EP1848953B1 - Procede de determination d'une solution de conduite de tir - Google Patents

Procede de determination d'une solution de conduite de tir Download PDF

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Publication number
EP1848953B1
EP1848953B1 EP06742344A EP06742344A EP1848953B1 EP 1848953 B1 EP1848953 B1 EP 1848953B1 EP 06742344 A EP06742344 A EP 06742344A EP 06742344 A EP06742344 A EP 06742344A EP 1848953 B1 EP1848953 B1 EP 1848953B1
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Prior art keywords
projectile
weapon
flight
azimuth
movement
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German (de)
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EP1848953A1 (fr
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Hendrik Rothe
Sven SCHRÖDER
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Krauss Maffei Wegmann GmbH and Co KG
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Krauss Maffei Wegmann GmbH and Co KG
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41WEAPONS
    • F41GWEAPON SIGHTS; AIMING
    • F41G5/00Elevating or traversing control systems for guns
    • F41G5/14Elevating or traversing control systems for guns for vehicle-borne guns
    • F41G5/20Elevating or traversing control systems for guns for vehicle-borne guns for guns on ships
    • F41G5/22Elevating or traversing control systems for guns for vehicle-borne guns for guns on ships to compensate for rolling or pitching
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41WEAPONS
    • F41GWEAPON SIGHTS; AIMING
    • F41G3/00Aiming or laying means
    • F41G3/06Aiming or laying means with rangefinder
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41WEAPONS
    • F41GWEAPON SIGHTS; AIMING
    • F41G3/00Aiming or laying means
    • F41G3/08Aiming or laying means with means for compensating for speed, direction, temperature, pressure, or humidity of the atmosphere
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41WEAPONS
    • F41GWEAPON SIGHTS; AIMING
    • F41G3/00Aiming or laying means
    • F41G3/22Aiming or laying means for vehicle-borne armament, e.g. on aircraft

Definitions

  • the starting point of the invention is the difficulty of determining the point of impact and the time of flight of a projectile fired from a weapon movable in azimuth and elevation, i. to solve the so-called motion differential equations of external ballistics.
  • the projectile impact point and the projectile flight time depend not only on the set azimuth angle and elevation angle, but also on the ammunition used and other influences such as the wind or the temperature. Due to the large number and uncertainty of the parameters, it is i.A. not possible to calculate the projectile impact point and the projectile flight time. Therefore, different motion differential equation solution techniques are used, such as numerical integration, the use of bullet boards, or approximations.
  • NABK Ballistic Kernel
  • the Feuerleitaims is determined in indirect or direct straightening in the presence of a relative movement between the weapon and the target object such that a plurality of value pairs for azimuth and elevation is specified.
  • the motion differential equations are then solved by the corresponding prior art method until the Feuerleitren was found.
  • the disadvantage of this approach is that a large number of value pairs for azimuth and elevation must be specified until a Feuerleitren has been found.
  • the thus required computing time for the frequent solution of the motion differential equations makes practical use of shooting with this method more difficult in the presence of any relative movement between the weapon and the target object.
  • the object of the invention is to determine a Feuerleitans in indirect or direct straightening in the presence of any relative movement between the weapon and the target object with as few solutions of the motion differential equations.
  • the movement of the target object, represented by KS target is determined relative to I *, resulting in both a position vector of the relative movement r rel and a time-dependent vector of the relative velocity v rel with respect to I *.
  • the Fig. 1 shows a weapon system in a schematic representation, as it comes for example on a ship used.
  • the weapon has an elevation straightening drive 2 and an azimuth straightening drive 3 and weapon stabilization means 4.
  • the weapon system has a Feuerleitrechner 5, which controls parts of the weapon system.
  • the Feuerleitrechner 5 has inter alia the task to determine the Feuerleitives, ie to determine the values for the azimuth angle and elevation angle such that the target object is hit.
  • the process of determining the Feuerleitives is in Fig. 2 described. In the following, it is assumed that the fire command has been issued by the responsible person and the weapon 1 has been loaded.
  • the origin of the coordinate system KS weapon is fixed in the center of the muzzle of the weapon.
  • the speeds v M and v 0 are determined by suitable technical means and are to be regarded as known.
  • the determined values of the projectile impact point and the projectile flight time are also saved. Subsequently, a further integration of the motion differential equations is carried out by means of the NABK, whereby, however, the value of ⁇ is changed by a small value ⁇ [IV].
  • the determined values of the projectile impact point and the projectile flight time are also saved. From the stored calculation results, the partial derivatives of the target coordinates xSchange and ySlange can be estimated according to azimuth and elevation by means of a first-order difference formula which forms the Jacobi matrix of the problem [V]. After calculating the inverse of the Jacobian matrix, the Newton-Raphson step is performed according to the given equation [VI].

