EP0774106B1 - Vollkalibergeschoss zur verwendung gegen unterwasserziele - Google Patents

Vollkalibergeschoss zur verwendung gegen unterwasserziele Download PDF

Info

Publication number
EP0774106B1
EP0774106B1 EP96919402A EP96919402A EP0774106B1 EP 0774106 B1 EP0774106 B1 EP 0774106B1 EP 96919402 A EP96919402 A EP 96919402A EP 96919402 A EP96919402 A EP 96919402A EP 0774106 B1 EP0774106 B1 EP 0774106B1
Authority
EP
European Patent Office
Prior art keywords
projectile
stinger
nose
diameter
afterbody
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
EP96919402A
Other languages
English (en)
French (fr)
Other versions
EP0774106A1 (de
Inventor
Jeffrey A. Brown
Reed Copsey
Marshall Tulin
Roy Kline
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.)
Raytheon Co
Original Assignee
Raytheon 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 Raytheon Co filed Critical Raytheon Co
Publication of EP0774106A1 publication Critical patent/EP0774106A1/de
Application granted granted Critical
Publication of EP0774106B1 publication Critical patent/EP0774106B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F42B10/32—Range-reducing or range-increasing arrangements; Fall-retarding means
    • F42B10/38—Range-increasing arrangements
    • F42B10/42—Streamlined projectiles
    • F42B10/46—Streamlined nose cones; Windshields; Radomes
    • 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
    • F42B10/02—Stabilising arrangements

