EP0258531A1 - Projectile body provided with a rotating strap arranged on it - Google Patents
Projectile body provided with a rotating strap arranged on it Download PDFInfo
- Publication number
- EP0258531A1 EP0258531A1 EP87106389A EP87106389A EP0258531A1 EP 0258531 A1 EP0258531 A1 EP 0258531A1 EP 87106389 A EP87106389 A EP 87106389A EP 87106389 A EP87106389 A EP 87106389A EP 0258531 A1 EP0258531 A1 EP 0258531A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- guide band
- projectile
- guide
- projectile body
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000463 material Substances 0.000 claims abstract description 5
- 238000010008 shearing Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000003380 propellant Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B14/00—Projectiles or missiles characterised by arrangements for guiding or sealing them inside barrels, or for lubricating or cleaning barrels
- F42B14/02—Driving bands; Rotating bands
Definitions
- the guide tapes can e.g. B. made of copper, soft iron or plastic.
- the projectile is particularly sensitive to radial pressure, since large stresses on the material can occur at points dependent on the projectile geometry.
- the shell can u. a. are pressed inwards and the seal against the propellant gases usually guaranteed by the guide band is no longer guaranteed.
- the present invention is therefore based on the object of specifying a projectile body of the type mentioned at the outset, in which, especially when using very thin-walled casings, there is a reduction in the mean guide band pressure and a better seal against the gas pressure.
- the axial extent of the relief grooves depends on the rigidity of the shell and should be> 4 mm for artillery shells with metal guide bands.
- Fig. 1 denotes a projectile body, 2 the projectile casing and 3 the guide band.
- the guide band 3 is dimensioned so that it fully presses into the trains when the projectile passes through the tube. It transmits the swirl to the floor via the rail guide of the trains and at the same time seals against the powder gases.
- the projectile 1 has a cavity 4 inside, in which, for. B. a brake parachute, not shown, can be accommodated.
- Fig. 2, 2 again designates the projectile shell on which the guide band 3 according to the invention is arranged.
- the grooves denoted by 31 to 34 serve in a known manner to accommodate the guide band material which also shears off at the rear when the projectile body passes through the tube.
- the radial contact between the tube and the guide band 3 exists only at the guide band rings 36 to 41.
- the dashed curve 300 shows the guide band pressure distribution for a guide band without grooves according to the storey structure with cavity 4 shown in FIG. 1. It can clearly be seen that a maximum guide band pressure occurs approximately in the middle of the guide band.
- the width B should be between 6 and 20 mm, depending on the type of the projectile. However, it should be taken into account that the total width of the guide band rings in such projectiles should be approximately 20 mm (typically, guide bands have a width of 38-40 mm).
- the step curve 301 in FIG. 3 gives approximately the pressure distribution of the guide belt 3 according to FIG. Fig. 2 again. Due to the relief groove 35, the guide band pressure drops significantly in this area.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
- Portable Nailing Machines And Staplers (AREA)
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Es wird ein Geschoßkörper (1) mit auf der Geschoßhülle (2) angeordnetem Führungsband (3) beschrieben, welches zur Aufnahme des beim Durchgang des Geschoßkörpers (1) durch das Waffenrohr nach hinten abscherenden Führungsbandmaterials Nuten (31, 32, 33, 34) aufweist. Um bei Verwendung sehr dünnwandiger Hüllen eine Absenkung des mittleren Führungsbanddruckes sowie eine bessere Abdichtung gegen den Gasdruck zu erreichen, wird mindestens an den Stellen im Bereich des Führungsbandes (3), an denen eine maximale Beanspruchung der Geschoßhülle (2) in radialer Richtung auftritt, mindestens eine Nut als Druckentlastungsnut (35) verwendet. Vorzugsweise hat die Druckentlastungsnut (35) eine Breite > 4 mm.A projectile body (1) with a guide band (3) arranged on the projectile casing (2) is described, which has grooves (31, 32, 33, 34) for receiving the guide band material sheared backwards when the projectile body (1) passes through the weapon barrel . In order to achieve a reduction in the mean guide band pressure and a better seal against the gas pressure when using very thin-walled casings, at least at the points in the region of the guide band (3) where the bullet casing (2) is subjected to maximum stress in the radial direction, at least a groove is used as a pressure relief groove (35). The pressure relief groove (35) preferably has a width> 4 mm.
