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EP0691519B1 - Device for non-lethal combat against aircraft - Google Patents

Device for non-lethal combat against aircraft Download PDF

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Publication number
EP0691519B1
EP0691519B1 EP95106519A EP95106519A EP0691519B1 EP 0691519 B1 EP0691519 B1 EP 0691519B1 EP 95106519 A EP95106519 A EP 95106519A EP 95106519 A EP95106519 A EP 95106519A EP 0691519 B1 EP0691519 B1 EP 0691519B1
Authority
EP
European Patent Office
Prior art keywords
interference elements
elements
interference
spacesaving
flying object
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
EP95106519A
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German (de)
French (fr)
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EP0691519A1 (en
Inventor
Ulrich Dipl. Ing. Rieger
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Airbus Defence and Space GmbH
Original Assignee
Daimler Benz Aerospace AG
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Publication of EP0691519A1 publication Critical patent/EP0691519A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
    • F42B12/36—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information
    • F42B12/56—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information for dispensing discrete solid bodies
    • F42B12/58—Cluster or cargo ammunition, i.e. projectiles containing one or more submissiles
    • F42B12/66—Chain-shot, i.e. the submissiles being interconnected by chains or the like

Definitions

  • the invention relates to a method for combating aircraft according to the preamble of claim 1.
  • US Pat. No. 5,249,527 discloses disposable flexible, inflatable and shaping IR active bodies, which, however, are not able to force an aircraft to land.
  • DE 37 22 420 A1 discloses a projectile for combating a helicopter, which is shot roughly in the direction of the aircraft and is intended to enclose it with a net and cause it to crash.
  • an interception device for flying objects in which activatable, aerodynamic resistance bodies are incorporated, which completely or partially enclose the flying object and after a certain time destroy themselves by an integrated device.
  • this device is relatively complex, in particular due to the integrated self-destruct device.
  • CH A 210 356 which serves as the basis for the preamble of claim 1, a projectile for air defense has become known, which has tightly wound steel tape reels in its projectile sleeve, which roll up after being released by their tension and as an obstacle to the missile oppose.
  • This proposed solution is not suitable for an absolutely non-lethal combat, because the size of the steel belts means that the risk of the aircraft being combated falling completely, for example by paralyzing the control surfaces, etc.
  • the present invention has for its object to provide an active agent of the type mentioned, which is able to force unauthorized aircraft to turn or reliably land without thereby endangering the life of the occupants.
  • the first phase of the non-lethal combat of aircraft FG of all types and sizes provides by means of a target-seeking or self-steering and with a distance or proximity fuse missile 11, which is filled with interference bodies 10, to bring them close to the aircraft to be forced to land FG and to cause the missile 11 to explode such that the aircraft FG in question is surrounded by a dense cloud of interfering bodies 10.
  • the interfering bodies 10 In order to enable the aircraft FG to make a perfect, unrestricted landing, the interfering bodies 10 must be designed in such a way that their interference on landing approaches is or is reduced to such an extent that the landing can be carried out with absolute certainty. To a large extent, this will be achievable simply by reducing the cruising speed to the landing speed, since a large part of the interfering bodies 10 will fall off by themselves, for example.
  • the shape, design and size of the individual interfering bodies 10 can be produced in a variety of ways. They should have a length of 5 to about 20 cm and a thickness of a few tenths of a millimeter up to about 2 to 3 centimeters. Different embodiments are illustrated in FIGS. 2 to 4 of the drawing.
  • the embodiment of FIG. 2 consists of resilient material which is forced into a flat shape with the application of force during the so-called packing process. After the emission - well in the floating state - the interfering bodies 10 take on a clearly spatially extended shape in order to adapt to the contour of the aerodynamic surfaces 12 and to get caught. it is - as shown in FIG. 2 - a narrow, resilient steel strip is twisted in its longitudinal direction and individual partial areas are spread apart.
  • the interfering bodies 10 consist of a string 16 interconnected chains of small, essentially flat bodies made of metal or plastic, which are designed so that they face transversely to the flow during the flow, for example as a cone or appropriately attached disks, polygonal plates Etc..
  • each sleeve 17 contains an inflating means 18, 19 which is liquid 18 under somewhat increased pressure and is gaseous 19 under atmospheric or dynamic pressure (the so-called butane lighter principle). These interfering active bodies 10 are held under increased pressure for transport.
  • the interfering active bodies 10 consist of foam and are only generated when they are deployed.
  • a certain storage supply of foam-forming material is to be transported here, together with a generator, for example a strand-forming mixing and chopping device to form the interfering bodies 10.
  • a generator for example a strand-forming mixing and chopping device to form the interfering bodies 10.
  • These are preferably elongated, but also annular, chain-like with or without barbs, noses or friction surfaces, etc.
  • the various interfering bodies 10 are designed so that they take on a flat shape again after a certain time or abson. disintegrate. This ensures that the interference effect is at least so reduces that a safe, largely optimal landing is guaranteed.
  • the interfering active bodies 10 assume a flat shape or disintegrate again due to external radiation. Examples of this are active bodies which consist partially or entirely of a material which decomposes when irradiated with laser light, microwaves, etc.
  • This embodiment has the advantage that the impairment of the aircraft can be removed immediately if it can be seen that it is following the instructions.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Vibration Dampers (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Details Of Aerials (AREA)