Definitions

  • This invention relates to munitions, and, more particularly, to a projectile system that can be fired from air against underwater objects located at moderate underwater ranges.
  • the invention relates also to a method for damaging a target by firing a projectile into a water surface.
  • DE-A-4022462 US-3282216 and US-3434425.
  • DE-A-4 022 462 is a basis for the preamble of claim 1.
  • Projectiles are widely used against targets in air.
  • the projectile is placed into a gun, together with a propellant.
  • the propellant is ignited, driving the projectile out of the barrel of the gun and toward the target.
  • Projectiles have extremely limited capability to be fired from air against targets in water, primarily for three reasons.
  • the projectile may not enter the water at all, and instead may skip away.
  • the projectile may enter the water but its path is altered. This problem is always a consideration, but it is of particular concern to the accuracy of the projectile when the surface of the water exhibits a constantly varying state due to wave motion.
  • Second, the drag produced by the water rapidly slows the projectile and drastically limits its range.
  • the range of conventional projectiles in water varies according to the weight and velocity of the projectile, but is typically at most no more than about 91 cm (3 feet) under optimal conditions for a conventional .50 caliber projectile.
  • the present invention fulfills this need, and further provides related advantages.
  • the present invention provides a projectile system as defined in claim 1 and a method for its use as defined in claim 10.
  • the projectile system is fired from a gun located in air against submerged underwater objects, passing through the air/water interface on its way to the target.
  • the projectile is directly received into and fired from the mechanism of a gun of a preselected barrel bore.
  • the demonstrated range of projectile is about 4.6 metres (15 feet) under water in a 0.50 caliber size.
  • the projectile can pass through the air/water interface with little or no deflection, regardless of the angle of incidence of the projectile.
  • the projectile is relatively inexpensive and can be produced for a variety of both conventional and unconventional weapons of various bores.
  • the present invention provides a projectile having a projectile forward end and a projectile rearward end, the projectile comprising:
  • the projectile of the invention is a full caliber projectile. That is, the projectile is received into and fired from the mechanism of a gun of a preselected bore (caliber) without any intermediate structure such as a sabot. Accordingly, that portion of the projectile which contacts the bore of the gun must not cause unduly large wear to the bore of the gun and must not deposit to an undue extent upon the bore of the gun.
  • the projectile is preferably formed of at least two, and most preferably three, component sections.
  • the stinger is of reduced diameter that does not contact the bore of the gun and can therefore be made of the hard, durable material such as a high-speed steel, tungsten carbide, or a tungsten alloy. That portion of the projectile body which contacts the bore of the gun, preferably the projectile afterbody, must be made of a material that does not unduly wear or deposit onto the bore. Examples of such a material include brass, copper, or lead.
  • the projectile forebody does not contact the bore of the gun, and is preferably made of a dense, hard material such as tungsten.
  • the projectile forebody is preferably formed as a third component and joined to the stinger and projectile afterbody.
  • the cavitation void is a substantially liquid-free volume extending radially outwardly and rearwardly from the wetted forward end of the projectile, when the projectile travels through water.
  • This volume filled only with air and water vapor, exerts little drag and/or lateral force on the body of the projectile. Consequently, the projectile can travel for moderately large distances through water.
  • the stabilizing means preferably in the form of the stabilizing shoulder between the projectile forebody and the projectile afterbody, interacts with the surface of the cavitation void and exerts a restoring force that tends to bring the cylindrical axis of the projectile back into coincidence with the trajectory. Absent such a restoring force, the projectile would quickly deviate from its trajectory and begin tumbling.
  • a projectile is an object that is propelled by an external force, and which has no capacity for self propulsion.
  • a bullet mounted to a canister of propellant that remains in a gun after the bullet is fired, is a projectile because the bullet itself has no self-propulsion capability.
  • aircraft, rockets, and torpedoes that have a built-in engine and carry their own fuel are not projectiles.
  • the present invention relates to a projectile and a system for its utilization, not to a self-propelled device which presents an entirely different set of problems in relation to its design and use.
  • the present invention provides an important advance in the art of projectile systems.
  • the projectile of the invention can be fired from air effectively against an underwater target. In the air, the projectile is spin stabilized along a straight trajectory. The projectile passes through the air/water interface with little deflection, for a wide range of angles of incidence. In water, the trajectory is maintained and there is a moderate underwater range.
  • Figure 1 depicts a series 20 of projectiles being propelled from a gun 22, which is located in air, toward a target 24, which is immersed in water.
  • the first-fired projectile 26 has passed through an air/water interface 28 and is surrounded by water.
  • the first-fired projectile 26 resides within a cavitation void 30, so that the surrounding water does not actually touch the first-fired projectile 26 except at its wetted forwardmost end.
  • a second-fired projectile 32 is still travelling along its trajectory in air.
  • a third-fired projectile 34 is still within a bore 36 of a barrel 38 of the gun 22.