Description
Die Erfindung betrifft einen Geschoßkörper, wie er im Oberbegriff des Patentanspruchs näher definiert ist.The invention relates to a projectile body as defined in the preamble of the claim.
Bei drallstabilisierten Geschossen erhalten die Geschosse zur Übertragung des Dralls ein oder - aus Beanspruchungs- und Verformungsgründen - teilweise auch mehrere hintereinander angeordnete Führungsbänder. Die Führungsbänder sind im Durchmesser so dimensioniert, daß sie sich beim Durchgang des Geschosses durch das Rohr in die Züge eindrücken.In the case of swirl-stabilized projectiles, the projectiles are provided with one or - for reasons of stress and deformation - also several guide bands arranged one behind the other to transmit the swirl. The diameter of the guide bands is such that they press into the trains as the bullet passes through the tube.
Es ist an sich bekannt, im Führungsband umlaufende Nuten einzubringen, die zur Aufnahme des nach hinten abscherenden Führungsbandmaterials dienen (vgl. z. B. die US-PS 3,910,194). Üblicherweise ist die Breite derartiger Nuten nicht größer als 4 mm. Die Führungsbänder können z. B. aus Kupfer, Weicheisen oder Kunststoff bestehen.It is known per se to introduce circumferential grooves in the guide band which serve to receive the guide band material which shears off to the rear (cf., for example, US Pat. No. 3,910,194). The width of such grooves is usually not greater than 4 mm. The guide tapes can e.g. B. made of copper, soft iron or plastic.
Bei diesen bekannten Führungsbändern erfolgt der radiale Kontakt zwischen Rohr und Führungsband lediglich über die ringförmigen Stege zwischen den Nuten. Dieser Kontakt bewirkt eine radialen Druck auf die Geschoßhülle 1 (Führungsbanddruck).In these known guide bands, the radial contact between the tube and the guide band takes place only via the annular webs between the grooves. This contact causes a radial pressure on the projectile casing 1 (guide band pressure).
Besonders bei der Verwendung dünner Geschoßhüllen, bei denen üblicherweise das Verhältnis zwischen Wandstärke der Geschoßhülle zum Rohrkaliber ≦ 0,05 ist, reagiert das Geschoß besonders empfindlich auf radialen Druck, da es an von der Geschoßgeometrie abhängigen Stellen zu großer Materialbeanspruchung kommen kann. Dadurch kann die Geschoßhülle u. a. nach innen gedrückt werden und die durch das Führungsband üblicherweise gewährleistete Abdichtung gegen die Treibgase ist nicht mehr gewährleistet.Especially when using thin projectile casings, in which the ratio between the wall thickness of the projectile casing and the tube caliber is ≦ 0.05, the projectile is particularly sensitive to radial pressure, since large stresses on the material can occur at points dependent on the projectile geometry. As a result, the shell can u. a. are pressed inwards and the seal against the propellant gases usually guaranteed by the guide band is no longer guaranteed.
Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, einen Geschoßkörper der eingangs erwähnten Art anzugeben, bei dem vor allem bei Verwendung sehr dünnwandiger Hüllen eine Absenkung des mittleren Führungsbanddruckes sowie eine bessere Abdichtung gegen den Gasdruck erfolgt.The present invention is therefore based on the object of specifying a projectile body of the type mentioned at the outset, in which, especially when using very thin-walled casings, there is a reduction in the mean guide band pressure and a better seal against the gas pressure.
Diese Aufgabe wird erfindungsgemäß durch die Merkmale des kennzeichnenden Teils des Patentanspruchs gelöst.This object is achieved by the features of the characterizing part of the patent claim.
