EP0802392B1 - Procédé et dispositif de détermination d'un temps de désintégration corrigé d'un projectile programmable et frangible - Google Patents

Procédé et dispositif de détermination d'un temps de désintégration corrigé d'un projectile programmable et frangible Download PDF

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Publication number
EP0802392B1
EP0802392B1 EP96118045A EP96118045A EP0802392B1 EP 0802392 B1 EP0802392 B1 EP 0802392B1 EP 96118045 A EP96118045 A EP 96118045A EP 96118045 A EP96118045 A EP 96118045A EP 0802392 B1 EP0802392 B1 EP 0802392B1
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EP
European Patent Office
Prior art keywords
projectile
time
gun
velocity
vov
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.)
Expired - Lifetime
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EP96118045A
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German (de)
English (en)
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EP0802392A1 (fr
Inventor
André Boss
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.)
Rheinmetall Air Defence AG
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Oerlikon Contraves AG
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Publication of EP0802392A1 publication Critical patent/EP0802392A1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C17/00—Fuze-setting apparatus
    • F42C17/04—Fuze-setting apparatus for electric fuzes
    • 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

Definitions

  • the invention relates to a method for determining a corrected disassembly time a programmable dismountable projectile shot from a gun barrel according to the preamble of claim 1 and a device for performing of the method according to the preamble of claim 9.
  • a device which has a measuring device for the projectile velocity arranged at the mouth of a gun barrel.
  • the measuring device consists of two ring coils arranged at a certain distance from one another.
  • a pulse is generated in short succession in each ring coil due to the change in magnetic flux that occurs.
  • the pulses are fed to evaluation electronics, in which the projectile speed is calculated from the time interval between the pulses and the distance between the ring coils.
  • a transmitting coil is arranged behind the measuring device for the speed, which co-operates with a receiving coil provided in the projectile.
  • the receiving coil is connected to a counter via a high-pass filter, which is connected on the output side to a timer.
  • a disassembly time is formed from the calculated bullet speed and a target distance to a target object, which is transmitted inductively to the bullet immediately after the measuring device has flown through. With this disassembly time, the time fuse is set so that the projectile can be disassembled in the area of the target object.
  • an attacking target can be destroyed by multiple hits, as is known, for example, from a publication OC 2052 d 94 from the company Oerlikon-Contraves, Zurich, if, after the sub-projectiles have been ejected, Time of disassembly the expected area of the target is occupied by a cloud formed by the subprojectiles.
  • the part carrying the subprojectiles is separated and torn open at predetermined breaking points.
  • the ejected subprojects describe a swirl-stabilized trajectory caused by the rotation of the projectile and lie evenly distributed on approximately semicircular curves of circular areas of a cone, so that a good chance of hitting can be achieved.
  • the invention is based on the object of a method and an apparatus To propose the preamble of claims 1 and 9, by means of which avoiding the aforementioned Disadvantages an optimal hit or shot probability is achievable.
  • the advantages achieved with the invention can be seen in the fact that a given disassembly distance is independent of the current measured bullet speed, so that a permanent optimal hit or shot probability is achieved can.
  • the proposed correction factor for correcting the disassembly time is based only on the shooting elements of the meeting point for the control of the weapon, namely the gun angles ⁇ , ⁇ , the hit time Tf and the lead speed V0v des Storey. This makes it possible to have a simple, minimal effort Integration into existing weapon control systems.
  • 1 denotes a fire control and 2 a gun.
  • the fire control system 1 consists of a search sensor 3 for the detection of a target 4 , a follow-up sensor 5 connected to the search radar 3 for target detection, 3-D target tracking and 3-D target measurement, and a fire control computer 6 .
  • the fire control computer 6 has at least one main filter 7 and a lead computing unit 9 .
  • the main filter 7 is connected on the input side to the follow sensor 5 and on the output side to the lead computing unit 9 , the main filter 7 receiving the 3-D target data received from the follow radar 5 in the form of estimated target data Z such as position, speed, acceleration, etc.
  • Computing unit 9 forwards. Meteorological data can be supplied to the lead computing unit 9 via a further input Me. The meaning of the designations on the individual connections or connections is explained in more detail below on the basis of the functional description.
