EP1407218A1 - Method for correcting the flight path of ballistically fired spin-stabilised artillery ammunition - Google Patents

Method for correcting the flight path of ballistically fired spin-stabilised artillery ammunition

Info

Publication number
EP1407218A1
EP1407218A1 EP02758333A EP02758333A EP1407218A1 EP 1407218 A1 EP1407218 A1 EP 1407218A1 EP 02758333 A EP02758333 A EP 02758333A EP 02758333 A EP02758333 A EP 02758333A EP 1407218 A1 EP1407218 A1 EP 1407218A1
Authority
EP
European Patent Office
Prior art keywords
ammunition
spin
tip
detonator
correcting
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
EP02758333A
Other languages
German (de)
French (fr)
Other versions
EP1407218B1 (en
Inventor
Jürgen Leininger
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.)
Diehl Defence GmbH and Co KG
Original Assignee
Diehl Munitionssysteme GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Diehl Munitionssysteme GmbH and Co KG filed Critical Diehl Munitionssysteme GmbH and Co KG
Publication of EP1407218A1 publication Critical patent/EP1407218A1/en
Application granted granted Critical
Publication of EP1407218B1 publication Critical patent/EP1407218B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B10/00—Means for influencing, e.g. improving, the aerodynamic properties of projectiles or missiles; Arrangements on projectiles or missiles for stabilising, steering, range-reducing, range-increasing or fall-retarding
    • F42B10/60—Steering arrangements
    • F42B10/62—Steering by movement of flight surfaces
    • F42B10/64—Steering by movement of flight surfaces of fins

Definitions

  • the invention relates to a method according to the preamble of claim 1, as is known from DE 198 45 611 AI.
  • the detonator tip which can be screwed onto the ammunition body, has a component which can be rotated for swirl reduction in relation to the spin-stabilized ammunition body and from which two braking surfaces rigidly held with the same angle, in the manner of canard wings, transversely to the
  • Swirl axis can be extended in order to exert a directed braking effect on the current trajectory of the ammunition, depending on the current roll position in the room, in order to increase the accuracy of the target.
  • Swirl axis can be extended in order to exert a directed braking effect on the current trajectory of the ammunition, depending on the current roll position in the room, in order to increase the accuracy of the target.
  • the trajectory-selective braking measure can only shorten the trajectory, so that the scatter in the hit pattern can thus only be narrowed in one direction.
  • the invention is based on the object of making the error balance of ballistic ammunition fired over a target area more favorable overall.
  • the pitch or yaw adjustment which is in phase with respect to the current RoU position in the room, is carried out under the direction of a roll position sensor in the detonator tip, which indicates how the adjusting shafts of the two canard surfaces are aligned with respect to the earth's horizon are in which spatial direction the flight path is lengthened or shortened by a current setting of the canard surfaces.
  • a high-speed low-voltage DC motor is preferable, preferably in the coaxial design of a wave gear motor, because of the small installation space, the self-locking effect of a strong gear reduction and its inexpensive availability.
  • a torsionally rigid coupling of the two control shafts can be provided in order to get by with a single drive system; or the two canards are independent of each other via their own drives and can also be adjusted in opposite directions if necessary in the interest of highly dynamic control.
  • the cost of electrical circuitry can be reduced even more if, instead of the continuous adjustment control for alternately setting the canard surfaces for the period of a maximum of a quarter turn of the ammunition body around its swirl axis, a three-point subsystem that is always only temporarily activated, or even a two-point subsystem that always switches in the correct roll phase is used.
  • the electrical energy for the starting control can be provided by batteries or even better generated in the fuse tip itself as a generator, namely by taking advantage of the relative movement between the ammunition body stabilized by faster rolling and the reduced speed of the fuse tip decoupled by the ammunition body via a pivot bearing ,
  • a magnetic sensor that responds to the earth's magnetic field is preferred because it is suitable for all weather conditions over optronic horizon sensors and is cheaper and smaller in size compared to inertial platforms.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Air Bags (AREA)
  • Materials For Photolithography (AREA)
  • Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
  • Breeding Of Plants And Reproduction By Means Of Culturing (AREA)
  • Image Analysis (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
  • Control Of Turbines (AREA)

Abstract

At very low apparatus expenditure, namely with a canard system which is adjustable in a single-axis mode, it is possible to achieve a spatially two-dimensional trajectory correction in respect of the artillery ammunition which in itself is unguided, with the additional degree of freedom in respect of trajectory extension and thus an extraordinary increase in the precision of delivery in relation to the predetermined target point.