Der Erfindung liegt also der Gedanke zugrunde, an den Stellen im Bereich des Führungsbandes, an denen eine hohe Beanspruchung der Geschoßhülle in radialer Richtung auftritt, eine Entlastungsnut vorzusehen. In der axialen Erhebung dieser Nut, - bzw. Nuten, wenn es mehrere sind - wird kein kontaktbedingter radialer Druck auf die Geschoßhülle ausgeübt.The invention is therefore based on the idea of providing a relief groove at those points in the region of the guide band where the bullet casing is subjected to high stresses in the radial direction. In the axial elevation of this groove, or grooves if there are several, no contact-related radial pressure is exerted on the projectile casing.
Die axiale Erstreckung der Entlastungsnuten hängt von der Steifigkeit der Geschoßhülle ab und soll bei Artilleriegeschossen mit Metall-Führungsbändern > 4 mm sein.The axial extent of the relief grooves depends on the rigidity of the shell and should be> 4 mm for artillery shells with metal guide bands.
Im folgenden wird anhand eines Ausführungsbeispieles und mit Hilfe von Figuren die Erfindung näher beschrieben.The invention is described in more detail below with the aid of an exemplary embodiment and with the aid of figures.
Es zeigen:
- Fig. 1 ein an sich bekanntes Geschoß mit erfindungsgemäßem Führungsband;
- Fig. 2 eine Detailansicht eines erfindungsgemäßen Führungsbandes, das auf der Geschoßhülle angeordnet ist; und
- Fig. 3 die Druckverteilung längs des Führungsbandes gemäß Fig. 2.
- Figure 1 is a known projectile with a guide band according to the invention.
- Fig. 2 is a detailed view of a guide tape according to the invention, which is arranged on the projectile casing; and
- 3 shows the pressure distribution along the guide belt according to FIG. 2.
In Fig. 1 ist mit 1 ein Geschoßkörper, mit 2 die Geschoßhülle und mit 3 das Führungsband bezeichnet. Das Führungsband 3 ist im Durchmesser so dimensioniert, daß es sich beim Durchgang des Geschosses durch das Rohr voll in die Züge eindrückt. Es überträgt über die Leistenführung der Züge den Drall auf das Geschoß und dichtet gleichzeitig gegen die Pulvergase ab. Im Bereich des Führungsbandes 3 weist das Geschoß 1 im Inneren einen Hohlraum 4 auf, in dem z. B. ein nicht dargestellter Bremsfallschirm untergebracht sein kann.In Fig. 1, 1 denotes a projectile body, 2 the projectile casing and 3 the guide band. The
In Fig. 2 ist mit 2 wiederum die Geschoßhülle bezeichnet, auf der das erfindungsgemäße Führungsband 3 angeordnet ist. Die mit 31 bis 34 bezeichneten Nuten dienen in bekannter Weise zur Aufnahme des beim Durchgang des Geschoßkörpers durch das Rohr auch hinten abscherenden Führungsbandmaterials.In Fig. 2, 2 again designates the projectile shell on which the
Der radiale Kontakt zwischen Rohr und Führungsband 3 besteht lediglich an den Führungsbandringen 36 bis 41.The radial contact between the tube and the
In Fig. 3 ist das Beispiel einer Druckverteilung längs des Führungsbandes dargestellt. Auf der Abzisse ist der Abstand a in mm von der Führungsbandvorderkante und auf der Ordinate der Führungsbanddruck P in Bar aufgetragen. Die strichlierte Kurve 300 zeigt die Führungsbanddruckverteilung für ein Führungsband ohne Nuten gemäß des in Fig. 1 dargestellten Geschoßaufbaues mit Hohlraum 4. Deutlich ist zu erkennen, daß etwa in der Mitte des Führungsbandes ein maximaler Führungsbanddruck auftritt.3 shows the example of a pressure distribution along the guide belt. The distance a in mm from the leading edge of the guide belt is plotted on the abscissa and the guide band pressure P in bar is plotted on the ordinate. The
Demzufolge muß in diesem Bereich eine Entlastungsnut vorgesehen werden. Diese Nut wurde in Fig.2 mit 35 bezeichnet. Ihre Breite B sollte breiter als 4 mm sein.Accordingly, a relief groove must be provided in this area. This groove was designated 35 in FIG. Their width B should be wider than 4 mm.