  • a computer of the gun 2 has an evaluation circuit 10 , an update computing unit 11 and a correction computing unit 12 .
  • the evaluation circuit 10 is connected on the input side to a measuring device 14 for the projectile speed, which is arranged at the mouth of a gun barrel 13 and is described in greater detail below with reference to FIG . 2 , and is connected on the output side to the lead computing unit 9 and the update computing unit 11 .
  • the update computing unit 11 is connected on the input side to the reserve and correction computing unit 9, 12 and is connected on the output side to a programming part integrated in the measuring device 14 .
  • the correction computing unit 12 is connected on the input side to the lead computing unit 9 and on the output side to the updating computing unit 11 .
  • a gun servo 15 and a triggering device 16 responding to a fire command are also connected to the lead computing unit 9 .
  • the connections between the fire control 1 and the gun 2 are combined to form a data transmission, which is designated by 17 .
  • the meaning of the designations on the individual connections between the computing units 10, 11, 12 and between the fire control system 1 and the gun 2 is explained in more detail below on the basis of the functional description.
  • 18 and 18 ' designate a floor which is shown during a programming phase ( 18 ) and at the time of disassembly ( 18' ).
  • the projectile 18 is a programmable projectile with primary and secondary ballistics, which is equipped with an ejection charge and a time fuse and is filled with sub-projectiles 19 .
  • a support tube 20 fastened to the muzzle of the gun barrel 13 consists of three parts 21, 22, 23. Between the first part 21 and the second or third part 22, 23 , ring coils 24, 25 are arranged for measuring the bullet speed . On the third part 23 — also called the programming part — a transmission coil 27 held in a coil body 26 is fastened. The type of attachment of the support tube 20 and the three parts 21, 22, 23 to each other is not shown and described. Lines 28, 29 are provided for supplying the ring coils. Soft iron bars 30 are arranged on the circumference of the support tube 20 for the purpose of shielding against magnetic fields which interfere with the measurement.
  • the projectile 18 has a receiving coil 31 which is connected to a timer 34 via a filter 32 and a counter 33 .
  • a pulse is generated in short succession in each ring coil.
  • These pulses are fed to the evaluation circuit 10 ( FIG. 1 ), in which the projectile speed is calculated from the time interval between the pulses and a distance a between the ring coils 24, 25 .
  • a disassembly time is calculated, as described in more detail below, which is transmitted inductively in digital form to the receiving coil 31 when the projectile 18 passes through the transmitting coil 27 for the purpose of setting the counter 32 .
  • Pz denotes a point of disassembly of the projectile 18 .
  • the ejected subprojectiles are, depending on the distance from the point of decomposition Pz, evenly distributed on approximately semicircular curves of (in perspective) circular areas F1, F2, F3, F4 of a cone C.
  • F1, F2, F3, F4 On a first abscissa 1, the distance from the point of decomposition Pz is plotted in meters m, while on a second abscissa II, the area sizes of the areas F1, F2, F3, F4 are plotted in square meters m 2 and their diameter in meters m.
  • 4 and 4 ' denote the target to be defended, which is shown in a hit or shoot position ( 4 ) and in a position ( 4' ) preceding the hit or shoot position.
  • the lead computation unit 9 calculates a target distance RT from a lead speed VOv and the target data Z, taking meteorological data into account for storeys with primary and secondary ballistics.
  • the lead speed VOv is formed, for example, from the mean value of a number of measured projectile speeds Vm supplied via the data transmission 17 , which immediately precede the current measured projectile speed Vm.
  • the lead computing unit 9 also determines a gun angle ⁇ of the azimuth and a gun angle ⁇ of the elevation.
  • the quantities ⁇ , ⁇ , Tz or Tf and VOv are referred to as shooting elements of the meeting point and are fed to the correction computing unit 12 via the data transmission 17 .
  • the current (running) time (t) is interpolated or extrapolated.
  • the tachometer value ⁇ can also be read directly from the gun and for the Invoice can be used.
  • the corrected decomposition time Tz (Vm) is interpolated or extrapolated depending on the validity for the current running time t.
  • the newly calculated disassembly time Tz (Vm, t) is fed to the transmitter coil 27 of the programming part 23 of the measuring device 14 and, as already described above with reference to FIG. 2 , is transmitted inductively to a projectile 18 flying by.
  • the disassembly distance Dz ( Fig. 3,4 ) can be kept constant irrespective of the scatter of the projectile speed , so that an optimal meeting or Probability of shooting can be achieved.

