[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

EP0323839B1 - Air-drop body with a parachute - Google Patents

Air-drop body with a parachute Download PDF

Info

Publication number
EP0323839B1
EP0323839B1 EP89100125A EP89100125A EP0323839B1 EP 0323839 B1 EP0323839 B1 EP 0323839B1 EP 89100125 A EP89100125 A EP 89100125A EP 89100125 A EP89100125 A EP 89100125A EP 0323839 B1 EP0323839 B1 EP 0323839B1
Authority
EP
European Patent Office
Prior art keywords
jettisonable
body according
parachute
rear wall
cassette
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
Application number
EP89100125A
Other languages
German (de)
French (fr)
Other versions
EP0323839A2 (en
EP0323839A3 (en
Inventor
Günter Postler
Wolfgang von Entress-Fürsteneck
Werner Rüdenauer
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 Verwaltungs Stiftung
Original Assignee
Diehl GmbH and Co
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 GmbH and Co filed Critical Diehl GmbH and Co
Publication of EP0323839A2 publication Critical patent/EP0323839A2/en
Publication of EP0323839A3 publication Critical patent/EP0323839A3/en
Application granted granted Critical
Publication of EP0323839B1 publication Critical patent/EP0323839B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42BEXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B10/00Means 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
    • F42B10/32Range-reducing or range-increasing arrangements; Fall-retarding means
    • F42B10/48Range-reducing, destabilising or braking arrangements, e.g. impact-braking arrangements; Fall-retarding means, e.g. balloons, rockets for braking or fall-retarding
    • F42B10/56Range-reducing, destabilising or braking arrangements, e.g. impact-braking arrangements; Fall-retarding means, e.g. balloons, rockets for braking or fall-retarding of parachute or paraglider type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42BEXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00Blasting cartridges, i.e. case and explosive
    • F42B3/006Explosive bolts; Explosive actuators