  • the bore 36 of the barrel 38 is desirably rifled, so as to impart a spin to the projectile as it travels the length of the barrel 38.
  • the spin gyroscopically stabilizes the projectile to travel along a trajectory that is initially defined by the direction in which the barrel 38 is pointed.
  • the bore 36 has a diameter D B , which is slightly larger than the maximum diameter of the body of the projectile, D P .
  • the bore diameter D B is of a preselected size or caliber, such as, for example, .50 caliber.
  • the bore diameter may be of a preselected standard size such as .50 caliber or a preselected nonstandard size.
  • the projectile body diameter D P is sized for direct insertion into and firing from the bore 36 of the gun 22.
  • direct insertion into means that no intermediate structure, such as a sabot, is positioned around the projectile. The projectile is inserted into the receiver or breech mechanism of the gun (not shown).
  • D P is less than D B by less than about 0.076 mm (0.003 inches), depending upon the value of D B .
  • the diameter of the projectile 34 is too small, the propellant gases will partially escape in the overly large clearance between the projectile and the bore when the gun is fired, resulting in a loss of propulsive efficiency. Additionally, the rifling of the barrel 38 will not function properly to impart a spin to the projectile which gyroscopically stabilizes the projectile. If the diameter of the projectile 34 is too large, the projectile will physically not fit within the bore 36 or, if it does fit within the bore, will cause excessive wear as it passes along the bore when fired.
  • Figure 2 illustrates one embodiment of a projectile 50 in side elevation
  • Figure 3 shows the front elevation of the same projectile.
  • the projectile 50 is generally cylindrically symmetric with a forward end 52 and a rearward end 54.
  • "generally cylindrically symmetric" means that the body is cylindrically symmetric about a cylindrical axis 56, except that there may be discrete features such as deployable fins (discussed subsequently) which are spaced around the circumference of the body.
  • the projectile body 58 includes a generally cylindrically symmetric projectile afterbody 60 that occupies approximately the rearmost half of the projectile body 58.
  • the projectile body 58 also includes a generally cylindrically symmetric projectile forebody 62 whose rearward end 64 is contiguous with the projectile afterbody 60.
  • the projectile forebody 62 is in the shape of a frustum of a cone.
  • a structure that creates the cavitation void 30 around the projectile 50 when the projectile 50 travels rapidly through water is located at the forward end 52 of the projectile 50. This structure passes through the water such that the water does not flow along the projectile body 58. Instead, the water is forced in a transverse direction so that it does not contact and wet the sides of the projectile body 58. Only the cavitation-producing structure contacts and is wetted by the water.
  • the cavitation void 30 is a partial vacuum that may contain some air and water vapor.
  • Figure 4 illustrates one form of the cavitation-producing structure, a stinger head 74.
  • the stinger head 74 is cylindrically symmetric about the cylindrical axis 56 and is affixed to a projectile body forward end 76.
  • the stinger head 74 includes a forwardmost stinger nose 78.
  • the stinger nose 78 includes a flat, blunt forward face 80 with a nose maximum diameter D N .
  • This forward face 80 is preferably very smooth, with a surface roughness of no more than about 4.1 x 10 -4 mm (16 microinches).
  • the stinger nose 78 tapers radially inwardly at an angle A, which is preferably about 80°, relative to the forward face 80.
  • the stinger nose 78 is supported on a stinger body 82, which in turn is affixed to the projectile body forward end 76.
  • the stinger body 82 includes a cylindrical stinger nose support 84 and a circumferential flow separation groove 86 between the stinger nose support 84 and the stinger nose 78.
  • the flow separation groove 86 may alternatively be viewed as a forwardly facing shoulder between the stinger nose support 84 and the stinger nose 78.
  • a diameter D G of the flow separation groove 86 is less than the diameter D N of the forward face 80 of the stinger nose 78.
  • the stinger head 74 is preferably made of a hard material such as high speed steel, tungsten carbide, or tungsten alloy to resist impact with the water.
  • the stinger head 74 impacts the water at velocities as high as 910-1220 metres per second (3000-4000 feet per second), which imposes a loading of about 50 kilobars on the stinger head in a period of about 0.1 microsecond.
  • the stinger nose 78 portion of the stinger head 74 should be very smooth to promote a thin boundary layer dimension. Testing has shown that the stinger nose 78 desirably has a surface roughness of no greater than about 4.1 x 10 -4 mm (16 microinches) in order to achieve the desired boundary layer dimension as the projectile travels through the water.
  • a water flow boundary layer is produced at the stinger nose 78.
  • the water flow boundary layer adheres to the surface of the stinger nose 78.
  • the inwardly tapered shape of the stinger nose 78 cooperates with the flow separation groove 86 to cause an intended flow separation of the water from the projectile 50 as the projectile 50 passes through the water. As shown in Figure 5, this flow separation creates the cavitation void 30.
  • the forwardly facing surface 80 of the stinger nose 78 portion of the projectile 50 contacts the water, and the remainder of the projectile 50 is not wetted.
  • the pressure and skin drag on the projectile 50 is therefore minimal, resulting in greatly extended underwater range of the projectile as compared with conventional projectiles. Hydrodynamic effects on the projectile that potentially cause trajectory deviations are also reduced.
  • the stinger nose 78 is not optimally streamlined for passage through the air, but because of its small diameter the added air resistance is not significant and the projectile 50 is capable of supersonic flight through air.