Description

Verfahren zur Flugbahnkorrektur ballistisch verschossener drallstabilisierter Artilleriemunition Procedure for correcting the trajectory of ballistic missile-stabilized artillery ammunition

Die Erfindung betrifft ein Verfahren gemäß dem Oberbegriff des Anspruches 1, wie es aus der DE 198 45 611 AI bekannt ist. Dort weist die auf den Munitionskörper aufschraubbare Zünderspitze ein zum Drallabbau gegenüber dem drallstabilisierten Munitionskörper verdrehbares Bauteil auf, aus dem zwei starr mit glei- eher Anstellung gehalterte Bremsflächen nach Art von Canardflügeln quer zurThe invention relates to a method according to the preamble of claim 1, as is known from DE 198 45 611 AI. There, the detonator tip, which can be screwed onto the ammunition body, has a component which can be rotated for swirl reduction in relation to the spin-stabilized ammunition body and from which two braking surfaces rigidly held with the same angle, in the manner of canard wings, transversely to the

Drallachse ausgefahren werden können, um zur Steigerung der Zielgenauigkeit des vorgegeben Trefferpunktes je nach der momentanen Roll-Lage im Raum eine gerichtete Bremswirkung auf die aktuelle Flugbahn der Munition auszuüben. Zum gleichen Zweck mittels einer solchen Flugbahnverkürzung durch Steigerung der Bremswirkung war es aus der WO 98/01719 schon bekannt, zwei Scheiben ohneSwirl axis can be extended in order to exert a directed braking effect on the current trajectory of the ammunition, depending on the current roll position in the room, in order to increase the accuracy of the target. For the same purpose by means of such a shortening of the trajectory by increasing the braking effect, it was already known from WO 98/01719, two disks without

Anstellung einander diametral gegenüber radial aus der Ogive eines Projektiles auszufahren.Extend each other diametrically opposite radially from the ogive of a projectile.

Allerdings wird der in der Projektilspitze verfügbare Einbauraum größtenteils für die Sicherungs- und Zündeinrichtungen benötigt, schon der zusätzliche Einbau einer Empfängerschaltung für etwa Radar-Abstandsmessung oder Satellitennavigation bereitet große Schwierigkeiten. Deshalb ist der notwendige Einbauraum für hier einzufahrende Bremsflächen und für deren Bewegungs- und Halterungsmechanismen der dynamischen Belastung des Anströmdruckes entgegen kaum hin- reichend verfügbar. Von grundsätzlichem Nachteil ist bei jenen vorbekanntenHowever, the installation space available in the projectile tip is largely required for the safety and ignition devices, and even the additional installation of a receiver circuit for radar distance measurement or satellite navigation, for example, poses great difficulties. Therefore, the necessary installation space for braking surfaces to be retracted here and for their movement and mounting mechanisms against the dynamic loading of the inflow pressure is hardly available. A fundamental disadvantage is that of those known

Lösungen im übrigen, daß durch die richtungsselektive Bremsmaßnahme die Flugbahn nur verkürzt werden kann, daß also damit die Streuung im Trefferbild nur in einer Richtung eingeengt werden kann. In Erkenntnis dieser Gegebenheiten liegt der Erfindung die Aufgabe zugrunde, den Fehlerhaushalt ballistisch über ein Zielgebiet verschossener Munition insgesamt günstiger zu gestalten.Solutions, moreover, that the trajectory-selective braking measure can only shorten the trajectory, so that the scatter in the hit pattern can thus only be narrowed in one direction. In recognition of these circumstances, the invention is based on the object of making the error balance of ballistic ammunition fired over a target area more favorable overall.

Diese Aufgabe ist erfindungsgemäß dadurch gelöst, daß gemäß den im Hauptanspruch angegebenen wesentlichen Kombinationsmerkmalen und gemäß den in den Unteransprüchen gekennzeichneten Abwandlungen und Weiterbildungen nun die Längs- und Querstreuungen nicht mehr nur in Richtung kürzerer Reichweiten kompensiert werden, sondern außer der gerichteten Verkürzung nun auch ein ge- zieltes Strecken der aktuellen Flugbahn ermöglicht wird.This object is achieved in that in accordance with the essential combination features specified in the main claim and in accordance with the modifications and further developments characterized in the subclaims, the longitudinal and transverse scattering are no longer only compensated in the direction of shorter ranges, but in addition to the directional shortening, now also a ge - Targeted stretching of the current trajectory is made possible.