Definitions

  • the invention relates to a discharge body according to the preamble of claim 1.
  • Such a discharge body is known from EP 0 247 227 A1 as a self-disassembling aircraft bomb for pyrotechnic smoke or flame effects. After being dropped, it breaks down into four parts, of which the two middle ones are the pyrotechnically effective containers that drop down over the target area when parachuted. The parachute of the front container is packed in the bomb ogive directly in front of it.
  • the invention relates in particular to a launching body in the form of a parachute-controlled submunition descending into the target area, as is known, for example, from US Pat. No. 4,587,902.
  • a parachute cassette behind the submunition active part appropriate.
  • a time control device opens the parachute storage space in the cassette, for example by lifting it off the rear wall of the submunition active part, in order to pull the parachute out of its storage bag for deployment.
  • the proper function of separating the parachute cassette from the rear wall of the active body causes the timing device required for this, with its locking or release mechanism, to be arranged axially symmetrically and, for reasons of space saving, preferably axially and also the necessary play for the Release movement process in the engagement from the active part to the parachute cassette guaranteed.
  • a constructive edging of the cassette periphery with fixation to the active part periphery is required, which, however, requires relatively large volumes to accommodate due to transverse forces occurring during the shipment and for the accommodation of axial clamping elements.
  • the invention has for its object to equip a discharge body of the generic type in such a way that the dimensions of the construction elements in the periphery of the parachute cartridge can be reduced, thereby saving on the weight and increasing the storage space available for the parachute for a given caliber can.
  • This object is essentially achieved in that the connection between the parachute cassette and the active part takes place according to the characterizing part of claim 1.
  • the parachute cartridge is fixed axially and radially on the active part in the center of its rear wall, so that here the mutual position fixing takes place and in the area of the cassette periphery no more forces have to be absorbed and transmitted to the active part; with the desirable consequence that the cassette can be made thin-walled and therefore light and with a large internal storage space in relation to the diameter and clear kinematic conditions during the separation process of the cassette from the active part can be ensured by simple central axial guidance measures.
  • a bolt with a predetermined breaking point running in the plane of the parting line, which can be opened pyrotechnically, is expediently used as the snap-on clamping element between the cassette and the rear part of the active part.
  • the pyrotechnic separating screws put on the market by Dynamit Nobel AG for special constructive tasks in the field of test technology.
  • FIG. 1 The only figure in the drawing shows an axial longitudinal sectional view of the pyrotechnically detachable axial assembly of a rotating parachute cartridge in the rear region of a launching body, in particular a search fuse submunition body.
  • the sketched submunition discharge body 11 has an electromechanical-electronic safety and ignition device 15 between its rear wall 12 and a rear dam 13 for its active charge 14 and coaxially with a parachute cassette 16 behind the rear wall 12.
  • a rotary parachute (not shown) and a brake parachute (not shown) are folded in in front of a partition 17 and behind the partition 17, with a rear closure by a cassette cover 18.
  • Via positive locking of the cassette partition 17 between a circumferential bearing flange 19 on the inner surface the cassette wall 20 and a snap ring 21 inserted behind it are axially secured and radially centered between the cassette 16 and the partition 17.
  • the partition 17 in turn is guided radially by means of a sleeve 22 projecting forward at a rear bulge 23 of the rear wall 12 and fixed forward.
  • the rear fixing of the partition 17 (and thus the cassette 16) on the rear wall 12 (and thus on the active part 24) is carried out by means of a radially centering and axially tensioning connecting element 25 which is fixed centrally in the rear wall 12.
  • This essentially has the form of a bolt 26, which is executed in the plane of the parting line 27 with an axial predetermined breaking point 28.
  • This can be blown open by means of a pyrotechnic ignition charge 29, which can be initiated electrically via an ignition pill 30 inside the connecting bolt 26, controlled via a cable connection 31 from the ignition device 15.
  • the initiation leads to an axial breakage of the bolt 26 in the plane of the parting line 27 by flanging the bolt outer surface into the space reserved for it in a groove 32 running in the plane of the parting line 27.
  • reaction gas pressure released when the clamping bolt 26 is broken open leads to an overpressure in the region of the groove 32 and thus to a telescopic engagement of the bulge 23 and the sleeve 22 in one another, to an axially guided lifting of the parachute cassette 16 from the active part 24 with axial separation of the two Parts of the bolt 26 from each other in the plane of the parting line 27.
  • the pyrotechnically separable clamping bolt 26 can receive its axial clamping between the active part rear wall 12 and the cassette partition wall 17 by means of positive locking elements (cross pins, spring washer) or positive locking in the manner of rivet heads.
  • positive locking elements cross pins, spring washer
  • the simplest is a design as a short threaded bolt 26 which is screwed coaxially into at least one of the parts to be clamped (rear wall 12, partition 17) and, for example, axially abuts against the other part by means of a screw head 33.
  • a threaded bolt 26 is provided, the screw head 33 of which lies in a recess 34 in front of the rear wall bulge 23, so that the housing of the ignition device 15 is supported against the active body rear wall 12 over a large area.
  • the thread 35 can engage directly in the partition sleeve 22; or as shown in a nut in the form of a flange bushing 36 inserted into the sleeve 22 at the rear with a rear inner profile 37 for attaching a tool for applying a counter-torque when the separating bolt 26 is screwed in.
  • the front end of the bushing 36 is dimensioned in cross section so that it is together with the adjacent rear end of the rear wall bulge 23 towards the separating bolt 26 in the plane of the separating joint 27, the circumferential groove 32 results; while on the other hand between the flange bushing 36 and the circumferential end region of the rear wall bulge 23 coaxially engages the front end of the partition wall sleeve 22 in order to promote the axial guiding function when lifting off in the parting line 27 and to form a labyrinth seal against the transfer of the primer reaction gases into the swirl umbrella storage space 38.
  • a tractive force (fluid dynamically or structurally induced) behind the parachute cartridge 16 causes its rear cover 18 to be lifted off and thus a brake parachute attached to it is pulled out of the brake parachute storage space 39 behind the cassette partition 17.
  • an ignition sensor 40 for example a stylus, which is moved spring-loaded into its switch-on position when released from the carrier
  • the ignition charge 29 is initiated, that is, the clamping bolt 26 is blown up by the pyrotechnic reaction gas pressure while initiating the axial separating movement.
  • the functional unit consisting of the cassette partition 17 and the positively connected cassette wall 20, which has already been slightly raised by the reaction gas pressure, is now completely lifted from the rear wall 12 and thus from the ejector body active part 24 by the rear pulling force of the brake screen, while unfolding the on the cassette partition 17 attached and fixed to the rear part 12 of the active part (not taken into account in the drawing). Swirl parachute to ensure a uniform rotary movement when braking further descent of the discharge body 11 into its target area.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Automotive Seat Belt Assembly (AREA)
  • Filters And Equalizers (AREA)

Description

Die Erfindung betrifft einen Abwurfkörper gemäß dem Oberbegriff des Anspruches 1.The invention relates to a discharge body according to the preamble of claim 1.

Ein solcher Abwurfkörper ist aus der EP 0 247 227 A1 als sich selbst zerlegende Flugzeugbombe für pyrotechnische Rauch- oder Flammwirkung bekannt. Nach dem Abwurf zerlegt sie sich in vier Teile, von denen die beiden mittleren die pyrotechnisch wirksamen Behälter sind, die fallschirmgebremst über dem Zielgebiet niedergehen. Der Fallschirm des vorderen Behälters ist in der unmittelbar davor gelegenen Bomben-Ogive verpackt. Diese wird unter Freigabe des Fallschirmes vom Behälter getrennt, indem ein Kolben durch den Reaktionsgasdruck von Brandsätzen in die Ogive hinein verlagert wird, wobei die Brandsätze über ein Flammrohr geringfügig zeitversetzt gegenüber dem Freigeben des rückwärtigen Behälters und seines Fallschirmes aus dem davon abgehobenen Heckteil der Bombe initiiert werden und zugleich den pyrotechnischen Wirksatz in diesem vorderen Behälter zünden.Such a discharge body is known from EP 0 247 227 A1 as a self-disassembling aircraft bomb for pyrotechnic smoke or flame effects. After being dropped, it breaks down into four parts, of which the two middle ones are the pyrotechnically effective containers that drop down over the target area when parachuted. The parachute of the front container is packed in the bomb ogive directly in front of it. This is separated from the container with the release of the parachute by a piston being displaced into the ogive by the reaction gas pressure of incendiary devices, the incendiary devices being initiated via a flame tube at a slightly delayed time compared to the release of the rear container and its parachute from the rear part of the bomb which is lifted off and ignite the pyrotechnic active ingredient in this front container.