  • the projectile 50 preferably includes a forwardly facing stabilization shoulder 90 positioned between the projectile afterbody 60 and the projectile forebody 62, as seen in Figures 2, 3, 5, 6, and 7.
  • This stabilization shoulder 90 is formed by making the diameter of the projectile afterbody 60 larger than that of the projectile forebody 62 at their point of joining.
  • the shoulder 90 may be at 90° to the cylindrical axis 56, or rearwardly tapered.
  • the stabilization shoulder 90 functions in the manner shown in Figure 6. If the projectile 50 yaws into the wall of the cavity 30 due to the imposition of a lateral force, the stabilization shoulder 90 is brought into contact with the envelope of the cavitation void 30 at a location indicated by arrow R. Water pressure against the stabilization shoulder 90 creates a restoring force that pushes the cylindrical axis 56 of the projectile 50 back toward coincidence with the trajectory 88.
  • the projectile 50 is desirably manufactured in three pieces shown in Figure 2: the stinger head 74, the projectile afterbody 62, and the projectile forebody 64.
  • This approach allows the stinger head 74 to be made of a hard, erosion-resistant, and impact-resistant material such as high speed steel, tungsten carbide, or tungsten alloy.
  • the stinger head 74 can be machined to an extremely smooth finish.
  • the projectile forebody 64 is made of a soft, dense material such as tungsten, to provide mass at a location as far forward in the projectile as possible.
  • the projectile afterbody 62 is made of a softer material that does not damage the barrel of the gun during firing, such as brass, copper, or lead.
  • the projectile 50 preferably has a length-to-diameter ratio (L/D) of greater than 4:1, and is preferably from about 4:1 to about 8:1.
  • L/D length-to-diameter ratio
  • the restoring force moment arm is insufficient to counteract lateral instability and there is insufficient mass in the projectile for satisfactory penetration.
  • L/D the projectile becomes difficult to stabilize gyroscopically and cannot be accommodated in conventional gun mechanisms.
  • conventional fired projectiles have L/D ratios of about 2-3.
  • Figure 7 illustrates a projectile 100 having a set of fins 102 at the rearward end 54 of the projectile.
  • This projectile 100 is designed for firing from guns having barrels which are not rifled and therefore do not impart a gyroscopic stabilizing spin to the projectile as it is fired.
  • the set of fins 102 provides aerodynamic stabilization of the projectile 100 as it flies through the air.
  • the fins 102 fold against the side of the projectile 100 when it is within a casing (not shown) prior to firing.
  • the fins 102 remain folded against the side of the projectile 100 as it travels the length of the barrel 38 when fired, and then unfold after leaving the barrel.
  • the opening action of the fins 102 can be produced in any of several ways.
  • the fins 102 are formed of a springy metal such as a spring steel and cantilevered from the side of the projectile.
  • the fins are folded down to lie against the sides of the projectile within the cartridge. When the projectile 100 leaves the barrel, the fins 102 unfold.
  • the fins 102 are mounted to the body 58 of the projectile 100 by hinges 104 that operate between a closed position with the fins folded flat and an open position with the fins extended.
  • FIG. 7 Another embodiment of a stinger head 106 is also shown in Figure 7 and in greater detail in Figure 8.
  • the stinger head 106 is like the stinger head 74, except that a conical forward face 108 is substituted for the flat forward face 80 of Figure 4.
  • An included conical angle B of the conical nose 108 can be as large as about 130° while still permitting the stinger head 106 to cooperate with the flow separation groove 86 to induce the flow separation that leads to the formation of the cavitation void 30 as the projectile 100 travels through the water.
  • the flat forward face 80 of Figure 4 is preferred to induce the flow separation, but the use of the conical forward face 108 has the advantage that it reduces the shock loading on the projectile 100 as it enters the water at the air/water interface 28. For designs utilizing a high mass of the projectile and a propellant creating a high muzzle velocity, it may be necessary to reduce such shock loading so that the projectile does not fragment when it enters the water.
  • Figure 7 also shows another embodiment of a projectile forebody 110.
  • the projectile forebody 62 of Figure 2 is generally conical.
  • the projectile forebody 110 of Figure 7 is ogival in shape.
  • An ogive having a shape generally describable as comprising a portion of an ellipse, is convexly curved outwardly as compared with a conical shape.
  • the ogive permits additional mass of the projectile 100 to be concentrated toward the forward end of the projectile 100, as desired, rather than toward its rear.
  • Ogival shapes are used in some other contexts such as some conventional bullets, missiles, and rockets for another reason, the reduction of aerodynamic drag.
  • the ogival projectile forebody 110 has little effect on aerodynamic drag as compared with the conical projectile forebody 62. Instead, as noted, its function is to increase the mass of the projectile 100, with the mass positioned near the forward end. Other shapes of the projectile forebody can also be used.
  • Figure 9 illustrates a preferred method for utilizing any of the projectiles made according to the present invention to damage an underwater object.
  • a projectile is provided, numeral 120.
  • the projectile is as previously described, or has a combination of the features previously described.
  • the projectile is propelled toward an underwater target from a location in the air, numeral 122, as illustrated in Figure 1.
  • the projectile travels through the air initially, passes through the air/water interface, and then travels through the water.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)