Bei Artilleriegeschossen soll die Breite B je nach Typ des Geschosses etwa zwischen 6 und 20 mm betragen. Allerdings ist zu berücksichtigen, daß die gesamte Breite der Führungsbandringe bei derartigen Geschossen etwa 20 mm betragen soll (typischerweise besitzen Führungsbänder eine Breite von 38 - 40 mm).For artillery shells, the width B should be between 6 and 20 mm, depending on the type of the projectile. However, it should be taken into account that the total width of the guide band rings in such projectiles should be approximately 20 mm (typically, guide bands have a width of 38-40 mm).
Die Stufenkurve 301 in Fig. 3 gibt in etwa die Druckverteilung des Führungsbandes 3 gem. Fig. 2 wieder. Durch die Entlastungsnut 35 sinkt der Führungsbanddruck in diesem Bereich deutlich ab.The
Selbstverständlich können - je nach ermittelter Führungsbanddruckverteilung - auch mehrere Entlastungsnuten vorgesehen werden.Of course, depending on the determined guide band pressure distribution, several relief grooves can also be provided.
Claims (2)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3630000 | 1986-09-03 | ||
| DE19863630000 DE3630000A1 (en) | 1986-09-03 | 1986-09-03 | BULLET BODY WITH GUIDE TAPE ON THE FLOOR SLEEVE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0258531A1 true EP0258531A1 (en) | 1988-03-09 |
| EP0258531B1 EP0258531B1 (en) | 1990-06-27 |
Family
ID=6308839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP87106389A Expired - Lifetime EP0258531B1 (en) | 1986-09-03 | 1987-05-02 | Projectile body provided with a rotating strap arranged on it |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US4803929A (en) |
| EP (1) | EP0258531B1 (en) |
| CA (1) | CA1286147C (en) |
| DE (2) | DE3630000A1 (en) |
| DK (1) | DK336787A (en) |
| GR (1) | GR3000592T3 (en) |
| NO (1) | NO162932C (en) |
| PT (1) | PT84994A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2656920A1 (en) * | 1990-01-05 | 1991-07-12 | Rheinmetall Gmbh | TORSIONALLY STABILIZED VECTOR PROJECTILE COMPRISING A METAL GUIDE STRIP. |
| DE10034345B4 (en) * | 2000-07-14 | 2005-02-17 | Rheinmetall W & M Gmbh | Can be fired from a gun full caliber bullet |
| DE10066232B4 (en) * | 2000-07-14 | 2006-03-16 | Rheinmetall Waffe Munition Gmbh | Projectile for tube weapon comprises body, rear section, detonator area and guide bands |
| RU206809U1 (en) * | 2021-03-15 | 2021-09-28 | Федеральное Государственное Бюджетное Образовательное Учреждение Высшего Образования «Новосибирский Государственный Технический Университет» | ARTILLERY SHELL FOR RAPED WEAPON |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3734033A1 (en) * | 1987-10-08 | 1989-04-20 | Rheinmetall Gmbh | SPIRAL-STABILIZED SUPPORT FLOOR PROVIDED WITH A GUIDE TAPE |
| DE19855536A1 (en) * | 1998-12-02 | 2000-06-08 | Rheinmetall W & M Gmbh | Swirl-stabilized artillery shell |
| US20060027128A1 (en) * | 2004-02-10 | 2006-02-09 | Hober Holding Company | Firearms projectile having jacket runner |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB309863A (en) * | 1928-04-16 | 1930-05-08 | Vaclav Holek | Improvements in or relating to projectiles |