Die Erfindung betrifft aber insbesondere einen Abwurfkörper in Form einer fallschirmgebremst ins Zielgebiet absteigenden Suchzünder-Submunition, wie sie etwa aus der US-PS 4,587,902 bekannt ist. Bei jener ist, um erst eine gewisse Zeit nach der Abwurf-Freigabe des Körpers aus einem Verbringungs-Träger einen Drall-Fallschirm zur Entfaltung freizugeben, eine Fallschirmkassette hinter dem Submunitions-Wirkteil angebracht. Eine Zeitsteuereinrichtung öffnet den Fallschirm-Stauraum in der Kassette beispielsweise durch Abheben von der Rückwand des Submunitions-Wirkteils, um damit den Fallschirm aus seinem Stausack zur Entfaltung herauszuziehen. Die ordnungsgemäße Funktion des Trennens der Fallschirmkassette von der Wirkkörper-Heckwand bewirkt allerdings, daß die dafür erforderliche Zeitsteuereinrichtung mit ihrer Arretier- bzw. Freigabe-Mechanik axial-symmetrisch und aus Gründen der Raumer-sparnis vorzugsweise axial angeordnet ist und auch das notwendige Spiel für den Freigabe-Bewegungsvorgang im Eingriff vom Wirkteil zur Fallschirmkassette gewährleistet. Um dennoch einen beschleunigungs- und vibrationsfesten, insbesondere aus einem Waffenrohr verschießbaren Aufbau für die Funktionsteile zwischen Wirkteil und Fallschirmkassette zu erzielen, ist eine konstruktive Einfassung der Kassetten-Peripherie mit Fixierung an der Wirkteil-Peripherie erforderlich, was allerdings relativ große Volumina für die Aufnahme von bei der Verbringung auftretenden Querkräften und für die Unterbringung von Axial-Spannelementen bedingt.However, the invention relates in particular to a launching body in the form of a parachute-controlled submunition descending into the target area, as is known, for example, from US Pat. No. 4,587,902. In this case, in order to release a swirl parachute for deployment only a certain time after the release of the body from a movement carrier, a parachute cassette behind the submunition active part appropriate. A time control device opens the parachute storage space in the cassette, for example by lifting it off the rear wall of the submunition active part, in order to pull the parachute out of its storage bag for deployment. However, the proper function of separating the parachute cassette from the rear wall of the active body causes the timing device required for this, with its locking or release mechanism, to be arranged axially symmetrically and, for reasons of space saving, preferably axially and also the necessary play for the Release movement process in the engagement from the active part to the parachute cassette guaranteed. In order to achieve an acceleration and vibration-resistant, especially from a gun barrel lockable structure for the functional parts between the active part and the parachute cassette, a constructive edging of the cassette periphery with fixation to the active part periphery is required, which, however, requires relatively large volumes to accommodate due to transverse forces occurring during the shipment and for the accommodation of axial clamping elements.

In Erkenntnis dieser Gegebenheiten liegt der Erfindung die Aufgabe zugrunde, einen Abwurfkörper gattungsgemäßer Art derart auszustatten, daß die Bemessungen der Konstruktionselemente in der Peripherie der Fallschirmkassette reduziert werden können, um dadurch an Verbringungsgewicht zu sparen und bei gegebenem Kaliber den für den Fallschirm verfügbaren Stauraum vergrößern zu können. Diese Aufgabe wird erfindungsgemäß im wesentlichen dadurch gelöst, daß die Verbindung zwischen der Fallschirmkassette und dem Wirkteil gemäß dem Kennzeichnungsteil des Anspruches 1 erfolgt.In recognition of these circumstances, the invention has for its object to equip a discharge body of the generic type in such a way that the dimensions of the construction elements in the periphery of the parachute cartridge can be reduced, thereby saving on the weight and increasing the storage space available for the parachute for a given caliber can. This object is essentially achieved in that the connection between the parachute cassette and the active part takes place according to the characterizing part of claim 1.