Claims (10)

  1. Geschoß (50), mit einem vorderen Geschoßende und einem hinteren Geschoßende, wobei das Geschoß aufweist:
    einen allgemein zylindersymmetrischen Stingerkopf (74) am vorderen Geschoßende, wobei der Stingerkopf (74)
    eine Stingerspitze (78), die einen maximalen Spitzendurchmesser (DN) aufweist, und
    einen Stingerkörper (82) umfaßt, der ein vorderes Stingerkörperende aufweist, das mit einem hinteren Ende der Stingerspitze (78) verbunden ist, wobei der Stingerkörper (82)
    einen Stingerspitzenträger (84) umfaßt, der einen Spitzenträgerdurchmesser aufweist;
    einen allgemein zylindersymmetrischen Geschoßkörper (58), der mit dem Stingerkopf (74) verbunden ist und
    einen Geschoßhinterkörper (60), der einen Geschoßhinterkörperdurchmesser aufweist, der zum direkten Einsetzen in und zum Abfeuern aus einem Geschütz (22) einer vorausgewählten Bohrung betriebsgeeignet ist, wobei der Geschoßhinterkörperdurchmesser größer ist als der maximale Spitzendurchmesser (DN), und
    einen Geschoßvorderkörper (62) aufweist, der mit dem Stingerspitzenträger (74) an einem vorderen Ende und mit dem Geschoßhinterkörper (60) an einem hinteren Ende verbunden ist;
       gekennzeichnet durch
    eine Strömungsabrißnut (86) zwischen dem Stingerspitzenträger (84) und der Stingerspitze (78), wobei die Strömungsabrißnut (86) einen Nutdurchmesser (DG) aufweist, der kleiner ist als der maximale Spitzendurchmesser (DN);
    eine stabilisierende Schulter (90) zwischen dem Geschoßvorderkörper (62) und dem Geschoßhinterkörper (60); und
    wobei die Stingerspitze (78) eine Oberflächenbeschaffenheit von nicht größer als etwa 4,1 x 10-4 mm (16 Mikroinch) aufweist.
  2. Geschoß nach Anspruch 1, wobei die Stingerspitze (78) eine stumpfe Stirnseite (80) aufweist.
  3. Geschoß nach Anspruch 1, wobei die Stingerspitze (78) eine konische Stirnseite (108) aufweist.
  4. Geschoß nach Anspruch 1, wobei die Stingerspitze (78) einen vorderen Stingenspitzenbereich mit einem maximalen Stingerspitzenvorderbereichsdurchmesser (DN) und
       einen hinteren Stingerspitzenbereich aufweist, der der Strömungsabrißnut (86) benachbart ist, wobei der hintere Stingerspitzenbereich einen Stingerspitzenhinterbereichsdurchmesser (DG) aufweist, der kleiner ist als der maximale Stingerspitzenvorderbereichsdurchmesser (DN).
  5. Geschoß nach Anspruch 1, wobei die Strömungsabrißnut (86) eine nach vorn zeigende Abrißnutschulter zwischen der Stingerspitze (78) und dem Stingerspitzenträger (84) aufweist.
  6. Geschoß nach Anspruch 1, wobei der Durchmesser des Geschoßvorderkörpers (62) allmählich vom Durchmesser des Hinterkörpers (60) an seinem hinteren Ende zum Durchmesser des Spitzenträgers (84) an seinem vorderen Ende abnimmt.
  7. Geschoß nach Anspruch 6, wobei der Geschoßvorderkörper (62) konisch ist.
  8. Geschoß nach Anspruch 6, wobei der Geschoßvorderkörper (62) spitzbogenförmig ist.
  9. Geschoß nach Anspruch 1, wobei der Stingerkopf (74) aus einem Material gefertigt ist, das aus der Gruppe bestehend aus Stahl und Wolframkarbid ausgewählt ist.
  10. Verfahren zum Beschädigen eines Unterwasserziels (24), mit den Schritten
    Einsetzen eines Geschosses (50) nach einem der Ansprüche 1 bis 9 in ein Geschütz; und
    Treiben des Geschosses (50) von einem Ort in der Luft aus durch eine Luft-/Wasser-Grenzfläche (28) in Wasser hinein gegen ein Unterwasserziel (24).
EP96919402A 1995-06-07 1996-06-03 Vollkalibergeschoss zur verwendung gegen unterwasserziele Expired - Lifetime EP0774106B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US47442895A 1995-06-07 1995-06-07
US474428 1995-06-07
PCT/US1996/010244 WO1996041116A1 (en) 1995-06-07 1996-06-03 Full caliber projectile for use against underwater objects

