steuerungsverfahren zur programmierten Zündungsverzögerung eines Geschosses mit wenigstens einer militärischen Ladung Download PDF

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Publication number
EP0454539A1
EP0454539A1 EP91401001A EP91401001A EP0454539A1 EP 0454539 A1 EP0454539 A1 EP 0454539A1 EP 91401001 A EP91401001 A EP 91401001A EP 91401001 A EP91401001 A EP 91401001A EP 0454539 A1 EP0454539 A1 EP 0454539A1
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EP
European Patent Office
Prior art keywords
projectile
impact
target
firing
incidence
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
EP91401001A
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English (en)
French (fr)
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EP0454539B1 (de
Inventor
Joel Bansard
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.)
Thomson Brandt Armements SA
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Thomson Brandt Armements SA
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Publication date
Application filed by Thomson Brandt Armements SA filed Critical Thomson Brandt Armements SA
Publication of EP0454539A1 publication Critical patent/EP0454539A1/de
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C11/00—Electric fuzes
    • F42C11/06—Electric fuzes with time delay by electric circuitry
    • F42C11/065—Programmable electronic delay initiators in projectiles

Definitions

  • the present invention relates to a firing control system with programmable projectile delays comprising at least one military charge.
  • any device moving towards a target and carrying at least one military charge intended to damage or destroy the target such as shell, guided shell, missile, munition or submunition, bomb , etc. . . dropped or fired by cannon, mortar or lookout for example.
  • the object of the present invention is to take into account additional information in real time in order to optimally determine the delays in igniting the charges and therefore to program or modify them. Indeed, the Applicant has found that the optimal delay values for obtaining the best effectiveness of a projectile vary depending in particular on the speed of the projectile at the time of impact on the target, on the angle of incidence of the projectile on the target. or the type of target considered according to determinable laws.
  • An object of the invention is therefore an improved firing control system making it possible to program the firing delays of the charge (s).
  • the delay T AV is made up of constant delays such as delay in setting explosive regime, delay in operating the primer, time for electronic processing of the signal from an impact sensor, and a variable delay t AV optimized according to the invention as a function of the speed V of the projectile at the time of impact of the projectile on the target and of the angle of incidence I of the projectile on the target.
  • the function f can for example be determined experimentally so as to obtain a table of values of t AV and therefore of T AV for the various pairs of values V and I.
  • the delay T AR is made up of constant delays similar to those mentioned for T AV and of a variable delay t AR optimized according to the invention as a function of the angle of incidence I of the projectile on the target and of the type of target C.
  • the function f ′ can, like the function f, be determined experimentally.
  • Such a system has multiple advantages. It significantly improves the efficiency of the tandem charges by allowing the charges to be ignited at optimal times in each case. It allows you to adapt to any new target.
  • Figure 1 shows schematically the structure of a tandem charge P projectile incorporating a firing control system according to the invention and Figure 2 is a block diagram of this system.
  • the projectile P carries a preload 2 with its firing device 3 and a main charge 4 with its firing device 5.
  • the preload 2 and the charge 4 are arranged in line and can for example be hollow charges.
  • M the point of impact of the projectile P on the target (not shown)
  • My represents the normal to the surface of the target at point M and the angle that My makes with the X′X axis of the projectile is the angle of incidence I of the projectile on the target.
  • the projectile P also includes an inertial unit 6 which makes it possible to obtain the speed of the projectile at the time of impact.
  • the speed V could also be determined from a decelerometric sensor, by integration of the acceleration information provided, or by any other known means.
  • the processing of the signals from the detectors 1 and from the central unit 6 to obtain the parameters To, V and I is carried out by a computer 7 which, from these parameters, deduces therefrom the optimal delay values T AV and T AR on switching on. of the precharge 2 and the main charge 4 and sends the corresponding control signals to the ignition devices 3 and 5.
  • An energy supply 8 supplies the various elements 1, 3, 5, 6, 7 of the system.
  • FIG. 3 represents a first embodiment of the computer 7 of the system according to the invention.
  • This computer essentially comprises a read only memory 71, for example of the erasable type EEPROM, in which are stored the tables of optimal delay values for the different values of the parameters V, I and C.
  • a processor 70 receiving the signals from the impact detectors 1 and the inertial unit 6 calculates the impact speed V and the angle of incidence I and deduces therefrom an address for the memory 71 which then provides the optimal delay T AV .
  • This delay in digital form is loaded into a downcounter circuit 72.
  • the downcounter circuit 72 will start to count down at the rate of a clock 75 as soon as the firing order signal MAF received from the processor 70 and emitted as soon as the impact time To has been detected.
  • the clock pulses to be counted are supplied by an AND gate 73, one input of which is connected to the clock 75 and the other input of which is connected to the output Q of a flip-flop 74 of type D.
  • This flip-flop has an input D at the high level and a clock input receiving the MAF command. Upon receipt of this order, the Q output starts the high state and remains there, authorizing the transfer of the clock pulses by the gate 73 towards the down-counter.
  • This one initially loaded as we have seen at a digital value corresponding to the delay T AV , taking into account the frequency of the clock, will therefore count down a number of pulses corresponding to the optimal delay until it passes through zero where a signal appears on its end-of-countdown output ("ripple output" in Anglo-Saxon literature).
  • This signal amplified by the amplifier 76 constitutes the signal for controlling the firing of the preload 2.
  • a sequencer 77 provides the command to read from memory 71 and the command to load the down-counter 72.
  • the memory 71 can also contain the table of values T AR .
  • the processor 70 is designed to receive on an input 701 the target type parameter C which can be introduced manually before the mission or which can be provided by an image analysis processor located on board or preferably on the ground (in the case of a wire-guided projectile, for example).
  • the down-counter 72 is then loaded at the new delay value T AR , the same circuits being used and the firing control signal then being routed to the firing circuit 5. It is also possible to provide any other equivalent architecture, reusing for example only the processor 70 and the memory 71, the control means (down-counter, flip-flop, etc.) being specific to the main load.
  • FIG. 4 represents another embodiment of the computer 7, fairly close to the previous one.
  • the same reference numbers refer to the same elements as in FIG. 3. We find the same control means 72 to 76.
  • the optimal delay is calculated by the processor 70 ′, from signals coming from the impact detectors 1 and from the inertial unit 6. This delay is transmitted to a random access memory (RAM) 71 ′ via a bidirectional serial link 700 with its transceivers 79 and a universal asynchronous serial circuit (UART) 78 which performs in particular the series-parallel conversion of the data.
  • the optimal delay is loaded into the memory 71 ′ then into the down-counter 72 under the control of the sequencer 77 ′.
  • the determination of the optimal delays could also depend on additional parameters compared to those indicated. It is clear in particular that the optimal delay in the operation of the preload may also depend on the type of the target C.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Radar Systems Or Details Thereof (AREA)
EP91401001A 1990-04-27 1991-04-16 Steuerungsverfahren zur programmierten Zündungsverzögerung eines Geschosses mit wenigstens einer militärischen Ladung Expired - Lifetime EP0454539B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9005399A FR2661493B1 (fr) 1990-04-27 1990-04-27 Systeme de commande de mise a feu avec retards programmables pour projectile comportant au moins une charge militaire.
FR9005399 1990-04-27