Nach dieser Lösung erfolgt eine axiale und radiale Festlegung der Fallschirmkassette am Wirkteil im Zentrum von dessen Rückwand, so daß hier die gegenseitige Lagefixierung erfolgt und im Bereiche der Kassetten-Peripherie keine Kräfte mehr aufgenommen und zum Wirkteil hin übertragen werden müssen; mit der wünschenswerten Folge, daß die Kassette dünnwandig und dadurch leicht und mit großem inneren Stauraum im Verhältnis zum Durchmesser ausgeführt werden kann und eindeutige kinematische Verhältnisse beim Trennvorgang der Kassette vom Wirkteil durch einfache zentrale Axialführungsmaßnahmen sicherstellbar sind. Als aufsprengbares Spannelement zwischen Kassette und Wirkteil-Rückwand wird zweckmäßigerweise ein Bolzen mit in der Ebene der Trennfuge umlaufender Sollbruchstelle eingesetzt, die pyrotechnisch auftrennbar ist; bevorzugt in der Ausführungsform der von der Firma Dynamit Nobel AG für konstruktive Sonderaufgaben auf dem Gebiete der Versuchstechnik auf den Markt gebrachten pyrotechnischen Trennschrauben.According to this solution, the parachute cartridge is fixed axially and radially on the active part in the center of its rear wall, so that here the mutual position fixing takes place and in the area of the cassette periphery no more forces have to be absorbed and transmitted to the active part; with the desirable consequence that the cassette can be made thin-walled and therefore light and with a large internal storage space in relation to the diameter and clear kinematic conditions during the separation process of the cassette from the active part can be ensured by simple central axial guidance measures. A bolt with a predetermined breaking point running in the plane of the parting line, which can be opened pyrotechnically, is expediently used as the snap-on clamping element between the cassette and the rear part of the active part. preferred in the embodiment of the pyrotechnic separating screws put on the market by Dynamit Nobel AG for special constructive tasks in the field of test technology.

Deren Aufbau unterscheidet sich also wesentlich von pyrotechnisch trennbaren Halterungselementen, wie sie aus der BE-A 442 432 als Pylons für die Halterung von Bomben unter Flugzeugflügeln bekannt sind.Their structure is therefore significantly different from pyrotechnically separable mounting elements, as are known from BE-A 442 432 as pylons for mounting bombs under aircraft wings.

Zusätzliche Alternativen und Weiterbildungen sowie weitere Merkmale und Vorteile der Erfindung ergeben sich aus den weiteren Ansprüchen und aus nachstehender Beschreibung eines in der Zeichnung unter Beschränkung auf das Wesentliche angenähert maßstabsgerecht skizzierten bevorzugten Realisierungsbeispiels zur erfindungsgemäßen Lösung.Additional alternatives and further developments as well as further features and advantages of the invention result from the further claims and from the following description of a preferred implementation example for the solution according to the invention, which is outlined to scale in the drawing while restricting it to the essentials.

Die einzige Figur der Zeichnung zeigt in Axial-Längsschnittdarstellung die pyrotechnisch absprengbare axiale Montage einer Rotationsfallschirm-Kassette im rückwärtigen Bereich eines Abwurfkörper, insbesondere eines Suchzünder-Submunitionskörper.The only figure in the drawing shows an axial longitudinal sectional view of the pyrotechnically detachable axial assembly of a rotating parachute cartridge in the rear region of a launching body, in particular a search fuse submunition body.

Der skizzierte Submunitions-Abwurfkörper 11 weist zwischen seiner Rückwand 12 und einer rückwärtigen Verdämmung 13 für seine Wirkladung 14 eine elektromechanisch-elektronisch Sicherungs- und Zündeinrichtung 15 und koaxial dazu hinter der Rückwand 12 eine Fallschirm-Kassette 16 auf. In diese ist vor einer Trennwand 17 ein Rotationsfallschirm (nicht gezeichnet) und hinter der Trennwand 17 ein Bremsfallschirm (nicht gezeichnet) eingefaltet, mit rückwärtigem Abschluß durch einen Kassettendeckel 18. Über formschlüssige Festlegung der Kassetten-Trennwand 17 zwischen einem umlaufenden Lagerflansch 19 auf der Innenmantelfläche der Kassetten-Wandung 20 und einem dahinter eingesetzten Sprengring 21 ist eine axiale Sicherung und radiale Zentrierung zwischen Kassette 16 und Trennwand 17 gegeben. Die Trennwand 17 ihrerseits ist mittels einer nach vorne vorstehenden Hülse 22 an einer rückwärtigen Ausbuchtung 23 der Rückwand 12 radial geführt und nach vorne festgelegt. Die rückwärtige Festlegung der Trennwand 17 (und damit der Kassette 16) an der Rückwand 12 (und damit am Wirkteil 24) erfolgt mittels eines zentrisch in der Rückwand 12 festgelegten, radial zentrierenden und axial spannenden Verbindungselementes 25. Dieses weist im wesentlichen die Form eines Bolzens 26 auf, der in der Ebene der Trennfuge 27 mit einer Axial-Sollbruchstelle 28 ausgeführt ist. Diese kann mittels eines pyrotechnischen Anzündsatzes 29 aufgesprengt werden, der elektrisch über eine Anzündpille 30 im Innern des Verbindungs-Bolzens 26, gesteuert über eine Kabelverbindung 31 aus der Zündeinrichtung 15, initiierbar ist. Die Initiierung führt zu einem axialen Zerbrechen des Bolzens 26 in der Ebene der Trennfuge 27 unter Ausbördelung der Bolzen-Mantelfläche in den dafür freigehaltenen Raum einer in der Ebene der Trennfuge 27 umlaufenden Kehlnut 32.The sketched submunition discharge body 11 has an electromechanical-electronic safety and ignition device 15 between its rear wall 12 and a rear dam 13 for its active charge 14 and coaxially with a parachute cassette 16 behind the rear wall 12. A rotary parachute (not shown) and a brake parachute (not shown) are folded in in front of a partition 17 and behind the partition 17, with a rear closure by a cassette cover 18. Via positive locking of the cassette partition 17 between a circumferential bearing flange 19 on the inner surface the cassette wall 20 and a snap ring 21 inserted behind it are axially secured and radially centered between the cassette 16 and the partition 17. The partition 17 in turn is guided radially by means of a sleeve 22 projecting forward at a rear bulge 23 of the rear wall 12 and fixed forward. The rear fixing of the partition 17 (and thus the cassette 16) on the rear wall 12 (and thus on the active part 24) is carried out by means of a radially centering and axially tensioning connecting element 25 which is fixed centrally in the rear wall 12. This essentially has the form of a bolt 26, which is executed in the plane of the parting line 27 with an axial predetermined breaking point 28. This can be blown open by means of a pyrotechnic ignition charge 29, which can be initiated electrically via an ignition pill 30 inside the connecting bolt 26, controlled via a cable connection 31 from the ignition device 15. The initiation leads to an axial breakage of the bolt 26 in the plane of the parting line 27 by flanging the bolt outer surface into the space reserved for it in a groove 32 running in the plane of the parting line 27.