Description

Die Erfindung bezieht sich auf ein Verfahren zur Bekämpfung von Fluggeräten gemäß dem Oberbegriff des Anspruches 1.The invention relates to a method for combating aircraft according to the preamble of claim 1.

Die letzten Jahre haben gezeigt, daß es immer wieder vorkommt, daß Flugverfügungen und Verbote nicht eingehalten und beachtet werden und Hoheitsmächte nicht in der Lage sind, um derartige Verbote gewissermaßen "mit friedlichen Mitteln" durchzusetzen. Aufforderungen die durch Funk oder sonstige Signale dem Flugzeugführer übermittelt werden, werden von ihm nicht beachtet und eine letale Bekämpfung ist aus humanitären Gründen nicht geboten, wenngleich in der Vergangenheit eine Reihe von regelrechten Abschüssen bekannt geworden sind, wie der Jumboabschuß in Kamtschatka, der Airbusund der Hubschrauberabschuß im Irak oder die zahlreichen Flugübertretungen in Jugoslawien.The past few years have shown that it is repeatedly the case that flight orders and bans are not observed and observed, and that sovereign powers are unable to enforce such bans "by peaceful means", so to speak. Requests that are sent to the pilot by radio or other signals are ignored by him and no lethal combat is required for humanitarian reasons, although in the past a number of regular killings have become known, such as the Jumbo launch in Kamchatka, the Airbus and the Helicopter launch in Iraq or the numerous flight violations in Yugoslavia.

Der Stand der Technik kennt zur Zeit keine sicheren Mittel, um unautorisiert fliegende Fluggeräte zur Landung zu zwingen, ohne dabei das Leben des Piloten und unschuldiger Passagiere zu gefährden. Aus dem letzten Weltkrieg ist es bekannt, daß sich Flugzeuge durch Abwurf einer Menge von Stanniolstreifen und ähnlicher Störkörper gegen eine Radarortung soweit schützen konnten, daß genaue Ortungsmessungen nicht möglich, zumindest jedoch stark gestört waren.The state of the art currently has no safe means of forcing unauthorized flying aircraft to land without endangering the lives of the pilot and innocent passengers. From the last world war it is known that airplanes were able to protect themselves against radar detection by dropping a lot of tinfoil strips and similar interfering bodies to the extent that precise location measurements were not possible, or at least were severely disturbed.

Aus der US 5,249,527 sind abwerfbare flexible, aufblasbare und sich formende IR-Wirkkörper bekannt, die jedoch nicht in der Lage sind, ein Fluggerät zur Landung zu zwingen.US Pat. No. 5,249,527 discloses disposable flexible, inflatable and shaping IR active bodies, which, however, are not able to force an aircraft to land.

Aus der DE 34 37 594 A1 ist ein Hubschrauberabwehrgeschoß bekannt, das aus einem durch einen Draht verbundenen ungleichen Massenpaar besteht, welches sich in einem Rotorblatt verfangen soll. Eine nichtletale Bekämpfung von Fluggeräten ist in diesem Fall höchstens zufällig möglich, vorwiegend wird es jedoch zu einem Absturz des Fluggerätes kommen.From DE 34 37 594 A1 a helicopter defense projectile is known which consists of an unequal pair of masses connected by a wire, which is supposed to get caught in a rotor blade. In this case, non-lethal combat of aircraft is at most possible by chance, but the aircraft will mostly crash.