Dafür sind seitlich an der verjüngten Frontpartie der Munition, nämlich im vom Munitionskörper rollentkoppelten Zünder an der Spitze der Ogive mittels radial zur Drallachse orientierter Stellwellen einander radial gegenüber zwei kaliberglei- ehe, nicht einziehbare aber durch Verdrehen um ihre Stellwellen in beiden Richtungen gegenüber der neutralen Stellung anstellbare Canardflügelflächen gelagert, mit denen je nach der momentanen Lage im Raum entweder eine Nickbewegung zur Beeinflussung der Längsstreuung oder eine Gierbewegung zur Beeinflussung der Querstreuung gezielt hervorgerufen werden kann. Die in Bezug auf die mo- mentane RoU-Lage im Raum phasenrichtige Nick- oder Gier-Anstellung erfolgt unter der Regie eines Roll-Lagesensors in der Zünder-Spitze, der angibt, wie die Stellwellen der beiden Canardflächen gerade in Bezug auf den Erdhorizont ausgerichtet sind, in welche Raumrichtung also die Flugbahn durch eine aktuelle Anstellung der Canardflächen verlängert oder verkürzt wird.For this purpose, on the side of the tapered front section of the ammunition, namely in the detonator that is decoupled from the ammunition at the tip of the ogive by means of actuating shafts oriented radially to the swirl axis, are radially opposed to two caliber-equal, non-retractable but by twisting about their adjusting shafts in both directions compared to the neutral position adjustable canard wing surfaces with which, depending on the current position in the room, either a pitching movement to influence the longitudinal scattering or a yawing movement to influence the transverse scattering. The pitch or yaw adjustment, which is in phase with respect to the current RoU position in the room, is carried out under the direction of a roll position sensor in the detonator tip, which indicates how the adjusting shafts of the two canard surfaces are aligned with respect to the earth's horizon are in which spatial direction the flight path is lengthened or shortened by a current setting of the canard surfaces.

Für solche gesteuerte Anstellung der Canards ist wegen des geringen Einbaurau- mes, der selbsthemmenden Wirkung einer starken Getriebeuntersetzung und seiner preiswerten Verfügbarkeit ein hochtouriger Kleinspannungs-Gleichstrommo- tor zu bevorzugen, vorzugsweise in der koaxialen Bauform eines Wellgetriebe- motors. Dabei kann eine drehstarre Kopplung der beiden Stellwellen vorgesehen sein, um mit einem einzigen Antriebssystem auszukommen; oder die beiden Canards sind über jeweils eigene Antriebe unabhängig voneinander und dann im Interesse einer hochdynamischen Steuerung bedarfsweise auch gegensinnig einstellbar. Der Aufwand an elektrischer Schaltungstechnik läßt sich noch verringern, wenn statt der kontinuierlichen Anstellsteuerung zum wechselweisen Einstellen der Canardflächen für die Zeitspanne von jeweils maximal einer Viertelumdrehung des Munitionskörpers um seine Drallachse dafür ein immer nur gezielt vorübergehend aktiv geschaltetes Dreipunkt- oder gar ein stets rollphasenrichtig umschaltendes Zweipunktsteilsystem eingesetzt wird.For such controlled setting of the canards, a high-speed low-voltage DC motor is preferable, preferably in the coaxial design of a wave gear motor, because of the small installation space, the self-locking effect of a strong gear reduction and its inexpensive availability. A torsionally rigid coupling of the two control shafts can be provided in order to get by with a single drive system; or the two canards are independent of each other via their own drives and can also be adjusted in opposite directions if necessary in the interest of highly dynamic control. The cost of electrical circuitry can be reduced even more if, instead of the continuous adjustment control for alternately setting the canard surfaces for the period of a maximum of a quarter turn of the ammunition body around its swirl axis, a three-point subsystem that is always only temporarily activated, or even a two-point subsystem that always switches in the correct roll phase is used.

Die elektrische Energie für die Anstellsteuerung kann von Batterien bereitgestellt oder bessern noch in der Zünder-Spitze selbst generatorisch erzeugt werden, nämlich unter Ausnutzen der Relativbewegung zwischen dem durch schnelleres Rollen stabilisierten Munitionskörper und der dagegen verringerten Drehzahl der vom Munitionskörper über ein Drehlager drehentkoppelten Zünder-Spitze.The electrical energy for the starting control can be provided by batteries or even better generated in the fuse tip itself as a generator, namely by taking advantage of the relative movement between the ammunition body stabilized by faster rolling and the reduced speed of the fuse tip decoupled by the ammunition body via a pivot bearing ,

Für die Lagebestimmung der Zünder-Spitze im Raum ist ein auf das Erdmagnetfeld ansprechender Magnetsensor zu bevorzugen, weil er gegenüber optronischen Horizontsensoren allwetter-tauglich und gegenüber Inertialplattformen preisgünstiger sowie kleinerbauend ist.For determining the position of the detonator tip in the room, a magnetic sensor that responds to the earth's magnetic field is preferred because it is suitable for all weather conditions over optronic horizon sensors and is cheaper and smaller in size compared to inertial platforms.