Der beim Aufbrechen des Spannbolzens 26 freiwerdende Reaktionsgasdruck führt zu einem Überdruck im Bereiche der Kehlnut 32 und damit zu einem, in Folge teleskopartigen Eingriffes der Ausbuchtung 23 und der Hülse 22 ineinander, zu einem axialgeführten Abheben der Fallschirmkassette 16 vom Wirkteil 24 unter axialem Trennen der beiden Teile des Bolzen 26 voneinander in der Ebene der Trennfuge 27.The reaction gas pressure released when the clamping bolt 26 is broken open leads to an overpressure in the region of the groove 32 and thus to a telescopic engagement of the bulge 23 and the sleeve 22 in one another, to an axially guided lifting of the parachute cassette 16 from the active part 24 with axial separation of the two Parts of the bolt 26 from each other in the plane of the parting line 27.

Der pyrotechnisch trennbare Spannbolzen 26 kann seine axiale Einspannung zwischen der Wirkteil-Rückwand 12 und der Kassetten-Trennwand 17 mittels formschlüssiger Sicherungselemente (Querstifte, Federscheibe) oder formschlüssig nach Art von Nietköpfen erhalten. Montagemäßig am einfachsten ist jedoch eine Ausbildung als kurzer Gewindebolzen 26, der in wenigstens eines der zu verspannenden Teile (Rückwand 12, Trennwand 17) koaxial eingeschraubt ist und beispielsweise gegen das andere Teil mittels eines Schraubenkopfes 33 axial anliegt.The pyrotechnically separable clamping bolt 26 can receive its axial clamping between the active part rear wall 12 and the cassette partition wall 17 by means of positive locking elements (cross pins, spring washer) or positive locking in the manner of rivet heads. In terms of assembly, however, the simplest is a design as a short threaded bolt 26 which is screwed coaxially into at least one of the parts to be clamped (rear wall 12, partition 17) and, for example, axially abuts against the other part by means of a screw head 33.

Beim dargestellten bevorzugten Ausführungsbeispiel ist ein Gewindebolzen 26 vorgesehen, dessen Schraubenkopf 33 in einer Ausnehmung 34 vor der Rückwand-Ausbuchtung 23 liegt, damit das Gehäuse der Zündeinrichtung 15 großflächig-flach gegen die Wirkkörper-Rückwand 12 anliegend abgestützt ist. Das Gewinde 35 kann entgegen der Darstellung unmittelbar in die Trennwandhülse 22 eingreifen; oder wie dargestellt in eine Mutter in Form einer rückwärtig in die Hülse 22 eingesetzten Flanschbuchse 36 mit rückwärtiger Innenprofilierung 37 zum Ansetzen eines Werkzeuges für Aufbringen eines Gegenmomentes beim Einschrauben des Trennbolzens 26. Das vordere Ende der Buchse 36 ist im Querschnitt so dimensioniert, daß sich zusammen mit dem angrenzenden rückwärtigen Ende der Rückwand-Ausbuchtung 23 zum Trennbolzen 26 hin in der Ebene der Trennfuge 27 die umlaufende Kehlnut 32 ergibt; während andererseits zwischen der Flanschbuchse 36 und den vorderen Ende der Trennwand-Hülse 22 der umlaufende Stirnbereich der Rückwand-Ausbuchtung 23 koaxial eingreift, um hier die axiale Führungsfunktion beim Abheben in der Trennfuge 27 zu fördern und eine Labyrinthdichtung gegen Übertritt der Anzündsatz-Reaktionsgase in den Drallschirm-Stauraum 38 auszubilden.In the preferred embodiment shown, a threaded bolt 26 is provided, the screw head 33 of which lies in a recess 34 in front of the rear wall bulge 23, so that the housing of the ignition device 15 is supported against the active body rear wall 12 over a large area. Contrary to the illustration, the thread 35 can engage directly in the partition sleeve 22; or as shown in a nut in the form of a flange bushing 36 inserted into the sleeve 22 at the rear with a rear inner profile 37 for attaching a tool for applying a counter-torque when the separating bolt 26 is screwed in. The front end of the bushing 36 is dimensioned in cross section so that it is together with the adjacent rear end of the rear wall bulge 23 towards the separating bolt 26 in the plane of the separating joint 27, the circumferential groove 32 results; while on the other hand between the flange bushing 36 and the circumferential end region of the rear wall bulge 23 coaxially engages the front end of the partition wall sleeve 22 in order to promote the axial guiding function when lifting off in the parting line 27 and to form a labyrinth seal against the transfer of the primer reaction gases into the swirl umbrella storage space 38.

