EP0154762A2 - Insertion de base à répartition irrégulière des masses pour obus d'artillerie - Google Patents
Insertion de base à répartition irrégulière des masses pour obus d'artillerie Download PDFInfo
- Publication number
- EP0154762A2 EP0154762A2 EP84830327A EP84830327A EP0154762A2 EP 0154762 A2 EP0154762 A2 EP 0154762A2 EP 84830327 A EP84830327 A EP 84830327A EP 84830327 A EP84830327 A EP 84830327A EP 0154762 A2 EP0154762 A2 EP 0154762A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- base plug
- respect
- projectile
- base
- plug
- 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.)
- Withdrawn
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B30/00—Projectiles or missiles, not otherwise provided for, characterised by the ammunition class or type, e.g. by the launching apparatus or weapon used
- F42B30/003—Closures or baseplates therefor
Definitions
- the present invention relates to base plugs for artillery projectiles intended to eject a useful load at a given point of their trajectory.
- the base plug once separated from the projectile, does not go to interfere with the trajectory of the useful load because in such a case the load could be damaged.
- arrangements have been devised to avoid that such a disadvantage may occur.
- base plugs of a composite structure comprising a separable centering element inserted in a cavity provided in the base plug itself.
- This element can be either slidable but not separable, or totally separable.
- This assembly has a symmetrical distribution of the masses and therefore does not cause any disturbance in the trajectory of the projectile.
- the components of the base plug are either thrown each in a different direction by the centrifugal force or, because of the eccentricity of the center of gravity due to their mutual movement, they are deviated, so that they go out from the trajectory of the useful load.
- a base plug with eccentric structure is also known, in which a portion of material is missing in a side zone (that is, the center of gravity of the base plug is not on the axis of the projectile) and therefore at the time of splitting up the base plug is moved away from the trajectory of the useful load by the centrifugal force.
- the base plugs with eccentric structure due to the .. fact that their center of gravity is on the axis of the projectile, may cause disturbances in the trajectory of the projectile, it being, however, possible to keep these disturbances within acceptable limits. Nevertheless, the forging process of the blank of base plugs having an eccentrical structure is rather complicated.
- the base plug according to the invention having its geometric center on the axis of the projectile, is characterized in that it has a center of gravity eccentric with respect to the axis of the projectile because of the pressure of masses incorporated in the base plug having a different density with respect to the remainder of the material of the base plug.
- the base plug 1 is provided with a blind hole 2 drilled in the side facing toward the inside of the projectile. This hole is filled with a threaded plug 3 having a different mass with respect to that of the base plug 1. It is apparent that the connection between plug 3 and plug 1 may be provided, besides by screwing, by other well known means, each as by welding, glueing and the like.
- blind hole 2 may be drilled, instead of from the side of the base plug facing the inside of the projectile, also from the side facing outwardly.
- Figures 3 and 4 show a second embodiment of the base plug according to the invention, in which the base plug 1' has been provided with a blind hole 2' drilled from the side of the base plug 1' facing the inside of the projectile. This hole 2' has thereafter been fitted by pouring into it a suitable material 3' of a density different from that of the base plug 1, for example a resin.
- blind hole 2' might be provided in the portion of the base plug l' facing the outside of the projectile.