Publications (2)

Publication Number Publication Date
EP0454539A1 true EP0454539A1 (de) 1991-10-30
EP0454539B1 EP0454539B1 (de) 1994-03-09

Family

ID=9396168

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91401001A Expired - Lifetime EP0454539B1 (de) 1990-04-27 1991-04-16 Steuerungsverfahren zur programmierten Zündungsverzögerung eines Geschosses mit wenigstens einer militärischen Ladung

Country Status (4)

Country Link
US (1) US5180882A (de)
EP (1) EP0454539B1 (de)
DE (1) DE69101332T2 (de)
FR (1) FR2661493B1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2662557B1 (fr) * 1990-05-22 1997-07-25 Thomson Brandt Armements Convertisseur basse tension-haute tension.
SE505199C2 (sv) * 1995-05-02 1997-07-14 Bofors Ab Anordning vid tändsystem
US20030140811A1 (en) * 2001-12-14 2003-07-31 General Dynamics Ordnance & Tactical Systems, Inc. Medium caliber high explosive dual-purpose projectile with dual function fuze
US6959893B1 (en) * 2003-04-01 2005-11-01 The United States Of America As Represented By The Secretary Of The Army Light fighter lethality seeker projectile
US7314004B2 (en) * 2004-06-09 2008-01-01 Alliant Techsystems Inc. Method for delayed detonation of a penetrating weapon and related apparatus and systems
ES2549264T3 (es) * 2006-03-09 2015-10-26 Saab Ab Procedimiento para la reducción de la cantidad de tipos de munición a utilizar y dispositivo de munición
US7720608B2 (en) * 2007-12-10 2010-05-18 Applied Research Associates, Inc. Method and signal processing means for detecting and discriminating between structural configurations and geological gradients encountered by kinetic energy subterranean terra-dynamic crafts
WO2010053407A1 (en) * 2008-11-05 2010-05-14 Saab Ab An ignition and delay circuit
US7813223B1 (en) 2009-09-28 2010-10-12 The United States Of America As Represented By The Secretary Of The Navy System and method for focusing a kinetic pulse array

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4375192A (en) * 1981-04-03 1983-03-01 The United States Of America As Represented By The Secretary Of The Navy Programmable fuze
DE3141333A1 (de) * 1981-10-17 1983-05-05 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Aufschlagzuender

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3589295A (en) * 1968-05-24 1971-06-29 Simmonds Precision Products Delay fuse mechanism
DE3117675C2 (de) * 1981-05-05 1983-12-22 Messerschmitt-Bölkow-Blohm GmbH, 8012 Ottobrunn Schaltungsanordnung zur Aktivierung eines Geschoßzünders
US4580498A (en) * 1982-07-27 1986-04-08 Motorola, Inc. Fuze actuating system having a variable impact delay
US4714022A (en) * 1984-09-05 1987-12-22 Etat Francais Warhead with tandem shaped charges
DE3503919C1 (de) * 1985-02-06 1986-07-03 Messerschmitt-Bölkow-Blohm GmbH, 8012 Ottobrunn Einrichtung zur Ausloesung einer Mine mit einem als Kugel oder Rotationskoerper ausgebildeten Gehaeuse
DE3526474C1 (de) * 1985-07-24 1986-12-18 Messerschmitt-Bölkow-Blohm GmbH, 8012 Ottobrunn Einrichtung zur Ausloesung eines absetzbaren Wirkkoerpers
DE3711698C1 (de) * 1987-04-07 1988-03-31 Messerschmitt Boelkow Blohm Zuendeinrichtung
GB8813374D0 (en) * 1988-06-07 1988-11-16 Hunting Eng Ltd Initiation methods

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4375192A (en) * 1981-04-03 1983-03-01 The United States Of America As Represented By The Secretary Of The Navy Programmable fuze
DE3141333A1 (de) * 1981-10-17 1983-05-05 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Aufschlagzuender

Also Published As

Publication number Publication date
EP0454539B1 (de) 1994-03-09
DE69101332D1 (de) 1994-04-14
FR2661493A1 (fr) 1991-10-31
DE69101332T2 (de) 1994-06-16
FR2661493B1 (fr) 1992-06-19
US5180882A (en) 1993-01-19

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