Aus der DE 37 22 420 A1 ist ein Geschoß zur Bekämpfung eines Hubschraubers bekannt, das in Richtung des Fluggerätes grob ausgerichtet abgeschossen wird und dieses mit einem Netz umschließen und zum Absturz bringen soll.DE 37 22 420 A1 discloses a projectile for combating a helicopter, which is shot roughly in the direction of the aircraft and is intended to enclose it with a net and cause it to crash.

Aus der DE 37 35 426 A1 ist ebenfalls ein Geschoß mit einem entfaltbaren Element bekannt, das Lufträume für Flugkörper sperren soll. Alle diese bekannten Einrichtungen schließen jedoch eine letale Auswirkung der Bekämpfung nicht aus, im Gegenteil sind sie fast auschließlich für eine solche konzipiert.DE 37 35 426 A1 also discloses a projectile with a deployable element which is intended to block air spaces for missiles. However, all these known devices do not rule out a lethal effect of the control, on the contrary, they are almost exclusively designed for such.

Aus der DE 44 09 424 der Anmelderin ist jedoch eine Abfangvorrichtung für Flugobjekte bekannt, bei der aktivierbare, aerodynamische Widerstandskörper eingearbeitet sind, die das Flugobjekt ganz oder teiltweise umschließen und nach einer bestimmten Zeit sich selbst durch eine integrierte Vorrichtung zerstören. Allerdings ist diese Vorrichtung relativ aufwendig, insbesondere durch die integrierte Selbstzerstöreinrichtung.From DE 44 09 424 of the applicant, however, an interception device for flying objects is known, in which activatable, aerodynamic resistance bodies are incorporated, which completely or partially enclose the flying object and after a certain time destroy themselves by an integrated device. However, this device is relatively complex, in particular due to the integrated self-destruct device.

Durch die CH A 210 356, die als Grundlage für den Oberbegriff des Anspruchs 1 dient, ist ein Geschoß für die Flugabwehr bekannt geworden, das in seiner Geschoßhülse eng gewickelte Stahlbandrollen aufweist, die nach der Freigabe durch ihre Spannkraft sich aufrollen und als Hindernis dem Flugkörper entgegenstehen. Für eine absolut nichtletale Bekämpfung ist diese vorgeschlagene Lösung nicht geeignet, denn durch die Größe der Stahlbänder ist die Gefahr eines totalen Absturzes des bekämpften Flugzeugs zu groß, beispielsweise durch Lahmlegung der Steuerungsflächen etc.By CH A 210 356, which serves as the basis for the preamble of claim 1, a projectile for air defense has become known, which has tightly wound steel tape reels in its projectile sleeve, which roll up after being released by their tension and as an obstacle to the missile oppose. This proposed solution is not suitable for an absolutely non-lethal combat, because the size of the steel belts means that the risk of the aircraft being combated falling completely, for example by paralyzing the control surfaces, etc.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Wirkmittel der eingangs genannten Art zu schaffen, das in der Lage, ist unautorisierte Fluggeräte zum Abdrehen oder zuverlässig zur Landung zu zwingen, ohne daß dabei das Leben der Insassen gefährdet wird.The present invention has for its object to provide an active agent of the type mentioned, which is able to force unauthorized aircraft to turn or reliably land without thereby endangering the life of the occupants.

Diese Aufgabe wird in überraschend einfacher Weise durch die im Anspruch 1 aufgezeigten Maßnahmen gelöst. In den Unteransprüchen sind Weiterbildungen und Ausgestaltungen angegeben, und in der nachfolgenden Beschreibung sind Ausführungsbeispiele erläutert. Diese Erläuterungen werden durch die Figuren der Zeichnung ergänzt. Es zeigen:

Fig. 1
ein Schemabild der Einzelphasen bezüglich der Ausbringung und Wirkung des vorgeschlagenen Systems vor Passieren und nach dem Passieren der Wirkkörperwolke,
Fig. 2
ein Schemabild einer Ausführungsform der vorgeschlagenen Wirkkörper aus federndem Material in der Pack- und in der Schwebekonfiguration in einer Seitenansicht,
Fig. 3
ein Schemabild einer weiteren Ausführungsform der Störwirkkörper, die sich quer zur Anströmrichtung stellen, in der Pack- und in der Schwebekonfiguration sowie nach der Anlage an der aerodynamischen Fläche,
Fig. 4
ein Schemabild einer dritten, insbesondere platzsparenden Ausführungsform der Störwirkkörper mit einer flexiblen Hülle und Aufblasmitteln.
This object is achieved in a surprisingly simple manner by the measures indicated in claim 1. Further developments and refinements are specified in the subclaims, and exemplary embodiments are explained in the following description. These explanations are supplemented by the figures in the drawing. Show it:
Fig. 1
a diagram of the individual phases with regard to the application and effect of the proposed system before passing and after passing through the active body cloud,
Fig. 2
2 shows a schematic image of an embodiment of the proposed active bodies made of resilient material in the pack and suspended configuration in a side view,
Fig. 3
1 shows a schematic image of a further embodiment of the interfering bodies, which are positioned transversely to the direction of flow, in the packing and in the floating configuration, and after contact with the aerodynamic surface,
Fig. 4
a schematic image of a third, in particular space-saving embodiment of the interference body with a flexible shell and inflating means.

Wie die Fig. 1 veranschaulicht, sieht die 1. Phase der nichtletalen Bekämpfung von Fluggeräten FG aller Art und Größen vor, mittels eines zielsuchenden bzw. selbstlenkenden und mit einem Abstands- oder Annäherungszünder versehenen Flugkörpers 11, der dicht mit Störwirkkörpem 10 gefüllt ist, diese in die Nähe des zur Landung zu zwingenden Fluggerätes FG zu bringen und den Flugkörper 11 so zur Explosion zu bringen, daß das in Frage stehende Fluggerät FG von einer dichten Wolke von Störwirkkörpem 10 umschlossen wird. Infolge der Flugbewegung und gegebenenfalls auch durch den Anpreßdruck der "Explosion" des Störwirkkörperträgers 11 werden diese Störwirkkörper 10 in Staupunktnähe der aerodynamischen Flächen 12 angepreßt und erzeugen somit im aerodynamisch sensitivsten Bereich Störungen im Luftstrom 13, die zu einer erheblichen Verschlechterung des Flugverhaltens führen und Vibrationen, Widerstandserhöhungen 14 und Auftriebseinbußen 15 hervorrufen. Dies führt zwangsläufig zu einer eingeschränkten Manövrierfähigkeit, einem Flugreichweitenverlust und letztlich zur Verunsicherung des Flugzeugführers.As illustrated in FIG. 1, the first phase of the non-lethal combat of aircraft FG of all types and sizes provides by means of a target-seeking or self-steering and with a distance or proximity fuse missile 11, which is filled with interference bodies 10, to bring them close to the aircraft to be forced to land FG and to cause the missile 11 to explode such that the aircraft FG in question is surrounded by a dense cloud of interfering bodies 10. As a result of the flight movement and possibly also due to the contact pressure of the "explosion" of the interfering element carrier 11, these interfering element 10 are pressed close to the stagnation point of the aerodynamic surfaces 12 and thus generate disturbances in the air flow 13 in the most aerodynamically sensitive area, which lead to a considerable deterioration in the flight behavior and vibrations, Resistance increases 14 and loss of buoyancy 15 cause. This inevitably leads to limited maneuverability, loss of flight range and ultimately to the pilot's uncertainty.

Um nun dem Fluggerät FG eine einwandfreie, uneingeschränkte Landung zu ermöglichen, müssen die Störwirkkörper 10 so konzipiert sein, daß ihre Störbeeinflussung beim Landeanflug soweit reduziert ist oder wird, daß die Landung absolut sicher durchführbar ist. Dies wird zu einem großen Teil allein schon durch die Reduzierung der Reisegeschwindigkeit auf die Landegeschwindigkeit realisierbar sein, da ein großer Teil der Störwirkkörper 10 beispielsweise von selbst abfallen werden.In order to enable the aircraft FG to make a perfect, unrestricted landing, the interfering bodies 10 must be designed in such a way that their interference on landing approaches is or is reduced to such an extent that the landing can be carried out with absolute certainty. To a large extent, this will be achievable simply by reducing the cruising speed to the landing speed, since a large part of the interfering bodies 10 will fall off by themselves, for example.