Beim Ausstoß des Submunitions-Abwurfkörpers 11 aus seinem Träger, etwa einem Verbringungs-Projektil, bewirkt eine (strömungsdynamisch oder konstruktiv hervorgerufene) Zugkraft hinter der Fallschirmkassette 16 das Abheben ihres rückwärtigen Deckels 18 und damit das Herausziehen eines daran festgelegten Bremsfallschirmes aus dem Bremsschirm-Stauraum 39 hinter der Kassetten-Trennwand 17. Zugleich wird von einem Zündsensor 40 (etwa ein Abtaststift, der bei Freigabe aus dem Träger federbelastet in seine Einschaltstellung bewegt wird) eine elektronische Zeitschaltung aktiviert, um nach einer systembedingt gegebenen Bremszeitspanne den Drallschirm-Stauraum 38 zu öffnen. Hierfür wird der Anzündsatz 29 initiiert, also der Spannbolzen 26 unter Einleitung der axialen Trennbewegung durch den pyrotechnischen Reaktionsgasdruck gesprengt. Das gegenseitige Übergreifen von Trennwand-Hülse 22 und Rückwand-Ausbuchtung 23 stellt sicher, daß beim Aufsprengen des Spannbolzens 26 weder thermische noch mechanische Beschädigungen des in den Stauraum 38 eingefalteten Drallfallschirmes über die sich öffnende Trennfuge 27 erfolgen. Noch ehe dieser Eingriff 22-23 geöffnet ist, wird der Reaktionsgas-Überdruck mittels dünner Ausgleichskanäle 41 durch die Trennwand 17 hindurch in den rückwärtig geöffneten Raum 39 abgebaut, der wegen bereits herausgezogenen Bremsfallschirmes frei ist; so daß auch bei Auseinandergleiten des teleskopischen Eingriffes 22-23 dann keine heißen Reaktionsgase des Anzündsatzes 29 mehr zu Beschädigungen im Drallschirm-Stauraum 38 führen können.When the submunition launching body 11 is ejected from its carrier, for example a movement projectile, a tractive force (fluid dynamically or structurally induced) behind the parachute cartridge 16 causes its rear cover 18 to be lifted off and thus a brake parachute attached to it is pulled out of the brake parachute storage space 39 behind the cassette partition 17. At the same time, an ignition sensor 40 (for example a stylus, which is moved spring-loaded into its switch-on position when released from the carrier) activates an electronic time switch in order to open the swirl-screen storage space 38 after a system-specific braking period. For this, the ignition charge 29 is initiated, that is, the clamping bolt 26 is blown up by the pyrotechnic reaction gas pressure while initiating the axial separating movement. The mutual overlap of the partition sleeve 22 and the rear wall bulge 23 ensures that when the clamping bolt 26 is opened, neither thermal nor mechanical damage to the swirl parachute folded into the storage space 38 occurs via the opening joint 27. Before this intervention 22-23 is opened, the reaction gas overpressure is reduced by means of thin equalization channels 41 through the partition wall 17 into the space 39 which is open at the rear and which is free because the brake parachute has already been pulled out; so that even when the telescopic engagement 22-23 slides apart, no hot reaction gases from the ignition charge 29 can lead to damage in the swirl-screen storage space 38.

Die vom Reaktionsgasdruck bereits etwas angehobene Funktionseinheit aus Kassetten-Trennwand 17 und damit formschlüssig verbundener Kassetten-Wandung 20 wird nun durch die rückwärtige Zugkrafteinwirkung des Bremsschirmes ganz von der Rückwand 12 und damit vom Abwurfkörper-Wirkteil 24 abgehoben, unter Ausfalten des an der Kassetten-Trennwand 17 befestigten und an der Wirkteil-Rückwand 12 festgelegten (in der Zeichnung nicht berücksichtigt) Drallfallschirmes zur Sicherstellung einer gleichmäßigen Drehbewegung beim gebremsten weiteren Abstieg des Abwurfkörpers 11 in sein Zielgebiet.The functional unit consisting of the cassette partition 17 and the positively connected cassette wall 20, which has already been slightly raised by the reaction gas pressure, is now completely lifted from the rear wall 12 and thus from the ejector body active part 24 by the rear pulling force of the brake screen, while unfolding the on the cassette partition 17 attached and fixed to the rear part 12 of the active part (not taken into account in the drawing). Swirl parachute to ensure a uniform rotary movement when braking further descent of the discharge body 11 into its target area.