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Fire Alarms (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)

Claims (14)

  1. Procédé de détermination d'une solution de conduite de tir en présence d'un mouvement relatif entre une arme tirant un projectile et une cible à atteindre,
    - dans lequel l'arme est réglable au niveau de l'angle azimutal α et de l'angle d'élévation ε,
    - dans lequel un procédé de résolution d'équation différentielle de mouvement permet de déterminer le point d'impact de projectile et le temps de vol de projectile avec des valeurs prédéfinies pour l'angle azimutal α et l'angle d'élévation ε ainsi qu'avec des munitions prédéfinies et en tenant compte de facteurs externes, en particulier en tenant compte de données météorologiques,
    - dans lequel l'angle azimutal α et l'angle d'élévation ε en tant que paramètres d'entrée du procédé de résolution d'équation différentielle de mouvement sont amenés à varier jusqu'à ce qu'une solution de conduite de tir soit trouvée, en tenant compte de la vitesse de l'arme et de la vitesse de la cible,
    - dans lequel, en utilisant une fonction J(α,ε) qui adopte pour le cas où l'angle azimutal et l'angle d'élévation représentent une solution de guidage de tir, une valeur optimale J*, en particulier la valeur zéro, et
    - dans lequel l'angle azimutal α et l'angle d'élévation ε sont modifiés par itérations en utilisant des procédés mathématiques, en particulier des procédés de recherche de point zéro, d'une façon ciblée telle que la valeur optimale J* est trouvée.
  2. Procédé selon la revendication 1, caractérisé en ce que la fonction J(α,ε) se présente sous la forme suivante : J α ϵ = x ˜ α ϵ y ˜ α ϵ
    Figure imgb0023

    x ˜ α ϵ = x Projectile t vol - x rel t vol
    Figure imgb0024
    y ˜ α ϵ = y Projectile t vol - y rel t vol
    Figure imgb0025

    avec
    - xProjectile(tvol), yProjectile(tvol): coordonnées x et y du projectile au temps de vol de projectile tvol
    - xrel(tvol), yrel(tvol) : coordonnées x et y de la cible au temps de vol de projectile tvol
  3. Procédé selon la revendication 2, caractérisé en ce que le procédé itératif de Newton Raphson est utilisé comme procédé mathématique, dans lequel l'angle azimutal α et l'angle d'élévation ε sont modifiés de façon ciblée selon l'équation suivante : ( α ϵ ) i + 1 = ( α ϵ ) i - J i - 1 ( x ˜ y ˜ ) i
    Figure imgb0026