Die einzelnen Störwirkkörper 10 sind in ihrer Form, Ausgestaltung und Größe in vielfältiger Weise herstellbar. Sie sollen eine Länge von 5 bis etwa 20 cm und eine Dicke von wenigen Zehntelmillimetern bis zu etwa 2 bis 3 Zentimetern haben. Verschiedene Ausführungsformen sind in den Fig. 2 bis 4 der Zeichnung veranschaulicht. Das Ausführungsbeispiel nach Fig. 2 besteht aus federndem Material, das unter Kraftanwendung während des sogenannten Packvorganges in eine flache Form gezwungen wird. Nach dem Ausstoß - also im Schwebezustand - nehmen die Störwirkkörper 10 eine deutlich räumlich ausgedehnte Form an, um sich an die Kontur der aerodynamischen Flächen 12 anzupassen und hängen zu bleiben. es wird also - wie die Fig. 2 veanschaulicht - ein schmales federndes Stahlband in seiner Längsrichtung verdrillt und einzelne Teilflächen aufgespreizt.The shape, design and size of the individual interfering bodies 10 can be produced in a variety of ways. They should have a length of 5 to about 20 cm and a thickness of a few tenths of a millimeter up to about 2 to 3 centimeters. Different embodiments are illustrated in FIGS. 2 to 4 of the drawing. The embodiment of FIG. 2 consists of resilient material which is forced into a flat shape with the application of force during the so-called packing process. After the emission - well in the floating state - the interfering bodies 10 take on a clearly spatially extended shape in order to adapt to the contour of the aerodynamic surfaces 12 and to get caught. it is - as shown in FIG. 2 - a narrow, resilient steel strip is twisted in its longitudinal direction and individual partial areas are spread apart.

Die Fig. 3 zeigt eine andere Version. Hier bestehen die Störwirkkörper 10 aus durch einen Faden 16 miteinander verbundene Ketten von kleinen, im wesentlichen flachen Körpern aus Metall oder Kunststoff, die so gestaltet sind, daß sie sich bei Anströmung quer zur Strömung stellen, beispielsweise als Kegel oder entsprechend befestigte Scheiben, mehreckige Plättchen etc..3 shows another version. Here, the interfering bodies 10 consist of a string 16 interconnected chains of small, essentially flat bodies made of metal or plastic, which are designed so that they face transversely to the flow during the flow, for example as a cone or appropriately attached disks, polygonal plates Etc..

Das in Fig. 4 dargestellte Ausführungsbeispiel besteht aus länglichen, flach aufblasbaren Hüllen 17, die sich beim Ausbringen aufblähen. Hierzu enthält in einem Ausführungsbeispiel jede Hülle 17 ein Aufblasmittel 18, 19, das unter etwas erhöhtem Druck flüssig 18 und unter atmosphärischem oder Staudruck jedoch gasförmig 19 ist (das sogenannte Butanfeuerzeugprinzip). Zum Transport werden diese Störwirkkörper 10 unter erhöhtem Druck gehalten.The embodiment shown in Fig. 4 consists of elongated, flat inflatable shells 17 which inflate when deployed. For this purpose, in one exemplary embodiment, each sleeve 17 contains an inflating means 18, 19 which is liquid 18 under somewhat increased pressure and is gaseous 19 under atmospheric or dynamic pressure (the so-called butane lighter principle). These interfering active bodies 10 are held under increased pressure for transport.

Bei einem weiteren Ausführungsbeispiel bestehen die Störwirkkörper 10 aus Schaum und werden erst beim Ausbringen erzeugt. Zu transportieren ist hier ein bestimmter Speichervorrat an schaumbildendem Material, zusammen mit einem Generator, beispielsweise einer strangbildenden Misch- und Zerhackeinrichtung zur Bildung der Störwirkkörper 10. Diese sind vorzugsweise langgestreckt, aber auch ringförmig, kettenförmig mit oder ohne Widerhaken, Nasen oder Reibflächen usw..In a further exemplary embodiment, the interfering active bodies 10 consist of foam and are only generated when they are deployed. A certain storage supply of foam-forming material is to be transported here, together with a generator, for example a strand-forming mixing and chopping device to form the interfering bodies 10. These are preferably elongated, but also annular, chain-like with or without barbs, noses or friction surfaces, etc.