| DE709576C (en) * | 1936-11-26 | 1941-08-21 | Rheinmetall Borsig Akt Ges | Iron or steel infantry bullet |
| DE731064C (en) * | 1936-11-26 | 1943-02-01 | Rheinmetall Borsig Ag | Infantry bullet |
| US2759421A (en) * | 1953-07-20 | 1956-08-21 | William M Sublette | Projectile with gas seal therearound |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US293337A (en) * | 1884-02-12 | Projectile | ||
| US160569A (en) * | 1875-03-09 | Improvement in projectiles for ordnance | ||
| US2663068A (en) * | 1948-12-14 | 1953-12-22 | Harold G Towner | Method of cold extruding a projectile with a rotating band |
| US3910194A (en) * | 1971-02-01 | 1975-10-07 | Hercules Inc | Projectile rotating band |
-
1986
- 1986-09-03 DE DE19863630000 patent/DE3630000A1/en active Granted
-
1987
- 1987-05-02 DE DE8787106389T patent/DE3763456D1/en not_active Expired - Lifetime
- 1987-05-02 EP EP87106389A patent/EP0258531B1/en not_active Expired - Lifetime
- 1987-06-02 PT PT84994A patent/PT84994A/en not_active Application Discontinuation
- 1987-06-03 NO NO872320A patent/NO162932C/en unknown
- 1987-06-30 DK DK336787A patent/DK336787A/en not_active Application Discontinuation
- 1987-09-02 CA CA000545926A patent/CA1286147C/en not_active Expired - Lifetime
- 1987-09-03 US US07/092,688 patent/US4803929A/en not_active Expired - Fee Related
-
1990
- 1990-06-28 GR GR90400402T patent/GR3000592T3/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB309863A (en) * | 1928-04-16 | 1930-05-08 | Vaclav Holek | Improvements in or relating to projectiles |
| DE709576C (en) * | 1936-11-26 | 1941-08-21 | Rheinmetall Borsig Akt Ges | Iron or steel infantry bullet |
| DE731064C (en) * | 1936-11-26 | 1943-02-01 | Rheinmetall Borsig Ag | Infantry bullet |
| US2759421A (en) * | 1953-07-20 | 1956-08-21 | William M Sublette | Projectile with gas seal therearound |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2656920A1 (en) * | 1990-01-05 | 1991-07-12 | Rheinmetall Gmbh | TORSIONALLY STABILIZED VECTOR PROJECTILE COMPRISING A METAL GUIDE STRIP. |
| DE10034345B4 (en) * | 2000-07-14 | 2005-02-17 | Rheinmetall W & M Gmbh | Can be fired from a gun full caliber bullet |
| DE10066232B4 (en) * | 2000-07-14 | 2006-03-16 | Rheinmetall Waffe Munition Gmbh | Projectile for tube weapon comprises body, rear section, detonator area and guide bands |
| RU206809U1 (en) * | 2021-03-15 | 2021-09-28 | Федеральное Государственное Бюджетное Образовательное Учреждение Высшего Образования «Новосибирский Государственный Технический Университет» | ARTILLERY SHELL FOR RAPED WEAPON |
Also Published As
| Publication number | Publication date |
|---|---|
| DK336787A (en) | 1988-03-04 |
| NO872320D0 (en) | 1987-06-03 |
| EP0258531B1 (en) | 1990-06-27 |
| CA1286147C (en) | 1991-07-16 |
| NO162932C (en) | 1990-03-07 |
| DE3630000A1 (en) | 1988-03-17 |
| NO162932B (en) | 1989-11-27 |
| US4803929A (en) | 1989-02-14 |
| DK336787D0 (en) | 1987-06-30 |
| NO872320L (en) | 1988-03-04 |
| DE3763456D1 (en) | 1990-08-02 |
| DE3630000C2 (en) | 1988-08-11 |
| PT84994A (en) | 1988-10-14 |
| GR3000592T3 (en) | 1991-07-31 |
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