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)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
  • Testing Relating To Insulation (AREA)
  • Automatic Assembly (AREA)

Claims (9)

  1. Procédé de détermination d'un temps de désintégration corrigé (Tz(Vm)) d'un projectile (12) programmable et frangible et tiré d'un canon (13), afin de maintenir constante une distance de désintégration donnée (Dz) entre un point de désintégration (Pz) du projectile (12) et un point d'impact (Pf) du projectile (12) avec une cible présentant une vitesse, où
    des données de détecteur sont mesurées, à partir desquelles on calcule une distance d'impact (RT) du canon (13) à la cible,
    on mesure au niveau de la bouche du canon (13) la vitesse (Vm) du projectile tiré, et
    on utilise pour déterminer le temps de désintégration corrigé (TZ(Vm)) au moins
    la distance d'impact nommée (RT)
    la vitesse nommée (Vm) du projectile (12) et
    la distance de désintégration (Dz),
    caractérisé en ce que
    à partir des données de détecteur mesurées, on détermine de plus une vitesse de dérivation (VOv) du projectile, et en ce que
    le temps de désintégration corrigé (Tz(Vm)) est déterminé à partir du temps de désintégration originellement défini (Tz) par la relation Tz(Vm) = Tz + K * (Vm - VOv) dans laquelle
    Tz(Vm)
    Temps de désintégration corrigé
    Tz
    Temps de désintégration originellement fixé
    K
    Facteur de correction
    Vm
    Vitesse du projectile actuellement mesurée au niveau de la bouche et
    VOv
    Vitesse de dérivation du projectile
    où le facteur de correction (K) est calculé d'après l'équation K= -(1+δTG/δto)*TG*(1+0,25*q*(VOv*Vn)1/2*TG)(1+(TG*(1+0,5*q*(VOv*Vn)1/2*TG)* ω2 ))*VOv dans laquelle
    TG
    Temps de vol du projectile
    δTG/δto
    Dérivée du temps de vol par rapport au temps,
    q
    Grandeur tenant compte de la résistance à l'air du projectile,
    VOv
    Vitesse de dérivation du projectile,
    Vn
    Vitesse normalisée de la balistique et
    ω2
    Grandeur concernant la position du canon.
  2. Procédé selon la revendication 1,
    caractérisé en ce que les calculs sont réalisés de façon répétée par cycle.
  3. Procédé selon la revendication 2,
    caractérisé en ce que la dérivée du temps de vol (TG) en fonction du temps est calculée selon l'équation δTG/δto = (TGi - Tgi-1)/to où
    i
    Cycle actuel
    i - 1
    Cycle précédent, et
    to
    Durée d'un cycle.
  4. Procédé selon la revendication 2,
    caractérisé en ce que la grandeur (ω2) concernant la position du canon (13) est calculée d'après la relation ω2 = (rateα + cosλ)2 + (rateλ)2 où
    α
    Angle de pointage de l'azimut,
    λ
    Angle de pointage de l'élévation,
    rate α
    Vitesse angulaire du canon dans la direction α, et
    rate λ
    Vitesse angulaire du canon dans la direction λ.
  5. Procédé selon la revendication 4,
    caractérisé en ce que les vitesses angulaires du canon dans la direction α ou λ sont calculées d'après les équations rateα = (αi - αi-1)/to rateλ = (λi - λi-1)/to où
    i
    Cycle actuel
    i - 1
    Cycle précédent, et
    to
    Durée d'un cycle.
  6. Procédé selon la revendication 2,
    caractérisé en ce que la grandeur (q) tenant compte de la résistance à l'air du projectile est calculée selon la relation q = (CWn * γ * Gq)/(2 * Gm) où
    CWn
    Coefficient de la résistance à l'air,
    γ
    Densité atmosphérique,
    Gq
    Section du projectile, et
    Gm
    Masse du projectile.
  7. Procédé selon la revendication 1,
    caractérisé en ce que la vitesse de dérivation (VOv) est formée à partir de la valeur moyenne d'un nombre de vitesses de projectile mesurées, qui précèdent directement la vitesse du projectile (Vm) actuellement mesurée.
  8. Procédé selon la revendication 1,
    caractérisé en ce que le temps de désintégration corrigé (Tz[Vm]) est interpolé ou extrapolé en fonction de la validité temporelle au temps en cours (t).
  9. Dispositif de réalisation du procédé selon la revendication 1, possédant un ordinateur de la conduite du tir (6), qui est relié à un ordinateur de la pièce de canon par une transmission de données (17), l'ordinateur de la conduite du tir (6) présentant au moins une unité de calcul de dérivation (9), et où l'ordinateur de la pièce du canon présente au moins un circuit d'exploitation (10) permettant de déterminer la vitesse du projectile (Vm) et une unité de calcul de date (11) qui est reliée en entrée au circuit d'exploitation (10) pour transmettre la vitesse du projectile (Vm), et en sortie à un élément de programmation (23) d'un appareil de mesure (14) de la vitesse du projectile,
    caractérisé en ce qu'il est prévu une unité de calcul de correction (12) pour calculer le facteur de correction (K),
    l'unité de calcul de correction (12) étant reliée en entrée par la transmission de données (17) à l'unité de calcul de dérivation (9) à des fins de transmission des éléments balistiques à la base du calcul angle de pointage (α, λ), vitesse de dérivation (VOv) et temps de désintégration ou d'impact (Tz, Tf),
    en ce que l'unité de calcul de date (11), à des fins de transmission de la vitesse de dérivation (VOv) et du temps de désintégration ou d'impact (Tz, Tf), est reliée en entrée à l'unité de calcul de dérivation (9) par la transmission de données (17) et à l'unité de calcul de correction (11) en entrée pour transmettre le facteur de correction (K),
    le temps de désintégration corrigé (Tz(Vm)) déterminé par l'unité de calcul de date (11) étant transmis à l'élément de programmation (23) par la liaison en sortie de l'unité de calcul de date (11).
EP96118045A 1996-04-19 1996-11-11 Procédé et dispositif de détermination d'un temps de désintégration corrigé d'un projectile programmable et frangible Expired - Lifetime EP0802392B1 (fr)