Nun sind aber die diversen Störwirkkörper 10 so ausgebildet, daß sie von selbst nach einer gewissen Zeit wieder eine flache Form einnehmen oder abbzw. zerfallen. Hierdurch wird erreicht, daß der Störeffekt sich zumindest so verringert, daß eine gefahrlose, weitgehend optimale Landung gewährleistet ist. Hierzu ist es unter anderem denkbar, daß die Störwirkkörper 10 durch Bestrahlung von außen wieder eine flache Form einnehmen oder zerfallen. Als Beispiel hierfür sind Wirkkörper anzuführen, die teilweise oder ganz aus einem Material bestehen, das durch Bestrahlung mit Laserlicht, Mikrowellen etc. zerfällt. Diese Ausführungsform hat den Vorteil, daß die Beeinträchtigung des Flugzeuges sofort aufgehoben werden kann, wenn sichtbar ist, daß es den Anweisungen Folge leistet.Now, however, the various interfering bodies 10 are designed so that they take on a flat shape again after a certain time or abbzw. disintegrate. This ensures that the interference effect is at least so reduces that a safe, largely optimal landing is guaranteed. For this purpose, it is conceivable, inter alia, that the interfering active bodies 10 assume a flat shape or disintegrate again due to external radiation. Examples of this are active bodies which consist partially or entirely of a material which decomposes when irradiated with laser light, microwaves, etc. This embodiment has the advantage that the impairment of the aircraft can be removed immediately if it can be seen that it is following the instructions.

Claims (5)

  1. Method of combating flying objects (FG) by generating flight-mechanical impairment, with a plurality of interference elements (10) being transported by means of carrier or transport devices (11) within an effective range of the flying object (FG) and being cloudlike dispersed thereat, and after their release the interference elements (10) encase the flying object (FG) to be impaired and abut its surfaces (12), and these interference elements (10) are made of a resilient material and by application of force (P) forced into a spacesaving form for the pack configuration and by themselves change into a spatially expanded form in the set-free-and suspension configuration, characterised in that for the purpose of non-lethal combat, a plurality of interference elements (10) with a length between 5 and approximately 20 cm surrounds a flying object to be impaired and abut its aerodynamic surfaces (12) near its stagnation point and are forced by application of force (P) into a flat spacesaving form for the pack configuration, and these interference elements (10) remain essentially constant in their longitudinal expansion between the spacesaving form and the expanded form.
  2. Method according to Claim 1, characterised in that the interference elements (10) are composed of chain configurations, which are joined together by a thread (16) and formed by flat, round, cornered or toothed material elements with a thickness of a few tenths of a millimetre up to approximately 2 to 3 cm and which, during inflow (13) fully or virtually position themselves transversely to the flow (13).
  3. Method according to Claim 1, characterised in that the elongated interference elements (10) are composed of an inflatable flexible but shape-retaining sleeve (17) containing one of more inflating means (18,19) which are liquid (18) under slightly increased pressure (P) and transform into a gaseous state (19) under atmospheric or stagnation pressure.
  4. Method according to Claim 1, characterised in that the interference elements (10) of a foam substance are established and formed on release.
  5. Method according to Claim 1, characterised in that the interference elements (10) are in the shape of narrow springy steel bands which are twisted in their longitudinal direction, and individual part surfaces are spread open.
EP95106519A 1994-06-06 1995-04-29 Device for non-lethal combat against aircraft Expired - Lifetime EP0691519B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4419788 1994-06-06
DE4419788A DE4419788C2 (en) 1994-06-06 1994-06-06 Device for non-lethal combat against aircraft

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EP0691519A1 EP0691519A1 (en) 1996-01-10
EP0691519B1 true EP0691519B1 (en) 1997-04-09

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DE4419788A1 (en) 1995-12-07
DE4419788C2 (en) 1996-05-30
EP0691519A1 (en) 1996-01-10
US5814753A (en) 1998-09-29
DE59500172D1 (en) 1997-05-15

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