- FIG. 5 A third embodiment of the invention is shown in Figures 5 and 6. This embodiment is similar to that shown in Figures 3 and 4, except that two blind holes are provided, symmetrically disposed with respect to an X-X centerline.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Rigid Or Semi-Rigid Containers (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
- Closures For Containers (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT19251/84A IT1173088B (it) | 1984-01-20 | 1984-01-20 | Tappo fondello a masse differenziate per proiettili d'artiglieria |
IT1925184 | 1984-01-20 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0154762A2 true EP0154762A2 (fr) | 1985-09-18 |
EP0154762A3 EP0154762A3 (fr) | 1988-05-25 |
Family
ID=11156129
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP84830327A Withdrawn EP0154762A3 (fr) | 1984-01-20 | 1984-12-04 | Insertion de base à répartition irrégulière des masses pour obus d'artillerie |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0154762A3 (fr) |
ES (1) | ES292712Y (fr) |
IT (1) | IT1173088B (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0246205A1 (fr) * | 1986-01-29 | 1987-11-19 | Aktiebolaget Bofors | Construction de projectile pour réduire la dispersion à l'impact |
EP0253021A1 (fr) * | 1986-04-24 | 1988-01-20 | Rheinmetall GmbH | Projectile sous-calibré à portée limitée du type flèche pour arme à canon |
FR2650066A1 (fr) * | 1989-07-24 | 1991-01-25 | Rheinmetall Gmbh | Projectile porteur |
WO2004099699A2 (fr) * | 2003-05-06 | 2004-11-18 | Richard Sexton | Procede de tir d'une arme a feu dans le but de disperser des projectiles |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2316575A1 (fr) * | 1975-07-04 | 1977-01-28 | Bofors Ab | Dispositif pour le culot d'un projectile mis a feu par une charge propulsive |
DE2738031A1 (de) * | 1976-08-23 | 1978-03-02 | Foerenade Fabriksverken | Vorrichtung zum ausstoss und zum trennen von koerpern aus bzw. von einem geschoss |
-
1984
- 1984-01-20 IT IT19251/84A patent/IT1173088B/it active
- 1984-12-04 EP EP84830327A patent/EP0154762A3/fr not_active Withdrawn
- 1984-12-27 ES ES1984292712U patent/ES292712Y/es not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2316575A1 (fr) * | 1975-07-04 | 1977-01-28 | Bofors Ab | Dispositif pour le culot d'un projectile mis a feu par une charge propulsive |
DE2738031A1 (de) * | 1976-08-23 | 1978-03-02 | Foerenade Fabriksverken | Vorrichtung zum ausstoss und zum trennen von koerpern aus bzw. von einem geschoss |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0246205A1 (fr) * | 1986-01-29 | 1987-11-19 | Aktiebolaget Bofors | Construction de projectile pour réduire la dispersion à l'impact |
EP0253021A1 (fr) * | 1986-04-24 | 1988-01-20 | Rheinmetall GmbH | Projectile sous-calibré à portée limitée du type flèche pour arme à canon |
US4765248A (en) * | 1986-04-24 | 1988-08-23 | Rheinmetall Gmbh | Limited range, arrow stabilized subcaliber projectile for a tubular weapon |
FR2650066A1 (fr) * | 1989-07-24 | 1991-01-25 | Rheinmetall Gmbh | Projectile porteur |
DE3924397A1 (de) * | 1989-07-24 | 1991-02-07 | Rheinmetall Gmbh | Traegergeschoss |
US5042389A (en) * | 1989-07-24 | 1991-08-27 | Rheinmetall Gmbh | Carrier projectile |
WO2004099699A2 (fr) * | 2003-05-06 | 2004-11-18 | Richard Sexton | Procede de tir d'une arme a feu dans le but de disperser des projectiles |
WO2004099699A3 (fr) * | 2003-05-06 | 2005-02-10 | Richard Sexton | Procede de tir d'une arme a feu dans le but de disperser des projectiles |
US7017495B2 (en) * | 2003-05-06 | 2006-03-28 | Richard Sexton | Gun firing method for dispersion of projectiles in a pattern |
Also Published As
Publication number | Publication date |
---|---|
IT1173088B (it) | 1987-06-18 |
ES292712U (es) | 1986-06-16 |
IT8419251A0 (it) | 1984-01-20 |
ES292712Y (es) | 1987-03-01 |
EP0154762A3 (fr) | 1988-05-25 |
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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 |
Designated state(s): AT BE CH DE FR GB LI LU NL SE |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE CH DE FR GB LI LU NL SE |
|
17P | Request for examination filed |
Effective date: 19880625 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SIMMEL DIFESA S.P.A. |
|
17Q | First examination report despatched |
Effective date: 19890217 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19890628 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: ANDREETTA, RODOLFO |