Publications (2)

Publication Number Publication Date
EP0774106A1 EP0774106A1 (de) 1997-05-21
EP0774106B1 true EP0774106B1 (de) 2000-03-08

Family

ID=23883494

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96919402A Expired - Lifetime EP0774106B1 (de) 1995-06-07 1996-06-03 Vollkalibergeschoss zur verwendung gegen unterwasserziele

Country Status (9)

Country Link
EP (1) EP0774106B1 (de)
JP (1) JPH10501883A (de)
KR (1) KR970705002A (de)
AU (1) AU686954B2 (de)
CA (1) CA2196976A1 (de)
DE (1) DE69606951T2 (de)
IL (1) IL120161A0 (de)
NO (1) NO970555L (de)
WO (1) WO1996041116A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2407148B (en) * 1996-07-04 2005-08-03 Secr Defence Weapon system for attack of underwater targets
US11821716B2 (en) 2018-12-19 2023-11-21 Bae Systems Plc Munitions and projectiles
WO2020128460A1 (en) * 2018-12-19 2020-06-25 Bae Systems Plc Munitions and projectiles

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4022462A1 (de) * 1990-07-14 1992-01-16 Diehl Gmbh & Co Luftverbringbares unterwasser-projektil

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3282216A (en) * 1962-01-30 1966-11-01 Clifford T Calfee Nose cone and tail structures for an air vehicle
US3434425A (en) * 1967-06-30 1969-03-25 Aai Corp Underwater projectile
DE3314750A1 (de) * 1983-04-23 1984-10-25 L'Etat Français représenté par le Délégué Général pour l'Armement, Paris Mittel zum verbessern des abloeseverhaltens von treibkaefigsegmenten von einem wuchtgeschoss fuer die rohrwaffe