    avec la matrice jacobienne J = x ˜ α x ˜ ϵ y ˜ α y ˜ ϵ
    Figure imgb0027

    et J - 1 = 1 x ˜ α y ˜ ε - x ˜ ε y ˜ α ( y ˜ ε - x ˜ ε - y ˜ α x ˜ α )
    Figure imgb0028
  4. Procédé selon une ou plusieurs des revendications 1 à 3, caractérisé par les étapes de procédé suivantes :
    i. Les équations différentielles de mouvement sont résolues au moyen du procédé de résolution d'équation différentielle de mouvement pour une paire de valeurs initiales (α00).
    ii. Les équations différentielles de mouvement sont résolues au moyen du procédé de résolution d'équation différentielle de mouvement pour une paire de valeurs (α',ε), avec α' = α + δα, donc avec un angle azimutal modifié, en particulier légèrement modifié, par rapport à l'étape précédente.
    iii. Les équations différentielles de mouvement sont résolues au moyen du procédé de résolution d'équation différentielle de mouvement pour une paire de valeurs (α,ε'), avec ε' = ε + δε, donc avec un angle d'élévation modifié, en particulier légèrement modifié, par rapport à l'étape précédente.
    iv. La matrice jacobienne est déterminée au moins approximativement.
    v. On applique le procédé de Newton Raphson qui fournit une nouvelle paire de valeurs (α,ε).
    vi. Les équations différentielles de mouvement sont résolues au moyen du procédé de résolution d'équation différentielle de mouvement pour la nouvelle paire de valeurs (α,ε).
    vii. On vérifie si une solution de conduite de tir a été trouvée, et au cas où aucune solution de conduite de tir n'aurait été trouvée, le procédé continue par itération à l'étape ii de la présente revendication.
  5. Procédé selon une ou plusieurs des revendications 1 à 4, caractérisé en ce que le procédé de résolution d'équation différentielle de mouvement est assisté par le noyau balistique d'artillerie OTAN (NABK).
  6. Procédé selon une ou plusieurs des revendications 1 5, caractérisé en ce que dans des points optimaux de l'arme et de la cible, respectivement un système de coordonnées KSArme et KSCible est fixé.
  7. Procédé selon une ou plusieurs des revendications à 6, caractérisé en ce que quand le projectile quitte le canon de l'arme, le temps t est réglé sur une valeur libre mais fixe tfix, en particulier sur tfix = 0.
  8. Procédé selon une ou plusieurs des revendications à 7, caractérisé en ce que quand le projectile quitte le canon de l'arme, le vecteur local du projectile rProjectile est réglé sur une valeur libre mais fixe rfix, en particulier sur rfix = 0.
  9. Procédé selon une ou plusieurs des revendications 1 à 8, caractérisé en ce que le système de coordonnées KSArme est réglé sur le système initial stabilisé I*.
  10. Procédé selon une ou plusieurs des revendications 1 à 9, caractérisé en ce que le vecteur de vitesse de la gueule de cylindre vM à l'instant t = tfix est ajouté au vecteur de vitesse v0 en direction de la ligne de tir de l'arme, ce qui donne la nouvelle vitesse initiale v0*.
  11. Procédé selon une ou plusieurs des revendications 1 à 10, caractérisé en ce que le mouvement de la cible, représentée par KSCible, par rapport I* est déterminé, de sorte qu'il en résulte aussi bien un vecteur local du mouvement relatif frel qu'un vecteur dépendant du temps de la vitesse relative vrel par rapport à I*.
  12. Procédé selon une ou plusieurs des revendications 1 à 11, caractérisé en ce que le vecteur déterminé par rapport à I* de la vitesse absolue du vent vW subit une correction adéquate au moyen du vecteur connu du mouvement relatif vrel entre l'arme et la cible pour les calculs balistiques, de sorte qu'il en résulte un vecteur de la vitesse corrigée du vent VWkorr.
  13. Procédé selon une ou plusieurs des revendications 1 à 12, caractérisé en ce que la détermination de la solution de conduite de tir est réalisée au moyen d'un calculateur de conduite de tir.
  14. Procédé selon une ou plusieurs des revendications 1 à 13, caractérisé en ce que le calculateur de conduite de tir génère au moyen de la solution de conduite de tir déterminée des signaux de commande qui sont amenés à un entraînement orienté en azimut et à un entraînement orienté en élévation pour la poursuite de l'arme en azimut et en élévation.
EP06742344A 2005-05-17 2006-05-15 Procede de determination d'une solution de conduite de tir Active EP1848953B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005023739A DE102005023739A1 (de) 2005-05-17 2005-05-17 Verfahren zur Ermittlung einer Feuerleitlösung
PCT/DE2006/000836 WO2006122527A1 (fr) 2005-05-17 2006-05-15 Procede de determination d'une solution de conduite de tir