So ist mit denkbar geringem apparativem Aufwand, nämlich mit einem einachsig einstellbaren Canardsystem, infolge des zusätzlichen Freiheitsgrades der Bahnverlängerung eine räumliche Bahnkorrektur der an sich ungelenkten Artilleriemu- nition und somit eine außerordentliche Steigerung der Ablieferungspräzision in Bezug auf den vorgegebenen Zielpunkt erreichbar. Thus, with the least possible expenditure on equipment, namely with a uniaxially adjustable canard system, a spatial orbit correction of the artillery ammunition, which is inherently unguided, and thus an extraordinary increase in delivery precision in relation to the specified target point can be achieved due to the additional degree of freedom of the path extension.

Claims

Patentansprüche claims 1. Verfahren zu abhängig von der momentanen RoU-Lage im Raum erfolgender Flugbahnkorrektur einer ballistisch verbrachten drallstabilisierten Artilleriemunition mittels an von der gegenüber ihrem Munitionskörper verjüngten und rollentkoppelten Zünder-Spitze einachsig radial orientierter Canardflächen, dadurch gekennzeichnet, daß von der gegenüber dem Munitionskörper verjüngten Zünder-Spitze etwa vollkalibrig fest vorstehende, um radial zur Drallachse orientierte Stellwellen anstellbare Canardflächen in beiden Richtungen um die Neutralstel- hing herum angestellt werden.1. A method for, depending on the current RoU position in the space, trajectory correction of a ballistically spent, spin-stabilized artillery ammunition by means of canard surfaces which are axially oriented and radially decoupled from their ammunition body and roll-decoupled detonator tip, characterized in that the detonator tapered towards the ammunition body The tip of the full-caliber, protruding canard surfaces that can be adjusted radially to the swirl axis can be set in both directions around the neutral position. Verfahren nach Ansprach 1, dadurch gekennzeichnet, daß die Stellwellen aus dem generatorisch genutzten Drehzahlunterschied zwischen Zünder-Spitze und Munitionskörper versorgt elektromotorisch verdreht werden.Method according spoke 1, characterized in that the control shafts are rotated by an electric motor supplied by the difference in speed used between the detonator tip and the ammunition body. 3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Stellwellen diskontinuierlich verdreht werden.3. The method according to claim 1 or 2, characterized in that the actuating shafts are rotated discontinuously. 4. Verfahren nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Stellwellen unterschiedlich verdreht werden. 4. The method according to any one of the preceding claims, characterized in that the actuating shafts are rotated differently.
EP02758333A 2001-07-17 2002-07-11 Method for correcting the flight path of ballistically fired spin-stabilised artillery ammunition Expired - Lifetime EP1407218B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10134785A DE10134785A1 (en) 2001-07-17 2001-07-17 Procedure for correcting the trajectory of ballistic missile-stabilized artillery ammunition
DE10134785 2001-07-17
PCT/EP2002/007730 WO2003008897A1 (en) 2001-07-17 2002-07-11 Method for correcting the flight path of ballistically fired spin-stabilised artillery ammunition

Publications (2)

Publication Number Publication Date
EP1407218A1 true EP1407218A1 (en) 2004-04-14
EP1407218B1 EP1407218B1 (en) 2010-12-08

Family

ID=7692125

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02758333A Expired - Lifetime EP1407218B1 (en) 2001-07-17 2002-07-11 Method for correcting the flight path of ballistically fired spin-stabilised artillery ammunition

Country Status (7)

Country Link
US (1) US7267298B2 (en)
EP (1) EP1407218B1 (en)
KR (1) KR20040013142A (en)
AT (1) ATE491132T1 (en)
DE (2) DE10134785A1 (en)
IL (1) IL159826A0 (en)
WO (1) WO2003008897A1 (en)

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US8916810B2 (en) * 2011-03-30 2014-12-23 Raytheon Company Steerable spin-stabilized projectile
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US11555679B1 (en) 2017-07-07 2023-01-17 Northrop Grumman Systems Corporation Active spin control
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Also Published As

Publication number Publication date
EP1407218B1 (en) 2010-12-08
US7267298B2 (en) 2007-09-11
WO2003008897A1 (en) 2003-01-30
DE50214803D1 (en) 2011-01-20
DE10134785A1 (en) 2003-02-06
ATE491132T1 (en) 2010-12-15
US20040262448A1 (en) 2004-12-30
KR20040013142A (en) 2004-02-11
IL159826A0 (en) 2004-06-20

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