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4022462A1 (de) * 1990-07-14 1992-01-16 Diehl Gmbh & Co Luftverbringbares unterwasser-projektil

Also Published As

Publication number Publication date
KR970705002A (ko) 1997-09-06
JPH10501883A (ja) 1998-02-17
WO1996041116A1 (en) 1996-12-19
NO970555L (no) 1997-04-01
EP0774106A1 (de) 1997-05-21
DE69606951T2 (de) 2000-11-16
AU6175396A (en) 1996-12-30
IL120161A0 (en) 1997-06-10
AU686954B2 (en) 1998-02-12
CA2196976A1 (en) 1996-12-19
DE69606951D1 (de) 2000-04-13
NO970555D0 (no) 1997-02-06

Similar Documents

Publication Publication Date Title
EP0774105B1 (de) Aerodynamisch stabilisiertes projektilsystem zur anwendung gegen unterwasserobjekte
USH1938H1 (en) Supercavitating water-entry projectile
US5515787A (en) Tubular projectile
US7207275B1 (en) Firearm projectile
US8082851B2 (en) Cavitating core
US4612860A (en) Projectile
US4788915A (en) Hunting ammunition comprising a bullet of increased effectiveness
AU667060B2 (en) A practice projectile
US20230243629A1 (en) Cavitation core of a firearm projectile
US5297492A (en) Armor piercing fin-stabilized discarding sabot tracer projectile
US5804759A (en) Hunting bullet having a telescoping flechette and comprising a sub-projectile connected to a launcher
US11421970B2 (en) Spinning projectile
US4886223A (en) Projectile with spin chambers
EP0774106B1 (de) Vollkalibergeschoss zur verwendung gegen unterwasserziele
US5014931A (en) Kinetic energy projectile with impact-ejected fins
US5092246A (en) Small arms ammunition
CN101113882A (zh) 一种降低弹体激波阻力的弹体结构及方法
JP3575831B2 (ja) 縮射用翼安定徹甲弾の速度低下の低減
KR100331776B1 (ko) 소구경발사체를위한부품들이조절분리되는탄환발사장치
GB2105444A (en) Practice projectile
AU685027B2 (en) Gyroscopically stabilized projectile system for use against underwater objects
US3067685A (en) Supersonic barrel-fired projectiles carrying propulsion units
US20060124021A1 (en) High velocity projectiles
RU2125229C1 (ru) Реактивный артиллерийский снаряд

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: A1

Designated state(s): DE FR GB IT NL SE

17P Request for examination filed

Effective date: 19970528

17Q First examination report despatched

Effective date: 19970805

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: RAYTHEON COMPANY

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT NL SE

REF Corresponds to:

Ref document number: 69606951

Country of ref document: DE

Date of ref document: 20000413

ET Fr: translation filed
ITF It: translation for a ep patent filed

Owner name: SOCIETA' ITALIANA BREVETTI S.P.A.

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
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

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

Ref country code: SE

Payment date: 20110613

Year of fee payment: 16

Ref country code: FR

Payment date: 20110621

Year of fee payment: 16

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

Ref country code: NL

Payment date: 20110621

Year of fee payment: 16

Ref country code: GB

Payment date: 20110601

Year of fee payment: 16

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

Ref country code: DE

Payment date: 20110601

Year of fee payment: 16

Ref country code: IT

Payment date: 20110616

Year of fee payment: 16

REG Reference to a national code

Ref country code: NL

Ref legal event code: V1

Effective date: 20130101

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20120603

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 NON-PAYMENT OF DUE FEES

Effective date: 20120603

Ref country code: SE

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

Effective date: 20120604

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20130228

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

Ref country code: NL

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

Effective date: 20130101

Ref country code: GB

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

Effective date: 20120603

Ref country code: FR

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

Effective date: 20120702

Ref country code: DE

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

Effective date: 20130101

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 69606951

Country of ref document: DE

Effective date: 20130101