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EP1848953A1 EP1848953A1 (fr) 2007-10-31
EP1848953B1 true EP1848953B1 (fr) 2008-07-16

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US (1) US7815115B2 (fr)
EP (1) EP1848953B1 (fr)
AT (1) ATE401546T1 (fr)
CA (1) CA2585501C (fr)
DE (2) DE102005023739A1 (fr)
ES (1) ES2309961T3 (fr)
PT (1) PT1848953E (fr)
WO (1) WO2006122527A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005038979A1 (de) 2005-08-18 2007-02-22 Rheinmetall Defence Electronics Gmbh Verfahren zur Erhöhung der Ersttrefferwahrscheinlichkeit einer ballistischen Waffe
DE102006036257A1 (de) * 2006-08-03 2008-02-07 Rheinmetall Defence Electronics Gmbh Bestimmung der einzustellenden Ausrichtung einer ballistischen Waffe
DE102007007403A1 (de) 2007-02-12 2008-08-21 Krauss-Maffei Wegmann Gmbh & Co. Kg Verfahren und Vorrichtung zum Schutz gegen fliegende Angriffsmunitionskörper
DE102007018507B4 (de) * 2007-04-19 2012-05-03 Krauss-Maffei Wegmann Gmbh & Co. Kg Verfahren und Vorrichtung zur Bekämpfung einer Angriffsmunitionskörper-Abschussvorrichtung
US8186276B1 (en) 2009-03-18 2012-05-29 Raytheon Company Entrapment systems and apparatuses for containing projectiles from an explosion
US8157169B2 (en) * 2009-11-02 2012-04-17 Raytheon Company Projectile targeting system
US8412450B1 (en) 2010-03-17 2013-04-02 The United States Of America As Represented By The Secretary Of The Navy Method for navigating in GPS denied environments
US8336776B2 (en) 2010-06-30 2012-12-25 Trijicon, Inc. Aiming system for weapon
US8172139B1 (en) 2010-11-22 2012-05-08 Bitterroot Advance Ballistics Research, LLC Ballistic ranging methods and systems for inclined shooting
DE102013007229A1 (de) 2013-04-26 2014-10-30 Rheinmetall Waffe Munition Gmbh Verfahren zum Betrieb eines Waffensystems
CN109829945B (zh) * 2018-11-28 2022-11-18 西安工业大学 一种近炸破片分布场弹目交汇的目标毁伤评估方法

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US4128837A (en) 1968-07-22 1978-12-05 Rockwell International Corporation Prediction computation for weapon control
FR2378318A1 (fr) * 1977-01-21 1978-08-18 Thomson Csf Systeme de poursuite d'une cible mobile
DE3407035C1 (de) 1984-02-27 1992-04-09 Siemens Ag Schaltungsanordnung zur Vorhalterechnung aus den Zustandsgroessen bewegter Objekte
FR2627302B1 (fr) 1988-02-17 1990-06-08 Thomson Csf Procede et dispositif de calcul du pas d'integration de trajectoire d'obus
US6973865B1 (en) * 2003-12-12 2005-12-13 Raytheon Company Dynamic pointing accuracy evaluation system and method used with a gun that fires a projectile under control of an automated fire control system

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DE102005023739A1 (de) 2006-12-07
US7815115B2 (en) 2010-10-19
DE502006001134D1 (de) 2008-08-28
CA2585501A1 (fr) 2006-11-23
EP1848953A1 (fr) 2007-10-31
WO2006122527A1 (fr) 2006-11-23
CA2585501C (fr) 2011-02-15
US20090212108A1 (en) 2009-08-27
PT1848953E (pt) 2008-10-16
ES2309961T3 (es) 2008-12-16
ATE401546T1 (de) 2008-08-15

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