Claims (10)

  1. A jettisonable body (11) having an axially braced parachute stowage chamber (38) which is kept closed by means of a central connection element (25) which is pyrotechnically separable, characterised in that the connection element (25) is arranged as a clamping bolt (26) between the rear wall (12) of an active part (24) and the rear wall (17) of a parachute cassette (16) arranged coaxially therebehind, is surrounded in this respect by coaxially intermeshing guidance parts on the rear walls (12, 17), and is equipped in the interior in the plane of the parting line (27) with a firing composition (29) inside an encircling predetermined breaking point (28), in the plane of which outside the bolt (26) in the guidance parts a throat groove (32) encircles.
  2. A jettisonable body according to Claim 1, characterised in that in the plane of the parting line (27) axially telescopically intermeshing guidance parts (sleeve 22, bulge 23) are formed on the cassette (16) or respectively on the rear wall (12).
  3. A jettisonable body according to Claim 1 or 2, characterised in that the guidance parts are designed as a labyrinth seal (22-23).
  4. A jettisonable body according to any one of the preceding claims, characterised in that the connection element (25) is designed as a pyrotechnically separable screw bolt (26) having an axially short thread (35) behind the separation firing composition (29).
  5. A jettisonable body according to Claim 4, characterised in that the threaded bolt (26) on the one hand is equipped with a bolthead (33) and on the other hand is screwed into a flanged bush (36).
  6. A jettisonable body according to Claim 5, characterised in that the flanged bush (36) is braced axially against a rearward bulge (23) of the rear wall (12) of the active part.
  7. A jettisonable body according to any one of the preceding claims, characterised in that the stowage chamber (38) in the region of the parting line (27) is divided off relative to the pyrotechnically separable connection element (25) by a telescopelike seal with a sleeve (22).
  8. A jettisonable body according to Claim 7, characterised in that the space sealed off relative to the stowage chamber (38) is connected in the vicinity of the connection element (25) by way of equalization ducts (41) for the reduction of the pyrotechnical reaction gas pressure to the free space behind the parachute cassette (16).
  9. A jettisonable body according to any one of the preceding claims, characterised in that the cassette (16) is equipped with a wall (17) which rearwardly seals off the parachute stowage chamber (38) and which has in the centre a sleeve (22) which encircles coaxially with regard to the connection element (25) and by way of which the wall (17) is braced axially against a bulge in the rear wall (12) of the active body.
  10. A jettisonable body according to Claim 9, characterised in that the head (33) of a pyrotechnically activatable separation bolt (26) is arranged in a central recess (34) in front of the bulge (23) of the rear wall.
EP89100125A 1988-01-08 1989-01-05 Air-drop body with a parachute Expired - Lifetime EP0323839B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3800330A DE3800330A1 (en) 1988-01-08 1988-01-08 DROP BODY WITH PARACHUTE
DE3800330 1988-01-08

Publications (3)

Publication Number Publication Date
EP0323839A2 EP0323839A2 (en) 1989-07-12
EP0323839A3 EP0323839A3 (en) 1990-10-31
EP0323839B1 true EP0323839B1 (en) 1993-12-01

Family

ID=6344957

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89100125A Expired - Lifetime EP0323839B1 (en) 1988-01-08 1989-01-05 Air-drop body with a parachute

Country Status (4)

Country Link
US (1) US4953813A (en)
EP (1) EP0323839B1 (en)
DE (2) DE3800330A1 (en)
NO (1) NO167450C (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3937147C2 (en) * 1989-11-08 1998-07-09 Diehl Stiftung & Co Brake parachute pack
DE3937762C2 (en) * 1989-11-14 1993-11-25 Diehl Gmbh & Co Artillery shell submunition
DE4124960C2 (en) * 1991-07-27 1995-11-16 Rheinmetall Ind Gmbh Submunition with a rotating parachute
DE19630796C2 (en) * 1996-07-31 1998-07-09 Diehl Stiftung & Co Transport device for large-caliber submunitions
EP0794405B1 (en) * 1996-03-08 2001-09-05 Diehl Stiftung & Co. Method and device for dispersing a large caliber payload above a target
US5887825A (en) * 1996-10-01 1999-03-30 Mcdonnell Douglas Corporation Multi-stage parachute release
DE102007039011A1 (en) 2007-08-17 2009-02-19 Rheinmetall Waffe Munition Gmbh Device with two components, which are detachably connected to each other via a separating screw
SE541612C2 (en) * 2016-09-15 2019-11-12 Bae Systems Bofors Ab Modifiable divisible projectile and method for modifying a projectile