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CH99996 1996-04-19
CH999/96 1996-04-19
CH99996 1996-04-19

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EP0802392A1 EP0802392A1 (fr) 1997-10-22
EP0802392B1 true EP0802392B1 (fr) 2000-10-18

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US (1) US5814756A (fr)
EP (1) EP0802392B1 (fr)
JP (1) JP3891618B2 (fr)
KR (1) KR100436385B1 (fr)
AT (1) ATE197091T1 (fr)
AU (1) AU716410B2 (fr)
CA (1) CA2190385C (fr)
DE (1) DE59606026D1 (fr)
NO (1) NO311953B1 (fr)
SG (1) SG83656A1 (fr)
TR (1) TR199600951A1 (fr)
ZA (1) ZA969542B (fr)

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CA2190385A1 (fr) 1997-10-20
ATE197091T1 (de) 2000-11-15
JPH09280799A (ja) 1997-10-31
SG83656A1 (en) 2001-10-16
DE59606026D1 (de) 2000-11-23
CA2190385C (fr) 2003-05-20
NO964755D0 (no) 1996-11-08
KR100436385B1 (ko) 2004-08-25
TR199600951A1 (xx) 1997-11-21
EP0802392A1 (fr) 1997-10-22
KR970070941A (ko) 1997-11-07
NO311953B1 (no) 2002-02-18
ZA969542B (en) 1997-06-17
US5814756A (en) 1998-09-29
JP3891618B2 (ja) 2007-03-14
NO964755L (no) 1997-10-20
AU7172996A (en) 1997-10-23
AU716410B2 (en) 2000-02-24

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