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2967668A (en) * 1959-02-05 1961-01-10 Edward O Norris Centrifugal spraying device

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE442432A (en) *
FR441995A (en) * 1912-04-01 1912-08-21 Georges Delphin Charles Desire Parachute projectile for firing in aerial vehicles
FR992931A (en) * 1944-10-04 1951-10-24 Sival Soc Improvements in aerial bombardment devices and processes
GB651935A (en) * 1947-11-07 1951-04-11 Bofors Ab Improvements in and relating to flares
US2967686A (en) * 1949-11-15 1961-01-10 Gordon L Fogal Delayed opening parachute pack
US2650127A (en) * 1951-04-17 1953-08-25 Norris W Carlson Parachute load release
US3087697A (en) * 1961-09-20 1963-04-30 Jr James H Potts Parachute pack and pack opener
US3817179A (en) * 1966-07-21 1974-06-18 Us Navy Parachute pack with release mechanism
US3442474A (en) * 1967-09-01 1969-05-06 Us Army Pyrotechnic/mechanical release device
DE1775463A1 (en) * 1968-08-14 1971-07-15 Comet Appbau Gmbh Quickly separable connecting element
US3730099A (en) * 1970-12-17 1973-05-01 Us Navy Controlled descent system
US3749017A (en) * 1971-12-07 1973-07-31 Us Navy Parachute retarding tail assembly for bomb
IL39741A (en) * 1972-06-22 1977-01-31 Israel State Illuminating rocket propelled projectiles equipped with parachute
DE2644127C3 (en) * 1976-09-30 1981-09-17 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Carrying and dropping device for loads on carrier vehicles
DE3326876C2 (en) * 1983-07-26 1986-04-10 Diehl GmbH & Co, 8500 Nürnberg Submunitions with target detection device
US4651648A (en) * 1986-04-01 1987-03-24 The State Of Israel, Ministry Of Defence, Israel Military Industries Pyrotechnic aircraft carried bomb

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2967668A (en) * 1959-02-05 1961-01-10 Edward O Norris Centrifugal spraying device

Also Published As

Publication number Publication date
NO167450B (en) 1991-07-29
US4953813A (en) 1990-09-04
DE3800330A1 (en) 1989-07-20
DE58906266D1 (en) 1994-01-13
EP0323839A2 (en) 1989-07-12
NO890043L (en) 1989-07-10
NO167450C (en) 1991-11-06
NO890043D0 (en) 1989-01-05
EP0323839A3 (en) 1990-10-31

Similar Documents

Publication Publication Date Title
EP0794405B1 (en) Method and device for dispersing a large caliber payload above a target
EP0364670A2 (en) Grenade
DE3608107C1 (en) Carrier projectile for submunition
DE4123649C2 (en) Ejection device
DE3048617A1 (en) COMBAT HEAD WITH SECONDARY BODIES AS A PAYLOAD
EP0323839B1 (en) Air-drop body with a parachute
DE69120954T2 (en) DEVICE FOR FIRING A BULLET
EP1762815B1 (en) Munition with seeking fuze
EP0609565A1 (en) Two stage rocket whereby the second stage is decelerated by a parachute prior to ignition
DE2227104A1 (en) FLOOR OR ROCKET WITH OPENING TAIL
DE3918005C2 (en)
DE1703557A1 (en) Projectile with a payload to be released at a certain point in the flight path
DE3715085C2 (en) Missile projectile
EP0775287B1 (en) Smoke projectile
DE3701709C1 (en) Missile with parachute
DE2638920A1 (en) Spreader for radiation reflecting or emitting material - has central tube with holes, connected to compressed gas which disperses material
DE3705078C1 (en) Bullet with brake parachute
WO2020260009A1 (en) Projectile
DE19944379A1 (en) Cartridge, comprises a sleeve with a front guide and a rear guide, rigidly fixed fins, a cover and at least one base opening.
DE10162136B4 (en) Missile to be fired from a tube with an over-caliber tail unit
EP3637039B1 (en) Carrier projectile for a gun
DE10039988B4 (en) Ejector for ejecting submunitions from a projectile
DE4141082C2 (en) Swirl-stabilized practice floor with a shorter range
DE1428646C (en) Rocket for transporting a payload to great heights and then ejecting the payload
EP3017271B1 (en) Submunition, in particular luminous munition, that can be discharged from a spin-stabilized carrier projectile

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): CH DE FR GB IT LI SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): CH DE FR GB IT LI SE

17P Request for examination filed

Effective date: 19900924

17Q First examination report despatched

Effective date: 19920505

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB IT LI SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19931201

Ref country code: GB

Effective date: 19931201

REF Corresponds to:

Ref document number: 58906266

Country of ref document: DE

Date of ref document: 19940113

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19940131

Ref country code: CH

Effective date: 19940131

ET Fr: translation filed
GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 19931201

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
EAL Se: european patent in force in sweden

Ref document number: 89100125.7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20041231

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20050126

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20050322

Year of fee payment: 17

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060106

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060801

EUG Se: european patent has lapsed
REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20060929